xserver xkeyboard-config libX11 mesa git update 15 April 2011

17 files changed, 6116 insertions, 5571 deletions

diff --git a/mesalib/configure.ac b/mesalib/configure.ac
index 5c6ac445c..ddd860813 100644
--- a/mesalib/configure.ac
+++ b/mesalib/configure.ac
@@ -1,1937 +1,1952 @@
-dnl Process this file with autoconf to create configure.

-

-AC_PREREQ([2.59])

-

-dnl Versioning - scrape the version from configs/default

-m4_define([mesa_version],

-    [m4_esyscmd([${MAKE-make} -s -f bin/version.mk version | tr -d '\n' | tr -d '\r'])])

-m4_ifval(mesa_version,,

-    [m4_fatal([Failed to get the Mesa version from `make -f bin/version.mk version`])])

-

-dnl Tell the user about autoconf.html in the --help output

-m4_divert_once([HELP_END], [

-See docs/autoconf.html for more details on the options for Mesa.])

-

-AC_INIT([Mesa],[mesa_version],

-    [https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa])

-AC_CONFIG_AUX_DIR([bin])

-AC_CANONICAL_HOST

-

-dnl Versions for external dependencies

-LIBDRM_REQUIRED=2.4.24

-LIBDRM_RADEON_REQUIRED=2.4.24

-LIBDRM_INTEL_REQUIRED=2.4.24

-DRI2PROTO_REQUIRED=2.1

-GLPROTO_REQUIRED=1.4.11

-LIBDRM_XORG_REQUIRED=2.4.24

-LIBKMS_XORG_REQUIRED=1.0.0

-

-dnl Check for progs

-AC_PROG_CPP

-AC_PROG_CC

-AC_PROG_CXX

-AC_CHECK_PROGS([MAKE], [gmake make])

-AC_CHECK_PROGS([PYTHON2], [python2 python])

-AC_PATH_PROG([MKDEP], [makedepend])

-AC_PATH_PROG([SED], [sed])

-

-if test "x$MKDEP" = "x"; then

-    AC_MSG_ERROR([makedepend is required to build Mesa])

-fi

-

-dnl Our fallback install-sh is a symlink to minstall. Use the existing

-dnl configuration in that case.

-AC_PROG_INSTALL

-test "x$INSTALL" = "x$ac_install_sh" && INSTALL='$(MINSTALL)'

-

-dnl We need a POSIX shell for parts of the build. Assume we have one

-dnl in most cases.

-case "$host_os" in

-solaris*)

-    # Solaris /bin/sh is too old/non-POSIX compliant

-    AC_PATH_PROGS(POSIX_SHELL, [ksh93 ksh sh])

-    SHELL="$POSIX_SHELL"

-    ;;

-esac

-

-dnl clang is mostly GCC-compatible, but its version is much lower,

-dnl so we have to check for it.

-AC_MSG_CHECKING([if compiling with clang])

-

-AC_COMPILE_IFELSE(

-[AC_LANG_PROGRAM([], [[

-#ifndef __clang__

-       not clang

-#endif

-]])],

-[CLANG=yes], [CLANG=no])

-

-AC_MSG_RESULT([$CLANG])

-

-dnl If we're using GCC, make sure that it is at least version 3.3.0.  Older

-dnl versions are explictly not supported.

-if test "x$GCC" = xyes -a "x$CLANG" = xno; then

-    AC_MSG_CHECKING([whether gcc version is sufficient])

-    major=0

-    minor=0

-

-    GCC_VERSION=`$CC -dumpversion`

-    if test $? -eq 0; then

-        major=`echo $GCC_VERSION | cut -d. -f1`

-        minor=`echo $GCC_VERSION | cut -d. -f1`

-    fi

-

-    if test $major -lt 3 -o $major -eq 3 -a $minor -lt 3 ; then

-        AC_MSG_RESULT([no])

-        AC_MSG_ERROR([If using GCC, version 3.3.0 or later is required.])

-    else

-        AC_MSG_RESULT([yes])

-    fi

-fi

-

-

-MKDEP_OPTIONS=-fdepend

-dnl Ask gcc where it's keeping its secret headers

-if test "x$GCC" = xyes; then

-    for dir in include include-fixed; do

-        GCC_INCLUDES=`$CC -print-file-name=$dir`

-        if test "x$GCC_INCLUDES" != x && \

-           test "$GCC_INCLUDES" != "$dir" && \

-           test -d "$GCC_INCLUDES"; then

-            MKDEP_OPTIONS="$MKDEP_OPTIONS -I$GCC_INCLUDES"

-        fi

-    done

-fi

-AC_SUBST([MKDEP_OPTIONS])

-

-dnl Make sure the pkg-config macros are defined

-m4_ifndef([PKG_PROG_PKG_CONFIG],

-    [m4_fatal([Could not locate the pkg-config autoconf macros.

-  These are usually located in /usr/share/aclocal/pkg.m4. If your macros

-  are in a different location, try setting the environment variable

-  ACLOCAL="aclocal -I/other/macro/dir" before running autoreconf.])])

-PKG_PROG_PKG_CONFIG()

-

-dnl LIB_DIR - library basename

-LIB_DIR=`echo $libdir | $SED 's%.*/%%'`

-AC_SUBST([LIB_DIR])

-

-dnl Cache LDFLAGS so we can add EXTRA_LIB_PATH and restore it later

-_SAVE_LDFLAGS="$LDFLAGS"

-AC_ARG_VAR([EXTRA_LIB_PATH],[Extra -L paths for the linker])

-AC_SUBST([EXTRA_LIB_PATH])

-

-dnl Cache CPPFLAGS so we can add *_INCLUDES and restore it later

-_SAVE_CPPFLAGS="$CPPFLAGS"

-AC_ARG_VAR([X11_INCLUDES],[Extra -I paths for X11 headers])

-AC_SUBST([X11_INCLUDES])

-

-dnl Compiler macros

-DEFINES=""

-AC_SUBST([DEFINES])

-case "$host_os" in

-linux*|*-gnu*|gnu*)

-    DEFINES="$DEFINES -D_GNU_SOURCE -DPTHREADS"

-    ;;

-solaris*)

-    DEFINES="$DEFINES -DPTHREADS -DSVR4"

-    ;;

-cygwin*)

-    DEFINES="$DEFINES -DPTHREADS"

-    ;;

-esac

-

-dnl Add flags for gcc and g++

-if test "x$GCC" = xyes; then

-    CFLAGS="$CFLAGS -Wall -Wmissing-prototypes -std=c99"

-    if test "x$CLANG" = "xno"; then

-       CFLAGS="$CFLAGS -ffast-math"

-    fi

-

-    # Enable -fvisibility=hidden if using a gcc that supports it

-    save_CFLAGS="$CFLAGS"

-    AC_MSG_CHECKING([whether $CC supports -fvisibility=hidden])

-    VISIBILITY_CFLAGS="-fvisibility=hidden"

-    CFLAGS="$CFLAGS $VISIBILITY_CFLAGS"

-    AC_LINK_IFELSE([AC_LANG_PROGRAM()], AC_MSG_RESULT([yes]),

-		   [VISIBILITY_CFLAGS=""; AC_MSG_RESULT([no])]);

-

-    # Restore CFLAGS; VISIBILITY_CFLAGS are added to it where needed.

-    CFLAGS=$save_CFLAGS

-

-    # Work around aliasing bugs - developers should comment this out

-    CFLAGS="$CFLAGS -fno-strict-aliasing"

-fi

-if test "x$GXX" = xyes; then

-    CXXFLAGS="$CXXFLAGS -Wall"

-

-    # Enable -fvisibility=hidden if using a gcc that supports it

-    save_CXXFLAGS="$CXXFLAGS"

-    AC_MSG_CHECKING([whether $CXX supports -fvisibility=hidden])

-    VISIBILITY_CXXFLAGS="-fvisibility=hidden"

-    CXXFLAGS="$CXXFLAGS $VISIBILITY_CXXFLAGS"

-    AC_LINK_IFELSE([AC_LANG_PROGRAM()], AC_MSG_RESULT([yes]),

-		   [VISIBILITY_CXXFLAGS="" ; AC_MSG_RESULT([no])]);

-

-    # Restore CXXFLAGS; VISIBILITY_CXXFLAGS are added to it where needed.

-    CXXFLAGS=$save_CXXFLAGS

-

-    # Work around aliasing bugs - developers should comment this out

-    CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"

-fi

-

-AC_SUBST([VISIBILITY_CFLAGS])

-AC_SUBST([VISIBILITY_CXXFLAGS])

-

-dnl These should be unnecessary, but let the user set them if they want

-AC_ARG_VAR([OPT_FLAGS], [Additional optimization flags for the compiler.

-    Default is to use CFLAGS.])

-AC_ARG_VAR([ARCH_FLAGS], [Additional architecture specific flags for the

-    compiler. Default is to use CFLAGS.])

-AC_SUBST([OPT_FLAGS])

-AC_SUBST([ARCH_FLAGS])

-

-dnl

-dnl Hacks to enable 32 or 64 bit build

-dnl

-AC_ARG_ENABLE([32-bit],

-    [AS_HELP_STRING([--enable-32-bit],

-        [build 32-bit libraries @<:@default=auto@:>@])],

-    [enable_32bit="$enableval"],

-    [enable_32bit=auto]

-)

-if test "x$enable_32bit" = xyes; then

-    if test "x$GCC" = xyes; then

-        CFLAGS="$CFLAGS -m32"

-        ARCH_FLAGS="$ARCH_FLAGS -m32"

-    fi

-    if test "x$GXX" = xyes; then

-        CXXFLAGS="$CXXFLAGS -m32"

-    fi

-fi

-AC_ARG_ENABLE([64-bit],

-    [AS_HELP_STRING([--enable-64-bit],

-        [build 64-bit libraries @<:@default=auto@:>@])],

-    [enable_64bit="$enableval"],

-    [enable_64bit=auto]

-)

-if test "x$enable_64bit" = xyes; then

-    if test "x$GCC" = xyes; then

-        CFLAGS="$CFLAGS -m64"

-    fi

-    if test "x$GXX" = xyes; then

-        CXXFLAGS="$CXXFLAGS -m64"

-    fi

-fi

-

-dnl

-dnl shared/static libraries, mimic libtool options

-dnl

-AC_ARG_ENABLE([static],

-    [AS_HELP_STRING([--enable-static],

-        [build static libraries @<:@default=disabled@:>@])],

-    [enable_static="$enableval"],

-    [enable_static=no]

-)

-case "x$enable_static" in

-xyes|xno ) ;;

-x ) enable_static=no ;;

-* )

-    AC_MSG_ERROR([Static library option '$enable_static' is not a valid])

-    ;;

-esac

-AC_ARG_ENABLE([shared],

-    [AS_HELP_STRING([--disable-shared],

-        [build shared libraries @<:@default=enabled@:>@])],

-    [enable_shared="$enableval"],

-    [enable_shared=yes]

-)

-case "x$enable_shared" in

-xyes|xno ) ;;

-x ) enable_shared=yes ;;

-* )

-    AC_MSG_ERROR([Shared library option '$enable_shared' is not a valid])

-    ;;

-esac

-

-dnl Can't have static and shared libraries, default to static if user

-dnl explicitly requested. If both disabled, set to static since shared

-dnl was explicitly requirested.

-case "x$enable_static$enable_shared" in

-xyesyes )

-    AC_MSG_WARN([Can't build static and shared libraries, disabling shared])

-    enable_shared=no

-    ;;

-xnono )

-    AC_MSG_WARN([Can't disable both static and shared libraries, enabling static])

-    enable_static=yes

-    ;;

-esac

-

-dnl

-dnl mklib options

-dnl

-AC_ARG_VAR([MKLIB_OPTIONS],[Options for the Mesa library script, mklib])

-if test "$enable_static" = yes; then

-    MKLIB_OPTIONS="$MKLIB_OPTIONS -static"

-fi

-AC_SUBST([MKLIB_OPTIONS])

-

-dnl

-dnl other compiler options

-dnl

-AC_ARG_ENABLE([debug],

-    [AS_HELP_STRING([--enable-debug],

-        [use debug compiler flags and macros @<:@default=disabled@:>@])],

-    [enable_debug="$enableval"],

-    [enable_debug=no]

-)

-if test "x$enable_debug" = xyes; then

-    DEFINES="$DEFINES -DDEBUG"

-    if test "x$GCC" = xyes; then

-        CFLAGS="$CFLAGS -g"

-    fi

-    if test "x$GXX" = xyes; then

-        CXXFLAGS="$CXXFLAGS -g"

-    fi

-fi

-

-dnl

-dnl library names

-dnl

-LIB_PREFIX_GLOB='lib'

-LIB_VERSION_SEPARATOR='.'

-if test "$enable_static" = yes; then

-    LIB_EXTENSION='a'

-else

-    case "$host_os" in

-    darwin* )

-        LIB_EXTENSION='dylib' ;;

-    cygwin* )

-        dnl prefix can be 'cyg' or 'lib'

-        LIB_PREFIX_GLOB='???'

-        LIB_VERSION_SEPARATOR='-'

-        LIB_EXTENSION='dll' ;;

-    aix* )

-        LIB_EXTENSION='a' ;;

-    * )

-        LIB_EXTENSION='so' ;;

-    esac

-fi

-

-GL_LIB_NAME='lib$(GL_LIB).'${LIB_EXTENSION}

-GLU_LIB_NAME='lib$(GLU_LIB).'${LIB_EXTENSION}

-GLUT_LIB_NAME='lib$(GLUT_LIB).'${LIB_EXTENSION}

-GLW_LIB_NAME='lib$(GLW_LIB).'${LIB_EXTENSION}

-OSMESA_LIB_NAME='lib$(OSMESA_LIB).'${LIB_EXTENSION}

-EGL_LIB_NAME='lib$(EGL_LIB).'${LIB_EXTENSION}

-GLESv1_CM_LIB_NAME='lib$(GLESv1_CM_LIB).'${LIB_EXTENSION}

-GLESv2_LIB_NAME='lib$(GLESv2_LIB).'${LIB_EXTENSION}

-VG_LIB_NAME='lib$(VG_LIB).'${LIB_EXTENSION}

-GLAPI_LIB_NAME='lib$(GLAPI_LIB).'${LIB_EXTENSION}

-WAYLAND_EGL_LIB_NAME='lib$(WAYLAND_EGL_LIB).'${LIB_EXTENSION}

-

-GL_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GL_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

-GLU_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLU_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

-GLUT_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLUT_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

-GLW_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLW_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

-OSMESA_LIB_GLOB=${LIB_PREFIX_GLOB}'$(OSMESA_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

-EGL_LIB_GLOB=${LIB_PREFIX_GLOB}'$(EGL_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

-EGL_LIB_GLOB=${LIB_PREFIX_GLOB}'$(EGL_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

-GLESv1_CM_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLESv1_CM_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

-GLESv2_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLESv2_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

-VG_LIB_GLOB=${LIB_PREFIX_GLOB}'$(VG_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

-GLAPI_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLAPI_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

-WAYLAND_EGL_LIB_GLOB=${LIB_PREFIX_GLOB}'$(WAYLAND_EGL_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'

-

-AC_SUBST([GL_LIB_NAME])

-AC_SUBST([GLU_LIB_NAME])

-AC_SUBST([GLUT_LIB_NAME])

-AC_SUBST([GLW_LIB_NAME])

-AC_SUBST([OSMESA_LIB_NAME])

-AC_SUBST([EGL_LIB_NAME])

-AC_SUBST([GLESv1_CM_LIB_NAME])

-AC_SUBST([GLESv2_LIB_NAME])

-AC_SUBST([VG_LIB_NAME])

-AC_SUBST([GLAPI_LIB_NAME])

-AC_SUBST([WAYLAND_EGL_LIB_NAME])

-

-AC_SUBST([GL_LIB_GLOB])

-AC_SUBST([GLU_LIB_GLOB])

-AC_SUBST([GLUT_LIB_GLOB])

-AC_SUBST([GLW_LIB_GLOB])

-AC_SUBST([OSMESA_LIB_GLOB])

-AC_SUBST([EGL_LIB_GLOB])

-AC_SUBST([GLESv1_CM_LIB_GLOB])

-AC_SUBST([GLESv2_LIB_GLOB])

-AC_SUBST([VG_LIB_GLOB])

-AC_SUBST([GLAPI_LIB_GLOB])

-AC_SUBST([WAYLAND_EGL_LIB_GLOB])

-

-dnl

-dnl Arch/platform-specific settings

-dnl

-AC_ARG_ENABLE([asm],

-    [AS_HELP_STRING([--disable-asm],

-        [disable assembly usage @<:@default=enabled on supported plaforms@:>@])],

-    [enable_asm="$enableval"],

-    [enable_asm=yes]

-)

-asm_arch=""

-ASM_FLAGS=""

-MESA_ASM_SOURCES=""

-GLAPI_ASM_SOURCES=""

-AC_MSG_CHECKING([whether to enable assembly])

-test "x$enable_asm" = xno && AC_MSG_RESULT([no])

-# disable if cross compiling on x86/x86_64 since we must run gen_matypes

-if test "x$enable_asm" = xyes && test "x$cross_compiling" = xyes; then

-    case "$host_cpu" in

-    i?86 | x86_64)

-        enable_asm=no

-        AC_MSG_RESULT([no, cross compiling])

-        ;;

-    esac

-fi

-# check for supported arches

-if test "x$enable_asm" = xyes; then

-    case "$host_cpu" in

-    i?86)

-        case "$host_os" in

-        linux* | *freebsd* | dragonfly* | *netbsd*)

-            test "x$enable_64bit" = xyes && asm_arch=x86_64 || asm_arch=x86

-            ;;

-        esac

-        ;;

-    x86_64)

-        case "$host_os" in

-        linux* | *freebsd* | dragonfly* | *netbsd*)

-            test "x$enable_32bit" = xyes && asm_arch=x86 || asm_arch=x86_64

-            ;;

-        esac

-        ;;

-    powerpc)

-        case "$host_os" in

-        linux*)

-            asm_arch=ppc

-            ;;

-        esac

-        ;;

-    sparc*)

-        case "$host_os" in

-        linux*)

-            asm_arch=sparc

-            ;;

-        esac

-        ;;

-    esac

-

-    case "$asm_arch" in

-    x86)

-        ASM_FLAGS="-DUSE_X86_ASM -DUSE_MMX_ASM -DUSE_3DNOW_ASM -DUSE_SSE_ASM"

-        MESA_ASM_SOURCES='$(X86_SOURCES)'

-        GLAPI_ASM_SOURCES='$(X86_API)'

-        AC_MSG_RESULT([yes, x86])

-        ;;

-    x86_64)

-        ASM_FLAGS="-DUSE_X86_64_ASM"

-        MESA_ASM_SOURCES='$(X86-64_SOURCES)'

-        GLAPI_ASM_SOURCES='$(X86-64_API)'

-        AC_MSG_RESULT([yes, x86_64])

-        ;;

-    ppc)

-        ASM_FLAGS="-DUSE_PPC_ASM -DUSE_VMX_ASM"

-        MESA_ASM_SOURCES='$(PPC_SOURCES)'

-        AC_MSG_RESULT([yes, ppc])

-        ;;

-    sparc)

-        ASM_FLAGS="-DUSE_SPARC_ASM"

-        MESA_ASM_SOURCES='$(SPARC_SOURCES)'

-        GLAPI_ASM_SOURCES='$(SPARC_API)'

-        AC_MSG_RESULT([yes, sparc])

-        ;;

-    *)

-        AC_MSG_RESULT([no, platform not supported])

-        ;;

-    esac

-fi

-AC_SUBST([ASM_FLAGS])

-AC_SUBST([MESA_ASM_SOURCES])

-AC_SUBST([GLAPI_ASM_SOURCES])

-

-dnl PIC code macro

-MESA_PIC_FLAGS

-

-dnl Check to see if dlopen is in default libraries (like Solaris, which

-dnl has it in libc), or if libdl is needed to get it.

-AC_CHECK_FUNC([dlopen], [],

-    [AC_CHECK_LIB([dl], [dlopen], [DLOPEN_LIBS="-ldl"])])

-AC_SUBST([DLOPEN_LIBS])

-

-dnl See if posix_memalign is available

-AC_CHECK_FUNC([posix_memalign], [DEFINES="$DEFINES -DHAVE_POSIX_MEMALIGN"])

-

-dnl SELinux awareness.

-AC_ARG_ENABLE([selinux],

-    [AS_HELP_STRING([--enable-selinux],

-        [Build SELinux-aware Mesa @<:@default=disabled@:>@])],

-    [MESA_SELINUX="$enableval"],

-    [MESA_SELINUX=no])

-if test "x$enable_selinux" = "xyes"; then

-    AC_CHECK_HEADER([selinux/selinux.h],[],

-                    [AC_MSG_ERROR([SELinux headers not found])])

-    AC_CHECK_LIB([selinux],[is_selinux_enabled],[],

-                 [AC_MSG_ERROR([SELinux library not found])])

-    SELINUX_LIBS="-lselinux"

-    DEFINES="$DEFINES -DMESA_SELINUX"

-fi

-

-dnl Determine which APIs to support

-AC_ARG_ENABLE([opengl],

-    [AS_HELP_STRING([--disable-opengl],

-        [disable support for standard OpenGL API @<:@default=no@:>@])],

-    [enable_opengl="$enableval"],

-    [enable_opengl=yes])

-AC_ARG_ENABLE([gles1],

-    [AS_HELP_STRING([--enable-gles1],

-        [enable support for OpenGL ES 1.x API @<:@default=no@:>@])],

-    [enable_gles1="$enableval"],

-    [enable_gles1=no])

-AC_ARG_ENABLE([gles2],

-    [AS_HELP_STRING([--enable-gles2],

-        [enable support for OpenGL ES 2.x API @<:@default=no@:>@])],

-    [enable_gles2="$enableval"],

-    [enable_gles2=no])

-AC_ARG_ENABLE([gles-overlay],

-    [AS_HELP_STRING([--enable-gles-overlay],

-        [DEPRECATED.  Same as --enable-gles1 and --enable-gles2])],

-    [enable_gles1="$enableval"; enable_gles2="$enableval"],

-    [])

-

-AC_ARG_ENABLE([openvg],

-    [AS_HELP_STRING([--enable-openvg],

-        [enable support for OpenVG API @<:@default=no@:>@])],

-    [enable_openvg="$enableval"],

-    [enable_openvg=no])

-

-dnl smooth the transition; should be removed eventually

-if test "x$enable_openvg" = xno; then

-    case "x$with_state_trackers" in

-    x*vega*)

-        AC_MSG_WARN([vega state tracker is enabled without --enable-openvg])

-        enable_openvg=yes

-        ;;

-    esac

-fi

-

-if test "x$enable_opengl" = xno -a \

-        "x$enable_gles1" = xno -a \

-        "x$enable_gles2" = xno -a \

-        "x$enable_openvg" = xno; then

-    AC_MSG_ERROR([at least one API should be enabled])

-fi

-

-API_DEFINES=""

-if test "x$enable_opengl" = xno; then

-    API_DEFINES="$API_DEFINES -DFEATURE_GL=0"

-else

-    API_DEFINES="$API_DEFINES -DFEATURE_GL=1"

-fi

-if test "x$enable_gles1" = xyes; then

-    API_DEFINES="$API_DEFINES -DFEATURE_ES1=1"

-fi

-if test "x$enable_gles2" = xyes; then

-    API_DEFINES="$API_DEFINES -DFEATURE_ES2=1"

-fi

-AC_SUBST([API_DEFINES])

-

-AC_ARG_ENABLE([shared-glapi],

-    [AS_HELP_STRING([--enable-shared-glapi],

-        [EXPERIMENTAL.  Enable shared glapi for OpenGL @<:@default=no@:>@])],

-    [enable_shared_glapi="$enableval"],

-    [enable_shared_glapi=no])

-

-SHARED_GLAPI="0"

-if test "x$enable_shared_glapi" = xyes; then

-    SHARED_GLAPI="1"

-fi

-AC_SUBST([SHARED_GLAPI])

-

-dnl

-dnl Driver configuration. Options are xlib, dri and osmesa right now.

-dnl More later: fbdev, ...

-dnl

-default_driver="xlib"

-

-case "$host_os" in

-linux*)

-    case "$host_cpu" in

-    i*86|x86_64|powerpc*|sparc*) default_driver="dri";;

-    esac

-    ;;

-*freebsd* | dragonfly* | *netbsd*)

-    case "$host_cpu" in

-    i*86|x86_64|powerpc*|sparc*) default_driver="dri";;

-    esac

-    ;;

-esac

-

-if test "x$enable_opengl" = xno; then

-    default_driver="no"

-fi

-

-AC_ARG_WITH([driver],

-    [AS_HELP_STRING([--with-driver=DRIVER],

-        [driver for Mesa: xlib,dri,osmesa @<:@default=dri when available, or xlib@:>@])],

-    [mesa_driver="$withval"],

-    [mesa_driver="$default_driver"])

-dnl Check for valid option

-case "x$mesa_driver" in

-xxlib|xdri|xosmesa)

-    if test "x$enable_opengl" = xno; then

-        AC_MSG_ERROR([Driver '$mesa_driver' requires OpenGL enabled])

-    fi

-    ;;

-xno)

-    ;;

-*)

-    AC_MSG_ERROR([Driver '$mesa_driver' is not a valid option])

-    ;;

-esac

-

-dnl

-dnl Driver specific build directories

-dnl

-

-dnl this variable will be prepended to SRC_DIRS and is not exported

-CORE_DIRS=""

-

-SRC_DIRS=""

-GLU_DIRS="sgi"

-GALLIUM_DIRS="auxiliary drivers state_trackers"

-GALLIUM_TARGET_DIRS=""

-GALLIUM_WINSYS_DIRS="sw"

-GALLIUM_DRIVERS_DIRS="softpipe failover galahad trace rbug noop identity"

-GALLIUM_STATE_TRACKERS_DIRS=""

-

-# build shared-glapi if enabled for OpenGL or if OpenGL ES is enabled

-case "x$enable_shared_glapi$enable_gles1$enable_gles2" in

-x*yes*)

-    CORE_DIRS="$CORE_DIRS mapi/shared-glapi"

-    ;;

-esac

-

-# build glapi if OpenGL is enabled

-if test "x$enable_opengl" = xyes; then

-    CORE_DIRS="$CORE_DIRS mapi/glapi"

-fi

-

-# build es1api if OpenGL ES 1.x is enabled

-if test "x$enable_gles1" = xyes; then

-    CORE_DIRS="$CORE_DIRS mapi/es1api"

-fi

-

-# build es2api if OpenGL ES 2.x is enabled

-if test "x$enable_gles2" = xyes; then

-    CORE_DIRS="$CORE_DIRS mapi/es2api"

-fi

-

-# build vgapi if OpenVG is enabled

-if test "x$enable_openvg" = xyes; then

-    CORE_DIRS="$CORE_DIRS mapi/vgapi"

-fi

-

-# build glsl and mesa if OpenGL or OpenGL ES is enabled

-case "x$enable_opengl$enable_gles1$enable_gles2" in

-x*yes*)

-    CORE_DIRS="$CORE_DIRS glsl mesa"

-    ;;

-esac

-

-case "$mesa_driver" in

-xlib)

-    DRIVER_DIRS="x11"

-    GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/xlib"

-    GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS libgl-xlib"

-    ;;

-dri)

-    SRC_DIRS="$SRC_DIRS glx"

-    DRIVER_DIRS="dri"

-    GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/xlib sw/dri"

-    ;;

-osmesa)

-    DRIVER_DIRS="osmesa"

-    ;;

-no)

-    DRIVER_DRIS=""

-    ;;

-esac

-AC_SUBST([SRC_DIRS])

-AC_SUBST([GLU_DIRS])

-AC_SUBST([DRIVER_DIRS])

-AC_SUBST([GALLIUM_DIRS])

-AC_SUBST([GALLIUM_TARGET_DIRS])

-AC_SUBST([GALLIUM_WINSYS_DIRS])

-AC_SUBST([GALLIUM_DRIVERS_DIRS])

-AC_SUBST([GALLIUM_STATE_TRACKERS_DIRS])

-AC_SUBST([MESA_LLVM])

-

-dnl

-dnl Find out if X is available. The variable have_x is set if libX11 is

-dnl found to mimic AC_PATH_XTRA.

-dnl

-if test -n "$PKG_CONFIG"; then

-    AC_MSG_CHECKING([pkg-config files for X11 are available])

-    PKG_CHECK_EXISTS([x11],[

-        x11_pkgconfig=yes

-        have_x=yes

-        ],[

-        x11_pkgconfig=no

-    ])

-    AC_MSG_RESULT([$x11_pkgconfig])

-else

-    x11_pkgconfig=no

-fi

-dnl Use the autoconf macro if no pkg-config files

-if test "$x11_pkgconfig" = yes; then

-    PKG_CHECK_MODULES([X11], [x11])

-else

-    AC_PATH_XTRA

-    test -z "$X11_CFLAGS" && X11_CFLAGS="$X_CFLAGS"

-    test -z "$X11_LIBS" && X11_LIBS="$X_LIBS -lX11"

-    AC_SUBST([X11_CFLAGS])

-    AC_SUBST([X11_LIBS])

-fi

-

-dnl Try to tell the user that the --x-* options are only used when

-dnl pkg-config is not available. This must be right after AC_PATH_XTRA.

-m4_divert_once([HELP_BEGIN],

-[These options are only used when the X libraries cannot be found by the

-pkg-config utility.])

-

-dnl We need X for xlib and dri, so bomb now if it's not found

-case "$mesa_driver" in

-xlib|dri)

-    if test "$no_x" = yes; then

-        AC_MSG_ERROR([X11 development libraries needed for $mesa_driver driver])

-    fi

-    ;;

-esac

-

-dnl XCB - this is only used for GLX right now

-AC_ARG_ENABLE([xcb],

-    [AS_HELP_STRING([--enable-xcb],

-        [use XCB for GLX @<:@default=disabled@:>@])],

-    [enable_xcb="$enableval"],

-    [enable_xcb=no])

-if test "x$enable_xcb" = xyes; then

-    DEFINES="$DEFINES -DUSE_XCB"

-else

-    enable_xcb=no

-fi

-

-dnl Direct rendering or just indirect rendering

-case "$host_os" in

-gnu*)

-    dnl Disable by default on GNU/Hurd

-    driglx_direct_default="no"

-    ;;

-cygwin*)

-    dnl Disable by default on cygwin

-    driglx_direct_default="no"

-    ;;

-*)

-    driglx_direct_default="yes"

-    ;;

-esac

-AC_ARG_ENABLE([driglx-direct],

-    [AS_HELP_STRING([--disable-driglx-direct],

-        [enable direct rendering in GLX and EGL for DRI \

-            @<:@default=auto@:>@])],

-    [driglx_direct="$enableval"],

-    [driglx_direct="$driglx_direct_default"])

-

-dnl

-dnl libGL configuration per driver

-dnl

-case "$mesa_driver" in

-xlib)

-    if test "$x11_pkgconfig" = yes; then

-        PKG_CHECK_MODULES([XLIBGL], [x11 xext])

-        GL_PC_REQ_PRIV="x11 xext"

-        X11_INCLUDES="$X11_INCLUDES $XLIBGL_CFLAGS"

-        GL_LIB_DEPS="$XLIBGL_LIBS"

-    else

-        # should check these...

-        X11_INCLUDES="$X11_INCLUDES $X_CFLAGS"

-        GL_LIB_DEPS="$X_LIBS -lX11 -lXext"

-        GL_PC_LIB_PRIV="$GL_LIB_DEPS"

-        GL_PC_CFLAGS="$X11_INCLUDES"

-    fi

-    GL_LIB_DEPS="$GL_LIB_DEPS $SELINUX_LIBS -lm -lpthread"

-    GL_PC_LIB_PRIV="$GL_PC_LIB_PRIV $SELINUX_LIBS -lm -lpthread"

-

-    # if static, move the external libraries to the programs

-    # and empty the libraries for libGL

-    if test "$enable_static" = yes; then

-        APP_LIB_DEPS="$APP_LIB_DEPS $GL_LIB_DEPS"

-        GL_LIB_DEPS=""

-    fi

-    ;;

-dri|no) # these checks are still desired when there is no mesa_driver

-    # DRI must be shared, I think

-    if test "$enable_static" = yes; then

-        AC_MSG_ERROR([Can't use static libraries for DRI drivers])

-    fi

-

-    PKG_CHECK_MODULES([GLPROTO], [glproto >= $GLPROTO_REQUIRED])

-    GL_PC_REQ_PRIV="glproto >= $GLPROTO_REQUIRED"

-    DRI_PC_REQ_PRIV=""

-

-    if test x"$driglx_direct" = xyes; then

-        # Check for libdrm

-        PKG_CHECK_MODULES([LIBDRM], [libdrm >= $LIBDRM_REQUIRED])

-        PKG_CHECK_MODULES([DRI2PROTO], [dri2proto >= $DRI2PROTO_REQUIRED])

-        GL_PC_REQ_PRIV="$GL_PC_REQ_PRIV libdrm >= $LIBDRM_REQUIRED dri2proto >= $DRI2PROTO_REQUIRED"

-        DRI_PC_REQ_PRIV="libdrm >= $LIBDRM_REQUIRED"

-    fi

-

-    # find the DRI deps for libGL

-    if test "$x11_pkgconfig" = yes; then

-        dri_modules="x11 xext xdamage xfixes"

-

-        # add xf86vidmode if available

-        PKG_CHECK_MODULES([XF86VIDMODE], [xxf86vm], HAVE_XF86VIDMODE=yes, HAVE_XF86VIDMODE=no)

-        if test "$HAVE_XF86VIDMODE" = yes ; then

-            dri_modules="$dri_modules xxf86vm"

-        fi

-

-        # add xcb modules if necessary

-        if test "$enable_xcb" = yes; then

-            dri_modules="$dri_modules x11-xcb xcb-glx"

-        fi

-

-        PKG_CHECK_MODULES([DRIGL], [$dri_modules])

-        GL_PC_REQ_PRIV="$GL_PC_REQ_PRIV $dri_modules"

-        X11_INCLUDES="$X11_INCLUDES $DRIGL_CFLAGS"

-        GL_LIB_DEPS="$DRIGL_LIBS"

-    else

-        # should check these...

-        X11_INCLUDES="$X11_INCLUDES $X_CFLAGS"

-        GL_LIB_DEPS="$X_LIBS -lX11 -lXext -lXxf86vm -lXdamage -lXfixes"

-        GL_PC_LIB_PRIV="$GL_LIB_DEPS"

-        GL_PC_CFLAGS="$X11_INCLUDES"

-

-        # XCB can only be used from pkg-config

-        if test "$enable_xcb" = yes; then

-            PKG_CHECK_MODULES([XCB],[x11-xcb xcb-glx])

-            GL_PC_REQ_PRIV="$GL_PC_REQ_PRIV x11-xcb xcb-glx"

-            X11_INCLUDES="$X11_INCLUDES $XCB_CFLAGS"

-            GL_LIB_DEPS="$GL_LIB_DEPS $XCB_LIBS"

-        fi

-    fi

-

-    # need DRM libs, -lpthread, etc.

-    GL_LIB_DEPS="$GL_LIB_DEPS $LIBDRM_LIBS -lm -lpthread $DLOPEN_LIBS"

-    GL_PC_LIB_PRIV="-lm -lpthread $DLOPEN_LIBS"

-    GLESv1_CM_LIB_DEPS="$LIBDRM_LIBS -lm -lpthread $DLOPEN_LIBS"

-    GLESv1_CM_PC_LIB_PRIV="-lm -lpthread $DLOPEN_LIBS"

-    GLESv2_LIB_DEPS="$LIBDRM_LIBS -lm -lpthread $DLOPEN_LIBS"

-    GLESv2_PC_LIB_PRIV="-lm -lpthread $DLOPEN_LIBS"

-    ;;

-osmesa)

-    # No libGL for osmesa

-    GL_LIB_DEPS=""

-    ;;

-esac

-AC_SUBST([GL_LIB_DEPS])

-AC_SUBST([GL_PC_REQ_PRIV])

-AC_SUBST([GL_PC_LIB_PRIV])

-AC_SUBST([GL_PC_CFLAGS])

-AC_SUBST([DRI_PC_REQ_PRIV])

-AC_SUBST([GLESv1_CM_LIB_DEPS])

-AC_SUBST([GLESv1_CM_PC_LIB_PRIV])

-AC_SUBST([GLESv2_LIB_DEPS])

-AC_SUBST([GLESv2_PC_LIB_PRIV])

-

-GLAPI_LIB_DEPS="-lpthread"

-AC_SUBST([GLAPI_LIB_DEPS])

-

-

-dnl Setup default DRI CFLAGS

-DRI_CFLAGS='$(CFLAGS)'

-DRI_CXXFLAGS='$(CXXFLAGS)'

-DRI_LIB_DEPS='$(TOP)/src/mesa/libmesa.a'

-MESA_MODULES='$(TOP)/src/mesa/libmesa.a'

-

-AC_ARG_ENABLE([shared-dricore],

-    [AS_HELP_STRING([--enable-shared-dricore],

-        [link DRI modules with shared core DRI routines @<:@default=disabled@:>@])],

-    [enable_dricore="$enableval"],

-    [enable_dricore=no])

-if test "$mesa_driver" = dri ; then

-   if test "$enable_dricore" = yes ; then

-      if test "$GCC$GXX" != yesyes ; then

-      	 AC_MSG_WARN([Shared dricore requires GCC-compatible rpath handling.  Disabling shared dricore])

-	 enable_dricore=no

-      else

-	 DRICORE_GLSL_LIBS='$(TOP)/$(LIB_DIR)/libglsl.so'

-	 DRICORE_LIBS='$(TOP)/$(LIB_DIR)/libdricore.so'

-	 DRICORE_LIB_DEPS='-L$(TOP)/$(LIB_DIR) -Wl,-R$(DRI_DRIVER_INSTALL_DIR) -lglsl'

-      	 DRI_LIB_DEPS='-L$(TOP)/$(LIB_DIR) -Wl,-R$(DRI_DRIVER_INSTALL_DIR) -ldricore -lglsl'

-      	 DRI_CFLAGS='$(CFLAGS_NOVISIBILITY) -DUSE_DRICORE'

-      	 DRI_CXXFLAGS='$(CXXFLAGS_NOVISIBILITY) -DUSE_DRICORE'

-      	 MESA_MODULES='$(DRICORE_LIBS) $(DRICORE_GLSL_LIBS)'

-      fi

-   fi

-fi

-AC_SUBST([DRICORE_LIBS])

-AC_SUBST([DRICORE_GLSL_LIBS])

-AC_SUBST([DRICORE_LIB_DEPS])

-AC_SUBST([DRI_CXXFLAGS])

-AC_SUBST([DRI_CFLAGS])

-AC_SUBST([MESA_MODULES])

-

-AC_SUBST([HAVE_XF86VIDMODE])

-

-PKG_CHECK_MODULES([LIBDRM_RADEON],

-		  [libdrm_radeon >= $LIBDRM_RADEON_REQUIRED],

-		  HAVE_LIBDRM_RADEON=yes,

-		  HAVE_LIBDRM_RADEON=no)

-

-dnl

-dnl More X11 setup

-dnl

-if test "$mesa_driver" = xlib; then

-    DEFINES="$DEFINES -DUSE_XSHM"

-fi

-

-dnl

-dnl TLS detection

-dnl

-

-AC_ARG_ENABLE([glx-tls],

-    [AS_HELP_STRING([--enable-glx-tls],

-        [enable TLS support in GLX @<:@default=disabled@:>@])],

-    [GLX_USE_TLS="$enableval"],

-    [GLX_USE_TLS=no])

-AC_SUBST(GLX_TLS, ${GLX_USE_TLS})

-

-AS_IF([test "x$GLX_USE_TLS" = xyes],

-      [DEFINES="${DEFINES} -DGLX_USE_TLS -DPTHREADS"])

-

-dnl

-dnl More DRI setup

-dnl

-dnl Directory for DRI drivers

-AC_ARG_WITH([dri-driverdir],

-    [AS_HELP_STRING([--with-dri-driverdir=DIR],

-        [directory for the DRI drivers @<:@${libdir}/dri@:>@])],

-    [DRI_DRIVER_INSTALL_DIR="$withval"],

-    [DRI_DRIVER_INSTALL_DIR='${libdir}/dri'])

-AC_SUBST([DRI_DRIVER_INSTALL_DIR])

-dnl Extra search path for DRI drivers

-AC_ARG_WITH([dri-searchpath],

-    [AS_HELP_STRING([--with-dri-searchpath=DIRS...],

-        [semicolon delimited DRI driver search directories @<:@${libdir}/dri@:>@])],

-    [DRI_DRIVER_SEARCH_DIR="$withval"],

-    [DRI_DRIVER_SEARCH_DIR='${DRI_DRIVER_INSTALL_DIR}'])

-AC_SUBST([DRI_DRIVER_SEARCH_DIR])

-dnl Which drivers to build - default is chosen by platform

-AC_ARG_WITH([dri-drivers],

-    [AS_HELP_STRING([--with-dri-drivers@<:@=DIRS...@:>@],

-        [comma delimited DRI drivers list, e.g.

-        "swrast,i965,radeon" @<:@default=auto@:>@])],

-    [with_dri_drivers="$withval"],

-    [with_dri_drivers=yes])

-if test "x$with_dri_drivers" = x; then

-    with_dri_drivers=no

-fi

-

-dnl If $with_dri_drivers is yes, directories will be added through

-dnl platform checks

-DRI_DIRS=""

-case "$with_dri_drivers" in

-no) ;;

-yes)

-    DRI_DIRS="yes"

-    ;;

-*)

-    # verify the requested driver directories exist

-    dri_drivers=`IFS=', '; echo $with_dri_drivers`

-    for driver in $dri_drivers; do

-        test -d "$srcdir/src/mesa/drivers/dri/$driver" || \

-            AC_MSG_ERROR([DRI driver directory '$driver' doesn't exist])

-    done

-    DRI_DIRS="$dri_drivers"

-    ;;

-esac

-

-dnl Set DRI_DIRS, DEFINES and LIB_DEPS

-if test "$mesa_driver" = dri -o "$mesa_driver" = no; then

-    # Platform specific settings and drivers to build

-    case "$host_os" in

-    linux*)

-        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER"

-        if test "x$driglx_direct" = xyes; then

-            DEFINES="$DEFINES -DGLX_DIRECT_RENDERING"

-        fi

-        DEFINES="$DEFINES -DGLX_INDIRECT_RENDERING -DHAVE_ALIAS"

-

-        case "$host_cpu" in

-        x86_64)

-            # sis is missing because they have not be converted to use

-            # the new interface.  i810 are missing because there is no

-            # x86-64 system where they could *ever* be used.

-            if test "x$DRI_DIRS" = "xyes"; then

-                DRI_DIRS="i915 i965 mach64 mga r128 r200 r300 r600 radeon \

-                    savage tdfx unichrome swrast"

-            fi

-            ;;

-        powerpc*)

-            # Build only the drivers for cards that exist on PowerPC.

-            # At some point MGA will be added, but not yet.

-            if test "x$DRI_DIRS" = "xyes"; then

-                DRI_DIRS="mach64 r128 r200 r300 r600 radeon tdfx swrast"

-            fi

-            ;;

-        sparc*)

-            # Build only the drivers for cards that exist on sparc`

-            if test "x$DRI_DIRS" = "xyes"; then

-                DRI_DIRS="mach64 r128 r200 r300 r600 radeon swrast"

-            fi

-            ;;

-        esac

-        ;;

-    freebsd* | dragonfly* | *netbsd*)

-        DEFINES="$DEFINES -DPTHREADS -DUSE_EXTERNAL_DXTN_LIB=1"

-        DEFINES="$DEFINES -DIN_DRI_DRIVER -DHAVE_ALIAS"

-        DEFINES="$DEFINES -DGLX_INDIRECT_RENDERING"

-        if test "x$driglx_direct" = xyes; then

-            DEFINES="$DEFINES -DGLX_DIRECT_RENDERING"

-        fi

-

-        if test "x$DRI_DIRS" = "xyes"; then

-            DRI_DIRS="i810 i915 i965 mach64 mga r128 r200 r300 r600 radeon tdfx \

-                unichrome savage sis swrast"

-        fi

-        ;;

-    gnu*)

-        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER"

-        DEFINES="$DEFINES -DGLX_INDIRECT_RENDERING -DHAVE_ALIAS"

-	;;

-    solaris*)

-        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER"

-        DEFINES="$DEFINES -DGLX_INDIRECT_RENDERING"

-        if test "x$driglx_direct" = xyes; then

-            DEFINES="$DEFINES -DGLX_DIRECT_RENDERING"

-        fi

-        ;;

-    cygwin*)

-        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER"

-        DEFINES="$DEFINES -DGLX_INDIRECT_RENDERING"

-        if test "x$driglx_direct" = xyes; then

-            DEFINES="$DEFINES -DGLX_DIRECT_RENDERING"

-        fi

-        if test "x$DRI_DIRS" = "xyes"; then

-            DRI_DIRS="swrast"

-        fi

-        ;;

-    esac

-

-    # default drivers

-    if test "x$DRI_DIRS" = "xyes"; then

-        DRI_DIRS="i810 i915 i965 mach64 mga r128 r200 r300 r600 radeon \

-            savage sis tdfx unichrome swrast"

-    fi

-

-    DRI_DIRS=`echo "$DRI_DIRS" | $SED 's/  */ /g'`

-

-    # Check for expat

-    if test "$mesa_driver" = dri; then

-        EXPAT_INCLUDES=""

-        EXPAT_LIB=-lexpat

-        AC_ARG_WITH([expat],

-            [AS_HELP_STRING([--with-expat=DIR],

-                [expat install directory])],[

-            EXPAT_INCLUDES="-I$withval/include"

-            CPPFLAGS="$CPPFLAGS $EXPAT_INCLUDES"

-            LDFLAGS="$LDFLAGS -L$withval/$LIB_DIR"

-            EXPAT_LIB="-L$withval/$LIB_DIR -lexpat"

-            ])

-        AC_CHECK_HEADER([expat.h],[],[AC_MSG_ERROR([Expat required for DRI.])])

-        AC_CHECK_LIB([expat],[XML_ParserCreate],[],

-            [AC_MSG_ERROR([Expat required for DRI.])])

-    fi

-

-    # put all the necessary libs together, including possibly libdricore

-    DRI_LIB_DEPS="$DRI_LIB_DEPS $SELINUX_LIBS $LIBDRM_LIBS $EXPAT_LIB -lm -lpthread $DLOPEN_LIBS"

-fi

-AC_SUBST([DRI_DIRS])

-AC_SUBST([EXPAT_INCLUDES])

-AC_SUBST([DRI_LIB_DEPS])

-

-case $DRI_DIRS in

-*i915*|*i965*)

-    PKG_CHECK_MODULES([INTEL], [libdrm_intel >= $LIBDRM_INTEL_REQUIRED])

-    ;;

-esac

-

-case $DRI_DIRS in

-*radeon*|*r200*|*r300*|*r600*)

-    if test "x$HAVE_LIBDRM_RADEON" = xyes; then

-	RADEON_CFLAGS="-DHAVE_LIBDRM_RADEON=1 $LIBDRM_RADEON_CFLAGS"

-	RADEON_LDFLAGS=$LIBDRM_RADEON_LIBS

-    fi

-    ;;

-esac

-AC_SUBST([RADEON_CFLAGS])

-AC_SUBST([RADEON_LDFLAGS])

-

-

-dnl

-dnl OSMesa configuration

-dnl

-if test "$mesa_driver" = xlib; then

-    default_gl_osmesa=yes

-else

-    default_gl_osmesa=no

-fi

-AC_ARG_ENABLE([gl-osmesa],

-    [AS_HELP_STRING([--enable-gl-osmesa],

-        [enable OSMesa with libGL @<:@default=enabled for xlib driver@:>@])],

-    [gl_osmesa="$enableval"],

-    [gl_osmesa="$default_gl_osmesa"])

-if test "x$gl_osmesa" = xyes; then

-    if test "x$enable_opengl" = xno; then

-        AC_MSG_ERROR([OpenGL is not available for OSMesa driver])

-    fi

-    if test "$mesa_driver" = osmesa; then

-        AC_MSG_ERROR([libGL is not available for OSMesa driver])

-    else

-        DRIVER_DIRS="$DRIVER_DIRS osmesa"

-    fi

-fi

-

-dnl Configure the channel bits for OSMesa (libOSMesa, libOSMesa16, ...)

-AC_ARG_WITH([osmesa-bits],

-    [AS_HELP_STRING([--with-osmesa-bits=BITS],

-        [OSMesa channel bits and library name: 8, 16, 32 @<:@default=8@:>@])],

-    [osmesa_bits="$withval"],

-    [osmesa_bits=8])

-if test "$mesa_driver" != osmesa && test "x$osmesa_bits" != x8; then

-    AC_MSG_WARN([Ignoring OSMesa channel bits for non-OSMesa driver])

-    osmesa_bits=8

-fi

-case "x$osmesa_bits" in

-x8)

-    OSMESA_LIB=OSMesa

-    ;;

-x16|x32)

-    OSMESA_LIB="OSMesa$osmesa_bits"

-    DEFINES="$DEFINES -DCHAN_BITS=$osmesa_bits -DDEFAULT_SOFTWARE_DEPTH_BITS=31"

-    ;;

-*)

-    AC_MSG_ERROR([OSMesa bits '$osmesa_bits' is not a valid option])

-    ;;

-esac

-AC_SUBST([OSMESA_LIB])

-

-case "$DRIVER_DIRS" in

-*osmesa*)

-    # only link libraries with osmesa if shared

-    if test "$enable_static" = no; then

-        OSMESA_LIB_DEPS="-lm -lpthread $SELINUX_LIBS $DLOPEN_LIBS"

-    else

-        OSMESA_LIB_DEPS=""

-    fi

-    OSMESA_MESA_DEPS=""

-    OSMESA_PC_LIB_PRIV="-lm -lpthread $SELINUX_LIBS $DLOPEN_LIBS"

-    ;;

-esac

-AC_SUBST([OSMESA_LIB_DEPS])

-AC_SUBST([OSMESA_MESA_DEPS])

-AC_SUBST([OSMESA_PC_REQ])

-AC_SUBST([OSMESA_PC_LIB_PRIV])

-

-dnl

-dnl EGL configuration

-dnl

-AC_ARG_ENABLE([egl],

-    [AS_HELP_STRING([--disable-egl],

-        [disable EGL library @<:@default=enabled@:>@])],

-    [enable_egl="$enableval"],

-    [enable_egl=yes])

-if test "x$enable_egl" = xno; then

-    if test "x$mesa_driver" = xno; then

-        AC_MSG_ERROR([cannot disable EGL when there is no mesa driver])

-    fi

-    if test "x$enable_openvg" = xyes; then

-        AC_MSG_ERROR([cannot enable OpenVG without EGL])

-    fi

-fi

-if test "x$enable_egl" = xyes; then

-    SRC_DIRS="$SRC_DIRS egl"

-    EGL_LIB_DEPS="$DLOPEN_LIBS -lpthread"

-    EGL_DRIVERS_DIRS=""

-    if test "$enable_static" != yes; then

-        # build egl_glx when libGL is built

-        if test "$mesa_driver" = xlib -o "$mesa_driver" = dri; then

-            EGL_DRIVERS_DIRS="glx"

-        fi

-

-        if test "$mesa_driver" = dri; then

-            # build egl_dri2 when xcb-dri2 is available

-            PKG_CHECK_MODULES([XCB_DRI2], [x11-xcb xcb-dri2 xcb-xfixes],

-            		  [have_xcb_dri2=yes],[have_xcb_dri2=no])

-            PKG_CHECK_MODULES([LIBUDEV], [libudev > 150],

-            		  [have_libudev=yes],[have_libudev=no])

-            

-            if test "$have_xcb_dri2" = yes; then

-                EGL_DRIVER_DRI2=dri2

-                DEFINES="$DEFINES -DHAVE_XCB_DRI2"

-                if test "$have_libudev" = yes; then

-                    DEFINES="$DEFINES -DHAVE_LIBUDEV"

-                fi

-                # workaround a bug in xcb-dri2 generated by xcb-proto 1.6

-                AC_CHECK_LIB(xcb-dri2, xcb_dri2_connect_alignment_pad, [],

-                          [DEFINES="$DEFINES -DXCB_DRI2_CONNECT_DEVICE_NAME_BROKEN"])

-            fi

-	fi

-

-        EGL_DRIVERS_DIRS="$EGL_DRIVERS_DIRS $EGL_DRIVER_DRI2"

-    fi

-fi

-AC_SUBST([EGL_LIB_DEPS])

-AC_SUBST([EGL_DRIVERS_DIRS])

-

-dnl

-dnl GLU configuration

-dnl

-AC_ARG_ENABLE([glu],

-    [AS_HELP_STRING([--disable-glu],

-        [enable OpenGL Utility library @<:@default=enabled@:>@])],

-    [enable_glu="$enableval"],

-    [enable_glu=yes])

-

-if test "x$enable_glu" = xyes -a "x$mesa_driver" = xno; then

-    AC_MSG_NOTICE([Disabling GLU since there is no OpenGL driver])

-    enable_glu=no

-fi

-

-if test "x$enable_glu" = xyes; then

-    SRC_DIRS="$SRC_DIRS glu"

-

-    case "$mesa_driver" in

-    osmesa)

-        # Link libGLU to libOSMesa instead of libGL

-        GLU_LIB_DEPS=""

-        GLU_PC_REQ="osmesa"

-        if test "$enable_static" = no; then

-            GLU_MESA_DEPS='-l$(OSMESA_LIB)'

-        else

-            GLU_MESA_DEPS=""

-        fi

-        ;;

-    *)

-        # If static, empty GLU_LIB_DEPS and add libs for programs to link

-        GLU_PC_REQ="gl"

-        GLU_PC_LIB_PRIV="-lm"

-        if test "$enable_static" = no; then

-            GLU_LIB_DEPS="-lm"

-            GLU_MESA_DEPS='-l$(GL_LIB)'

-        else

-            GLU_LIB_DEPS=""

-            GLU_MESA_DEPS=""

-            APP_LIB_DEPS="$APP_LIB_DEPS -lstdc++"

-        fi

-        ;;

-    esac

-fi

-if test "$enable_static" = no; then

-    GLU_LIB_DEPS="$GLU_LIB_DEPS $OS_CPLUSPLUS_LIBS"

-fi

-GLU_PC_LIB_PRIV="$GLU_PC_LIB_PRIV $OS_CPLUSPLUS_LIBS"

-AC_SUBST([GLU_LIB_DEPS])

-AC_SUBST([GLU_MESA_DEPS])

-AC_SUBST([GLU_PC_REQ])

-AC_SUBST([GLU_PC_REQ_PRIV])

-AC_SUBST([GLU_PC_LIB_PRIV])

-AC_SUBST([GLU_PC_CFLAGS])

-

-dnl

-dnl GLw configuration

-dnl

-AC_ARG_ENABLE([glw],

-    [AS_HELP_STRING([--disable-glw],

-        [enable Xt/Motif widget library @<:@default=enabled@:>@])],

-    [enable_glw="$enableval"],

-    [enable_glw=yes])

-dnl Don't build GLw on osmesa

-if test "x$enable_glw" = xyes; then

-    case "$mesa_driver" in

-    osmesa|no)

-        AC_MSG_NOTICE([Disabling GLw since there is no OpenGL driver])

-        enable_glw=no

-        ;;

-    esac

-fi

-AC_ARG_ENABLE([motif],

-    [AS_HELP_STRING([--enable-motif],

-        [use Motif widgets in GLw @<:@default=disabled@:>@])],

-    [enable_motif="$enableval"],

-    [enable_motif=no])

-

-if test "x$enable_glw" = xyes; then

-    SRC_DIRS="$SRC_DIRS glw"

-    if test "$x11_pkgconfig" = yes; then

-        PKG_CHECK_MODULES([GLW],[x11 xt])

-        GLW_PC_REQ_PRIV="x11 xt"

-        GLW_LIB_DEPS="$GLW_LIBS"

-    else

-        # should check these...

-        GLW_LIB_DEPS="$X_LIBS -lXt -lX11"

-        GLW_PC_LIB_PRIV="$GLW_LIB_DEPS"

-        GLW_PC_CFLAGS="$X11_INCLUDES"

-    fi

-

-    GLW_SOURCES="GLwDrawA.c"

-    MOTIF_CFLAGS=

-    if test "x$enable_motif" = xyes; then

-        GLW_SOURCES="$GLW_SOURCES GLwMDrawA.c"

-        AC_PATH_PROG([MOTIF_CONFIG], [motif-config], [no])

-        if test "x$MOTIF_CONFIG" != xno; then

-            MOTIF_CFLAGS=`$MOTIF_CONFIG --cflags`

-            MOTIF_LIBS=`$MOTIF_CONFIG --libs`

-        else

-            AC_CHECK_HEADER([Xm/PrimitiveP.h], [],

-                [AC_MSG_ERROR([Can't locate Motif headers])])

-            AC_CHECK_LIB([Xm], [XmGetPixmap], [MOTIF_LIBS="-lXm"],

-                [AC_MSG_ERROR([Can't locate Motif Xm library])])

-        fi

-        # MOTIF_LIBS is prepended to GLW_LIB_DEPS since Xm needs Xt/X11

-        GLW_LIB_DEPS="$MOTIF_LIBS $GLW_LIB_DEPS"

-        GLW_PC_LIB_PRIV="$MOTIF_LIBS $GLW_PC_LIB_PRIV"

-        GLW_PC_CFLAGS="$MOTIF_CFLAGS $GLW_PC_CFLAGS"

-    fi

-

-    # If static, empty GLW_LIB_DEPS and add libs for programs to link

-    GLW_PC_LIB_PRIV="$GLW_PC_LIB_PRIV"

-    if test "$enable_static" = no; then

-        GLW_MESA_DEPS='-l$(GL_LIB)'

-        GLW_LIB_DEPS="$GLW_LIB_DEPS"

-    else

-        APP_LIB_DEPS="$APP_LIB_DEPS $GLW_LIB_DEPS"

-        GLW_LIB_DEPS=""

-        GLW_MESA_DEPS=""

-    fi

-fi

-AC_SUBST([GLW_LIB_DEPS])

-AC_SUBST([GLW_MESA_DEPS])

-AC_SUBST([GLW_SOURCES])

-AC_SUBST([MOTIF_CFLAGS])

-AC_SUBST([GLW_PC_REQ_PRIV])

-AC_SUBST([GLW_PC_LIB_PRIV])

-AC_SUBST([GLW_PC_CFLAGS])

-

-dnl

-dnl GLUT configuration

-dnl

-if test -f "$srcdir/include/GL/glut.h"; then

-    default_glut=yes

-else

-    default_glut=no

-fi

-AC_ARG_ENABLE([glut],

-    [AS_HELP_STRING([--disable-glut],

-        [enable GLUT library @<:@default=enabled if source available@:>@])],

-    [enable_glut="$enableval"],

-    [enable_glut="$default_glut"])

-

-dnl Don't build glut on osmesa

-if test "x$enable_glut" = xyes; then

-    case "$mesa_driver" in

-    osmesa|no)

-        AC_MSG_NOTICE([Disabling glut since there is no OpenGL driver])

-        enable_glut=no

-        ;;

-    esac

-fi

-dnl Can't build glut if GLU not available

-if test "x$enable_glu$enable_glut" = xnoyes; then

-    AC_MSG_WARN([Disabling glut since GLU is disabled])

-    enable_glut=no

-fi

-

-if test "x$enable_glut" = xyes; then

-    SRC_DIRS="$SRC_DIRS glut/glx"

-    if test "$x11_pkgconfig" = yes; then

-        PKG_CHECK_MODULES([GLUT],[x11 xmu xi])

-        GLUT_PC_REQ_PRIV="x11 xmu xi"

-        GLUT_LIB_DEPS="$GLUT_LIBS"

-    else

-        # should check these...

-        GLUT_LIB_DEPS="$X_LIBS -lX11 -lXmu -lXi"

-        GLUT_PC_LIB_PRIV="$GLUT_LIB_DEPS"

-        GLUT_PC_CFLAGS="$X11_INCLUDES"

-    fi

-    if test "x$GCC" = xyes; then

-        GLUT_CFLAGS="$GLUT_CFLAGS -fexceptions"

-    fi

-    GLUT_LIB_DEPS="$GLUT_LIB_DEPS -lm"

-    GLUT_PC_LIB_PRIV="$GLUT_PC_LIB_PRIV -lm"

-

-    # If static, empty GLUT_LIB_DEPS and add libs for programs to link

-    if test "$enable_static" = no; then

-        GLUT_MESA_DEPS='-l$(GLU_LIB) -l$(GL_LIB)'

-    else

-        APP_LIB_DEPS="$APP_LIB_DEPS $GLUT_LIB_DEPS"

-        GLUT_LIB_DEPS=""

-        GLUT_MESA_DEPS=""

-    fi

-fi

-AC_SUBST([GLUT_LIB_DEPS])

-AC_SUBST([GLUT_MESA_DEPS])

-AC_SUBST([GLUT_CFLAGS])

-AC_SUBST([GLUT_PC_REQ_PRIV])

-AC_SUBST([GLUT_PC_LIB_PRIV])

-AC_SUBST([GLUT_PC_CFLAGS])

-

-dnl

-dnl Program library dependencies

-dnl    Only libm is added here if necessary as the libraries should

-dnl    be pulled in by the linker

-dnl

-if test "x$APP_LIB_DEPS" = x; then

-    case "$host_os" in

-    solaris*)

-        APP_LIB_DEPS="-lX11 -lsocket -lnsl -lm"

-        ;;

-    cygwin*)

-        APP_LIB_DEPS="-lX11"

-        ;;

-    *)

-        APP_LIB_DEPS="-lm"

-        ;;

-    esac

-fi

-AC_SUBST([APP_LIB_DEPS])

-AC_SUBST([PROGRAM_DIRS])

-

-dnl

-dnl Gallium configuration

-dnl

-AC_ARG_ENABLE([gallium],

-    [AS_HELP_STRING([--disable-gallium],

-        [build gallium @<:@default=enabled@:>@])],

-    [enable_gallium="$enableval"],

-    [enable_gallium=yes])

-if test "x$enable_gallium" = xno -a "x$enable_openvg" = xyes; then

-    AC_MSG_ERROR([cannot enable OpenVG without Gallium])

-fi

-if test "x$enable_gallium" = xyes; then

-    SRC_DIRS="$SRC_DIRS gallium gallium/winsys gallium/targets"

-    AC_PATH_PROG([LLVM_CONFIG], [llvm-config], [no])

-fi

-

-AC_SUBST([LLVM_CFLAGS])

-AC_SUBST([LLVM_LIBS])

-AC_SUBST([LLVM_LDFLAGS])

-AC_SUBST([LLVM_VERSION])

-

-dnl

-dnl Gallium state trackers configuration

-dnl

-

-AC_ARG_ENABLE([gallium-egl],

-    [AS_HELP_STRING([--enable-gallium-egl],

-        [enable gallium EGL state tracker @<:@default=auto@:>@])],

-    [enable_gallium_egl="$enableval"],

-    [enable_gallium_egl=auto])

-if test "x$enable_gallium_egl" = xauto; then

-    case "$mesa_driver" in

-    dri|no)

-        enable_gallium_egl=$enable_egl

-        ;;

-    *)

-        enable_gallium_egl=$enable_openvg

-        ;;

-    esac

-fi

-case "x$enable_egl$enable_gallium_egl" in

-xnoyes)

-    AC_MSG_ERROR([cannot build Gallium EGL state tracker without EGL])

-esac

-

-AC_ARG_WITH([state-trackers],

-    [AS_HELP_STRING([--with-state-trackers@<:@=DIRS...@:>@],

-        [comma delimited state_trackers list, e.g.

-        "egl,glx" @<:@default=auto@:>@])],

-    [with_state_trackers="$withval"],

-    [with_state_trackers=yes])

-

-case "$with_state_trackers" in

-no)

-    GALLIUM_STATE_TRACKERS_DIRS=""

-    ;;

-yes)

-    # look at what else is built

-    case "$mesa_driver" in

-    xlib)

-        GALLIUM_STATE_TRACKERS_DIRS=glx

-        ;;

-    dri)

-        GALLIUM_STATE_TRACKERS_DIRS="dri"

-        HAVE_ST_DRI="yes"

-        # Have only tested st/xorg on 1.6.0 servers

-        PKG_CHECK_MODULES(XORG, [xorg-server >= 1.6.0 libdrm >= $LIBDRM_XORG_REQUIRED libkms >= $LIBKMS_XORG_REQUIRED],

-            HAVE_ST_XORG="yes"; GALLIUM_STATE_TRACKERS_DIRS="$GALLIUM_STATE_TRACKERS_DIRS xorg",

-            HAVE_ST_XORG="no")

-        ;;

-    esac

-

-    if test "x$enable_egl" = xyes; then

-        if test "$enable_openvg" = yes; then

-            GALLIUM_STATE_TRACKERS_DIRS="$GALLIUM_STATE_TRACKERS_DIRS vega"

-            st_egl="yes"

-        fi

-

-        if test "$enable_gallium_egl" = yes; then

-            GALLIUM_STATE_TRACKERS_DIRS="$GALLIUM_STATE_TRACKERS_DIRS egl"

-            HAVE_ST_EGL="yes"

-        fi

-    fi

-    ;;

-*)

-    # verify the requested state tracker exist

-    state_trackers=""

-    _state_trackers=`IFS=', '; echo $with_state_trackers`

-    for tracker in $_state_trackers; do

-        case "$tracker" in

-        dri)

-            if test "x$mesa_driver" != xdri; then

-                AC_MSG_ERROR([cannot build dri state tracker without mesa driver set to dri])

-            fi

-            HAVE_ST_DRI="yes"

-            ;;

-        egl)

-            if test "x$enable_egl" != xyes; then

-                AC_MSG_ERROR([cannot build egl state tracker without EGL library])

-            fi

-            HAVE_ST_EGL="yes"

-            ;;

-        xorg)

-            PKG_CHECK_MODULES([XORG], [xorg-server >= 1.6.0])

-            PKG_CHECK_MODULES([LIBDRM_XORG], [libdrm >= $LIBDRM_XORG_REQUIRED])

-            PKG_CHECK_MODULES([LIBKMS_XORG], [libkms >= $LIBKMS_XORG_REQUIRED])

-            HAVE_ST_XORG="yes"

-            ;;

-        vega)

-            if test "x$enable_openvg" != xyes; then

-                AC_MSG_ERROR([cannot build vega state tracker without --enable-openvg])

-            fi

-            have_st_vega="yes"

-            ;;

-        esac

-

-	if test -n "$tracker"; then

-            test -d "$srcdir/src/gallium/state_trackers/$tracker" || \

-                AC_MSG_ERROR([state tracker '$tracker' doesn't exist])

-            if test -n "$state_trackers"; then

-                state_trackers="$state_trackers $tracker"

-            else

-                state_trackers="$tracker"

-            fi

-        fi

-    done

-    GALLIUM_STATE_TRACKERS_DIRS="$state_trackers"

-

-    # append --enable-openvg/--enable-gallium-egl to --with-state-trackers

-    if test "x$have_st_vega" != xyes -a "x$enable_openvg" = xyes; then

-        AC_MSG_ERROR([--with-state-trackers specified but vega is missing])

-    fi

-    if test "x$HAVE_ST_EGL" != xyes -a "x$enable_gallium_egl" = xyes; then

-        AC_MSG_ERROR([--with-state-trackers specified but egl is missing])

-    fi

-    ;;

-esac

-

-

-EGL_CLIENT_APIS=""

-VG_LIB_DEPS=""

-

-case "x$enable_opengl$enable_gles1$enable_gles2" in

-x*yes*)

-    EGL_CLIENT_APIS="$EGL_CLIENT_APIS "'$(GL_LIB)'

-    ;;

-esac

-if test "x$enable_openvg" = xyes; then

-    EGL_CLIENT_APIS="$EGL_CLIENT_APIS "'$(VG_LIB)'

-    VG_LIB_DEPS="$VG_LIB_DEPS -lpthread"

-fi

-

-AC_SUBST([VG_LIB_DEPS])

-AC_SUBST([EGL_CLIENT_APIS])

-

-if test "x$HAVE_ST_EGL" = xyes; then

-	GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS egl"

-fi

-

-if test "x$HAVE_ST_XORG" = xyes; then

-    PKG_CHECK_MODULES(XEXT, [xextproto >= 7.0.99.1],

-        HAVE_XEXTPROTO_71="yes"; DEFINES="$DEFINES -DHAVE_XEXTPROTO_71",

-        HAVE_XEXTPROTO_71="no")

-fi

-

-AC_ARG_WITH([egl-platforms],

-    [AS_HELP_STRING([--with-egl-platforms@<:@=DIRS...@:>@],

-        [comma delimited native platforms libEGL supports, e.g.

-        "x11,drm" @<:@default=auto@:>@])],

-    [with_egl_platforms="$withval"],

-    [with_egl_platforms=yes])

-AC_ARG_WITH([egl-displays],

-    [AS_HELP_STRING([--with-egl-displays@<:@=DIRS...@:>@],

-        [DEPRECATED.  Use --with-egl-platforms instead])],

-    [with_egl_platforms="$withval"])

-

-EGL_PLATFORMS=""

-WAYLAND_EGL_LIB_DEPS=""

-

-case "$with_egl_platforms" in

-yes)

-    if test "x$enable_egl" = xyes && test "x$mesa_driver" != xosmesa; then

-        EGL_PLATFORMS="x11"

-        if test "$mesa_driver" = dri; then

-            EGL_PLATFORMS="$EGL_PLATFORMS drm"

-        fi

-    fi

-    ;;

-*)

-    if test "x$enable_egl" != xyes; then

-        AC_MSG_ERROR([cannot build egl state tracker without EGL library])

-    fi

-    # verify the requested driver directories exist

-    egl_platforms=`IFS=', '; echo $with_egl_platforms`

-    for plat in $egl_platforms; do

-        test -d "$srcdir/src/gallium/state_trackers/egl/$plat" || \

-            AC_MSG_ERROR([EGL platform '$plat' doesn't exist])

-        if test "$plat" = "fbdev"; then

-                GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/fbdev"

-        fi

-	if test "$plat" = "wayland"; then

-		PKG_CHECK_MODULES([WAYLAND], [wayland-client wayland-server],, \

-				  [AC_MSG_ERROR([cannot find libwayland-client])])

-		WAYLAND_EGL_LIB_DEPS="$WAYLAND_LIBS $LIBDRM_LIBS"

-	fi

-    done

-    EGL_PLATFORMS="$egl_platforms"

-    ;;

-esac

-AC_SUBST([EGL_PLATFORMS])

-

-AC_SUBST([WAYLAND_EGL_LIB_DEPS])

-WAYLAND_EGL_PC_REQ_PRIV="wayland-client libdrm"

-WAYLAND_EGL_PC_LIB_PRIV=

-WAYLAND_EGL_PC_CFLAGS=

-

-AC_SUBST([WAYLAND_EGL_PC_REQ_PRIV])

-AC_SUBST([WAYLAND_EGL_PC_LIB_PRIV])

-AC_SUBST([WAYLAND_EGL_PC_CFLAGS])

-

-

-AC_ARG_WITH([egl-driver-dir],

-    [AS_HELP_STRING([--with-egl-driver-dir=DIR],

-                    [directory for EGL drivers [[default=${libdir}/egl]]])],

-    [EGL_DRIVER_INSTALL_DIR="$withval"],

-    [EGL_DRIVER_INSTALL_DIR='${libdir}/egl'])

-AC_SUBST([EGL_DRIVER_INSTALL_DIR])

-

-AC_ARG_WITH([xorg-driver-dir],

-    [AS_HELP_STRING([--with-xorg-driver-dir=DIR],

-                    [Default xorg driver directory[[default=${libdir}/xorg/modules/drivers]]])],

-    [XORG_DRIVER_INSTALL_DIR="$withval"],

-    [XORG_DRIVER_INSTALL_DIR="${libdir}/xorg/modules/drivers"])

-AC_SUBST([XORG_DRIVER_INSTALL_DIR])

-

-AC_ARG_WITH([max-width],

-    [AS_HELP_STRING([--with-max-width=N],

-                    [Maximum framebuffer width (4096)])],

-    [DEFINES="${DEFINES} -DMAX_WIDTH=${withval}";

-     AS_IF([test "${withval}" -gt "4096"],

-           [AC_MSG_WARN([Large framebuffer: see s_tritemp.h comments.])])]

-)

-AC_ARG_WITH([max-height],

-    [AS_HELP_STRING([--with-max-height=N],

-                    [Maximum framebuffer height (4096)])],

-    [DEFINES="${DEFINES} -DMAX_HEIGHT=${withval}";

-     AS_IF([test "${withval}" -gt "4096"],

-           [AC_MSG_WARN([Large framebuffer: see s_tritemp.h comments.])])]

-)

-

-dnl

-dnl Gallium LLVM

-dnl

-AC_ARG_ENABLE([gallium-llvm],

-    [AS_HELP_STRING([--enable-gallium-llvm],

-        [build gallium LLVM support @<:@default=disabled@:>@])],

-    [enable_gallium_llvm="$enableval"],

-    [enable_gallium_llvm=auto])

-if test "x$enable_gallium_llvm" = xyes; then

-    if test "x$LLVM_CONFIG" != xno; then

-	LLVM_VERSION=`$LLVM_CONFIG --version`

-	LLVM_CFLAGS=`$LLVM_CONFIG --cppflags`

-	LLVM_LIBS="`$LLVM_CONFIG --libs` -lstdc++"

-

-	LLVM_LDFLAGS=`$LLVM_CONFIG --ldflags`

-	GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS llvmpipe"

-	DEFINES="$DEFINES -DGALLIUM_LLVMPIPE -D__STDC_CONSTANT_MACROS"

-	MESA_LLVM=1

-    else

-	MESA_LLVM=0

-    fi

-else

-    MESA_LLVM=0

-fi

-

-dnl

-dnl Gallium helper functions

-dnl

-gallium_check_st() {

-    if test "x$HAVE_ST_DRI" = xyes || test "x$HAVE_ST_XORG" = xyes; then

-         GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS $1"

-    fi

-    if test "x$HAVE_ST_DRI" = xyes && test "x$2" != x; then

-         GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS $2"

-    fi

-    if test "x$HAVE_ST_XORG" = xyes && test "x$3" != x; then

-         GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS $3"

-    fi

-}

-

-

-dnl

-dnl Gallium SVGA configuration

-dnl

-AC_ARG_ENABLE([gallium-svga],

-    [AS_HELP_STRING([--enable-gallium-svga],

-        [build gallium SVGA @<:@default=disabled@:>@])],

-    [enable_gallium_svga="$enableval"],

-    [enable_gallium_svga=auto])

-if test "x$enable_gallium_svga" = xyes; then

-    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS svga"

-    gallium_check_st "svga/drm" "dri-vmwgfx" "xorg-vmwgfx"

-elif test "x$enable_gallium_svga" = xauto; then

-    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS svga"

-fi

-

-dnl

-dnl Gallium i915 configuration

-dnl

-AC_ARG_ENABLE([gallium-i915],

-    [AS_HELP_STRING([--enable-gallium-i915],

-        [build gallium i915 @<:@default=disabled@:>@])],

-    [enable_gallium_i915="$enableval"],

-    [enable_gallium_i915=auto])

-if test "x$enable_gallium_i915" = xyes; then

-    GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS i915/sw"

-    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS i915"

-    gallium_check_st "i915/drm" "dri-i915" "xorg-i915"

-elif test "x$enable_gallium_i915" = xauto; then

-    GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS i915/sw"

-    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS i915"

-fi

-

-dnl

-dnl Gallium i965 configuration

-dnl

-AC_ARG_ENABLE([gallium-i965],

-    [AS_HELP_STRING([--enable-gallium-i965],

-        [build gallium i965 @<:@default=disabled@:>@])],

-    [enable_gallium_i965="$enableval"],

-    [enable_gallium_i965=auto])

-if test "x$enable_gallium_i965" = xyes; then

-    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS i965"

-    gallium_check_st "i965/drm" "dri-i965" "xorg-i965"

-elif test "x$enable_gallium_i965" = xauto; then

-    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS i965"

-fi

-

-dnl

-dnl Gallium Radeon r300g configuration

-dnl

-AC_ARG_ENABLE([gallium-radeon],

-    [AS_HELP_STRING([--enable-gallium-radeon],

-        [build gallium radeon @<:@default=disabled@:>@])],

-    [enable_gallium_radeon="$enableval"],

-    [enable_gallium_radeon=auto])

-if test "x$enable_gallium_radeon" = xauto; then

-    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS r300"

-    gallium_check_st "radeon/drm" "dri-r300"

-fi

-if test "x$enable_gallium_radeon" = xyes; then

-    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS r300"

-    gallium_check_st "radeon/drm" "dri-r300" "xorg-radeon"

-fi

-

-dnl

-dnl Gallium Radeon r600g configuration

-dnl

-AC_ARG_ENABLE([gallium-r600],

-    [AS_HELP_STRING([--enable-gallium-r600],

-        [build gallium radeon @<:@default=disabled@:>@])],

-    [enable_gallium_r600="$enableval"],

-    [enable_gallium_r600=auto])

-if test "x$enable_gallium_r600" = xyes; then

-    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS r600"

-    gallium_check_st "r600/drm" "dri-r600"

-fi

-

-dnl

-dnl Gallium Nouveau configuration

-dnl

-AC_ARG_ENABLE([gallium-nouveau],

-    [AS_HELP_STRING([--enable-gallium-nouveau],

-        [build gallium nouveau @<:@default=disabled@:>@])],

-    [enable_gallium_nouveau="$enableval"],

-    [enable_gallium_nouveau=no])

-if test "x$enable_gallium_nouveau" = xyes; then

-    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS nouveau nvfx nv50 nvc0"

-    gallium_check_st "nouveau/drm" "dri-nouveau" "xorg-nouveau"

-fi

-

-dnl

-dnl Gallium swrast configuration

-dnl

-AC_ARG_ENABLE([gallium-swrast],

-    [AS_HELP_STRING([--enable-gallium-swrast],

-        [build gallium swrast @<:@default=auto@:>@])],

-    [enable_gallium_swrast="$enableval"],

-    [enable_gallium_swrast=auto])

-if test "x$enable_gallium_swrast" = xyes || test "x$enable_gallium_swrast" = xauto; then

-    if test "x$HAVE_ST_DRI" = xyes; then

-        GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS dri-swrast"

-    fi

-fi

-

-dnl prepend CORE_DIRS to SRC_DIRS

-SRC_DIRS="$CORE_DIRS $SRC_DIRS"

-

-dnl Restore LDFLAGS and CPPFLAGS

-LDFLAGS="$_SAVE_LDFLAGS"

-CPPFLAGS="$_SAVE_CPPFLAGS"

-

-dnl Substitute the config

-AC_CONFIG_FILES([configs/autoconf])

-

-dnl Replace the configs/current symlink

-AC_CONFIG_COMMANDS([configs],[

-if test -f configs/current || test -L configs/current; then

-    rm -f configs/current

-fi

-ln -s autoconf configs/current

-])

-

-AC_OUTPUT

-

-dnl

-dnl Output some configuration info for the user

-dnl

-echo ""

-echo "        prefix:          $prefix"

-echo "        exec_prefix:     $exec_prefix"

-echo "        libdir:          $libdir"

-echo "        includedir:      $includedir"

-

-dnl API info

-echo ""

-echo "        OpenGL:          $enable_opengl (ES1: $enable_gles1 ES2: $enable_gles2)"

-echo "        OpenVG:          $enable_openvg"

-

-dnl Driver info

-echo ""

-echo "        Driver:          $mesa_driver"

-if test "$mesa_driver" != no; then

-    if echo "$DRIVER_DIRS" | grep 'osmesa' >/dev/null 2>&1; then

-        echo "        OSMesa:          lib$OSMESA_LIB"

-    else

-        echo "        OSMesa:          no"

-    fi

-    if test "$mesa_driver" = dri; then

-        # cleanup the drivers var

-        dri_dirs=`echo $DRI_DIRS | $SED 's/^ *//;s/  */ /;s/ *$//'`

-        if test "x$DRI_DIRS" = x; then

-            echo "        DRI drivers:     no"

-        else

-            echo "        DRI drivers:     $dri_dirs"

-        fi

-        echo "        DRI driver dir:  $DRI_DRIVER_INSTALL_DIR"

-        echo "        Use XCB:         $enable_xcb"

-        echo "        Shared dricore:  $enable_dricore"

-    fi

-fi

-echo ""

-echo "        GLU:             $enable_glu"

-echo "        GLw:             $enable_glw (Motif: $enable_motif)"

-echo "        glut:            $enable_glut"

-

-dnl EGL

-echo ""

-echo "        EGL:             $enable_egl"

-if test "$enable_egl" = yes; then

-    echo "        EGL platforms:   $EGL_PLATFORMS"

-

-    egl_drivers=""

-    for d in $EGL_DRIVERS_DIRS; do

-        egl_drivers="$egl_drivers builtin:egl_$d"

-    done

-

-    if test "$enable_gallium" = yes -a "$HAVE_ST_EGL" = yes; then

-        echo "        EGL drivers:    ${egl_drivers} egl_gallium"

-        echo "        EGL Gallium STs:$EGL_CLIENT_APIS"

-    else

-        echo "        EGL drivers:    $egl_drivers"

-    fi

-fi

-

-echo ""

-if test "x$MESA_LLVM" = x1; then

-    echo "        llvm:            yes"

-    echo "        llvm-config:     $LLVM_CONFIG"

-    echo "        llvm-version:    $LLVM_VERSION"

-else

-    echo "        llvm:            no"

-fi

-

-echo ""

-if echo "$SRC_DIRS" | grep 'gallium' >/dev/null 2>&1; then

-    echo "        Gallium:         yes"

-    echo "        Gallium dirs:    $GALLIUM_DIRS"

-    echo "        Target dirs:     $GALLIUM_TARGET_DIRS"

-    echo "        Winsys dirs:     $GALLIUM_WINSYS_DIRS"

-    echo "        Driver dirs:     $GALLIUM_DRIVERS_DIRS"

-    echo "        Trackers dirs:   $GALLIUM_STATE_TRACKERS_DIRS"

-else

-    echo "        Gallium:         no"

-fi

-

-dnl Libraries

-echo ""

-echo "        Shared libs:     $enable_shared"

-echo "        Static libs:     $enable_static"

-

-dnl Compiler options

-# cleanup the CFLAGS/CXXFLAGS/DEFINES vars

-cflags=`echo $CFLAGS $OPT_FLAGS $PIC_FLAGS $ARCH_FLAGS | \

-    $SED 's/^ *//;s/  */ /;s/ *$//'`

-cxxflags=`echo $CXXFLAGS $OPT_FLAGS $PIC_FLAGS $ARCH_FLAGS | \

-    $SED 's/^ *//;s/  */ /;s/ *$//'`

-defines=`echo $DEFINES $ASM_FLAGS | $SED 's/^ *//;s/  */ /;s/ *$//'`

-echo ""

-echo "        CFLAGS:          $cflags"

-echo "        CXXFLAGS:        $cxxflags"

-echo "        Macros:          $defines"

-echo ""

-echo "        PYTHON2:         $PYTHON2"

-

-echo ""

-echo "        Run '${MAKE-make}' to build Mesa"

-echo ""

+dnl Process this file with autoconf to create configure.
+
+AC_PREREQ([2.59])
+
+dnl Versioning - scrape the version from configs/default
+m4_define([mesa_version],
+    [m4_esyscmd([${MAKE-make} -s -f bin/version.mk version | tr -d '\n' | tr -d '\r'])])
+m4_ifval(mesa_version,,
+    [m4_fatal([Failed to get the Mesa version from `make -f bin/version.mk version`])])
+
+dnl Tell the user about autoconf.html in the --help output
+m4_divert_once([HELP_END], [
+See docs/autoconf.html for more details on the options for Mesa.])
+
+AC_INIT([Mesa],[mesa_version],
+    [https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa])
+AC_CONFIG_AUX_DIR([bin])
+AC_CANONICAL_HOST
+
+dnl Versions for external dependencies
+LIBDRM_REQUIRED=2.4.24
+LIBDRM_RADEON_REQUIRED=2.4.24
+LIBDRM_INTEL_REQUIRED=2.4.24
+DRI2PROTO_REQUIRED=2.1
+GLPROTO_REQUIRED=1.4.11
+LIBDRM_XORG_REQUIRED=2.4.24
+LIBKMS_XORG_REQUIRED=1.0.0
+
+dnl Check for progs
+AC_PROG_CPP
+AC_PROG_CC
+AC_PROG_CXX
+AC_CHECK_PROGS([MAKE], [gmake make])
+AC_CHECK_PROGS([PYTHON2], [python2 python])
+AC_PATH_PROG([MKDEP], [makedepend])
+AC_PATH_PROG([SED], [sed])
+
+if test "x$MKDEP" = "x"; then
+    AC_MSG_ERROR([makedepend is required to build Mesa])
+fi
+
+dnl Our fallback install-sh is a symlink to minstall. Use the existing
+dnl configuration in that case.
+AC_PROG_INSTALL
+test "x$INSTALL" = "x$ac_install_sh" && INSTALL='$(MINSTALL)'
+
+dnl We need a POSIX shell for parts of the build. Assume we have one
+dnl in most cases.
+case "$host_os" in
+solaris*)
+    # Solaris /bin/sh is too old/non-POSIX compliant
+    AC_PATH_PROGS(POSIX_SHELL, [ksh93 ksh sh])
+    SHELL="$POSIX_SHELL"
+    ;;
+esac
+
+dnl clang is mostly GCC-compatible, but its version is much lower,
+dnl so we have to check for it.
+AC_MSG_CHECKING([if compiling with clang])
+
+AC_COMPILE_IFELSE(
+[AC_LANG_PROGRAM([], [[
+#ifndef __clang__
+       not clang
+#endif
+]])],
+[CLANG=yes], [CLANG=no])
+
+AC_MSG_RESULT([$CLANG])
+
+dnl If we're using GCC, make sure that it is at least version 3.3.0.  Older
+dnl versions are explictly not supported.
+if test "x$GCC" = xyes -a "x$CLANG" = xno; then
+    AC_MSG_CHECKING([whether gcc version is sufficient])
+    major=0
+    minor=0
+
+    GCC_VERSION=`$CC -dumpversion`
+    if test $? -eq 0; then
+        major=`echo $GCC_VERSION | cut -d. -f1`
+        minor=`echo $GCC_VERSION | cut -d. -f1`
+    fi
+
+    if test $major -lt 3 -o $major -eq 3 -a $minor -lt 3 ; then
+        AC_MSG_RESULT([no])
+        AC_MSG_ERROR([If using GCC, version 3.3.0 or later is required.])
+    else
+        AC_MSG_RESULT([yes])
+    fi
+fi
+
+
+MKDEP_OPTIONS=-fdepend
+dnl Ask gcc where it's keeping its secret headers
+if test "x$GCC" = xyes; then
+    for dir in include include-fixed; do
+        GCC_INCLUDES=`$CC -print-file-name=$dir`
+        if test "x$GCC_INCLUDES" != x && \
+           test "$GCC_INCLUDES" != "$dir" && \
+           test -d "$GCC_INCLUDES"; then
+            MKDEP_OPTIONS="$MKDEP_OPTIONS -I$GCC_INCLUDES"
+        fi
+    done
+fi
+AC_SUBST([MKDEP_OPTIONS])
+
+dnl Make sure the pkg-config macros are defined
+m4_ifndef([PKG_PROG_PKG_CONFIG],
+    [m4_fatal([Could not locate the pkg-config autoconf macros.
+  These are usually located in /usr/share/aclocal/pkg.m4. If your macros
+  are in a different location, try setting the environment variable
+  ACLOCAL="aclocal -I/other/macro/dir" before running autoreconf.])])
+PKG_PROG_PKG_CONFIG()
+
+dnl LIB_DIR - library basename
+LIB_DIR=`echo $libdir | $SED 's%.*/%%'`
+AC_SUBST([LIB_DIR])
+
+dnl Cache LDFLAGS so we can add EXTRA_LIB_PATH and restore it later
+_SAVE_LDFLAGS="$LDFLAGS"
+AC_ARG_VAR([EXTRA_LIB_PATH],[Extra -L paths for the linker])
+AC_SUBST([EXTRA_LIB_PATH])
+
+dnl Cache CPPFLAGS so we can add *_INCLUDES and restore it later
+_SAVE_CPPFLAGS="$CPPFLAGS"
+AC_ARG_VAR([X11_INCLUDES],[Extra -I paths for X11 headers])
+AC_SUBST([X11_INCLUDES])
+
+dnl Compiler macros
+DEFINES=""
+AC_SUBST([DEFINES])
+case "$host_os" in
+linux*|*-gnu*|gnu*)
+    DEFINES="$DEFINES -D_GNU_SOURCE -DPTHREADS"
+    ;;
+solaris*)
+    DEFINES="$DEFINES -DPTHREADS -DSVR4"
+    ;;
+cygwin*)
+    DEFINES="$DEFINES -DPTHREADS"
+    ;;
+esac
+
+dnl Add flags for gcc and g++
+if test "x$GCC" = xyes; then
+    CFLAGS="$CFLAGS -Wall -Wmissing-prototypes -std=c99"
+    if test "x$CLANG" = "xno"; then
+       CFLAGS="$CFLAGS -ffast-math"
+    fi
+
+    # Enable -fvisibility=hidden if using a gcc that supports it
+    save_CFLAGS="$CFLAGS"
+    AC_MSG_CHECKING([whether $CC supports -fvisibility=hidden])
+    VISIBILITY_CFLAGS="-fvisibility=hidden"
+    CFLAGS="$CFLAGS $VISIBILITY_CFLAGS"
+    AC_LINK_IFELSE([AC_LANG_PROGRAM()], AC_MSG_RESULT([yes]),
+		   [VISIBILITY_CFLAGS=""; AC_MSG_RESULT([no])]);
+
+    # Restore CFLAGS; VISIBILITY_CFLAGS are added to it where needed.
+    CFLAGS=$save_CFLAGS
+
+    # Work around aliasing bugs - developers should comment this out
+    CFLAGS="$CFLAGS -fno-strict-aliasing"
+fi
+if test "x$GXX" = xyes; then
+    CXXFLAGS="$CXXFLAGS -Wall"
+
+    # Enable -fvisibility=hidden if using a gcc that supports it
+    save_CXXFLAGS="$CXXFLAGS"
+    AC_MSG_CHECKING([whether $CXX supports -fvisibility=hidden])
+    VISIBILITY_CXXFLAGS="-fvisibility=hidden"
+    CXXFLAGS="$CXXFLAGS $VISIBILITY_CXXFLAGS"
+    AC_LINK_IFELSE([AC_LANG_PROGRAM()], AC_MSG_RESULT([yes]),
+		   [VISIBILITY_CXXFLAGS="" ; AC_MSG_RESULT([no])]);
+
+    # Restore CXXFLAGS; VISIBILITY_CXXFLAGS are added to it where needed.
+    CXXFLAGS=$save_CXXFLAGS
+
+    # Work around aliasing bugs - developers should comment this out
+    CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
+fi
+
+AC_SUBST([VISIBILITY_CFLAGS])
+AC_SUBST([VISIBILITY_CXXFLAGS])
+
+dnl These should be unnecessary, but let the user set them if they want
+AC_ARG_VAR([OPT_FLAGS], [Additional optimization flags for the compiler.
+    Default is to use CFLAGS.])
+AC_ARG_VAR([ARCH_FLAGS], [Additional architecture specific flags for the
+    compiler. Default is to use CFLAGS.])
+AC_SUBST([OPT_FLAGS])
+AC_SUBST([ARCH_FLAGS])
+
+dnl
+dnl Hacks to enable 32 or 64 bit build
+dnl
+AC_ARG_ENABLE([32-bit],
+    [AS_HELP_STRING([--enable-32-bit],
+        [build 32-bit libraries @<:@default=auto@:>@])],
+    [enable_32bit="$enableval"],
+    [enable_32bit=auto]
+)
+if test "x$enable_32bit" = xyes; then
+    if test "x$GCC" = xyes; then
+        CFLAGS="$CFLAGS -m32"
+        ARCH_FLAGS="$ARCH_FLAGS -m32"
+    fi
+    if test "x$GXX" = xyes; then
+        CXXFLAGS="$CXXFLAGS -m32"
+    fi
+fi
+AC_ARG_ENABLE([64-bit],
+    [AS_HELP_STRING([--enable-64-bit],
+        [build 64-bit libraries @<:@default=auto@:>@])],
+    [enable_64bit="$enableval"],
+    [enable_64bit=auto]
+)
+if test "x$enable_64bit" = xyes; then
+    if test "x$GCC" = xyes; then
+        CFLAGS="$CFLAGS -m64"
+    fi
+    if test "x$GXX" = xyes; then
+        CXXFLAGS="$CXXFLAGS -m64"
+    fi
+fi
+
+dnl
+dnl shared/static libraries, mimic libtool options
+dnl
+AC_ARG_ENABLE([static],
+    [AS_HELP_STRING([--enable-static],
+        [build static libraries @<:@default=disabled@:>@])],
+    [enable_static="$enableval"],
+    [enable_static=no]
+)
+case "x$enable_static" in
+xyes|xno ) ;;
+x ) enable_static=no ;;
+* )
+    AC_MSG_ERROR([Static library option '$enable_static' is not a valid])
+    ;;
+esac
+AC_ARG_ENABLE([shared],
+    [AS_HELP_STRING([--disable-shared],
+        [build shared libraries @<:@default=enabled@:>@])],
+    [enable_shared="$enableval"],
+    [enable_shared=yes]
+)
+case "x$enable_shared" in
+xyes|xno ) ;;
+x ) enable_shared=yes ;;
+* )
+    AC_MSG_ERROR([Shared library option '$enable_shared' is not a valid])
+    ;;
+esac
+
+dnl Can't have static and shared libraries, default to static if user
+dnl explicitly requested. If both disabled, set to static since shared
+dnl was explicitly requirested.
+case "x$enable_static$enable_shared" in
+xyesyes )
+    AC_MSG_WARN([Can't build static and shared libraries, disabling shared])
+    enable_shared=no
+    ;;
+xnono )
+    AC_MSG_WARN([Can't disable both static and shared libraries, enabling static])
+    enable_static=yes
+    ;;
+esac
+
+dnl
+dnl mklib options
+dnl
+AC_ARG_VAR([MKLIB_OPTIONS],[Options for the Mesa library script, mklib])
+if test "$enable_static" = yes; then
+    MKLIB_OPTIONS="$MKLIB_OPTIONS -static"
+fi
+AC_SUBST([MKLIB_OPTIONS])
+
+dnl
+dnl other compiler options
+dnl
+AC_ARG_ENABLE([debug],
+    [AS_HELP_STRING([--enable-debug],
+        [use debug compiler flags and macros @<:@default=disabled@:>@])],
+    [enable_debug="$enableval"],
+    [enable_debug=no]
+)
+if test "x$enable_debug" = xyes; then
+    DEFINES="$DEFINES -DDEBUG"
+    if test "x$GCC" = xyes; then
+        CFLAGS="$CFLAGS -g"
+    fi
+    if test "x$GXX" = xyes; then
+        CXXFLAGS="$CXXFLAGS -g"
+    fi
+fi
+
+dnl
+dnl library names
+dnl
+LIB_PREFIX_GLOB='lib'
+LIB_VERSION_SEPARATOR='.'
+if test "$enable_static" = yes; then
+    LIB_EXTENSION='a'
+else
+    case "$host_os" in
+    darwin* )
+        LIB_EXTENSION='dylib' ;;
+    cygwin* )
+        dnl prefix can be 'cyg' or 'lib'
+        LIB_PREFIX_GLOB='???'
+        LIB_VERSION_SEPARATOR='-'
+        LIB_EXTENSION='dll' ;;
+    aix* )
+        LIB_EXTENSION='a' ;;
+    * )
+        LIB_EXTENSION='so' ;;
+    esac
+fi
+
+dnl
+dnl potentially-infringing-but-nobody-knows-for-sure stuff
+dnl
+AC_ARG_ENABLE([texture-float],
+    [AS_HELP_STRING([--enable-texture-float],
+        [enable floating-point textures and renderbuffers @<:@default=disabled@:>@])],
+    [enable_texture_float="$enableval"],
+    [enable_texture_float=no]
+)
+if test "x$enable_texture_float" = xyes; then
+    AC_MSG_WARN([Floating-point textures enabled.])
+    AC_MSG_WARN([Please consult docs/patents.txt with your lawyer before building Mesa.])
+    DEFINES="$DEFINES -DTEXTURE_FLOAT_ENABLED"
+fi
+
+GL_LIB_NAME='lib$(GL_LIB).'${LIB_EXTENSION}
+GLU_LIB_NAME='lib$(GLU_LIB).'${LIB_EXTENSION}
+GLUT_LIB_NAME='lib$(GLUT_LIB).'${LIB_EXTENSION}
+GLW_LIB_NAME='lib$(GLW_LIB).'${LIB_EXTENSION}
+OSMESA_LIB_NAME='lib$(OSMESA_LIB).'${LIB_EXTENSION}
+EGL_LIB_NAME='lib$(EGL_LIB).'${LIB_EXTENSION}
+GLESv1_CM_LIB_NAME='lib$(GLESv1_CM_LIB).'${LIB_EXTENSION}
+GLESv2_LIB_NAME='lib$(GLESv2_LIB).'${LIB_EXTENSION}
+VG_LIB_NAME='lib$(VG_LIB).'${LIB_EXTENSION}
+GLAPI_LIB_NAME='lib$(GLAPI_LIB).'${LIB_EXTENSION}
+WAYLAND_EGL_LIB_NAME='lib$(WAYLAND_EGL_LIB).'${LIB_EXTENSION}
+
+GL_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GL_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
+GLU_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLU_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
+GLUT_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLUT_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
+GLW_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLW_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
+OSMESA_LIB_GLOB=${LIB_PREFIX_GLOB}'$(OSMESA_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
+EGL_LIB_GLOB=${LIB_PREFIX_GLOB}'$(EGL_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
+EGL_LIB_GLOB=${LIB_PREFIX_GLOB}'$(EGL_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
+GLESv1_CM_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLESv1_CM_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
+GLESv2_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLESv2_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
+VG_LIB_GLOB=${LIB_PREFIX_GLOB}'$(VG_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
+GLAPI_LIB_GLOB=${LIB_PREFIX_GLOB}'$(GLAPI_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
+WAYLAND_EGL_LIB_GLOB=${LIB_PREFIX_GLOB}'$(WAYLAND_EGL_LIB)'${LIB_VERSION_SEPARATOR}'*'${LIB_EXTENSION}'*'
+
+AC_SUBST([GL_LIB_NAME])
+AC_SUBST([GLU_LIB_NAME])
+AC_SUBST([GLUT_LIB_NAME])
+AC_SUBST([GLW_LIB_NAME])
+AC_SUBST([OSMESA_LIB_NAME])
+AC_SUBST([EGL_LIB_NAME])
+AC_SUBST([GLESv1_CM_LIB_NAME])
+AC_SUBST([GLESv2_LIB_NAME])
+AC_SUBST([VG_LIB_NAME])
+AC_SUBST([GLAPI_LIB_NAME])
+AC_SUBST([WAYLAND_EGL_LIB_NAME])
+
+AC_SUBST([GL_LIB_GLOB])
+AC_SUBST([GLU_LIB_GLOB])
+AC_SUBST([GLUT_LIB_GLOB])
+AC_SUBST([GLW_LIB_GLOB])
+AC_SUBST([OSMESA_LIB_GLOB])
+AC_SUBST([EGL_LIB_GLOB])
+AC_SUBST([GLESv1_CM_LIB_GLOB])
+AC_SUBST([GLESv2_LIB_GLOB])
+AC_SUBST([VG_LIB_GLOB])
+AC_SUBST([GLAPI_LIB_GLOB])
+AC_SUBST([WAYLAND_EGL_LIB_GLOB])
+
+dnl
+dnl Arch/platform-specific settings
+dnl
+AC_ARG_ENABLE([asm],
+    [AS_HELP_STRING([--disable-asm],
+        [disable assembly usage @<:@default=enabled on supported plaforms@:>@])],
+    [enable_asm="$enableval"],
+    [enable_asm=yes]
+)
+asm_arch=""
+ASM_FLAGS=""
+MESA_ASM_SOURCES=""
+GLAPI_ASM_SOURCES=""
+AC_MSG_CHECKING([whether to enable assembly])
+test "x$enable_asm" = xno && AC_MSG_RESULT([no])
+# disable if cross compiling on x86/x86_64 since we must run gen_matypes
+if test "x$enable_asm" = xyes && test "x$cross_compiling" = xyes; then
+    case "$host_cpu" in
+    i?86 | x86_64)
+        enable_asm=no
+        AC_MSG_RESULT([no, cross compiling])
+        ;;
+    esac
+fi
+# check for supported arches
+if test "x$enable_asm" = xyes; then
+    case "$host_cpu" in
+    i?86)
+        case "$host_os" in
+        linux* | *freebsd* | dragonfly* | *netbsd*)
+            test "x$enable_64bit" = xyes && asm_arch=x86_64 || asm_arch=x86
+            ;;
+        esac
+        ;;
+    x86_64)
+        case "$host_os" in
+        linux* | *freebsd* | dragonfly* | *netbsd*)
+            test "x$enable_32bit" = xyes && asm_arch=x86 || asm_arch=x86_64
+            ;;
+        esac
+        ;;
+    powerpc)
+        case "$host_os" in
+        linux*)
+            asm_arch=ppc
+            ;;
+        esac
+        ;;
+    sparc*)
+        case "$host_os" in
+        linux*)
+            asm_arch=sparc
+            ;;
+        esac
+        ;;
+    esac
+
+    case "$asm_arch" in
+    x86)
+        ASM_FLAGS="-DUSE_X86_ASM -DUSE_MMX_ASM -DUSE_3DNOW_ASM -DUSE_SSE_ASM"
+        MESA_ASM_SOURCES='$(X86_SOURCES)'
+        GLAPI_ASM_SOURCES='$(X86_API)'
+        AC_MSG_RESULT([yes, x86])
+        ;;
+    x86_64)
+        ASM_FLAGS="-DUSE_X86_64_ASM"
+        MESA_ASM_SOURCES='$(X86-64_SOURCES)'
+        GLAPI_ASM_SOURCES='$(X86-64_API)'
+        AC_MSG_RESULT([yes, x86_64])
+        ;;
+    ppc)
+        ASM_FLAGS="-DUSE_PPC_ASM -DUSE_VMX_ASM"
+        MESA_ASM_SOURCES='$(PPC_SOURCES)'
+        AC_MSG_RESULT([yes, ppc])
+        ;;
+    sparc)
+        ASM_FLAGS="-DUSE_SPARC_ASM"
+        MESA_ASM_SOURCES='$(SPARC_SOURCES)'
+        GLAPI_ASM_SOURCES='$(SPARC_API)'
+        AC_MSG_RESULT([yes, sparc])
+        ;;
+    *)
+        AC_MSG_RESULT([no, platform not supported])
+        ;;
+    esac
+fi
+AC_SUBST([ASM_FLAGS])
+AC_SUBST([MESA_ASM_SOURCES])
+AC_SUBST([GLAPI_ASM_SOURCES])
+
+dnl PIC code macro
+MESA_PIC_FLAGS
+
+dnl Check to see if dlopen is in default libraries (like Solaris, which
+dnl has it in libc), or if libdl is needed to get it.
+AC_CHECK_FUNC([dlopen], [],
+    [AC_CHECK_LIB([dl], [dlopen], [DLOPEN_LIBS="-ldl"])])
+AC_SUBST([DLOPEN_LIBS])
+
+dnl See if posix_memalign is available
+AC_CHECK_FUNC([posix_memalign], [DEFINES="$DEFINES -DHAVE_POSIX_MEMALIGN"])
+
+dnl SELinux awareness.
+AC_ARG_ENABLE([selinux],
+    [AS_HELP_STRING([--enable-selinux],
+        [Build SELinux-aware Mesa @<:@default=disabled@:>@])],
+    [MESA_SELINUX="$enableval"],
+    [MESA_SELINUX=no])
+if test "x$enable_selinux" = "xyes"; then
+    AC_CHECK_HEADER([selinux/selinux.h],[],
+                    [AC_MSG_ERROR([SELinux headers not found])])
+    AC_CHECK_LIB([selinux],[is_selinux_enabled],[],
+                 [AC_MSG_ERROR([SELinux library not found])])
+    SELINUX_LIBS="-lselinux"
+    DEFINES="$DEFINES -DMESA_SELINUX"
+fi
+
+dnl Determine which APIs to support
+AC_ARG_ENABLE([opengl],
+    [AS_HELP_STRING([--disable-opengl],
+        [disable support for standard OpenGL API @<:@default=no@:>@])],
+    [enable_opengl="$enableval"],
+    [enable_opengl=yes])
+AC_ARG_ENABLE([gles1],
+    [AS_HELP_STRING([--enable-gles1],
+        [enable support for OpenGL ES 1.x API @<:@default=no@:>@])],
+    [enable_gles1="$enableval"],
+    [enable_gles1=no])
+AC_ARG_ENABLE([gles2],
+    [AS_HELP_STRING([--enable-gles2],
+        [enable support for OpenGL ES 2.x API @<:@default=no@:>@])],
+    [enable_gles2="$enableval"],
+    [enable_gles2=no])
+AC_ARG_ENABLE([gles-overlay],
+    [AS_HELP_STRING([--enable-gles-overlay],
+        [DEPRECATED.  Same as --enable-gles1 and --enable-gles2])],
+    [enable_gles1="$enableval"; enable_gles2="$enableval"],
+    [])
+
+AC_ARG_ENABLE([openvg],
+    [AS_HELP_STRING([--enable-openvg],
+        [enable support for OpenVG API @<:@default=no@:>@])],
+    [enable_openvg="$enableval"],
+    [enable_openvg=no])
+
+dnl smooth the transition; should be removed eventually
+if test "x$enable_openvg" = xno; then
+    case "x$with_state_trackers" in
+    x*vega*)
+        AC_MSG_WARN([vega state tracker is enabled without --enable-openvg])
+        enable_openvg=yes
+        ;;
+    esac
+fi
+
+if test "x$enable_opengl" = xno -a \
+        "x$enable_gles1" = xno -a \
+        "x$enable_gles2" = xno -a \
+        "x$enable_openvg" = xno; then
+    AC_MSG_ERROR([at least one API should be enabled])
+fi
+
+API_DEFINES=""
+if test "x$enable_opengl" = xno; then
+    API_DEFINES="$API_DEFINES -DFEATURE_GL=0"
+else
+    API_DEFINES="$API_DEFINES -DFEATURE_GL=1"
+fi
+if test "x$enable_gles1" = xyes; then
+    API_DEFINES="$API_DEFINES -DFEATURE_ES1=1"
+fi
+if test "x$enable_gles2" = xyes; then
+    API_DEFINES="$API_DEFINES -DFEATURE_ES2=1"
+fi
+AC_SUBST([API_DEFINES])
+
+AC_ARG_ENABLE([shared-glapi],
+    [AS_HELP_STRING([--enable-shared-glapi],
+        [EXPERIMENTAL.  Enable shared glapi for OpenGL @<:@default=no@:>@])],
+    [enable_shared_glapi="$enableval"],
+    [enable_shared_glapi=no])
+
+SHARED_GLAPI="0"
+if test "x$enable_shared_glapi" = xyes; then
+    SHARED_GLAPI="1"
+fi
+AC_SUBST([SHARED_GLAPI])
+
+dnl
+dnl Driver configuration. Options are xlib, dri and osmesa right now.
+dnl More later: fbdev, ...
+dnl
+default_driver="xlib"
+
+case "$host_os" in
+linux*)
+    case "$host_cpu" in
+    i*86|x86_64|powerpc*|sparc*) default_driver="dri";;
+    esac
+    ;;
+*freebsd* | dragonfly* | *netbsd*)
+    case "$host_cpu" in
+    i*86|x86_64|powerpc*|sparc*) default_driver="dri";;
+    esac
+    ;;
+esac
+
+if test "x$enable_opengl" = xno; then
+    default_driver="no"
+fi
+
+AC_ARG_WITH([driver],
+    [AS_HELP_STRING([--with-driver=DRIVER],
+        [driver for Mesa: xlib,dri,osmesa @<:@default=dri when available, or xlib@:>@])],
+    [mesa_driver="$withval"],
+    [mesa_driver="$default_driver"])
+dnl Check for valid option
+case "x$mesa_driver" in
+xxlib|xdri|xosmesa)
+    if test "x$enable_opengl" = xno; then
+        AC_MSG_ERROR([Driver '$mesa_driver' requires OpenGL enabled])
+    fi
+    ;;
+xno)
+    ;;
+*)
+    AC_MSG_ERROR([Driver '$mesa_driver' is not a valid option])
+    ;;
+esac
+
+dnl
+dnl Driver specific build directories
+dnl
+
+dnl this variable will be prepended to SRC_DIRS and is not exported
+CORE_DIRS=""
+
+SRC_DIRS=""
+GLU_DIRS="sgi"
+GALLIUM_DIRS="auxiliary drivers state_trackers"
+GALLIUM_TARGET_DIRS=""
+GALLIUM_WINSYS_DIRS="sw"
+GALLIUM_DRIVERS_DIRS="softpipe failover galahad trace rbug noop identity"
+GALLIUM_STATE_TRACKERS_DIRS=""
+
+# build shared-glapi if enabled for OpenGL or if OpenGL ES is enabled
+case "x$enable_shared_glapi$enable_gles1$enable_gles2" in
+x*yes*)
+    CORE_DIRS="$CORE_DIRS mapi/shared-glapi"
+    ;;
+esac
+
+# build glapi if OpenGL is enabled
+if test "x$enable_opengl" = xyes; then
+    CORE_DIRS="$CORE_DIRS mapi/glapi"
+fi
+
+# build es1api if OpenGL ES 1.x is enabled
+if test "x$enable_gles1" = xyes; then
+    CORE_DIRS="$CORE_DIRS mapi/es1api"
+fi
+
+# build es2api if OpenGL ES 2.x is enabled
+if test "x$enable_gles2" = xyes; then
+    CORE_DIRS="$CORE_DIRS mapi/es2api"
+fi
+
+# build vgapi if OpenVG is enabled
+if test "x$enable_openvg" = xyes; then
+    CORE_DIRS="$CORE_DIRS mapi/vgapi"
+fi
+
+# build glsl and mesa if OpenGL or OpenGL ES is enabled
+case "x$enable_opengl$enable_gles1$enable_gles2" in
+x*yes*)
+    CORE_DIRS="$CORE_DIRS glsl mesa"
+    ;;
+esac
+
+case "$mesa_driver" in
+xlib)
+    DRIVER_DIRS="x11"
+    GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/xlib"
+    GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS libgl-xlib"
+    ;;
+dri)
+    SRC_DIRS="$SRC_DIRS glx"
+    DRIVER_DIRS="dri"
+    GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/xlib sw/dri"
+    ;;
+osmesa)
+    DRIVER_DIRS="osmesa"
+    ;;
+no)
+    DRIVER_DRIS=""
+    ;;
+esac
+AC_SUBST([SRC_DIRS])
+AC_SUBST([GLU_DIRS])
+AC_SUBST([DRIVER_DIRS])
+AC_SUBST([GALLIUM_DIRS])
+AC_SUBST([GALLIUM_TARGET_DIRS])
+AC_SUBST([GALLIUM_WINSYS_DIRS])
+AC_SUBST([GALLIUM_DRIVERS_DIRS])
+AC_SUBST([GALLIUM_STATE_TRACKERS_DIRS])
+AC_SUBST([MESA_LLVM])
+
+dnl
+dnl Find out if X is available. The variable have_x is set if libX11 is
+dnl found to mimic AC_PATH_XTRA.
+dnl
+if test -n "$PKG_CONFIG"; then
+    AC_MSG_CHECKING([pkg-config files for X11 are available])
+    PKG_CHECK_EXISTS([x11],[
+        x11_pkgconfig=yes
+        have_x=yes
+        ],[
+        x11_pkgconfig=no
+    ])
+    AC_MSG_RESULT([$x11_pkgconfig])
+else
+    x11_pkgconfig=no
+fi
+dnl Use the autoconf macro if no pkg-config files
+if test "$x11_pkgconfig" = yes; then
+    PKG_CHECK_MODULES([X11], [x11])
+else
+    AC_PATH_XTRA
+    test -z "$X11_CFLAGS" && X11_CFLAGS="$X_CFLAGS"
+    test -z "$X11_LIBS" && X11_LIBS="$X_LIBS -lX11"
+    AC_SUBST([X11_CFLAGS])
+    AC_SUBST([X11_LIBS])
+fi
+
+dnl Try to tell the user that the --x-* options are only used when
+dnl pkg-config is not available. This must be right after AC_PATH_XTRA.
+m4_divert_once([HELP_BEGIN],
+[These options are only used when the X libraries cannot be found by the
+pkg-config utility.])
+
+dnl We need X for xlib and dri, so bomb now if it's not found
+case "$mesa_driver" in
+xlib|dri)
+    if test "$no_x" = yes; then
+        AC_MSG_ERROR([X11 development libraries needed for $mesa_driver driver])
+    fi
+    ;;
+esac
+
+dnl XCB - this is only used for GLX right now
+AC_ARG_ENABLE([xcb],
+    [AS_HELP_STRING([--enable-xcb],
+        [use XCB for GLX @<:@default=disabled@:>@])],
+    [enable_xcb="$enableval"],
+    [enable_xcb=no])
+if test "x$enable_xcb" = xyes; then
+    DEFINES="$DEFINES -DUSE_XCB"
+else
+    enable_xcb=no
+fi
+
+dnl Direct rendering or just indirect rendering
+case "$host_os" in
+gnu*)
+    dnl Disable by default on GNU/Hurd
+    driglx_direct_default="no"
+    ;;
+cygwin*)
+    dnl Disable by default on cygwin
+    driglx_direct_default="no"
+    ;;
+*)
+    driglx_direct_default="yes"
+    ;;
+esac
+AC_ARG_ENABLE([driglx-direct],
+    [AS_HELP_STRING([--disable-driglx-direct],
+        [enable direct rendering in GLX and EGL for DRI \
+            @<:@default=auto@:>@])],
+    [driglx_direct="$enableval"],
+    [driglx_direct="$driglx_direct_default"])
+
+dnl
+dnl libGL configuration per driver
+dnl
+case "$mesa_driver" in
+xlib)
+    if test "$x11_pkgconfig" = yes; then
+        PKG_CHECK_MODULES([XLIBGL], [x11 xext])
+        GL_PC_REQ_PRIV="x11 xext"
+        X11_INCLUDES="$X11_INCLUDES $XLIBGL_CFLAGS"
+        GL_LIB_DEPS="$XLIBGL_LIBS"
+    else
+        # should check these...
+        X11_INCLUDES="$X11_INCLUDES $X_CFLAGS"
+        GL_LIB_DEPS="$X_LIBS -lX11 -lXext"
+        GL_PC_LIB_PRIV="$GL_LIB_DEPS"
+        GL_PC_CFLAGS="$X11_INCLUDES"
+    fi
+    GL_LIB_DEPS="$GL_LIB_DEPS $SELINUX_LIBS -lm -lpthread"
+    GL_PC_LIB_PRIV="$GL_PC_LIB_PRIV $SELINUX_LIBS -lm -lpthread"
+
+    # if static, move the external libraries to the programs
+    # and empty the libraries for libGL
+    if test "$enable_static" = yes; then
+        APP_LIB_DEPS="$APP_LIB_DEPS $GL_LIB_DEPS"
+        GL_LIB_DEPS=""
+    fi
+    ;;
+dri|no) # these checks are still desired when there is no mesa_driver
+    # DRI must be shared, I think
+    if test "$enable_static" = yes; then
+        AC_MSG_ERROR([Can't use static libraries for DRI drivers])
+    fi
+
+    PKG_CHECK_MODULES([GLPROTO], [glproto >= $GLPROTO_REQUIRED])
+    GL_PC_REQ_PRIV="glproto >= $GLPROTO_REQUIRED"
+    DRI_PC_REQ_PRIV=""
+
+    if test x"$driglx_direct" = xyes; then
+        # Check for libdrm
+        PKG_CHECK_MODULES([LIBDRM], [libdrm >= $LIBDRM_REQUIRED])
+        PKG_CHECK_MODULES([DRI2PROTO], [dri2proto >= $DRI2PROTO_REQUIRED])
+        GL_PC_REQ_PRIV="$GL_PC_REQ_PRIV libdrm >= $LIBDRM_REQUIRED dri2proto >= $DRI2PROTO_REQUIRED"
+        DRI_PC_REQ_PRIV="libdrm >= $LIBDRM_REQUIRED"
+    fi
+
+    # find the DRI deps for libGL
+    if test "$x11_pkgconfig" = yes; then
+        dri_modules="x11 xext xdamage xfixes"
+
+        # add xf86vidmode if available
+        PKG_CHECK_MODULES([XF86VIDMODE], [xxf86vm], HAVE_XF86VIDMODE=yes, HAVE_XF86VIDMODE=no)
+        if test "$HAVE_XF86VIDMODE" = yes ; then
+            dri_modules="$dri_modules xxf86vm"
+        fi
+
+        # add xcb modules if necessary
+        if test "$enable_xcb" = yes; then
+            dri_modules="$dri_modules x11-xcb xcb-glx"
+        fi
+
+        PKG_CHECK_MODULES([DRIGL], [$dri_modules])
+        GL_PC_REQ_PRIV="$GL_PC_REQ_PRIV $dri_modules"
+        X11_INCLUDES="$X11_INCLUDES $DRIGL_CFLAGS"
+        GL_LIB_DEPS="$DRIGL_LIBS"
+    else
+        # should check these...
+        X11_INCLUDES="$X11_INCLUDES $X_CFLAGS"
+        GL_LIB_DEPS="$X_LIBS -lX11 -lXext -lXxf86vm -lXdamage -lXfixes"
+        GL_PC_LIB_PRIV="$GL_LIB_DEPS"
+        GL_PC_CFLAGS="$X11_INCLUDES"
+
+        # XCB can only be used from pkg-config
+        if test "$enable_xcb" = yes; then
+            PKG_CHECK_MODULES([XCB],[x11-xcb xcb-glx])
+            GL_PC_REQ_PRIV="$GL_PC_REQ_PRIV x11-xcb xcb-glx"
+            X11_INCLUDES="$X11_INCLUDES $XCB_CFLAGS"
+            GL_LIB_DEPS="$GL_LIB_DEPS $XCB_LIBS"
+        fi
+    fi
+
+    # need DRM libs, -lpthread, etc.
+    GL_LIB_DEPS="$GL_LIB_DEPS $LIBDRM_LIBS -lm -lpthread $DLOPEN_LIBS"
+    GL_PC_LIB_PRIV="-lm -lpthread $DLOPEN_LIBS"
+    GLESv1_CM_LIB_DEPS="$LIBDRM_LIBS -lm -lpthread $DLOPEN_LIBS"
+    GLESv1_CM_PC_LIB_PRIV="-lm -lpthread $DLOPEN_LIBS"
+    GLESv2_LIB_DEPS="$LIBDRM_LIBS -lm -lpthread $DLOPEN_LIBS"
+    GLESv2_PC_LIB_PRIV="-lm -lpthread $DLOPEN_LIBS"
+    ;;
+osmesa)
+    # No libGL for osmesa
+    GL_LIB_DEPS=""
+    ;;
+esac
+AC_SUBST([GL_LIB_DEPS])
+AC_SUBST([GL_PC_REQ_PRIV])
+AC_SUBST([GL_PC_LIB_PRIV])
+AC_SUBST([GL_PC_CFLAGS])
+AC_SUBST([DRI_PC_REQ_PRIV])
+AC_SUBST([GLESv1_CM_LIB_DEPS])
+AC_SUBST([GLESv1_CM_PC_LIB_PRIV])
+AC_SUBST([GLESv2_LIB_DEPS])
+AC_SUBST([GLESv2_PC_LIB_PRIV])
+
+GLAPI_LIB_DEPS="-lpthread"
+AC_SUBST([GLAPI_LIB_DEPS])
+
+
+dnl Setup default DRI CFLAGS
+DRI_CFLAGS='$(CFLAGS)'
+DRI_CXXFLAGS='$(CXXFLAGS)'
+DRI_LIB_DEPS='$(TOP)/src/mesa/libmesa.a'
+MESA_MODULES='$(TOP)/src/mesa/libmesa.a'
+
+AC_ARG_ENABLE([shared-dricore],
+    [AS_HELP_STRING([--enable-shared-dricore],
+        [link DRI modules with shared core DRI routines @<:@default=disabled@:>@])],
+    [enable_dricore="$enableval"],
+    [enable_dricore=no])
+if test "$mesa_driver" = dri ; then
+   if test "$enable_dricore" = yes ; then
+      if test "$GCC$GXX" != yesyes ; then
+      	 AC_MSG_WARN([Shared dricore requires GCC-compatible rpath handling.  Disabling shared dricore])
+	 enable_dricore=no
+      else
+	 DRICORE_GLSL_LIBS='$(TOP)/$(LIB_DIR)/libglsl.so'
+	 DRICORE_LIBS='$(TOP)/$(LIB_DIR)/libdricore.so'
+	 DRICORE_LIB_DEPS='-L$(TOP)/$(LIB_DIR) -Wl,-R$(DRI_DRIVER_INSTALL_DIR) -lglsl'
+      	 DRI_LIB_DEPS='-L$(TOP)/$(LIB_DIR) -Wl,-R$(DRI_DRIVER_INSTALL_DIR) -ldricore -lglsl'
+      	 DRI_CFLAGS='$(CFLAGS_NOVISIBILITY) -DUSE_DRICORE'
+      	 DRI_CXXFLAGS='$(CXXFLAGS_NOVISIBILITY) -DUSE_DRICORE'
+      	 MESA_MODULES='$(DRICORE_LIBS) $(DRICORE_GLSL_LIBS)'
+      fi
+   fi
+fi
+AC_SUBST([DRICORE_LIBS])
+AC_SUBST([DRICORE_GLSL_LIBS])
+AC_SUBST([DRICORE_LIB_DEPS])
+AC_SUBST([DRI_CXXFLAGS])
+AC_SUBST([DRI_CFLAGS])
+AC_SUBST([MESA_MODULES])
+
+AC_SUBST([HAVE_XF86VIDMODE])
+
+PKG_CHECK_MODULES([LIBDRM_RADEON],
+		  [libdrm_radeon >= $LIBDRM_RADEON_REQUIRED],
+		  HAVE_LIBDRM_RADEON=yes,
+		  HAVE_LIBDRM_RADEON=no)
+
+dnl
+dnl More X11 setup
+dnl
+if test "$mesa_driver" = xlib; then
+    DEFINES="$DEFINES -DUSE_XSHM"
+fi
+
+dnl
+dnl TLS detection
+dnl
+
+AC_ARG_ENABLE([glx-tls],
+    [AS_HELP_STRING([--enable-glx-tls],
+        [enable TLS support in GLX @<:@default=disabled@:>@])],
+    [GLX_USE_TLS="$enableval"],
+    [GLX_USE_TLS=no])
+AC_SUBST(GLX_TLS, ${GLX_USE_TLS})
+
+AS_IF([test "x$GLX_USE_TLS" = xyes],
+      [DEFINES="${DEFINES} -DGLX_USE_TLS -DPTHREADS"])
+
+dnl
+dnl More DRI setup
+dnl
+dnl Directory for DRI drivers
+AC_ARG_WITH([dri-driverdir],
+    [AS_HELP_STRING([--with-dri-driverdir=DIR],
+        [directory for the DRI drivers @<:@${libdir}/dri@:>@])],
+    [DRI_DRIVER_INSTALL_DIR="$withval"],
+    [DRI_DRIVER_INSTALL_DIR='${libdir}/dri'])
+AC_SUBST([DRI_DRIVER_INSTALL_DIR])
+dnl Extra search path for DRI drivers
+AC_ARG_WITH([dri-searchpath],
+    [AS_HELP_STRING([--with-dri-searchpath=DIRS...],
+        [semicolon delimited DRI driver search directories @<:@${libdir}/dri@:>@])],
+    [DRI_DRIVER_SEARCH_DIR="$withval"],
+    [DRI_DRIVER_SEARCH_DIR='${DRI_DRIVER_INSTALL_DIR}'])
+AC_SUBST([DRI_DRIVER_SEARCH_DIR])
+dnl Which drivers to build - default is chosen by platform
+AC_ARG_WITH([dri-drivers],
+    [AS_HELP_STRING([--with-dri-drivers@<:@=DIRS...@:>@],
+        [comma delimited DRI drivers list, e.g.
+        "swrast,i965,radeon" @<:@default=auto@:>@])],
+    [with_dri_drivers="$withval"],
+    [with_dri_drivers=yes])
+if test "x$with_dri_drivers" = x; then
+    with_dri_drivers=no
+fi
+
+dnl If $with_dri_drivers is yes, directories will be added through
+dnl platform checks
+DRI_DIRS=""
+case "$with_dri_drivers" in
+no) ;;
+yes)
+    DRI_DIRS="yes"
+    ;;
+*)
+    # verify the requested driver directories exist
+    dri_drivers=`IFS=', '; echo $with_dri_drivers`
+    for driver in $dri_drivers; do
+        test -d "$srcdir/src/mesa/drivers/dri/$driver" || \
+            AC_MSG_ERROR([DRI driver directory '$driver' doesn't exist])
+    done
+    DRI_DIRS="$dri_drivers"
+    ;;
+esac
+
+dnl Set DRI_DIRS, DEFINES and LIB_DEPS
+if test "$mesa_driver" = dri -o "$mesa_driver" = no; then
+    # Platform specific settings and drivers to build
+    case "$host_os" in
+    linux*)
+        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER"
+        if test "x$driglx_direct" = xyes; then
+            DEFINES="$DEFINES -DGLX_DIRECT_RENDERING"
+        fi
+        DEFINES="$DEFINES -DGLX_INDIRECT_RENDERING -DHAVE_ALIAS"
+
+        case "$host_cpu" in
+        x86_64)
+            # sis is missing because they have not be converted to use
+            # the new interface.  i810 are missing because there is no
+            # x86-64 system where they could *ever* be used.
+            if test "x$DRI_DIRS" = "xyes"; then
+                DRI_DIRS="i915 i965 mach64 mga r128 r200 r300 r600 radeon \
+                    savage tdfx unichrome swrast"
+            fi
+            ;;
+        powerpc*)
+            # Build only the drivers for cards that exist on PowerPC.
+            # At some point MGA will be added, but not yet.
+            if test "x$DRI_DIRS" = "xyes"; then
+                DRI_DIRS="mach64 r128 r200 r300 r600 radeon tdfx swrast"
+            fi
+            ;;
+        sparc*)
+            # Build only the drivers for cards that exist on sparc`
+            if test "x$DRI_DIRS" = "xyes"; then
+                DRI_DIRS="mach64 r128 r200 r300 r600 radeon swrast"
+            fi
+            ;;
+        esac
+        ;;
+    freebsd* | dragonfly* | *netbsd*)
+        DEFINES="$DEFINES -DPTHREADS -DUSE_EXTERNAL_DXTN_LIB=1"
+        DEFINES="$DEFINES -DIN_DRI_DRIVER -DHAVE_ALIAS"
+        DEFINES="$DEFINES -DGLX_INDIRECT_RENDERING"
+        if test "x$driglx_direct" = xyes; then
+            DEFINES="$DEFINES -DGLX_DIRECT_RENDERING"
+        fi
+
+        if test "x$DRI_DIRS" = "xyes"; then
+            DRI_DIRS="i810 i915 i965 mach64 mga r128 r200 r300 r600 radeon tdfx \
+                unichrome savage sis swrast"
+        fi
+        ;;
+    gnu*)
+        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER"
+        DEFINES="$DEFINES -DGLX_INDIRECT_RENDERING -DHAVE_ALIAS"
+	;;
+    solaris*)
+        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER"
+        DEFINES="$DEFINES -DGLX_INDIRECT_RENDERING"
+        if test "x$driglx_direct" = xyes; then
+            DEFINES="$DEFINES -DGLX_DIRECT_RENDERING"
+        fi
+        ;;
+    cygwin*)
+        DEFINES="$DEFINES -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER"
+        DEFINES="$DEFINES -DGLX_INDIRECT_RENDERING"
+        if test "x$driglx_direct" = xyes; then
+            DEFINES="$DEFINES -DGLX_DIRECT_RENDERING"
+        fi
+        if test "x$DRI_DIRS" = "xyes"; then
+            DRI_DIRS="swrast"
+        fi
+        ;;
+    esac
+
+    # default drivers
+    if test "x$DRI_DIRS" = "xyes"; then
+        DRI_DIRS="i810 i915 i965 mach64 mga r128 r200 r300 r600 radeon \
+            savage sis tdfx unichrome swrast"
+    fi
+
+    DRI_DIRS=`echo "$DRI_DIRS" | $SED 's/  */ /g'`
+
+    # Check for expat
+    if test "$mesa_driver" = dri; then
+        EXPAT_INCLUDES=""
+        EXPAT_LIB=-lexpat
+        AC_ARG_WITH([expat],
+            [AS_HELP_STRING([--with-expat=DIR],
+                [expat install directory])],[
+            EXPAT_INCLUDES="-I$withval/include"
+            CPPFLAGS="$CPPFLAGS $EXPAT_INCLUDES"
+            LDFLAGS="$LDFLAGS -L$withval/$LIB_DIR"
+            EXPAT_LIB="-L$withval/$LIB_DIR -lexpat"
+            ])
+        AC_CHECK_HEADER([expat.h],[],[AC_MSG_ERROR([Expat required for DRI.])])
+        AC_CHECK_LIB([expat],[XML_ParserCreate],[],
+            [AC_MSG_ERROR([Expat required for DRI.])])
+    fi
+
+    # put all the necessary libs together, including possibly libdricore
+    DRI_LIB_DEPS="$DRI_LIB_DEPS $SELINUX_LIBS $LIBDRM_LIBS $EXPAT_LIB -lm -lpthread $DLOPEN_LIBS"
+fi
+AC_SUBST([DRI_DIRS])
+AC_SUBST([EXPAT_INCLUDES])
+AC_SUBST([DRI_LIB_DEPS])
+
+case $DRI_DIRS in
+*i915*|*i965*)
+    PKG_CHECK_MODULES([INTEL], [libdrm_intel >= $LIBDRM_INTEL_REQUIRED])
+    ;;
+esac
+
+case $DRI_DIRS in
+*radeon*|*r200*|*r300*|*r600*)
+    if test "x$HAVE_LIBDRM_RADEON" = xyes; then
+	RADEON_CFLAGS="-DHAVE_LIBDRM_RADEON=1 $LIBDRM_RADEON_CFLAGS"
+	RADEON_LDFLAGS=$LIBDRM_RADEON_LIBS
+    fi
+    ;;
+esac
+AC_SUBST([RADEON_CFLAGS])
+AC_SUBST([RADEON_LDFLAGS])
+
+
+dnl
+dnl OSMesa configuration
+dnl
+if test "$mesa_driver" = xlib; then
+    default_gl_osmesa=yes
+else
+    default_gl_osmesa=no
+fi
+AC_ARG_ENABLE([gl-osmesa],
+    [AS_HELP_STRING([--enable-gl-osmesa],
+        [enable OSMesa with libGL @<:@default=enabled for xlib driver@:>@])],
+    [gl_osmesa="$enableval"],
+    [gl_osmesa="$default_gl_osmesa"])
+if test "x$gl_osmesa" = xyes; then
+    if test "x$enable_opengl" = xno; then
+        AC_MSG_ERROR([OpenGL is not available for OSMesa driver])
+    fi
+    if test "$mesa_driver" = osmesa; then
+        AC_MSG_ERROR([libGL is not available for OSMesa driver])
+    else
+        DRIVER_DIRS="$DRIVER_DIRS osmesa"
+    fi
+fi
+
+dnl Configure the channel bits for OSMesa (libOSMesa, libOSMesa16, ...)
+AC_ARG_WITH([osmesa-bits],
+    [AS_HELP_STRING([--with-osmesa-bits=BITS],
+        [OSMesa channel bits and library name: 8, 16, 32 @<:@default=8@:>@])],
+    [osmesa_bits="$withval"],
+    [osmesa_bits=8])
+if test "$mesa_driver" != osmesa && test "x$osmesa_bits" != x8; then
+    AC_MSG_WARN([Ignoring OSMesa channel bits for non-OSMesa driver])
+    osmesa_bits=8
+fi
+case "x$osmesa_bits" in
+x8)
+    OSMESA_LIB=OSMesa
+    ;;
+x16|x32)
+    OSMESA_LIB="OSMesa$osmesa_bits"
+    DEFINES="$DEFINES -DCHAN_BITS=$osmesa_bits -DDEFAULT_SOFTWARE_DEPTH_BITS=31"
+    ;;
+*)
+    AC_MSG_ERROR([OSMesa bits '$osmesa_bits' is not a valid option])
+    ;;
+esac
+AC_SUBST([OSMESA_LIB])
+
+case "$DRIVER_DIRS" in
+*osmesa*)
+    # only link libraries with osmesa if shared
+    if test "$enable_static" = no; then
+        OSMESA_LIB_DEPS="-lm -lpthread $SELINUX_LIBS $DLOPEN_LIBS"
+    else
+        OSMESA_LIB_DEPS=""
+    fi
+    OSMESA_MESA_DEPS=""
+    OSMESA_PC_LIB_PRIV="-lm -lpthread $SELINUX_LIBS $DLOPEN_LIBS"
+    ;;
+esac
+AC_SUBST([OSMESA_LIB_DEPS])
+AC_SUBST([OSMESA_MESA_DEPS])
+AC_SUBST([OSMESA_PC_REQ])
+AC_SUBST([OSMESA_PC_LIB_PRIV])
+
+dnl
+dnl EGL configuration
+dnl
+AC_ARG_ENABLE([egl],
+    [AS_HELP_STRING([--disable-egl],
+        [disable EGL library @<:@default=enabled@:>@])],
+    [enable_egl="$enableval"],
+    [enable_egl=yes])
+if test "x$enable_egl" = xno; then
+    if test "x$mesa_driver" = xno; then
+        AC_MSG_ERROR([cannot disable EGL when there is no mesa driver])
+    fi
+    if test "x$enable_openvg" = xyes; then
+        AC_MSG_ERROR([cannot enable OpenVG without EGL])
+    fi
+fi
+if test "x$enable_egl" = xyes; then
+    SRC_DIRS="$SRC_DIRS egl"
+    EGL_LIB_DEPS="$DLOPEN_LIBS -lpthread"
+    EGL_DRIVERS_DIRS=""
+    if test "$enable_static" != yes; then
+        # build egl_glx when libGL is built
+        if test "$mesa_driver" = xlib -o "$mesa_driver" = dri; then
+            EGL_DRIVERS_DIRS="glx"
+        fi
+
+        if test "$mesa_driver" = dri; then
+            # build egl_dri2 when xcb-dri2 is available
+            PKG_CHECK_MODULES([XCB_DRI2], [x11-xcb xcb-dri2 xcb-xfixes],
+            		  [have_xcb_dri2=yes],[have_xcb_dri2=no])
+            PKG_CHECK_MODULES([LIBUDEV], [libudev > 150],
+            		  [have_libudev=yes],[have_libudev=no])
+            
+            if test "$have_xcb_dri2" = yes; then
+                EGL_DRIVER_DRI2=dri2
+                DEFINES="$DEFINES -DHAVE_XCB_DRI2"
+                if test "$have_libudev" = yes; then
+                    DEFINES="$DEFINES -DHAVE_LIBUDEV"
+                fi
+                # workaround a bug in xcb-dri2 generated by xcb-proto 1.6
+                AC_CHECK_LIB(xcb-dri2, xcb_dri2_connect_alignment_pad, [],
+                          [DEFINES="$DEFINES -DXCB_DRI2_CONNECT_DEVICE_NAME_BROKEN"])
+            fi
+	fi
+
+        EGL_DRIVERS_DIRS="$EGL_DRIVERS_DIRS $EGL_DRIVER_DRI2"
+    fi
+fi
+AC_SUBST([EGL_LIB_DEPS])
+AC_SUBST([EGL_DRIVERS_DIRS])
+
+dnl
+dnl GLU configuration
+dnl
+AC_ARG_ENABLE([glu],
+    [AS_HELP_STRING([--disable-glu],
+        [enable OpenGL Utility library @<:@default=enabled@:>@])],
+    [enable_glu="$enableval"],
+    [enable_glu=yes])
+
+if test "x$enable_glu" = xyes -a "x$mesa_driver" = xno; then
+    AC_MSG_NOTICE([Disabling GLU since there is no OpenGL driver])
+    enable_glu=no
+fi
+
+if test "x$enable_glu" = xyes; then
+    SRC_DIRS="$SRC_DIRS glu"
+
+    case "$mesa_driver" in
+    osmesa)
+        # Link libGLU to libOSMesa instead of libGL
+        GLU_LIB_DEPS=""
+        GLU_PC_REQ="osmesa"
+        if test "$enable_static" = no; then
+            GLU_MESA_DEPS='-l$(OSMESA_LIB)'
+        else
+            GLU_MESA_DEPS=""
+        fi
+        ;;
+    *)
+        # If static, empty GLU_LIB_DEPS and add libs for programs to link
+        GLU_PC_REQ="gl"
+        GLU_PC_LIB_PRIV="-lm"
+        if test "$enable_static" = no; then
+            GLU_LIB_DEPS="-lm"
+            GLU_MESA_DEPS='-l$(GL_LIB)'
+        else
+            GLU_LIB_DEPS=""
+            GLU_MESA_DEPS=""
+            APP_LIB_DEPS="$APP_LIB_DEPS -lstdc++"
+        fi
+        ;;
+    esac
+fi
+if test "$enable_static" = no; then
+    GLU_LIB_DEPS="$GLU_LIB_DEPS $OS_CPLUSPLUS_LIBS"
+fi
+GLU_PC_LIB_PRIV="$GLU_PC_LIB_PRIV $OS_CPLUSPLUS_LIBS"
+AC_SUBST([GLU_LIB_DEPS])
+AC_SUBST([GLU_MESA_DEPS])
+AC_SUBST([GLU_PC_REQ])
+AC_SUBST([GLU_PC_REQ_PRIV])
+AC_SUBST([GLU_PC_LIB_PRIV])
+AC_SUBST([GLU_PC_CFLAGS])
+
+dnl
+dnl GLw configuration
+dnl
+AC_ARG_ENABLE([glw],
+    [AS_HELP_STRING([--disable-glw],
+        [enable Xt/Motif widget library @<:@default=enabled@:>@])],
+    [enable_glw="$enableval"],
+    [enable_glw=yes])
+dnl Don't build GLw on osmesa
+if test "x$enable_glw" = xyes; then
+    case "$mesa_driver" in
+    osmesa|no)
+        AC_MSG_NOTICE([Disabling GLw since there is no OpenGL driver])
+        enable_glw=no
+        ;;
+    esac
+fi
+AC_ARG_ENABLE([motif],
+    [AS_HELP_STRING([--enable-motif],
+        [use Motif widgets in GLw @<:@default=disabled@:>@])],
+    [enable_motif="$enableval"],
+    [enable_motif=no])
+
+if test "x$enable_glw" = xyes; then
+    SRC_DIRS="$SRC_DIRS glw"
+    if test "$x11_pkgconfig" = yes; then
+        PKG_CHECK_MODULES([GLW],[x11 xt])
+        GLW_PC_REQ_PRIV="x11 xt"
+        GLW_LIB_DEPS="$GLW_LIBS"
+    else
+        # should check these...
+        GLW_LIB_DEPS="$X_LIBS -lXt -lX11"
+        GLW_PC_LIB_PRIV="$GLW_LIB_DEPS"
+        GLW_PC_CFLAGS="$X11_INCLUDES"
+    fi
+
+    GLW_SOURCES="GLwDrawA.c"
+    MOTIF_CFLAGS=
+    if test "x$enable_motif" = xyes; then
+        GLW_SOURCES="$GLW_SOURCES GLwMDrawA.c"
+        AC_PATH_PROG([MOTIF_CONFIG], [motif-config], [no])
+        if test "x$MOTIF_CONFIG" != xno; then
+            MOTIF_CFLAGS=`$MOTIF_CONFIG --cflags`
+            MOTIF_LIBS=`$MOTIF_CONFIG --libs`
+        else
+            AC_CHECK_HEADER([Xm/PrimitiveP.h], [],
+                [AC_MSG_ERROR([Can't locate Motif headers])])
+            AC_CHECK_LIB([Xm], [XmGetPixmap], [MOTIF_LIBS="-lXm"],
+                [AC_MSG_ERROR([Can't locate Motif Xm library])])
+        fi
+        # MOTIF_LIBS is prepended to GLW_LIB_DEPS since Xm needs Xt/X11
+        GLW_LIB_DEPS="$MOTIF_LIBS $GLW_LIB_DEPS"
+        GLW_PC_LIB_PRIV="$MOTIF_LIBS $GLW_PC_LIB_PRIV"
+        GLW_PC_CFLAGS="$MOTIF_CFLAGS $GLW_PC_CFLAGS"
+    fi
+
+    # If static, empty GLW_LIB_DEPS and add libs for programs to link
+    GLW_PC_LIB_PRIV="$GLW_PC_LIB_PRIV"
+    if test "$enable_static" = no; then
+        GLW_MESA_DEPS='-l$(GL_LIB)'
+        GLW_LIB_DEPS="$GLW_LIB_DEPS"
+    else
+        APP_LIB_DEPS="$APP_LIB_DEPS $GLW_LIB_DEPS"
+        GLW_LIB_DEPS=""
+        GLW_MESA_DEPS=""
+    fi
+fi
+AC_SUBST([GLW_LIB_DEPS])
+AC_SUBST([GLW_MESA_DEPS])
+AC_SUBST([GLW_SOURCES])
+AC_SUBST([MOTIF_CFLAGS])
+AC_SUBST([GLW_PC_REQ_PRIV])
+AC_SUBST([GLW_PC_LIB_PRIV])
+AC_SUBST([GLW_PC_CFLAGS])
+
+dnl
+dnl GLUT configuration
+dnl
+if test -f "$srcdir/include/GL/glut.h"; then
+    default_glut=yes
+else
+    default_glut=no
+fi
+AC_ARG_ENABLE([glut],
+    [AS_HELP_STRING([--disable-glut],
+        [enable GLUT library @<:@default=enabled if source available@:>@])],
+    [enable_glut="$enableval"],
+    [enable_glut="$default_glut"])
+
+dnl Don't build glut on osmesa
+if test "x$enable_glut" = xyes; then
+    case "$mesa_driver" in
+    osmesa|no)
+        AC_MSG_NOTICE([Disabling glut since there is no OpenGL driver])
+        enable_glut=no
+        ;;
+    esac
+fi
+dnl Can't build glut if GLU not available
+if test "x$enable_glu$enable_glut" = xnoyes; then
+    AC_MSG_WARN([Disabling glut since GLU is disabled])
+    enable_glut=no
+fi
+
+if test "x$enable_glut" = xyes; then
+    SRC_DIRS="$SRC_DIRS glut/glx"
+    if test "$x11_pkgconfig" = yes; then
+        PKG_CHECK_MODULES([GLUT],[x11 xmu xi])
+        GLUT_PC_REQ_PRIV="x11 xmu xi"
+        GLUT_LIB_DEPS="$GLUT_LIBS"
+    else
+        # should check these...
+        GLUT_LIB_DEPS="$X_LIBS -lX11 -lXmu -lXi"
+        GLUT_PC_LIB_PRIV="$GLUT_LIB_DEPS"
+        GLUT_PC_CFLAGS="$X11_INCLUDES"
+    fi
+    if test "x$GCC" = xyes; then
+        GLUT_CFLAGS="$GLUT_CFLAGS -fexceptions"
+    fi
+    GLUT_LIB_DEPS="$GLUT_LIB_DEPS -lm"
+    GLUT_PC_LIB_PRIV="$GLUT_PC_LIB_PRIV -lm"
+
+    # If static, empty GLUT_LIB_DEPS and add libs for programs to link
+    if test "$enable_static" = no; then
+        GLUT_MESA_DEPS='-l$(GLU_LIB) -l$(GL_LIB)'
+    else
+        APP_LIB_DEPS="$APP_LIB_DEPS $GLUT_LIB_DEPS"
+        GLUT_LIB_DEPS=""
+        GLUT_MESA_DEPS=""
+    fi
+fi
+AC_SUBST([GLUT_LIB_DEPS])
+AC_SUBST([GLUT_MESA_DEPS])
+AC_SUBST([GLUT_CFLAGS])
+AC_SUBST([GLUT_PC_REQ_PRIV])
+AC_SUBST([GLUT_PC_LIB_PRIV])
+AC_SUBST([GLUT_PC_CFLAGS])
+
+dnl
+dnl Program library dependencies
+dnl    Only libm is added here if necessary as the libraries should
+dnl    be pulled in by the linker
+dnl
+if test "x$APP_LIB_DEPS" = x; then
+    case "$host_os" in
+    solaris*)
+        APP_LIB_DEPS="-lX11 -lsocket -lnsl -lm"
+        ;;
+    cygwin*)
+        APP_LIB_DEPS="-lX11"
+        ;;
+    *)
+        APP_LIB_DEPS="-lm"
+        ;;
+    esac
+fi
+AC_SUBST([APP_LIB_DEPS])
+AC_SUBST([PROGRAM_DIRS])
+
+dnl
+dnl Gallium configuration
+dnl
+AC_ARG_ENABLE([gallium],
+    [AS_HELP_STRING([--disable-gallium],
+        [build gallium @<:@default=enabled@:>@])],
+    [enable_gallium="$enableval"],
+    [enable_gallium=yes])
+if test "x$enable_gallium" = xno -a "x$enable_openvg" = xyes; then
+    AC_MSG_ERROR([cannot enable OpenVG without Gallium])
+fi
+if test "x$enable_gallium" = xyes; then
+    SRC_DIRS="$SRC_DIRS gallium gallium/winsys gallium/targets"
+    AC_PATH_PROG([LLVM_CONFIG], [llvm-config], [no])
+fi
+
+AC_SUBST([LLVM_CFLAGS])
+AC_SUBST([LLVM_LIBS])
+AC_SUBST([LLVM_LDFLAGS])
+AC_SUBST([LLVM_VERSION])
+
+dnl
+dnl Gallium state trackers configuration
+dnl
+
+AC_ARG_ENABLE([gallium-egl],
+    [AS_HELP_STRING([--enable-gallium-egl],
+        [enable gallium EGL state tracker @<:@default=auto@:>@])],
+    [enable_gallium_egl="$enableval"],
+    [enable_gallium_egl=auto])
+if test "x$enable_gallium_egl" = xauto; then
+    case "$mesa_driver" in
+    dri|no)
+        enable_gallium_egl=$enable_egl
+        ;;
+    *)
+        enable_gallium_egl=$enable_openvg
+        ;;
+    esac
+fi
+case "x$enable_egl$enable_gallium_egl" in
+xnoyes)
+    AC_MSG_ERROR([cannot build Gallium EGL state tracker without EGL])
+esac
+
+AC_ARG_WITH([state-trackers],
+    [AS_HELP_STRING([--with-state-trackers@<:@=DIRS...@:>@],
+        [comma delimited state_trackers list, e.g.
+        "egl,glx" @<:@default=auto@:>@])],
+    [with_state_trackers="$withval"],
+    [with_state_trackers=yes])
+
+case "$with_state_trackers" in
+no)
+    GALLIUM_STATE_TRACKERS_DIRS=""
+    ;;
+yes)
+    # look at what else is built
+    case "$mesa_driver" in
+    xlib)
+        GALLIUM_STATE_TRACKERS_DIRS=glx
+        ;;
+    dri)
+        GALLIUM_STATE_TRACKERS_DIRS="dri"
+        HAVE_ST_DRI="yes"
+        # Have only tested st/xorg on 1.6.0 servers
+        PKG_CHECK_MODULES(XORG, [xorg-server >= 1.6.0 libdrm >= $LIBDRM_XORG_REQUIRED libkms >= $LIBKMS_XORG_REQUIRED],
+            HAVE_ST_XORG="yes"; GALLIUM_STATE_TRACKERS_DIRS="$GALLIUM_STATE_TRACKERS_DIRS xorg",
+            HAVE_ST_XORG="no")
+        ;;
+    esac
+
+    if test "x$enable_egl" = xyes; then
+        if test "$enable_openvg" = yes; then
+            GALLIUM_STATE_TRACKERS_DIRS="$GALLIUM_STATE_TRACKERS_DIRS vega"
+            st_egl="yes"
+        fi
+
+        if test "$enable_gallium_egl" = yes; then
+            GALLIUM_STATE_TRACKERS_DIRS="$GALLIUM_STATE_TRACKERS_DIRS egl"
+            HAVE_ST_EGL="yes"
+        fi
+    fi
+    ;;
+*)
+    # verify the requested state tracker exist
+    state_trackers=""
+    _state_trackers=`IFS=', '; echo $with_state_trackers`
+    for tracker in $_state_trackers; do
+        case "$tracker" in
+        dri)
+            if test "x$mesa_driver" != xdri; then
+                AC_MSG_ERROR([cannot build dri state tracker without mesa driver set to dri])
+            fi
+            HAVE_ST_DRI="yes"
+            ;;
+        egl)
+            if test "x$enable_egl" != xyes; then
+                AC_MSG_ERROR([cannot build egl state tracker without EGL library])
+            fi
+            HAVE_ST_EGL="yes"
+            ;;
+        xorg)
+            PKG_CHECK_MODULES([XORG], [xorg-server >= 1.6.0])
+            PKG_CHECK_MODULES([LIBDRM_XORG], [libdrm >= $LIBDRM_XORG_REQUIRED])
+            PKG_CHECK_MODULES([LIBKMS_XORG], [libkms >= $LIBKMS_XORG_REQUIRED])
+            HAVE_ST_XORG="yes"
+            ;;
+        vega)
+            if test "x$enable_openvg" != xyes; then
+                AC_MSG_ERROR([cannot build vega state tracker without --enable-openvg])
+            fi
+            have_st_vega="yes"
+            ;;
+        esac
+
+	if test -n "$tracker"; then
+            test -d "$srcdir/src/gallium/state_trackers/$tracker" || \
+                AC_MSG_ERROR([state tracker '$tracker' doesn't exist])
+            if test -n "$state_trackers"; then
+                state_trackers="$state_trackers $tracker"
+            else
+                state_trackers="$tracker"
+            fi
+        fi
+    done
+    GALLIUM_STATE_TRACKERS_DIRS="$state_trackers"
+
+    # append --enable-openvg/--enable-gallium-egl to --with-state-trackers
+    if test "x$have_st_vega" != xyes -a "x$enable_openvg" = xyes; then
+        AC_MSG_ERROR([--with-state-trackers specified but vega is missing])
+    fi
+    if test "x$HAVE_ST_EGL" != xyes -a "x$enable_gallium_egl" = xyes; then
+        AC_MSG_ERROR([--with-state-trackers specified but egl is missing])
+    fi
+    ;;
+esac
+
+
+EGL_CLIENT_APIS=""
+VG_LIB_DEPS=""
+
+case "x$enable_opengl$enable_gles1$enable_gles2" in
+x*yes*)
+    EGL_CLIENT_APIS="$EGL_CLIENT_APIS "'$(GL_LIB)'
+    ;;
+esac
+if test "x$enable_openvg" = xyes; then
+    EGL_CLIENT_APIS="$EGL_CLIENT_APIS "'$(VG_LIB)'
+    VG_LIB_DEPS="$VG_LIB_DEPS -lpthread"
+fi
+
+AC_SUBST([VG_LIB_DEPS])
+AC_SUBST([EGL_CLIENT_APIS])
+
+if test "x$HAVE_ST_EGL" = xyes; then
+	GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS egl"
+fi
+
+if test "x$HAVE_ST_XORG" = xyes; then
+    PKG_CHECK_MODULES(XEXT, [xextproto >= 7.0.99.1],
+        HAVE_XEXTPROTO_71="yes"; DEFINES="$DEFINES -DHAVE_XEXTPROTO_71",
+        HAVE_XEXTPROTO_71="no")
+fi
+
+AC_ARG_WITH([egl-platforms],
+    [AS_HELP_STRING([--with-egl-platforms@<:@=DIRS...@:>@],
+        [comma delimited native platforms libEGL supports, e.g.
+        "x11,drm" @<:@default=auto@:>@])],
+    [with_egl_platforms="$withval"],
+    [with_egl_platforms=yes])
+AC_ARG_WITH([egl-displays],
+    [AS_HELP_STRING([--with-egl-displays@<:@=DIRS...@:>@],
+        [DEPRECATED.  Use --with-egl-platforms instead])],
+    [with_egl_platforms="$withval"])
+
+EGL_PLATFORMS=""
+WAYLAND_EGL_LIB_DEPS=""
+
+case "$with_egl_platforms" in
+yes)
+    if test "x$enable_egl" = xyes && test "x$mesa_driver" != xosmesa; then
+        EGL_PLATFORMS="x11"
+        if test "$mesa_driver" = dri; then
+            EGL_PLATFORMS="$EGL_PLATFORMS drm"
+        fi
+    fi
+    ;;
+*)
+    if test "x$enable_egl" != xyes; then
+        AC_MSG_ERROR([cannot build egl state tracker without EGL library])
+    fi
+    # verify the requested driver directories exist
+    egl_platforms=`IFS=', '; echo $with_egl_platforms`
+    for plat in $egl_platforms; do
+        test -d "$srcdir/src/gallium/state_trackers/egl/$plat" || \
+            AC_MSG_ERROR([EGL platform '$plat' doesn't exist])
+        if test "$plat" = "fbdev"; then
+                GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/fbdev"
+        fi
+	if test "$plat" = "wayland"; then
+		PKG_CHECK_MODULES([WAYLAND], [wayland-client wayland-server],, \
+				  [AC_MSG_ERROR([cannot find libwayland-client])])
+		WAYLAND_EGL_LIB_DEPS="$WAYLAND_LIBS $LIBDRM_LIBS"
+	fi
+    done
+    EGL_PLATFORMS="$egl_platforms"
+    ;;
+esac
+AC_SUBST([EGL_PLATFORMS])
+
+AC_SUBST([WAYLAND_EGL_LIB_DEPS])
+WAYLAND_EGL_PC_REQ_PRIV="wayland-client libdrm"
+WAYLAND_EGL_PC_LIB_PRIV=
+WAYLAND_EGL_PC_CFLAGS=
+
+AC_SUBST([WAYLAND_EGL_PC_REQ_PRIV])
+AC_SUBST([WAYLAND_EGL_PC_LIB_PRIV])
+AC_SUBST([WAYLAND_EGL_PC_CFLAGS])
+
+
+AC_ARG_WITH([egl-driver-dir],
+    [AS_HELP_STRING([--with-egl-driver-dir=DIR],
+                    [directory for EGL drivers [[default=${libdir}/egl]]])],
+    [EGL_DRIVER_INSTALL_DIR="$withval"],
+    [EGL_DRIVER_INSTALL_DIR='${libdir}/egl'])
+AC_SUBST([EGL_DRIVER_INSTALL_DIR])
+
+AC_ARG_WITH([xorg-driver-dir],
+    [AS_HELP_STRING([--with-xorg-driver-dir=DIR],
+                    [Default xorg driver directory[[default=${libdir}/xorg/modules/drivers]]])],
+    [XORG_DRIVER_INSTALL_DIR="$withval"],
+    [XORG_DRIVER_INSTALL_DIR="${libdir}/xorg/modules/drivers"])
+AC_SUBST([XORG_DRIVER_INSTALL_DIR])
+
+AC_ARG_WITH([max-width],
+    [AS_HELP_STRING([--with-max-width=N],
+                    [Maximum framebuffer width (4096)])],
+    [DEFINES="${DEFINES} -DMAX_WIDTH=${withval}";
+     AS_IF([test "${withval}" -gt "4096"],
+           [AC_MSG_WARN([Large framebuffer: see s_tritemp.h comments.])])]
+)
+AC_ARG_WITH([max-height],
+    [AS_HELP_STRING([--with-max-height=N],
+                    [Maximum framebuffer height (4096)])],
+    [DEFINES="${DEFINES} -DMAX_HEIGHT=${withval}";
+     AS_IF([test "${withval}" -gt "4096"],
+           [AC_MSG_WARN([Large framebuffer: see s_tritemp.h comments.])])]
+)
+
+dnl
+dnl Gallium LLVM
+dnl
+AC_ARG_ENABLE([gallium-llvm],
+    [AS_HELP_STRING([--enable-gallium-llvm],
+        [build gallium LLVM support @<:@default=disabled@:>@])],
+    [enable_gallium_llvm="$enableval"],
+    [enable_gallium_llvm=auto])
+if test "x$enable_gallium_llvm" = xyes; then
+    if test "x$LLVM_CONFIG" != xno; then
+	LLVM_VERSION=`$LLVM_CONFIG --version`
+	LLVM_CFLAGS=`$LLVM_CONFIG --cppflags`
+	LLVM_LIBS="`$LLVM_CONFIG --libs` -lstdc++"
+
+	LLVM_LDFLAGS=`$LLVM_CONFIG --ldflags`
+	GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS llvmpipe"
+	DEFINES="$DEFINES -DGALLIUM_LLVMPIPE -D__STDC_CONSTANT_MACROS"
+	MESA_LLVM=1
+    else
+	MESA_LLVM=0
+    fi
+else
+    MESA_LLVM=0
+fi
+
+dnl
+dnl Gallium helper functions
+dnl
+gallium_check_st() {
+    if test "x$HAVE_ST_DRI" = xyes || test "x$HAVE_ST_XORG" = xyes; then
+         GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS $1"
+    fi
+    if test "x$HAVE_ST_DRI" = xyes && test "x$2" != x; then
+         GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS $2"
+    fi
+    if test "x$HAVE_ST_XORG" = xyes && test "x$3" != x; then
+         GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS $3"
+    fi
+}
+
+
+dnl
+dnl Gallium SVGA configuration
+dnl
+AC_ARG_ENABLE([gallium-svga],
+    [AS_HELP_STRING([--enable-gallium-svga],
+        [build gallium SVGA @<:@default=disabled@:>@])],
+    [enable_gallium_svga="$enableval"],
+    [enable_gallium_svga=auto])
+if test "x$enable_gallium_svga" = xyes; then
+    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS svga"
+    gallium_check_st "svga/drm" "dri-vmwgfx" "xorg-vmwgfx"
+elif test "x$enable_gallium_svga" = xauto; then
+    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS svga"
+fi
+
+dnl
+dnl Gallium i915 configuration
+dnl
+AC_ARG_ENABLE([gallium-i915],
+    [AS_HELP_STRING([--enable-gallium-i915],
+        [build gallium i915 @<:@default=disabled@:>@])],
+    [enable_gallium_i915="$enableval"],
+    [enable_gallium_i915=auto])
+if test "x$enable_gallium_i915" = xyes; then
+    GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS i915/sw"
+    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS i915"
+    gallium_check_st "i915/drm" "dri-i915" "xorg-i915"
+elif test "x$enable_gallium_i915" = xauto; then
+    GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS i915/sw"
+    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS i915"
+fi
+
+dnl
+dnl Gallium i965 configuration
+dnl
+AC_ARG_ENABLE([gallium-i965],
+    [AS_HELP_STRING([--enable-gallium-i965],
+        [build gallium i965 @<:@default=disabled@:>@])],
+    [enable_gallium_i965="$enableval"],
+    [enable_gallium_i965=auto])
+if test "x$enable_gallium_i965" = xyes; then
+    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS i965"
+    gallium_check_st "i965/drm" "dri-i965" "xorg-i965"
+elif test "x$enable_gallium_i965" = xauto; then
+    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS i965"
+fi
+
+dnl
+dnl Gallium Radeon r300g configuration
+dnl
+AC_ARG_ENABLE([gallium-radeon],
+    [AS_HELP_STRING([--enable-gallium-radeon],
+        [build gallium radeon @<:@default=disabled@:>@])],
+    [enable_gallium_radeon="$enableval"],
+    [enable_gallium_radeon=auto])
+if test "x$enable_gallium_radeon" = xauto; then
+    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS r300"
+    gallium_check_st "radeon/drm" "dri-r300"
+fi
+if test "x$enable_gallium_radeon" = xyes; then
+    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS r300"
+    gallium_check_st "radeon/drm" "dri-r300" "xorg-radeon"
+fi
+
+dnl
+dnl Gallium Radeon r600g configuration
+dnl
+AC_ARG_ENABLE([gallium-r600],
+    [AS_HELP_STRING([--enable-gallium-r600],
+        [build gallium radeon @<:@default=disabled@:>@])],
+    [enable_gallium_r600="$enableval"],
+    [enable_gallium_r600=auto])
+if test "x$enable_gallium_r600" = xyes; then
+    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS r600"
+    gallium_check_st "r600/drm" "dri-r600"
+fi
+
+dnl
+dnl Gallium Nouveau configuration
+dnl
+AC_ARG_ENABLE([gallium-nouveau],
+    [AS_HELP_STRING([--enable-gallium-nouveau],
+        [build gallium nouveau @<:@default=disabled@:>@])],
+    [enable_gallium_nouveau="$enableval"],
+    [enable_gallium_nouveau=no])
+if test "x$enable_gallium_nouveau" = xyes; then
+    GALLIUM_DRIVERS_DIRS="$GALLIUM_DRIVERS_DIRS nouveau nvfx nv50 nvc0"
+    gallium_check_st "nouveau/drm" "dri-nouveau" "xorg-nouveau"
+fi
+
+dnl
+dnl Gallium swrast configuration
+dnl
+AC_ARG_ENABLE([gallium-swrast],
+    [AS_HELP_STRING([--enable-gallium-swrast],
+        [build gallium swrast @<:@default=auto@:>@])],
+    [enable_gallium_swrast="$enableval"],
+    [enable_gallium_swrast=auto])
+if test "x$enable_gallium_swrast" = xyes || test "x$enable_gallium_swrast" = xauto; then
+    if test "x$HAVE_ST_DRI" = xyes; then
+        GALLIUM_TARGET_DIRS="$GALLIUM_TARGET_DIRS dri-swrast"
+    fi
+fi
+
+dnl prepend CORE_DIRS to SRC_DIRS
+SRC_DIRS="$CORE_DIRS $SRC_DIRS"
+
+dnl Restore LDFLAGS and CPPFLAGS
+LDFLAGS="$_SAVE_LDFLAGS"
+CPPFLAGS="$_SAVE_CPPFLAGS"
+
+dnl Substitute the config
+AC_CONFIG_FILES([configs/autoconf])
+
+dnl Replace the configs/current symlink
+AC_CONFIG_COMMANDS([configs],[
+if test -f configs/current || test -L configs/current; then
+    rm -f configs/current
+fi
+ln -s autoconf configs/current
+])
+
+AC_OUTPUT
+
+dnl
+dnl Output some configuration info for the user
+dnl
+echo ""
+echo "        prefix:          $prefix"
+echo "        exec_prefix:     $exec_prefix"
+echo "        libdir:          $libdir"
+echo "        includedir:      $includedir"
+
+dnl API info
+echo ""
+echo "        OpenGL:          $enable_opengl (ES1: $enable_gles1 ES2: $enable_gles2)"
+echo "        OpenVG:          $enable_openvg"
+
+dnl Driver info
+echo ""
+echo "        Driver:          $mesa_driver"
+if test "$mesa_driver" != no; then
+    if echo "$DRIVER_DIRS" | grep 'osmesa' >/dev/null 2>&1; then
+        echo "        OSMesa:          lib$OSMESA_LIB"
+    else
+        echo "        OSMesa:          no"
+    fi
+    if test "$mesa_driver" = dri; then
+        # cleanup the drivers var
+        dri_dirs=`echo $DRI_DIRS | $SED 's/^ *//;s/  */ /;s/ *$//'`
+        if test "x$DRI_DIRS" = x; then
+            echo "        DRI drivers:     no"
+        else
+            echo "        DRI drivers:     $dri_dirs"
+        fi
+        echo "        DRI driver dir:  $DRI_DRIVER_INSTALL_DIR"
+        echo "        Use XCB:         $enable_xcb"
+        echo "        Shared dricore:  $enable_dricore"
+    fi
+fi
+echo ""
+echo "        GLU:             $enable_glu"
+echo "        GLw:             $enable_glw (Motif: $enable_motif)"
+echo "        glut:            $enable_glut"
+
+dnl EGL
+echo ""
+echo "        EGL:             $enable_egl"
+if test "$enable_egl" = yes; then
+    echo "        EGL platforms:   $EGL_PLATFORMS"
+
+    egl_drivers=""
+    for d in $EGL_DRIVERS_DIRS; do
+        egl_drivers="$egl_drivers builtin:egl_$d"
+    done
+
+    if test "$enable_gallium" = yes -a "$HAVE_ST_EGL" = yes; then
+        echo "        EGL drivers:    ${egl_drivers} egl_gallium"
+        echo "        EGL Gallium STs:$EGL_CLIENT_APIS"
+    else
+        echo "        EGL drivers:    $egl_drivers"
+    fi
+fi
+
+echo ""
+if test "x$MESA_LLVM" = x1; then
+    echo "        llvm:            yes"
+    echo "        llvm-config:     $LLVM_CONFIG"
+    echo "        llvm-version:    $LLVM_VERSION"
+else
+    echo "        llvm:            no"
+fi
+
+echo ""
+if echo "$SRC_DIRS" | grep 'gallium' >/dev/null 2>&1; then
+    echo "        Gallium:         yes"
+    echo "        Gallium dirs:    $GALLIUM_DIRS"
+    echo "        Target dirs:     $GALLIUM_TARGET_DIRS"
+    echo "        Winsys dirs:     $GALLIUM_WINSYS_DIRS"
+    echo "        Driver dirs:     $GALLIUM_DRIVERS_DIRS"
+    echo "        Trackers dirs:   $GALLIUM_STATE_TRACKERS_DIRS"
+else
+    echo "        Gallium:         no"
+fi
+
+dnl Libraries
+echo ""
+echo "        Shared libs:     $enable_shared"
+echo "        Static libs:     $enable_static"
+
+dnl Compiler options
+# cleanup the CFLAGS/CXXFLAGS/DEFINES vars
+cflags=`echo $CFLAGS $OPT_FLAGS $PIC_FLAGS $ARCH_FLAGS | \
+    $SED 's/^ *//;s/  */ /;s/ *$//'`
+cxxflags=`echo $CXXFLAGS $OPT_FLAGS $PIC_FLAGS $ARCH_FLAGS | \
+    $SED 's/^ *//;s/  */ /;s/ *$//'`
+defines=`echo $DEFINES $ASM_FLAGS | $SED 's/^ *//;s/  */ /;s/ *$//'`
+echo ""
+echo "        CFLAGS:          $cflags"
+echo "        CXXFLAGS:        $cxxflags"
+echo "        Macros:          $defines"
+echo ""
+echo "        PYTHON2:         $PYTHON2"
+
+echo ""
+echo "        Run '${MAKE-make}' to build Mesa"
+echo ""
diff --git a/mesalib/docs/GL3.txt b/mesalib/docs/GL3.txt
index 339a0cbdf..e373a9453 100644
--- a/mesalib/docs/GL3.txt
+++ b/mesalib/docs/GL3.txt
@@ -12,11 +12,11 @@ Feature                                               Status
 
 GL 3.0:
 
-GLSL changes (GL_EXT_gpu_shader4, etc)                not started
+GLSL 1.30 (GL_EXT_gpu_shader4, etc.)                  not started
 Conditional rendering (GL_NV_conditional_render)      DONE (swrast & softpipe)
 Map buffer subranges (GL_ARB_map_buffer_range)        DONE
 Clamping controls (GL_ARB_color_buffer_float)         DONE
-Float textures, renderbuffers (GL_ARB_texture_float)  BRANCH ~mareko/mesa floating2
+Float textures, renderbuffers (GL_ARB_texture_float)  DONE (gallium r300)
 GL_EXT_packed_float                                   not started
 GL_EXT_texture_shared_exponent                        not started
 Float depth buffers (GL_ARB_depth_buffer_float)       not started
@@ -45,7 +45,7 @@ Depth format cube textures                            0% done
 
 GL 3.1:
 
-GLSL 1.30 and 1.40                                    not started
+GLSL 1.40                                             not started
 Instanced drawing (GL_ARB_draw_instanced)             DONE (gallium, swrast)
 Buffer copying (GL_ARB_copy_buffer)                   DONE
 Primitive restart (GL_NV_primitive_restart)           DONE (gallium)
diff --git a/mesalib/docs/relnotes-7.11.html b/mesalib/docs/relnotes-7.11.html
index c8d380e3b..131fecd18 100644
--- a/mesalib/docs/relnotes-7.11.html
+++ b/mesalib/docs/relnotes-7.11.html
@@ -36,12 +36,22 @@ tbd
 
 <h2>New features</h2>
 <ul>
+<li>GL_ARB_color_buffer_float (gallium drivers)
+<li>GL_ARB_draw_buffers_blend (gallium)
 <li>GL_ARB_draw_instanced extension (gallium drivers, swrast)
 <li>GL_ARB_instanced_arrays extension (gallium drivers)
-<li>GL_ARB_texture_compression_rgtc (gallium r600, swrast)
-<li>GL_ARB_draw_buffers_blend (gallium)
-<li>GL_EXT_texture_sRGB_decode (gallium drivers, swrast, i965)
+<li>GL_ARB_occlusion_query2 (gallium drivers, swrast)
 <li>GL_ARB_sampler_objects (gallium drivers)
+<li>GL_ARB_texture_compression_rgtc (gallium drivers, swrast)
+<li>GL_ARB_texture_float (gallium)
+<li>GL_EXT_texture_compression_latc (gallium drivers, swrast)
+<li>GL_EXT_texture_compression_rgtc (gallium drivers, swrast)
+<li>GL_EXT_texture_sRGB_decode (gallium drivers, swrast, i965)
+<li>GL_EXT_texture_snorm (gallium drivers)
+<li>GL_ATI_draw_buffers (all drivers)
+<li>GL_ATI_texture_compression_3dc (gallium drivers, swrast)
+<li>GL_ATI_texture_float (gallium)
+<li>GL_NV_texture_barrier (gallium drivers)
 </ul>
 
 
diff --git a/mesalib/src/glsl/glcpp/glcpp-parse.y b/mesalib/src/glsl/glcpp/glcpp-parse.y
index 1f6e67fa0..fdc946780 100644
--- a/mesalib/src/glsl/glcpp/glcpp-parse.y
+++ b/mesalib/src/glsl/glcpp/glcpp-parse.y
@@ -95,16 +95,16 @@ _token_list_append_list (token_list_t *list, token_list_t *tail);
 static int
 _token_list_equal_ignoring_space (token_list_t *a, token_list_t *b);
 
-static active_list_t *
-_active_list_push (active_list_t *list,
-		   const char *identifier,
-		   token_node_t *marker);
+static void
+_parser_active_list_push (glcpp_parser_t *parser,
+			  const char *identifier,
+			  token_node_t *marker);
 
-static active_list_t *
-_active_list_pop (active_list_t *list);
+static void
+_parser_active_list_pop (glcpp_parser_t *parser);
 
-int
-_active_list_contains (active_list_t *list, const char *identifier);
+static int
+_parser_active_list_contains (glcpp_parser_t *parser, const char *identifier);
 
 static void
 _glcpp_parser_expand_if (glcpp_parser_t *parser, int type, token_list_t *list);
@@ -1468,7 +1468,7 @@ _glcpp_parser_expand_node (glcpp_parser_t *parser,
 
 	/* Finally, don't expand this macro if we're already actively
 	 * expanding it, (to avoid infinite recursion). */
-	if (_active_list_contains (parser->active, identifier)) {
+	if (_parser_active_list_contains (parser, identifier)) {
 		/* We change the token type here from IDENTIFIER to
 		 * OTHER to prevent any future expansion of this
 		 * unexpanded token. */
@@ -1498,51 +1498,53 @@ _glcpp_parser_expand_node (glcpp_parser_t *parser,
 	return _glcpp_parser_expand_function (parser, node, last);
 }
 
-/* Push a new identifier onto the active list, returning the new list.
+/* Push a new identifier onto the parser's active list.
  *
  * Here, 'marker' is the token node that appears in the list after the
  * expansion of 'identifier'. That is, when the list iterator begins
- * examinging 'marker', then it is time to pop this node from the
+ * examining 'marker', then it is time to pop this node from the
  * active stack.
  */
-active_list_t *
-_active_list_push (active_list_t *list,
-		   const char *identifier,
-		   token_node_t *marker)
+static void
+_parser_active_list_push (glcpp_parser_t *parser,
+			  const char *identifier,
+			  token_node_t *marker)
 {
 	active_list_t *node;
 
-	node = ralloc (list, active_list_t);
+	node = ralloc (parser->active, active_list_t);
 	node->identifier = ralloc_strdup (node, identifier);
 	node->marker = marker;
-	node->next = list;
+	node->next = parser->active;
 
-	return node;
+	parser->active = node;
 }
 
-active_list_t *
-_active_list_pop (active_list_t *list)
+static void
+_parser_active_list_pop (glcpp_parser_t *parser)
 {
-	active_list_t *node = list;
+	active_list_t *node = parser->active;
 
-	if (node == NULL)
-		return NULL;
+	if (node == NULL) {
+		parser->active = NULL;
+		return;
+	}
 
-	node = list->next;
-	ralloc_free (list);
+	node = parser->active->next;
+	ralloc_free (parser->active);
 
-	return node;
+	parser->active = node;
 }
 
-int
-_active_list_contains (active_list_t *list, const char *identifier)
+static int
+_parser_active_list_contains (glcpp_parser_t *parser, const char *identifier)
 {
 	active_list_t *node;
 
-	if (list == NULL)
+	if (parser->active == NULL)
 		return 0;
 
-	for (node = list; node; node = node->next)
+	for (node = parser->active; node; node = node->next)
 		if (strcmp (node->identifier, identifier) == 0)
 			return 1;
 
@@ -1573,10 +1575,8 @@ _glcpp_parser_expand_token_list (glcpp_parser_t *parser,
 	while (node) {
 
 		while (parser->active && parser->active->marker == node)
-			parser->active = _active_list_pop (parser->active);
+			_parser_active_list_pop (parser);
 
-		/* Find the expansion for node, which will replace all
-		 * nodes from node to last, inclusive. */
 		expansion = _glcpp_parser_expand_node (parser, node, &last);
 		if (expansion) {
 			token_node_t *n;
@@ -1585,12 +1585,12 @@ _glcpp_parser_expand_token_list (glcpp_parser_t *parser,
 				while (parser->active &&
 				       parser->active->marker == n)
 				{
-					parser->active = _active_list_pop (parser->active);
+					_parser_active_list_pop (parser);
 				}
 
-			parser->active = _active_list_push (parser->active,
-							    node->token->value.str,
-							    last->next);
+			_parser_active_list_push (parser,
+						  node->token->value.str,
+						  last->next);
 			
 			/* Splice expansion into list, supporting a
 			 * simple deletion if the expansion is
@@ -1618,7 +1618,7 @@ _glcpp_parser_expand_token_list (glcpp_parser_t *parser,
 	}
 
 	while (parser->active)
-		parser->active = _active_list_pop (parser->active);
+		_parser_active_list_pop (parser);
 
 	list->non_space_tail = list->tail;
 }
diff --git a/mesalib/src/mesa/main/extensions.c b/mesalib/src/mesa/main/extensions.c
index c45265900..8a0ab9615 100644
--- a/mesalib/src/mesa/main/extensions.c
+++ b/mesalib/src/mesa/main/extensions.c
@@ -124,6 +124,7 @@ static const struct extension extension_table[] = {
    { "GL_ARB_texture_env_combine",                 o(ARB_texture_env_combine),                 GL,             2001 },
    { "GL_ARB_texture_env_crossbar",                o(ARB_texture_env_crossbar),                GL,             2001 },
    { "GL_ARB_texture_env_dot3",                    o(ARB_texture_env_dot3),                    GL,             2001 },
+   { "GL_ARB_texture_float",                       o(ARB_texture_float),                       GL,             2004 },
    { "GL_ARB_texture_mirrored_repeat",             o(ARB_texture_mirrored_repeat),             GL,             2001 },
    { "GL_ARB_texture_multisample",                 o(ARB_texture_multisample),                 GL,             2009 },
    { "GL_ARB_texture_non_power_of_two",            o(ARB_texture_non_power_of_two),            GL,             2003 },
@@ -268,6 +269,7 @@ static const struct extension extension_table[] = {
    { "GL_ATI_separate_stencil",                    o(ATI_separate_stencil),                    GL,             2006 },
    { "GL_ATI_texture_compression_3dc",             o(ATI_texture_compression_3dc),             GL,             2004 },
    { "GL_ATI_texture_env_combine3",                o(ATI_texture_env_combine3),                GL,             2002 },
+   { "GL_ATI_texture_float",                       o(ARB_texture_float),                       GL,             2002 },
    { "GL_ATI_texture_mirror_once",                 o(ATI_texture_mirror_once),                 GL,             2006 },
    { "GL_IBM_multimode_draw_arrays",               o(IBM_multimode_draw_arrays),               GL,             1998 },
    { "GL_IBM_rasterpos_clip",                      o(IBM_rasterpos_clip),                      GL,             1996 },
@@ -278,7 +280,6 @@ static const struct extension extension_table[] = {
    { "GL_MESA_texture_array",                      o(MESA_texture_array),                      GL,             2007 },
    { "GL_MESA_texture_signed_rgba",                o(EXT_texture_snorm),                       GL,             2009 },
    { "GL_MESA_window_pos",                         o(ARB_window_pos),                          GL,             2000 },
-   { "GL_MESAX_texture_float",                     o(ARB_texture_float),                       GL,             2009 },
    { "GL_MESA_ycbcr_texture",                      o(MESA_ycbcr_texture),                      GL,             2002 },
    { "GL_NV_blend_square",                         o(NV_blend_square),                         GL,             1999 },
    { "GL_NV_conditional_render",                   o(NV_conditional_render),                   GL,             2008 },
diff --git a/mesalib/src/mesa/main/fbobject.c b/mesalib/src/mesa/main/fbobject.c
index 76493f1a8..1edb310ea 100644
--- a/mesalib/src/mesa/main/fbobject.c
+++ b/mesalib/src/mesa/main/fbobject.c
@@ -1,2496 +1,2526 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.1

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- * Copyright (C) 1999-2009  VMware, Inc.  All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-/*

- * GL_EXT/ARB_framebuffer_object extensions

- *

- * Authors:

- *   Brian Paul

- */

-

-

-#include "buffers.h"

-#include "context.h"

-#include "enums.h"

-#include "fbobject.h"

-#include "formats.h"

-#include "framebuffer.h"

-#include "hash.h"

-#include "macros.h"

-#include "mfeatures.h"

-#include "mtypes.h"

-#include "renderbuffer.h"

-#include "state.h"

-#include "teximage.h"

-#include "texobj.h"

-

-

-/** Set this to 1 to help debug FBO incompleteness problems */

-#define DEBUG_FBO 0

-

-/** Set this to 1 to debug/log glBlitFramebuffer() calls */

-#define DEBUG_BLIT 0

-

-

-/**

- * Notes:

- *

- * None of the GL_EXT_framebuffer_object functions are compiled into

- * display lists.

- */

-

-

-

-/*

- * When glGenRender/FramebuffersEXT() is called we insert pointers to

- * these placeholder objects into the hash table.

- * Later, when the object ID is first bound, we replace the placeholder

- * with the real frame/renderbuffer.

- */

-static struct gl_framebuffer DummyFramebuffer;

-static struct gl_renderbuffer DummyRenderbuffer;

-

-/* We bind this framebuffer when applications pass a NULL

- * drawable/surface in make current. */

-static struct gl_framebuffer IncompleteFramebuffer;

-

-

-#define IS_CUBE_FACE(TARGET) \

-   ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \

-    (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)

-

-

-static void

-delete_dummy_renderbuffer(struct gl_renderbuffer *rb)

-{

-   /* no op */

-}

-

-static void

-delete_dummy_framebuffer(struct gl_framebuffer *fb)

-{

-   /* no op */

-}

-

-

-void

-_mesa_init_fbobjects(struct gl_context *ctx)

-{

-   _glthread_INIT_MUTEX(DummyFramebuffer.Mutex);

-   _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);

-   _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);

-   DummyFramebuffer.Delete = delete_dummy_framebuffer;

-   DummyRenderbuffer.Delete = delete_dummy_renderbuffer;

-   IncompleteFramebuffer.Delete = delete_dummy_framebuffer;

-}

-

-struct gl_framebuffer *

-_mesa_get_incomplete_framebuffer(void)

-{

-   return &IncompleteFramebuffer;

-}

-

-/**

- * Helper routine for getting a gl_renderbuffer.

- */

-struct gl_renderbuffer *

-_mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)

-{

-   struct gl_renderbuffer *rb;

-

-   if (id == 0)

-      return NULL;

-

-   rb = (struct gl_renderbuffer *)

-      _mesa_HashLookup(ctx->Shared->RenderBuffers, id);

-   return rb;

-}

-

-

-/**

- * Helper routine for getting a gl_framebuffer.

- */

-struct gl_framebuffer *

-_mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)

-{

-   struct gl_framebuffer *fb;

-

-   if (id == 0)

-      return NULL;

-

-   fb = (struct gl_framebuffer *)

-      _mesa_HashLookup(ctx->Shared->FrameBuffers, id);

-   return fb;

-}

-

-

-/**

- * Mark the given framebuffer as invalid.  This will force the

- * test for framebuffer completeness to be done before the framebuffer

- * is used.

- */

-static void

-invalidate_framebuffer(struct gl_framebuffer *fb)

-{

-   fb->_Status = 0; /* "indeterminate" */

-}

-

-

-/**

- * Return the gl_framebuffer object which corresponds to the given

- * framebuffer target, such as GL_DRAW_FRAMEBUFFER.

- * Check support for GL_EXT_framebuffer_blit to determine if certain

- * targets are legal.

- * \return gl_framebuffer pointer or NULL if target is illegal

- */

-static struct gl_framebuffer *

-get_framebuffer_target(struct gl_context *ctx, GLenum target)

-{

-   switch (target) {

-   case GL_DRAW_FRAMEBUFFER:

-      return ctx->Extensions.EXT_framebuffer_blit ? ctx->DrawBuffer : NULL;

-   case GL_READ_FRAMEBUFFER:

-      return ctx->Extensions.EXT_framebuffer_blit ? ctx->ReadBuffer : NULL;

-   case GL_FRAMEBUFFER_EXT:

-      return ctx->DrawBuffer;

-   default:

-      return NULL;

-   }

-}

-

-

-/**

- * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding

- * gl_renderbuffer_attachment object.

- * This function is only used for user-created FB objects, not the

- * default / window-system FB object.

- * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to

- * the depth buffer attachment point.

- */

-struct gl_renderbuffer_attachment *

-_mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,

-                     GLenum attachment)

-{

-   GLuint i;

-

-   assert(fb->Name > 0);

-

-   switch (attachment) {

-   case GL_COLOR_ATTACHMENT0_EXT:

-   case GL_COLOR_ATTACHMENT1_EXT:

-   case GL_COLOR_ATTACHMENT2_EXT:

-   case GL_COLOR_ATTACHMENT3_EXT:

-   case GL_COLOR_ATTACHMENT4_EXT:

-   case GL_COLOR_ATTACHMENT5_EXT:

-   case GL_COLOR_ATTACHMENT6_EXT:

-   case GL_COLOR_ATTACHMENT7_EXT:

-   case GL_COLOR_ATTACHMENT8_EXT:

-   case GL_COLOR_ATTACHMENT9_EXT:

-   case GL_COLOR_ATTACHMENT10_EXT:

-   case GL_COLOR_ATTACHMENT11_EXT:

-   case GL_COLOR_ATTACHMENT12_EXT:

-   case GL_COLOR_ATTACHMENT13_EXT:

-   case GL_COLOR_ATTACHMENT14_EXT:

-   case GL_COLOR_ATTACHMENT15_EXT:

-      i = attachment - GL_COLOR_ATTACHMENT0_EXT;

-      if (i >= ctx->Const.MaxColorAttachments) {

-	 return NULL;

-      }

-      return &fb->Attachment[BUFFER_COLOR0 + i];

-   case GL_DEPTH_STENCIL_ATTACHMENT:

-      /* fall-through */

-   case GL_DEPTH_BUFFER:

-      /* fall-through / new in GL 3.0 */

-   case GL_DEPTH_ATTACHMENT_EXT:

-      return &fb->Attachment[BUFFER_DEPTH];

-   case GL_STENCIL_BUFFER:

-      /* fall-through / new in GL 3.0 */

-   case GL_STENCIL_ATTACHMENT_EXT:

-      return &fb->Attachment[BUFFER_STENCIL];

-   default:

-      return NULL;

-   }

-}

-

-

-/**

- * As above, but only used for getting attachments of the default /

- * window-system framebuffer (not user-created framebuffer objects).

- */

-static struct gl_renderbuffer_attachment *

-_mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,

-                         GLenum attachment)

-{

-   assert(fb->Name == 0);

-

-   switch (attachment) {

-   case GL_FRONT_LEFT:

-      return &fb->Attachment[BUFFER_FRONT_LEFT];

-   case GL_FRONT_RIGHT:

-      return &fb->Attachment[BUFFER_FRONT_RIGHT];

-   case GL_BACK_LEFT:

-      return &fb->Attachment[BUFFER_BACK_LEFT];

-   case GL_BACK_RIGHT:

-      return &fb->Attachment[BUFFER_BACK_RIGHT];

-   case GL_AUX0:

-      if (fb->Visual.numAuxBuffers == 1) {

-         return &fb->Attachment[BUFFER_AUX0];

-      }

-      return NULL;

-   case GL_DEPTH_BUFFER:

-      /* fall-through / new in GL 3.0 */

-   case GL_DEPTH_ATTACHMENT_EXT:

-      return &fb->Attachment[BUFFER_DEPTH];

-   case GL_STENCIL_BUFFER:

-      /* fall-through / new in GL 3.0 */

-   case GL_STENCIL_ATTACHMENT_EXT:

-      return &fb->Attachment[BUFFER_STENCIL];

-   default:

-      return NULL;

-   }

-}

-

-

-

-/**

- * Remove any texture or renderbuffer attached to the given attachment

- * point.  Update reference counts, etc.

- */

-void

-_mesa_remove_attachment(struct gl_context *ctx,

-                        struct gl_renderbuffer_attachment *att)

-{

-   if (att->Type == GL_TEXTURE) {

-      ASSERT(att->Texture);

-      if (ctx->Driver.FinishRenderTexture) {

-         /* tell driver that we're done rendering to this texture. */

-         ctx->Driver.FinishRenderTexture(ctx, att);

-      }

-      _mesa_reference_texobj(&att->Texture, NULL); /* unbind */

-      ASSERT(!att->Texture);

-   }

-   if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {

-      ASSERT(!att->Texture);

-      _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */

-      ASSERT(!att->Renderbuffer);

-   }

-   att->Type = GL_NONE;

-   att->Complete = GL_TRUE;

-}

-

-

-/**

- * Bind a texture object to an attachment point.

- * The previous binding, if any, will be removed first.

- */

-void

-_mesa_set_texture_attachment(struct gl_context *ctx,

-                             struct gl_framebuffer *fb,

-                             struct gl_renderbuffer_attachment *att,

-                             struct gl_texture_object *texObj,

-                             GLenum texTarget, GLuint level, GLuint zoffset)

-{

-   if (att->Texture == texObj) {

-      /* re-attaching same texture */

-      ASSERT(att->Type == GL_TEXTURE);

-      if (ctx->Driver.FinishRenderTexture)

-	 ctx->Driver.FinishRenderTexture(ctx, att);

-   }

-   else {

-      /* new attachment */

-      if (ctx->Driver.FinishRenderTexture && att->Texture)

-	 ctx->Driver.FinishRenderTexture(ctx, att);

-      _mesa_remove_attachment(ctx, att);

-      att->Type = GL_TEXTURE;

-      assert(!att->Texture);

-      _mesa_reference_texobj(&att->Texture, texObj);

-   }

-

-   /* always update these fields */

-   att->TextureLevel = level;

-   att->CubeMapFace = _mesa_tex_target_to_face(texTarget);

-   att->Zoffset = zoffset;

-   att->Complete = GL_FALSE;

-

-   if (_mesa_get_attachment_teximage(att)) {

-      ctx->Driver.RenderTexture(ctx, fb, att);

-   }

-

-   invalidate_framebuffer(fb);

-}

-

-

-/**

- * Bind a renderbuffer to an attachment point.

- * The previous binding, if any, will be removed first.

- */

-void

-_mesa_set_renderbuffer_attachment(struct gl_context *ctx,

-                                  struct gl_renderbuffer_attachment *att,

-                                  struct gl_renderbuffer *rb)

-{

-   /* XXX check if re-doing same attachment, exit early */

-   _mesa_remove_attachment(ctx, att);

-   att->Type = GL_RENDERBUFFER_EXT;

-   att->Texture = NULL; /* just to be safe */

-   att->Complete = GL_FALSE;

-   _mesa_reference_renderbuffer(&att->Renderbuffer, rb);

-}

-

-

-/**

- * Fallback for ctx->Driver.FramebufferRenderbuffer()

- * Attach a renderbuffer object to a framebuffer object.

- */

-void

-_mesa_framebuffer_renderbuffer(struct gl_context *ctx,

-                               struct gl_framebuffer *fb,

-                               GLenum attachment, struct gl_renderbuffer *rb)

-{

-   struct gl_renderbuffer_attachment *att;

-

-   _glthread_LOCK_MUTEX(fb->Mutex);

-

-   att = _mesa_get_attachment(ctx, fb, attachment);

-   ASSERT(att);

-   if (rb) {

-      _mesa_set_renderbuffer_attachment(ctx, att, rb);

-      if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {

-         /* do stencil attachment here (depth already done above) */

-         att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);

-         assert(att);

-         _mesa_set_renderbuffer_attachment(ctx, att, rb);

-      }

-      rb->AttachedAnytime = GL_TRUE;

-   }

-   else {

-      _mesa_remove_attachment(ctx, att);

-   }

-

-   invalidate_framebuffer(fb);

-

-   _glthread_UNLOCK_MUTEX(fb->Mutex);

-}

-

-

-/**

- * Fallback for ctx->Driver.ValidateFramebuffer()

- * Check if the renderbuffer's formats are supported by the software

- * renderer.

- * Drivers should probably override this.

- */

-void

-_mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)

-{

-   gl_buffer_index buf;

-   for (buf = 0; buf < BUFFER_COUNT; buf++) {

-      const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;

-      if (rb) {

-         switch (rb->_BaseFormat) {

-         case GL_ALPHA:

-         case GL_LUMINANCE_ALPHA:

-         case GL_LUMINANCE:

-         case GL_INTENSITY:

-         case GL_RED:

-         case GL_RG:

-            fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;

-            return;

-         default:

-            /* render buffer format is supported by software rendering */

-            ;

-         }

-      }

-   }

-}

-

-

-/**

- * For debug only.

- */

-static void

-att_incomplete(const char *msg)

-{

-#if DEBUG_FBO

-   _mesa_debug(NULL, "attachment incomplete: %s\n", msg);

-#else

-   (void) msg;

-#endif

-}

-

-

-/**

- * For debug only.

- */

-static void

-fbo_incomplete(const char *msg, int index)

-{

-#if DEBUG_FBO

-   _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);

-#else

-   (void) msg;

-   (void) index;

-#endif

-}

-

-

-/**

- * Is the given base format a legal format for a color renderbuffer?

- */

-GLboolean

-_mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)

-{

-   switch (baseFormat) {

-   case GL_RGB:

-   case GL_RGBA:

-      return GL_TRUE;

-   case GL_LUMINANCE:

-   case GL_LUMINANCE_ALPHA:

-   case GL_INTENSITY:

-   case GL_ALPHA:

-      return ctx->Extensions.ARB_framebuffer_object;

-   case GL_RED:

-   case GL_RG:

-      return ctx->Extensions.ARB_texture_rg;

-   default:

-      return GL_FALSE;

-   }

-}

-

-

-/**

- * Is the given base format a legal format for a depth/stencil renderbuffer?

- */

-static GLboolean

-is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)

-{

-   switch (baseFormat) {

-   case GL_DEPTH_COMPONENT:

-   case GL_DEPTH_STENCIL_EXT:

-      return GL_TRUE;

-   default:

-      return GL_FALSE;

-   }

-}

-

-

-/**

- * Test if an attachment point is complete and update its Complete field.

- * \param format if GL_COLOR, this is a color attachment point,

- *               if GL_DEPTH, this is a depth component attachment point,

- *               if GL_STENCIL, this is a stencil component attachment point.

- */

-static void

-test_attachment_completeness(const struct gl_context *ctx, GLenum format,

-                             struct gl_renderbuffer_attachment *att)

-{

-   assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);

-

-   /* assume complete */

-   att->Complete = GL_TRUE;

-

-   /* Look for reasons why the attachment might be incomplete */

-   if (att->Type == GL_TEXTURE) {

-      const struct gl_texture_object *texObj = att->Texture;

-      struct gl_texture_image *texImage;

-      GLenum baseFormat;

-

-      if (!texObj) {

-         att_incomplete("no texobj");

-         att->Complete = GL_FALSE;

-         return;

-      }

-

-      texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];

-      if (!texImage) {

-         att_incomplete("no teximage");

-         att->Complete = GL_FALSE;

-         return;

-      }

-      if (texImage->Width < 1 || texImage->Height < 1) {

-         att_incomplete("teximage width/height=0");

-         printf("texobj = %u\n", texObj->Name);

-         printf("level = %d\n", att->TextureLevel);

-         att->Complete = GL_FALSE;

-         return;

-      }

-      if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {

-         att_incomplete("bad z offset");

-         att->Complete = GL_FALSE;

-         return;

-      }

-

-      baseFormat = _mesa_get_format_base_format(texImage->TexFormat);

-

-      if (format == GL_COLOR) {

-         if (!_mesa_is_legal_color_format(ctx, baseFormat)) {

-            att_incomplete("bad format");

-            att->Complete = GL_FALSE;

-            return;

-         }

-         if (_mesa_is_format_compressed(texImage->TexFormat)) {

-            att_incomplete("compressed internalformat");

-            att->Complete = GL_FALSE;

-            return;

-         }

-      }

-      else if (format == GL_DEPTH) {

-         if (baseFormat == GL_DEPTH_COMPONENT) {

-            /* OK */

-         }

-         else if (ctx->Extensions.EXT_packed_depth_stencil &&

-                  ctx->Extensions.ARB_depth_texture &&

-                  baseFormat == GL_DEPTH_STENCIL_EXT) {

-            /* OK */

-         }

-         else {

-            att->Complete = GL_FALSE;

-            att_incomplete("bad depth format");

-            return;

-         }

-      }

-      else {

-         ASSERT(format == GL_STENCIL);

-         if (ctx->Extensions.EXT_packed_depth_stencil &&

-             ctx->Extensions.ARB_depth_texture &&

-             baseFormat == GL_DEPTH_STENCIL_EXT) {

-            /* OK */

-         }

-         else {

-            /* no such thing as stencil-only textures */

-            att_incomplete("illegal stencil texture");

-            att->Complete = GL_FALSE;

-            return;

-         }

-      }

-   }

-   else if (att->Type == GL_RENDERBUFFER_EXT) {

-      const GLenum baseFormat =

-         _mesa_get_format_base_format(att->Renderbuffer->Format);

-

-      ASSERT(att->Renderbuffer);

-      if (!att->Renderbuffer->InternalFormat ||

-          att->Renderbuffer->Width < 1 ||

-          att->Renderbuffer->Height < 1) {

-         att_incomplete("0x0 renderbuffer");

-         att->Complete = GL_FALSE;

-         return;

-      }

-      if (format == GL_COLOR) {

-         if (!_mesa_is_legal_color_format(ctx, baseFormat)) {

-            att_incomplete("bad renderbuffer color format");

-            att->Complete = GL_FALSE;

-            return;

-         }

-      }

-      else if (format == GL_DEPTH) {

-         if (baseFormat == GL_DEPTH_COMPONENT) {

-            /* OK */

-         }

-         else if (ctx->Extensions.EXT_packed_depth_stencil &&

-                  baseFormat == GL_DEPTH_STENCIL_EXT) {

-            /* OK */

-         }

-         else {

-            att_incomplete("bad renderbuffer depth format");

-            att->Complete = GL_FALSE;

-            return;

-         }

-      }

-      else {

-         assert(format == GL_STENCIL);

-         if (baseFormat == GL_STENCIL_INDEX) {

-            /* OK */

-         }

-         else if (ctx->Extensions.EXT_packed_depth_stencil &&

-                  baseFormat == GL_DEPTH_STENCIL_EXT) {

-            /* OK */

-         }

-         else {

-            att->Complete = GL_FALSE;

-            att_incomplete("bad renderbuffer stencil format");

-            return;

-         }

-      }

-   }

-   else {

-      ASSERT(att->Type == GL_NONE);

-      /* complete */

-      return;

-   }

-}

-

-

-/**

- * Test if the given framebuffer object is complete and update its

- * Status field with the results.

- * Calls the ctx->Driver.ValidateFramebuffer() function to allow the

- * driver to make hardware-specific validation/completeness checks.

- * Also update the framebuffer's Width and Height fields if the

- * framebuffer is complete.

- */

-void

-_mesa_test_framebuffer_completeness(struct gl_context *ctx,

-                                    struct gl_framebuffer *fb)

-{

-   GLuint numImages;

-   GLenum intFormat = GL_NONE; /* color buffers' internal format */

-   GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;

-   GLint numSamples = -1;

-   GLint i;

-   GLuint j;

-

-   assert(fb->Name != 0);

-

-   numImages = 0;

-   fb->Width = 0;

-   fb->Height = 0;

-

-   /* Start at -2 to more easily loop over all attachment points.

-    *  -2: depth buffer

-    *  -1: stencil buffer

-    * >=0: color buffer

-    */

-   for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {

-      struct gl_renderbuffer_attachment *att;

-      GLenum f;

-      gl_format attFormat;

-

-      /*

-       * XXX for ARB_fbo, only check color buffers that are named by

-       * GL_READ_BUFFER and GL_DRAW_BUFFERi.

-       */

-

-      /* check for attachment completeness

-       */

-      if (i == -2) {

-         att = &fb->Attachment[BUFFER_DEPTH];

-         test_attachment_completeness(ctx, GL_DEPTH, att);

-         if (!att->Complete) {

-            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;

-            fbo_incomplete("depth attachment incomplete", -1);

-            return;

-         }

-      }

-      else if (i == -1) {

-         att = &fb->Attachment[BUFFER_STENCIL];

-         test_attachment_completeness(ctx, GL_STENCIL, att);

-         if (!att->Complete) {

-            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;

-            fbo_incomplete("stencil attachment incomplete", -1);

-            return;

-         }

-      }

-      else {

-         att = &fb->Attachment[BUFFER_COLOR0 + i];

-         test_attachment_completeness(ctx, GL_COLOR, att);

-         if (!att->Complete) {

-            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;

-            fbo_incomplete("color attachment incomplete", i);

-            return;

-         }

-      }

-

-      /* get width, height, format of the renderbuffer/texture

-       */

-      if (att->Type == GL_TEXTURE) {

-         const struct gl_texture_image *texImg =

-            _mesa_get_attachment_teximage(att);

-         minWidth = MIN2(minWidth, texImg->Width);

-         maxWidth = MAX2(maxWidth, texImg->Width);

-         minHeight = MIN2(minHeight, texImg->Height);

-         maxHeight = MAX2(maxHeight, texImg->Height);

-         f = texImg->_BaseFormat;

-         attFormat = texImg->TexFormat;

-         numImages++;

-         if (!_mesa_is_legal_color_format(ctx, f) &&

-             !is_legal_depth_format(ctx, f)) {

-            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;

-            fbo_incomplete("texture attachment incomplete", -1);

-            return;

-         }

-      }

-      else if (att->Type == GL_RENDERBUFFER_EXT) {

-         minWidth = MIN2(minWidth, att->Renderbuffer->Width);

-         maxWidth = MAX2(minWidth, att->Renderbuffer->Width);

-         minHeight = MIN2(minHeight, att->Renderbuffer->Height);

-         maxHeight = MAX2(minHeight, att->Renderbuffer->Height);

-         f = att->Renderbuffer->InternalFormat;

-         attFormat = att->Renderbuffer->Format;

-         numImages++;

-      }

-      else {

-         assert(att->Type == GL_NONE);

-         continue;

-      }

-

-      if (att->Renderbuffer && numSamples < 0) {

-         /* first buffer */

-         numSamples = att->Renderbuffer->NumSamples;

-      }

-

-      /* check if integer color */

-      fb->_IntegerColor = _mesa_is_format_integer_color(attFormat);

-

-      /* Error-check width, height, format, samples

-       */

-      if (numImages == 1) {

-         /* save format, num samples */

-         if (i >= 0) {

-            intFormat = f;

-         }

-      }

-      else {

-         if (!ctx->Extensions.ARB_framebuffer_object) {

-            /* check that width, height, format are same */

-            if (minWidth != maxWidth || minHeight != maxHeight) {

-               fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;

-               fbo_incomplete("width or height mismatch", -1);

-               return;

-            }

-            /* check that all color buffer have same format */

-            if (intFormat != GL_NONE && f != intFormat) {

-               fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;

-               fbo_incomplete("format mismatch", -1);

-               return;

-            }

-         }

-         if (att->Renderbuffer &&

-             att->Renderbuffer->NumSamples != numSamples) {

-            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;

-            fbo_incomplete("inconsistant number of samples", i);

-            return;

-         }            

-

-      }

-   }

-

-#if FEATURE_GL

-   if (ctx->API == API_OPENGL) {

-      /* Check that all DrawBuffers are present */

-      for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {

-	 if (fb->ColorDrawBuffer[j] != GL_NONE) {

-	    const struct gl_renderbuffer_attachment *att

-	       = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);

-	    assert(att);

-	    if (att->Type == GL_NONE) {

-	       fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;

-	       fbo_incomplete("missing drawbuffer", j);

-	       return;

-	    }

-	 }

-      }

-

-      /* Check that the ReadBuffer is present */

-      if (fb->ColorReadBuffer != GL_NONE) {

-	 const struct gl_renderbuffer_attachment *att

-	    = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);

-	 assert(att);

-	 if (att->Type == GL_NONE) {

-	    fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;

-            fbo_incomplete("missing readbuffer", -1);

-	    return;

-	 }

-      }

-   }

-#else

-   (void) j;

-#endif

-

-   if (numImages == 0) {

-      fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;

-      fbo_incomplete("no attachments", -1);

-      return;

-   }

-

-   /* Provisionally set status = COMPLETE ... */

-   fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;

-

-   /* ... but the driver may say the FB is incomplete.

-    * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED

-    * if anything.

-    */

-   if (ctx->Driver.ValidateFramebuffer) {

-      ctx->Driver.ValidateFramebuffer(ctx, fb);

-      if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-         fbo_incomplete("driver marked FBO as incomplete", -1);

-      }

-   }

-

-   if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {

-      /*

-       * Note that if ARB_framebuffer_object is supported and the attached

-       * renderbuffers/textures are different sizes, the framebuffer

-       * width/height will be set to the smallest width/height.

-       */

-      fb->Width = minWidth;

-      fb->Height = minHeight;

-

-      /* finally, update the visual info for the framebuffer */

-      _mesa_update_framebuffer_visual(ctx, fb);

-   }

-}

-

-

-GLboolean GLAPIENTRY

-_mesa_IsRenderbufferEXT(GLuint renderbuffer)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);

-   if (renderbuffer) {

-      struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);

-      if (rb != NULL && rb != &DummyRenderbuffer)

-         return GL_TRUE;

-   }

-   return GL_FALSE;

-}

-

-

-void GLAPIENTRY

-_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)

-{

-   struct gl_renderbuffer *newRb;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (target != GL_RENDERBUFFER_EXT) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");

-      return;

-   }

-

-   /* No need to flush here since the render buffer binding has no

-    * effect on rendering state.

-    */

-

-   if (renderbuffer) {

-      newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);

-      if (newRb == &DummyRenderbuffer) {

-         /* ID was reserved, but no real renderbuffer object made yet */

-         newRb = NULL;

-      }

-      else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {

-         /* All RB IDs must be Gen'd */

-         _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");

-         return;

-      }

-

-      if (!newRb) {

-	 /* create new renderbuffer object */

-	 newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);

-	 if (!newRb) {

-	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");

-	    return;

-	 }

-         ASSERT(newRb->AllocStorage);

-         _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);

-         newRb->RefCount = 1; /* referenced by hash table */

-      }

-   }

-   else {

-      newRb = NULL;

-   }

-

-   ASSERT(newRb != &DummyRenderbuffer);

-

-   _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);

-}

-

-

-/**

- * If the given renderbuffer is anywhere attached to the framebuffer, detach

- * the renderbuffer.

- * This is used when a renderbuffer object is deleted.

- * The spec calls for unbinding.

- */

-static void

-detach_renderbuffer(struct gl_context *ctx,

-                    struct gl_framebuffer *fb,

-                    struct gl_renderbuffer *rb)

-{

-   GLuint i;

-   for (i = 0; i < BUFFER_COUNT; i++) {

-      if (fb->Attachment[i].Renderbuffer == rb) {

-         _mesa_remove_attachment(ctx, &fb->Attachment[i]);

-      }

-   }

-   invalidate_framebuffer(fb);

-}

-

-

-void GLAPIENTRY

-_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)

-{

-   GLint i;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   for (i = 0; i < n; i++) {

-      if (renderbuffers[i] > 0) {

-	 struct gl_renderbuffer *rb;

-	 rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);

-	 if (rb) {

-            /* check if deleting currently bound renderbuffer object */

-            if (rb == ctx->CurrentRenderbuffer) {

-               /* bind default */

-               ASSERT(rb->RefCount >= 2);

-               _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);

-            }

-

-            if (ctx->DrawBuffer->Name) {

-               detach_renderbuffer(ctx, ctx->DrawBuffer, rb);

-            }

-            if (ctx->ReadBuffer->Name && ctx->ReadBuffer != ctx->DrawBuffer) {

-               detach_renderbuffer(ctx, ctx->ReadBuffer, rb);

-            }

-

-	    /* Remove from hash table immediately, to free the ID.

-             * But the object will not be freed until it's no longer

-             * referenced anywhere else.

-             */

-	    _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);

-

-            if (rb != &DummyRenderbuffer) {

-               /* no longer referenced by hash table */

-               _mesa_reference_renderbuffer(&rb, NULL);

-	    }

-	 }

-      }

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLuint first;

-   GLint i;

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (n < 0) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");

-      return;

-   }

-

-   if (!renderbuffers)

-      return;

-

-   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);

-

-   for (i = 0; i < n; i++) {

-      GLuint name = first + i;

-      renderbuffers[i] = name;

-      /* insert dummy placeholder into hash table */

-      _glthread_LOCK_MUTEX(ctx->Shared->Mutex);

-      _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);

-      _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);

-   }

-}

-

-

-/**

- * Given an internal format token for a render buffer, return the

- * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,

- * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,

- * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).

- *

- * This is similar to _mesa_base_tex_format() but the set of valid

- * internal formats is different.

- *

- * Note that even if a format is determined to be legal here, validation

- * of the FBO may fail if the format is not supported by the driver/GPU.

- *

- * \param internalFormat  as passed to glRenderbufferStorage()

- * \return the base internal format, or 0 if internalFormat is illegal

- */

-GLenum

-_mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)

-{

-   /*

-    * Notes: some formats such as alpha, luminance, etc. were added

-    * with GL_ARB_framebuffer_object.

-    */

-   switch (internalFormat) {

-   case GL_ALPHA:

-   case GL_ALPHA4:

-   case GL_ALPHA8:

-   case GL_ALPHA12:

-   case GL_ALPHA16:

-      return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;

-   case GL_LUMINANCE:

-   case GL_LUMINANCE4:

-   case GL_LUMINANCE8:

-   case GL_LUMINANCE12:

-   case GL_LUMINANCE16:

-      return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;

-   case GL_LUMINANCE_ALPHA:

-   case GL_LUMINANCE4_ALPHA4:

-   case GL_LUMINANCE6_ALPHA2:

-   case GL_LUMINANCE8_ALPHA8:

-   case GL_LUMINANCE12_ALPHA4:

-   case GL_LUMINANCE12_ALPHA12:

-   case GL_LUMINANCE16_ALPHA16:

-      return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;

-   case GL_INTENSITY:

-   case GL_INTENSITY4:

-   case GL_INTENSITY8:

-   case GL_INTENSITY12:

-   case GL_INTENSITY16:

-      return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;

-   case GL_RGB:

-   case GL_R3_G3_B2:

-   case GL_RGB4:

-   case GL_RGB5:

-   case GL_RGB8:

-   case GL_RGB10:

-   case GL_RGB12:

-   case GL_RGB16:

-   case GL_SRGB8_EXT:

-      return GL_RGB;

-   case GL_RGBA:

-   case GL_RGBA2:

-   case GL_RGBA4:

-   case GL_RGB5_A1:

-   case GL_RGBA8:

-   case GL_RGB10_A2:

-   case GL_RGBA12:

-   case GL_RGBA16:

-   case GL_SRGB8_ALPHA8_EXT:

-      return GL_RGBA;

-   case GL_STENCIL_INDEX:

-   case GL_STENCIL_INDEX1_EXT:

-   case GL_STENCIL_INDEX4_EXT:

-   case GL_STENCIL_INDEX8_EXT:

-   case GL_STENCIL_INDEX16_EXT:

-      return GL_STENCIL_INDEX;

-   case GL_DEPTH_COMPONENT:

-   case GL_DEPTH_COMPONENT16:

-   case GL_DEPTH_COMPONENT24:

-   case GL_DEPTH_COMPONENT32:

-      return GL_DEPTH_COMPONENT;

-   case GL_DEPTH_STENCIL_EXT:

-   case GL_DEPTH24_STENCIL8_EXT:

-      if (ctx->Extensions.EXT_packed_depth_stencil)

-         return GL_DEPTH_STENCIL_EXT;

-      else

-         return 0;

-   case GL_RED:

-   case GL_R8:

-   case GL_R16:

-      return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;

-   case GL_RG:

-   case GL_RG8:

-   case GL_RG16:

-      return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;

-   /* signed normalized texture formats */

-   case GL_RED_SNORM:

-   case GL_R8_SNORM:

-   case GL_R16_SNORM:

-      return ctx->Extensions.EXT_texture_snorm ? GL_RED : 0;

-   case GL_RG_SNORM:

-   case GL_RG8_SNORM:

-   case GL_RG16_SNORM:

-      return ctx->Extensions.EXT_texture_snorm ? GL_RG : 0;

-   case GL_RGB_SNORM:

-   case GL_RGB8_SNORM:

-   case GL_RGB16_SNORM:

-      return ctx->Extensions.EXT_texture_snorm ? GL_RGB : 0;

-   case GL_RGBA_SNORM:

-   case GL_RGBA8_SNORM:

-   case GL_RGBA16_SNORM:

-      return ctx->Extensions.EXT_texture_snorm ? GL_RGBA : 0;

-   case GL_ALPHA_SNORM:

-   case GL_ALPHA8_SNORM:

-   case GL_ALPHA16_SNORM:

-      return ctx->Extensions.EXT_texture_snorm &&

-             ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;

-   case GL_LUMINANCE_SNORM:

-   case GL_LUMINANCE8_SNORM:

-   case GL_LUMINANCE16_SNORM:

-      return ctx->Extensions.EXT_texture_snorm &&

-             ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;

-   case GL_LUMINANCE_ALPHA_SNORM:

-   case GL_LUMINANCE8_ALPHA8_SNORM:

-   case GL_LUMINANCE16_ALPHA16_SNORM:

-      return ctx->Extensions.EXT_texture_snorm &&

-             ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;

-   case GL_INTENSITY_SNORM:

-   case GL_INTENSITY8_SNORM:

-   case GL_INTENSITY16_SNORM:

-      return ctx->Extensions.EXT_texture_snorm &&

-             ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;

-   /* XXX add floating point and integer formats eventually */

-   default:

-      return 0;

-   }

-}

-

-

-/**

- * Invalidate a renderbuffer attachment.  Called from _mesa_HashWalk().

- */

-static void

-invalidate_rb(GLuint key, void *data, void *userData)

-{

-   struct gl_framebuffer *fb = (struct gl_framebuffer *) data;

-   struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData;

-

-   /* If this is a user-created FBO */

-   if (fb->Name) {

-      GLuint i;

-      for (i = 0; i < BUFFER_COUNT; i++) {

-         struct gl_renderbuffer_attachment *att = fb->Attachment + i;

-         if (att->Type == GL_RENDERBUFFER &&

-             att->Renderbuffer == rb) {

-            /* Mark fb status as indeterminate to force re-validation */

-            fb->_Status = 0;

-            return;

-         }

-      }

-   }

-}

-

-

-/** sentinal value, see below */

-#define NO_SAMPLES 1000

-

-

-/**

- * Helper function used by _mesa_RenderbufferStorageEXT() and 

- * _mesa_RenderbufferStorageMultisample().

- * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().

- */

-static void

-renderbuffer_storage(GLenum target, GLenum internalFormat,

-                     GLsizei width, GLsizei height, GLsizei samples)

-{

-   const char *func = samples == NO_SAMPLES ?

-      "glRenderbufferStorage" : "RenderbufferStorageMultisample";

-   struct gl_renderbuffer *rb;

-   GLenum baseFormat;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (target != GL_RENDERBUFFER_EXT) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);

-      return;

-   }

-

-   baseFormat = _mesa_base_fbo_format(ctx, internalFormat);

-   if (baseFormat == 0) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);

-      return;

-   }

-

-   if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);

-      return;

-   }

-

-   if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);

-      return;

-   }

-

-   if (samples == NO_SAMPLES) {

-      /* NumSamples == 0 indicates non-multisampling */

-      samples = 0;

-   }

-   else if (samples > (GLsizei) ctx->Const.MaxSamples) {

-      /* note: driver may choose to use more samples than what's requested */

-      _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);

-      return;

-   }

-

-   rb = ctx->CurrentRenderbuffer;

-   if (!rb) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);

-      return;

-   }

-

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   if (rb->InternalFormat == internalFormat &&

-       rb->Width == (GLuint) width &&

-       rb->Height == (GLuint) height) {

-      /* no change in allocation needed */

-      return;

-   }

-

-   /* These MUST get set by the AllocStorage func */

-   rb->Format = MESA_FORMAT_NONE;

-   rb->NumSamples = samples;

-

-   /* Now allocate the storage */

-   ASSERT(rb->AllocStorage);

-   if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {

-      /* No error - check/set fields now */

-      assert(rb->Format != MESA_FORMAT_NONE);

-      assert(rb->Width == (GLuint) width);

-      assert(rb->Height == (GLuint) height);

-      rb->InternalFormat = internalFormat;

-      rb->_BaseFormat = baseFormat;

-      assert(rb->_BaseFormat != 0);

-   }

-   else {

-      /* Probably ran out of memory - clear the fields */

-      rb->Width = 0;

-      rb->Height = 0;

-      rb->Format = MESA_FORMAT_NONE;

-      rb->InternalFormat = GL_NONE;

-      rb->_BaseFormat = GL_NONE;

-      rb->NumSamples = 0;

-   }

-

-   /* Invalidate the framebuffers the renderbuffer is attached in. */

-   if (rb->AttachedAnytime) {

-      _mesa_HashWalk(ctx->Shared->FrameBuffers, invalidate_rb, rb);

-   }

-}

-

-

-#if FEATURE_OES_EGL_image

-void GLAPIENTRY

-_mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)

-{

-   struct gl_renderbuffer *rb;

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (!ctx->Extensions.OES_EGL_image) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glEGLImageTargetRenderbufferStorageOES(unsupported)");

-      return;

-   }

-

-   if (target != GL_RENDERBUFFER) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "EGLImageTargetRenderbufferStorageOES");

-      return;

-   }

-

-   rb = ctx->CurrentRenderbuffer;

-   if (!rb) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "EGLImageTargetRenderbufferStorageOES");

-      return;

-   }

-

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image);

-}

-#endif

-

-

-/**

- * Helper function for _mesa_GetRenderbufferParameterivEXT() and

- * _mesa_GetFramebufferAttachmentParameterivEXT()

- * We have to be careful to respect the base format.  For example, if a

- * renderbuffer/texture was created with internalFormat=GL_RGB but the

- * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE

- * we need to return zero.

- */

-static GLint

-get_component_bits(GLenum pname, GLenum baseFormat, gl_format format)

-{

-   switch (pname) {

-   case GL_RENDERBUFFER_RED_SIZE_EXT:

-   case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:

-      if (baseFormat == GL_RGB || baseFormat == GL_RGBA ||

-	  baseFormat == GL_RG || baseFormat == GL_RED)

-         return _mesa_get_format_bits(format, pname);

-      else

-         return 0;

-   case GL_RENDERBUFFER_GREEN_SIZE_EXT:

-   case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:

-      if (baseFormat == GL_RGB || baseFormat == GL_RGBA || baseFormat == GL_RG)

-         return _mesa_get_format_bits(format, pname);

-      else

-         return 0;

-   case GL_RENDERBUFFER_BLUE_SIZE_EXT:

-   case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:

-      if (baseFormat == GL_RGB || baseFormat == GL_RGBA)

-         return _mesa_get_format_bits(format, pname);

-      else

-         return 0;

-   case GL_RENDERBUFFER_ALPHA_SIZE_EXT:

-   case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:

-      if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA ||

-	  baseFormat == GL_LUMINANCE_ALPHA)

-         return _mesa_get_format_bits(format, pname);

-      else

-         return 0;

-   case GL_RENDERBUFFER_DEPTH_SIZE_EXT:

-   case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:

-      if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL)

-         return _mesa_get_format_bits(format, pname);

-      else

-         return 0;

-   case GL_RENDERBUFFER_STENCIL_SIZE_EXT:

-   case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:

-      if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL)

-         return _mesa_get_format_bits(format, pname);

-      else

-         return 0;

-   default:

-      return 0;

-   }

-}

-

-

-

-void GLAPIENTRY

-_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,

-                             GLsizei width, GLsizei height)

-{

-   /* GL_ARB_fbo says calling this function is equivalent to calling

-    * glRenderbufferStorageMultisample() with samples=0.  We pass in

-    * a token value here just for error reporting purposes.

-    */

-   renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES);

-}

-

-

-void GLAPIENTRY

-_mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples,

-                                     GLenum internalFormat,

-                                     GLsizei width, GLsizei height)

-{

-   renderbuffer_storage(target, internalFormat, width, height, samples);

-}

-

-

-/**

- * OpenGL ES version of glRenderBufferStorage.

- */

-void GLAPIENTRY

-_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,

-			   GLsizei width, GLsizei height)

-{

-   switch (internalFormat) {

-   case GL_RGB565:

-      /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */

-      /* choose a closest format */

-      internalFormat = GL_RGB5;

-      break;

-   default:

-      break;

-   }

-

-   renderbuffer_storage(target, internalFormat, width, height, 0);

-}

-

-

-void GLAPIENTRY

-_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)

-{

-   struct gl_renderbuffer *rb;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (target != GL_RENDERBUFFER_EXT) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glGetRenderbufferParameterivEXT(target)");

-      return;

-   }

-

-   rb = ctx->CurrentRenderbuffer;

-   if (!rb) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glGetRenderbufferParameterivEXT");

-      return;

-   }

-

-   /* No need to flush here since we're just quering state which is

-    * not effected by rendering.

-    */

-

-   switch (pname) {

-   case GL_RENDERBUFFER_WIDTH_EXT:

-      *params = rb->Width;

-      return;

-   case GL_RENDERBUFFER_HEIGHT_EXT:

-      *params = rb->Height;

-      return;

-   case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:

-      *params = rb->InternalFormat;

-      return;

-   case GL_RENDERBUFFER_RED_SIZE_EXT:

-   case GL_RENDERBUFFER_GREEN_SIZE_EXT:

-   case GL_RENDERBUFFER_BLUE_SIZE_EXT:

-   case GL_RENDERBUFFER_ALPHA_SIZE_EXT:

-   case GL_RENDERBUFFER_DEPTH_SIZE_EXT:

-   case GL_RENDERBUFFER_STENCIL_SIZE_EXT:

-      *params = get_component_bits(pname, rb->_BaseFormat, rb->Format);

-      break;

-   case GL_RENDERBUFFER_SAMPLES:

-      if (ctx->Extensions.ARB_framebuffer_object) {

-         *params = rb->NumSamples;

-         break;

-      }

-      /* fallthrough */

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glGetRenderbufferParameterivEXT(target)");

-      return;

-   }

-}

-

-

-GLboolean GLAPIENTRY

-_mesa_IsFramebufferEXT(GLuint framebuffer)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);

-   if (framebuffer) {

-      struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);

-      if (rb != NULL && rb != &DummyFramebuffer)

-         return GL_TRUE;

-   }

-   return GL_FALSE;

-}

-

-

-/**

- * Check if any of the attachments of the given framebuffer are textures

- * (render to texture).  Call ctx->Driver.RenderTexture() for such

- * attachments.

- */

-static void

-check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)

-{

-   GLuint i;

-   ASSERT(ctx->Driver.RenderTexture);

-

-   if (fb->Name == 0)

-      return; /* can't render to texture with winsys framebuffers */

-

-   for (i = 0; i < BUFFER_COUNT; i++) {

-      struct gl_renderbuffer_attachment *att = fb->Attachment + i;

-      if (att->Texture && _mesa_get_attachment_teximage(att)) {

-         ctx->Driver.RenderTexture(ctx, fb, att);

-      }

-   }

-}

-

-

-/**

- * Examine all the framebuffer's attachments to see if any are textures.

- * If so, call ctx->Driver.FinishRenderTexture() for each texture to

- * notify the device driver that the texture image may have changed.

- */

-static void

-check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)

-{

-   if (fb->Name == 0)

-      return; /* can't render to texture with winsys framebuffers */

-

-   if (ctx->Driver.FinishRenderTexture) {

-      GLuint i;

-      for (i = 0; i < BUFFER_COUNT; i++) {

-         struct gl_renderbuffer_attachment *att = fb->Attachment + i;

-         if (att->Texture && att->Renderbuffer) {

-            ctx->Driver.FinishRenderTexture(ctx, att);

-         }

-      }

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)

-{

-   struct gl_framebuffer *newDrawFb, *newReadFb;

-   struct gl_framebuffer *oldDrawFb, *oldReadFb;

-   GLboolean bindReadBuf, bindDrawBuf;

-   GET_CURRENT_CONTEXT(ctx);

-

-#ifdef DEBUG

-   if (ctx->Extensions.ARB_framebuffer_object) {

-      ASSERT(ctx->Extensions.EXT_framebuffer_object);

-      ASSERT(ctx->Extensions.EXT_framebuffer_blit);

-   }

-#endif

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (!ctx->Extensions.EXT_framebuffer_object) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glBindFramebufferEXT(unsupported)");

-      return;

-   }

-

-   switch (target) {

-#if FEATURE_EXT_framebuffer_blit

-   case GL_DRAW_FRAMEBUFFER_EXT:

-      if (!ctx->Extensions.EXT_framebuffer_blit) {

-         _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");

-         return;

-      }

-      bindDrawBuf = GL_TRUE;

-      bindReadBuf = GL_FALSE;

-      break;

-   case GL_READ_FRAMEBUFFER_EXT:

-      if (!ctx->Extensions.EXT_framebuffer_blit) {

-         _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");

-         return;

-      }

-      bindDrawBuf = GL_FALSE;

-      bindReadBuf = GL_TRUE;

-      break;

-#endif

-   case GL_FRAMEBUFFER_EXT:

-      bindDrawBuf = GL_TRUE;

-      bindReadBuf = GL_TRUE;

-      break;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");

-      return;

-   }

-

-   if (framebuffer) {

-      /* Binding a user-created framebuffer object */

-      newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);

-      if (newDrawFb == &DummyFramebuffer) {

-         /* ID was reserved, but no real framebuffer object made yet */

-         newDrawFb = NULL;

-      }

-      else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {

-         /* All FBO IDs must be Gen'd */

-         _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");

-         return;

-      }

-

-      if (!newDrawFb) {

-	 /* create new framebuffer object */

-	 newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);

-	 if (!newDrawFb) {

-	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");

-	    return;

-	 }

-         _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);

-      }

-      newReadFb = newDrawFb;

-   }

-   else {

-      /* Binding the window system framebuffer (which was originally set

-       * with MakeCurrent).

-       */

-      newDrawFb = ctx->WinSysDrawBuffer;

-      newReadFb = ctx->WinSysReadBuffer;

-   }

-

-   ASSERT(newDrawFb);

-   ASSERT(newDrawFb != &DummyFramebuffer);

-

-   /* save pointers to current/old framebuffers */

-   oldDrawFb = ctx->DrawBuffer;

-   oldReadFb = ctx->ReadBuffer;

-

-   /* check if really changing bindings */

-   if (oldDrawFb == newDrawFb)

-      bindDrawBuf = GL_FALSE;

-   if (oldReadFb == newReadFb)

-      bindReadBuf = GL_FALSE;

-

-   /*

-    * OK, now bind the new Draw/Read framebuffers, if they're changing.

-    *

-    * We also check if we're beginning and/or ending render-to-texture.

-    * When a framebuffer with texture attachments is unbound, call

-    * ctx->Driver.FinishRenderTexture().

-    * When a framebuffer with texture attachments is bound, call

-    * ctx->Driver.RenderTexture().

-    *

-    * Note that if the ReadBuffer has texture attachments we don't consider

-    * that a render-to-texture case.

-    */

-   if (bindReadBuf) {

-      FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-      /* check if old readbuffer was render-to-texture */

-      check_end_texture_render(ctx, oldReadFb);

-

-      _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);

-   }

-

-   if (bindDrawBuf) {

-      FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-      /* check if old read/draw buffers were render-to-texture */

-      if (!bindReadBuf)

-         check_end_texture_render(ctx, oldReadFb);

-

-      if (oldDrawFb != oldReadFb)

-         check_end_texture_render(ctx, oldDrawFb);

-

-      /* check if newly bound framebuffer has any texture attachments */

-      check_begin_texture_render(ctx, newDrawFb);

-

-      _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);

-   }

-

-   if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {

-      ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)

-{

-   GLint i;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   for (i = 0; i < n; i++) {

-      if (framebuffers[i] > 0) {

-	 struct gl_framebuffer *fb;

-	 fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);

-	 if (fb) {

-            ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);

-

-            /* check if deleting currently bound framebuffer object */

-            if (ctx->Extensions.EXT_framebuffer_blit) {

-               /* separate draw/read binding points */

-               if (fb == ctx->DrawBuffer) {

-                  /* bind default */

-                  ASSERT(fb->RefCount >= 2);

-                  _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);

-               }

-               if (fb == ctx->ReadBuffer) {

-                  /* bind default */

-                  ASSERT(fb->RefCount >= 2);

-                  _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);

-               }

-            }

-            else {

-               /* only one binding point for read/draw buffers */

-               if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {

-                  /* bind default */

-                  ASSERT(fb->RefCount >= 2);

-                  _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);

-               }    

-            }

-

-	    /* remove from hash table immediately, to free the ID */

-	    _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);

-

-            if (fb != &DummyFramebuffer) {

-               /* But the object will not be freed until it's no longer

-                * bound in any context.

-                */

-               _mesa_reference_framebuffer(&fb, NULL);

-	    }

-	 }

-      }

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   GLuint first;

-   GLint i;

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   if (n < 0) {

-      _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");

-      return;

-   }

-

-   if (!framebuffers)

-      return;

-

-   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);

-

-   for (i = 0; i < n; i++) {

-      GLuint name = first + i;

-      framebuffers[i] = name;

-      /* insert dummy placeholder into hash table */

-      _glthread_LOCK_MUTEX(ctx->Shared->Mutex);

-      _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);

-      _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);

-   }

-}

-

-

-

-GLenum GLAPIENTRY

-_mesa_CheckFramebufferStatusEXT(GLenum target)

-{

-   struct gl_framebuffer *buffer;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);

-

-   buffer = get_framebuffer_target(ctx, target);

-   if (!buffer) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");

-      return 0;

-   }

-

-   if (buffer->Name == 0) {

-      /* The window system / default framebuffer is always complete */

-      return GL_FRAMEBUFFER_COMPLETE_EXT;

-   }

-

-   /* No need to flush here */

-

-   if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {

-      _mesa_test_framebuffer_completeness(ctx, buffer);

-   }

-

-   return buffer->_Status;

-}

-

-

-

-/**

- * Common code called by glFramebufferTexture1D/2D/3DEXT().

- */

-static void

-framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target, 

-                    GLenum attachment, GLenum textarget, GLuint texture,

-                    GLint level, GLint zoffset)

-{

-   struct gl_renderbuffer_attachment *att;

-   struct gl_texture_object *texObj = NULL;

-   struct gl_framebuffer *fb;

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   fb = get_framebuffer_target(ctx, target);

-   if (!fb) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferTexture%sEXT(target=0x%x)", caller, target);

-      return;

-   }

-

-   /* check framebuffer binding */

-   if (fb->Name == 0) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glFramebufferTexture%sEXT", caller);

-      return;

-   }

-

-

-   /* The textarget, level, and zoffset parameters are only validated if

-    * texture is non-zero.

-    */

-   if (texture) {

-      GLboolean err = GL_TRUE;

-

-      texObj = _mesa_lookup_texture(ctx, texture);

-      if (texObj != NULL) {

-         if (textarget == 0) {

-            /* XXX what's the purpose of this? */

-            err = (texObj->Target != GL_TEXTURE_3D) &&

-                (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&

-                (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);

-         }

-         else {

-            err = (texObj->Target == GL_TEXTURE_CUBE_MAP)

-                ? !IS_CUBE_FACE(textarget)

-                : (texObj->Target != textarget);

-         }

-      }

-      else {

-         /* can't render to a non-existant texture */

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glFramebufferTexture%sEXT(non existant texture)",

-                     caller);

-         return;

-      }

-

-      if (err) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glFramebufferTexture%sEXT(texture target mismatch)",

-                     caller);

-         return;

-      }

-

-      if (texObj->Target == GL_TEXTURE_3D) {

-         const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);

-         if (zoffset < 0 || zoffset >= maxSize) {

-            _mesa_error(ctx, GL_INVALID_VALUE,

-                        "glFramebufferTexture%sEXT(zoffset)", caller);

-            return;

-         }

-      }

-      else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||

-               (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {

-         if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {

-            _mesa_error(ctx, GL_INVALID_VALUE,

-                        "glFramebufferTexture%sEXT(layer)", caller);

-            return;

-         }

-      }

-

-      if ((level < 0) || 

-          (level >= _mesa_max_texture_levels(ctx, texObj->Target))) {

-         _mesa_error(ctx, GL_INVALID_VALUE,

-                     "glFramebufferTexture%sEXT(level)", caller);

-         return;

-      }

-   }

-

-   att = _mesa_get_attachment(ctx, fb, attachment);

-   if (att == NULL) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferTexture%sEXT(attachment)", caller);

-      return;

-   }

-

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   _glthread_LOCK_MUTEX(fb->Mutex);

-   if (texObj) {

-      _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,

-                                   level, zoffset);

-      /* Set the render-to-texture flag.  We'll check this flag in

-       * glTexImage() and friends to determine if we need to revalidate

-       * any FBOs that might be rendering into this texture.

-       * This flag never gets cleared since it's non-trivial to determine

-       * when all FBOs might be done rendering to this texture.  That's OK

-       * though since it's uncommon to render to a texture then repeatedly

-       * call glTexImage() to change images in the texture.

-       */

-      texObj->_RenderToTexture = GL_TRUE;

-   }

-   else {

-      _mesa_remove_attachment(ctx, att);

-   }

-

-   invalidate_framebuffer(fb);

-

-   _glthread_UNLOCK_MUTEX(fb->Mutex);

-}

-

-

-

-void GLAPIENTRY

-_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,

-                              GLenum textarget, GLuint texture, GLint level)

-{

-   GET_CURRENT_CONTEXT(ctx);

-

-   if ((texture != 0) && (textarget != GL_TEXTURE_1D)) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferTexture1DEXT(textarget)");

-      return;

-   }

-

-   framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,

-                       level, 0);

-}

-

-

-void GLAPIENTRY

-_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,

-                              GLenum textarget, GLuint texture, GLint level)

-{

-   GET_CURRENT_CONTEXT(ctx);

-

-   if ((texture != 0) &&

-       (textarget != GL_TEXTURE_2D) &&

-       (textarget != GL_TEXTURE_RECTANGLE_ARB) &&

-       (!IS_CUBE_FACE(textarget))) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glFramebufferTexture2DEXT(textarget=0x%x)", textarget);

-      return;

-   }

-

-   framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,

-                       level, 0);

-}

-

-

-void GLAPIENTRY

-_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,

-                              GLenum textarget, GLuint texture,

-                              GLint level, GLint zoffset)

-{

-   GET_CURRENT_CONTEXT(ctx);

-

-   if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferTexture3DEXT(textarget)");

-      return;

-   }

-

-   framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,

-                       level, zoffset);

-}

-

-

-void GLAPIENTRY

-_mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,

-                                 GLuint texture, GLint level, GLint layer)

-{

-   GET_CURRENT_CONTEXT(ctx);

-

-   framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,

-                       level, layer);

-}

-

-

-void GLAPIENTRY

-_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,

-                                 GLenum renderbufferTarget,

-                                 GLuint renderbuffer)

-{

-   struct gl_renderbuffer_attachment *att;

-   struct gl_framebuffer *fb;

-   struct gl_renderbuffer *rb;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   fb = get_framebuffer_target(ctx, target);

-   if (!fb) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)");

-      return;

-   }

-

-   if (renderbufferTarget != GL_RENDERBUFFER_EXT) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferRenderbufferEXT(renderbufferTarget)");

-      return;

-   }

-

-   if (fb->Name == 0) {

-      /* Can't attach new renderbuffers to a window system framebuffer */

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");

-      return;

-   }

-

-   att = _mesa_get_attachment(ctx, fb, attachment);

-   if (att == NULL) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glFramebufferRenderbufferEXT(invalid attachment %s)",

-                  _mesa_lookup_enum_by_nr(attachment));

-      return;

-   }

-

-   if (renderbuffer) {

-      rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);

-      if (!rb) {

-	 _mesa_error(ctx, GL_INVALID_OPERATION,

-		     "glFramebufferRenderbufferEXT(non-existant"

-                     " renderbuffer %u)", renderbuffer);

-	 return;

-      }

-      else if (rb == &DummyRenderbuffer) {

-         /* This is what NVIDIA does */

-	 _mesa_error(ctx, GL_INVALID_VALUE,

-		     "glFramebufferRenderbufferEXT(renderbuffer %u)",

-                     renderbuffer);

-	 return;

-      }

-   }

-   else {

-      /* remove renderbuffer attachment */

-      rb = NULL;

-   }

-

-   if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&

-       rb && rb->Format != MESA_FORMAT_NONE) {

-      /* make sure the renderbuffer is a depth/stencil format */

-      const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);

-      if (baseFormat != GL_DEPTH_STENCIL) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glFramebufferRenderbufferEXT(renderbuffer"

-                     " is not DEPTH_STENCIL format)");

-         return;

-      }

-   }

-

-

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   assert(ctx->Driver.FramebufferRenderbuffer);

-   ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);

-

-   /* Some subsequent GL commands may depend on the framebuffer's visual

-    * after the binding is updated.  Update visual info now.

-    */

-   _mesa_update_framebuffer_visual(ctx, fb);

-}

-

-

-void GLAPIENTRY

-_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,

-                                             GLenum pname, GLint *params)

-{

-   const struct gl_renderbuffer_attachment *att;

-   struct gl_framebuffer *buffer;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-

-   buffer = get_framebuffer_target(ctx, target);

-   if (!buffer) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glGetFramebufferAttachmentParameterivEXT(target)");

-      return;

-   }

-

-   if (buffer->Name == 0) {

-      /* the default / window-system FBO */

-      att = _mesa_get_fb0_attachment(ctx, buffer, attachment);

-   }

-   else {

-      /* user-created framebuffer FBO */

-      att = _mesa_get_attachment(ctx, buffer, attachment);

-   }

-

-   if (att == NULL) {

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glGetFramebufferAttachmentParameterivEXT(attachment)");

-      return;

-   }

-

-   if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {

-      /* the depth and stencil attachments must point to the same buffer */

-      const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;

-      depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);

-      stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);

-      if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"

-                     " attachments differ)");

-         return;

-      }

-   }

-

-   /* No need to flush here */

-

-   switch (pname) {

-   case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:

-      *params = buffer->Name == 0 ? GL_FRAMEBUFFER_DEFAULT : att->Type;

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:

-      if (att->Type == GL_RENDERBUFFER_EXT) {

-	 *params = att->Renderbuffer->Name;

-      }

-      else if (att->Type == GL_TEXTURE) {

-	 *params = att->Texture->Name;

-      }

-      else {

-         assert(att->Type == GL_NONE);

-         *params = 0;

-      }

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:

-      if (att->Type == GL_TEXTURE) {

-	 *params = att->TextureLevel;

-      }

-      else {

-	 _mesa_error(ctx, GL_INVALID_ENUM,

-		     "glGetFramebufferAttachmentParameterivEXT(pname)");

-      }

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:

-      if (att->Type == GL_TEXTURE) {

-         if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {

-            *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;

-         }

-         else {

-            *params = 0;

-         }

-      }

-      else {

-	 _mesa_error(ctx, GL_INVALID_ENUM,

-		     "glGetFramebufferAttachmentParameterivEXT(pname)");

-      }

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:

-      if (att->Type == GL_TEXTURE) {

-         if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {

-            *params = att->Zoffset;

-         }

-         else {

-            *params = 0;

-         }

-      }

-      else {

-	 _mesa_error(ctx, GL_INVALID_ENUM,

-		     "glGetFramebufferAttachmentParameterivEXT(pname)");

-      }

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:

-      if (!ctx->Extensions.ARB_framebuffer_object) {

-         _mesa_error(ctx, GL_INVALID_ENUM,

-                     "glGetFramebufferAttachmentParameterivEXT(pname)");

-      }

-      else {

-         if (ctx->Extensions.EXT_framebuffer_sRGB && ctx->Const.sRGBCapable) {

-            *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);

-         }

-         else {

-            /* According to ARB_framebuffer_sRGB, we should return LINEAR

-             * if the sRGB conversion is unsupported. */

-            *params = GL_LINEAR;

-         }

-      }

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:

-      if (!ctx->Extensions.ARB_framebuffer_object) {

-         _mesa_error(ctx, GL_INVALID_ENUM,

-                     "glGetFramebufferAttachmentParameterivEXT(pname)");

-         return;

-      }

-      else {

-         gl_format format = att->Renderbuffer->Format;

-         if (format == MESA_FORMAT_CI8 || format == MESA_FORMAT_S8) {

-            /* special cases */

-            *params = GL_INDEX;

-         }

-         else {

-            *params = _mesa_get_format_datatype(format);

-         }

-      }

-      return;

-   case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:

-   case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:

-   case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:

-   case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:

-   case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:

-   case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:

-      if (!ctx->Extensions.ARB_framebuffer_object) {

-         _mesa_error(ctx, GL_INVALID_ENUM,

-                     "glGetFramebufferAttachmentParameterivEXT(pname)");

-      }

-      else if (att->Texture) {

-         const struct gl_texture_image *texImage =

-            _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,

-                                   att->TextureLevel);

-         if (texImage) {

-            *params = get_component_bits(pname, texImage->_BaseFormat,

-                                         texImage->TexFormat);

-         }

-         else {

-            *params = 0;

-         }

-      }

-      else if (att->Renderbuffer) {

-         *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,

-                                      att->Renderbuffer->Format);

-      }

-      else {

-         *params = 0;

-      }

-      return;

-   default:

-      _mesa_error(ctx, GL_INVALID_ENUM,

-                  "glGetFramebufferAttachmentParameterivEXT(pname)");

-      return;

-   }

-}

-

-

-void GLAPIENTRY

-_mesa_GenerateMipmapEXT(GLenum target)

-{

-   struct gl_texture_object *texObj;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   switch (target) {

-   case GL_TEXTURE_1D:

-   case GL_TEXTURE_2D:

-   case GL_TEXTURE_3D:

-   case GL_TEXTURE_CUBE_MAP:

-      /* OK, legal value */

-      break;

-   default:

-      /* XXX need to implement GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY */

-      _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)");

-      return;

-   }

-

-   texObj = _mesa_get_current_tex_object(ctx, target);

-

-   if (texObj->BaseLevel >= texObj->MaxLevel) {

-      /* nothing to do */

-      return;

-   }

-

-   if (texObj->Target == GL_TEXTURE_CUBE_MAP &&

-       !_mesa_cube_complete(texObj)) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glGenerateMipmap(incomplete cube map)");

-      return;

-   }

-

-   _mesa_lock_texture(ctx, texObj);

-   if (target == GL_TEXTURE_CUBE_MAP) {

-      GLuint face;

-      for (face = 0; face < 6; face++)

-	 ctx->Driver.GenerateMipmap(ctx,

-				    GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,

-				    texObj);

-   }

-   else {

-      ctx->Driver.GenerateMipmap(ctx, target, texObj);

-   }

-   _mesa_unlock_texture(ctx, texObj);

-}

-

-

-#if FEATURE_EXT_framebuffer_blit

-

-static const struct gl_renderbuffer_attachment *

-find_attachment(const struct gl_framebuffer *fb,

-                const struct gl_renderbuffer *rb)

-{

-   GLuint i;

-   for (i = 0; i < Elements(fb->Attachment); i++) {

-      if (fb->Attachment[i].Renderbuffer == rb)

-         return &fb->Attachment[i];

-   }

-   return NULL;

-}

-

-

-

-/**

- * Blit rectangular region, optionally from one framebuffer to another.

- *

- * Note, if the src buffer is multisampled and the dest is not, this is

- * when the samples must be resolved to a single color.

- */

-void GLAPIENTRY

-_mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,

-                         GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,

-                         GLbitfield mask, GLenum filter)

-{

-   const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |

-                                     GL_DEPTH_BUFFER_BIT |

-                                     GL_STENCIL_BUFFER_BIT);

-   const struct gl_framebuffer *readFb, *drawFb;

-   const struct gl_renderbuffer *colorReadRb, *colorDrawRb;

-   GET_CURRENT_CONTEXT(ctx);

-

-   ASSERT_OUTSIDE_BEGIN_END(ctx);

-   FLUSH_VERTICES(ctx, _NEW_BUFFERS);

-

-   if (MESA_VERBOSE & VERBOSE_API)

-      _mesa_debug(ctx,

-                  "glBlitFramebuffer(%d, %d, %d, %d,  %d, %d, %d, %d, 0x%x, %s)\n",

-                  srcX0, srcY0, srcX1, srcY1,

-                  dstX0, dstY0, dstX1, dstY1,

-                  mask, _mesa_lookup_enum_by_nr(filter));

-

-   if (ctx->NewState) {

-      _mesa_update_state(ctx);

-   }

-

-   readFb = ctx->ReadBuffer;

-   drawFb = ctx->DrawBuffer;

-

-   if (!readFb || !drawFb) {

-      /* This will normally never happen but someday we may want to

-       * support MakeCurrent() with no drawables.

-       */

-      return;

-   }

-

-   /* check for complete framebuffers */

-   if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||

-       readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,

-                  "glBlitFramebufferEXT(incomplete draw/read buffers)");

-      return;

-   }

-

-   if (filter != GL_NEAREST && filter != GL_LINEAR) {

-      _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");

-      return;

-   }

-

-   if (mask & ~legalMaskBits) {

-      _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");

-      return;

-   }

-

-   /* depth/stencil must be blitted with nearest filtering */

-   if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))

-        && filter != GL_NEAREST) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-             "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");

-      return;

-   }

-

-   /* get color read/draw renderbuffers */

-   if (mask & GL_COLOR_BUFFER_BIT) {

-      colorReadRb = readFb->_ColorReadBuffer;

-      colorDrawRb = drawFb->_ColorDrawBuffers[0];

-   }

-   else {

-      colorReadRb = colorDrawRb = NULL;

-   }

-

-   if (mask & GL_STENCIL_BUFFER_BIT) {

-      struct gl_renderbuffer *readRb = readFb->_StencilBuffer;

-      struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer;

-      if (!readRb ||

-          !drawRb ||

-          _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) != 

-          _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glBlitFramebufferEXT(stencil buffer size mismatch)");

-         return;

-      }

-   }

-

-   if (mask & GL_DEPTH_BUFFER_BIT) {

-      struct gl_renderbuffer *readRb = readFb->_DepthBuffer;

-      struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer;

-      if (!readRb ||

-          !drawRb ||

-          _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) != 

-          _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                     "glBlitFramebufferEXT(depth buffer size mismatch)");

-         return;

-      }

-   }

-

-   if (readFb->Visual.samples > 0 &&

-       drawFb->Visual.samples > 0 &&

-       readFb->Visual.samples != drawFb->Visual.samples) {

-      _mesa_error(ctx, GL_INVALID_OPERATION,

-                  "glBlitFramebufferEXT(mismatched samples");

-      return;

-   }

-

-   /* extra checks for multisample copies... */

-   if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {

-      /* src and dest region sizes must be the same */

-      if (srcX1 - srcX0 != dstX1 - dstX0 ||

-          srcY1 - srcY0 != dstY1 - dstY0) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                "glBlitFramebufferEXT(bad src/dst multisample region sizes)");

-         return;

-      }

-

-      /* color formats must match */

-      if (colorReadRb &&

-          colorDrawRb &&

-          colorReadRb->Format != colorDrawRb->Format) {

-         _mesa_error(ctx, GL_INVALID_OPERATION,

-                "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");

-         return;

-      }

-   }

-

-   if (!ctx->Extensions.EXT_framebuffer_blit) {

-      _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");

-      return;

-   }

-

-   /* Debug code */

-   if (DEBUG_BLIT) {

-      printf("glBlitFramebuffer(%d, %d, %d, %d,  %d, %d, %d, %d,"

-	     " 0x%x, 0x%x)\n",

-	     srcX0, srcY0, srcX1, srcY1,

-	     dstX0, dstY0, dstX1, dstY1,

-	     mask, filter);

-      if (colorReadRb) {

-         const struct gl_renderbuffer_attachment *att;

-

-         att = find_attachment(readFb, colorReadRb);

-         printf("  Src FBO %u  RB %u (%dx%d)  ",

-		readFb->Name, colorReadRb->Name,

-		colorReadRb->Width, colorReadRb->Height);

-         if (att && att->Texture) {

-            printf("Tex %u  tgt 0x%x  level %u  face %u",

-		   att->Texture->Name,

-		   att->Texture->Target,

-		   att->TextureLevel,

-		   att->CubeMapFace);

-         }

-         printf("\n");

-

-         att = find_attachment(drawFb, colorDrawRb);

-         printf("  Dst FBO %u  RB %u (%dx%d)  ",

-		drawFb->Name, colorDrawRb->Name,

-		colorDrawRb->Width, colorDrawRb->Height);

-         if (att && att->Texture) {

-            printf("Tex %u  tgt 0x%x  level %u  face %u",

-		   att->Texture->Name,

-		   att->Texture->Target,

-		   att->TextureLevel,

-		   att->CubeMapFace);

-         }

-         printf("\n");

-      }

-   }

-

-   ASSERT(ctx->Driver.BlitFramebuffer);

-   ctx->Driver.BlitFramebuffer(ctx,

-                               srcX0, srcY0, srcX1, srcY1,

-                               dstX0, dstY0, dstX1, dstY1,

-                               mask, filter);

-}

-#endif /* FEATURE_EXT_framebuffer_blit */

-

-#if FEATURE_ARB_geometry_shader4

-void GLAPIENTRY

-_mesa_FramebufferTextureARB(GLenum target, GLenum attachment,

-                            GLuint texture, GLint level)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   _mesa_error(ctx, GL_INVALID_OPERATION,

-               "glFramebufferTextureARB "

-               "not implemented!");

-}

-

-void GLAPIENTRY

-_mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,

-                                GLuint texture, GLint level, GLenum face)

-{

-   GET_CURRENT_CONTEXT(ctx);

-   _mesa_error(ctx, GL_INVALID_OPERATION,

-               "glFramebufferTextureFaceARB "

-               "not implemented!");

-}

-#endif /* FEATURE_ARB_geometry_shader4 */

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/*
+ * GL_EXT/ARB_framebuffer_object extensions
+ *
+ * Authors:
+ *   Brian Paul
+ */
+
+
+#include "buffers.h"
+#include "context.h"
+#include "enums.h"
+#include "fbobject.h"
+#include "formats.h"
+#include "framebuffer.h"
+#include "hash.h"
+#include "macros.h"
+#include "mfeatures.h"
+#include "mtypes.h"
+#include "renderbuffer.h"
+#include "state.h"
+#include "teximage.h"
+#include "texobj.h"
+
+
+/** Set this to 1 to help debug FBO incompleteness problems */
+#define DEBUG_FBO 0
+
+/** Set this to 1 to debug/log glBlitFramebuffer() calls */
+#define DEBUG_BLIT 0
+
+
+/**
+ * Notes:
+ *
+ * None of the GL_EXT_framebuffer_object functions are compiled into
+ * display lists.
+ */
+
+
+
+/*
+ * When glGenRender/FramebuffersEXT() is called we insert pointers to
+ * these placeholder objects into the hash table.
+ * Later, when the object ID is first bound, we replace the placeholder
+ * with the real frame/renderbuffer.
+ */
+static struct gl_framebuffer DummyFramebuffer;
+static struct gl_renderbuffer DummyRenderbuffer;
+
+/* We bind this framebuffer when applications pass a NULL
+ * drawable/surface in make current. */
+static struct gl_framebuffer IncompleteFramebuffer;
+
+
+#define IS_CUBE_FACE(TARGET) \
+   ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \
+    (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)
+
+
+static void
+delete_dummy_renderbuffer(struct gl_renderbuffer *rb)
+{
+   /* no op */
+}
+
+static void
+delete_dummy_framebuffer(struct gl_framebuffer *fb)
+{
+   /* no op */
+}
+
+
+void
+_mesa_init_fbobjects(struct gl_context *ctx)
+{
+   _glthread_INIT_MUTEX(DummyFramebuffer.Mutex);
+   _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);
+   _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);
+   DummyFramebuffer.Delete = delete_dummy_framebuffer;
+   DummyRenderbuffer.Delete = delete_dummy_renderbuffer;
+   IncompleteFramebuffer.Delete = delete_dummy_framebuffer;
+}
+
+struct gl_framebuffer *
+_mesa_get_incomplete_framebuffer(void)
+{
+   return &IncompleteFramebuffer;
+}
+
+/**
+ * Helper routine for getting a gl_renderbuffer.
+ */
+struct gl_renderbuffer *
+_mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)
+{
+   struct gl_renderbuffer *rb;
+
+   if (id == 0)
+      return NULL;
+
+   rb = (struct gl_renderbuffer *)
+      _mesa_HashLookup(ctx->Shared->RenderBuffers, id);
+   return rb;
+}
+
+
+/**
+ * Helper routine for getting a gl_framebuffer.
+ */
+struct gl_framebuffer *
+_mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)
+{
+   struct gl_framebuffer *fb;
+
+   if (id == 0)
+      return NULL;
+
+   fb = (struct gl_framebuffer *)
+      _mesa_HashLookup(ctx->Shared->FrameBuffers, id);
+   return fb;
+}
+
+
+/**
+ * Mark the given framebuffer as invalid.  This will force the
+ * test for framebuffer completeness to be done before the framebuffer
+ * is used.
+ */
+static void
+invalidate_framebuffer(struct gl_framebuffer *fb)
+{
+   fb->_Status = 0; /* "indeterminate" */
+}
+
+
+/**
+ * Return the gl_framebuffer object which corresponds to the given
+ * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
+ * Check support for GL_EXT_framebuffer_blit to determine if certain
+ * targets are legal.
+ * \return gl_framebuffer pointer or NULL if target is illegal
+ */
+static struct gl_framebuffer *
+get_framebuffer_target(struct gl_context *ctx, GLenum target)
+{
+   switch (target) {
+   case GL_DRAW_FRAMEBUFFER:
+      return ctx->Extensions.EXT_framebuffer_blit ? ctx->DrawBuffer : NULL;
+   case GL_READ_FRAMEBUFFER:
+      return ctx->Extensions.EXT_framebuffer_blit ? ctx->ReadBuffer : NULL;
+   case GL_FRAMEBUFFER_EXT:
+      return ctx->DrawBuffer;
+   default:
+      return NULL;
+   }
+}
+
+
+/**
+ * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
+ * gl_renderbuffer_attachment object.
+ * This function is only used for user-created FB objects, not the
+ * default / window-system FB object.
+ * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
+ * the depth buffer attachment point.
+ */
+struct gl_renderbuffer_attachment *
+_mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
+                     GLenum attachment)
+{
+   GLuint i;
+
+   assert(fb->Name > 0);
+
+   switch (attachment) {
+   case GL_COLOR_ATTACHMENT0_EXT:
+   case GL_COLOR_ATTACHMENT1_EXT:
+   case GL_COLOR_ATTACHMENT2_EXT:
+   case GL_COLOR_ATTACHMENT3_EXT:
+   case GL_COLOR_ATTACHMENT4_EXT:
+   case GL_COLOR_ATTACHMENT5_EXT:
+   case GL_COLOR_ATTACHMENT6_EXT:
+   case GL_COLOR_ATTACHMENT7_EXT:
+   case GL_COLOR_ATTACHMENT8_EXT:
+   case GL_COLOR_ATTACHMENT9_EXT:
+   case GL_COLOR_ATTACHMENT10_EXT:
+   case GL_COLOR_ATTACHMENT11_EXT:
+   case GL_COLOR_ATTACHMENT12_EXT:
+   case GL_COLOR_ATTACHMENT13_EXT:
+   case GL_COLOR_ATTACHMENT14_EXT:
+   case GL_COLOR_ATTACHMENT15_EXT:
+      i = attachment - GL_COLOR_ATTACHMENT0_EXT;
+      if (i >= ctx->Const.MaxColorAttachments) {
+	 return NULL;
+      }
+      return &fb->Attachment[BUFFER_COLOR0 + i];
+   case GL_DEPTH_STENCIL_ATTACHMENT:
+      /* fall-through */
+   case GL_DEPTH_BUFFER:
+      /* fall-through / new in GL 3.0 */
+   case GL_DEPTH_ATTACHMENT_EXT:
+      return &fb->Attachment[BUFFER_DEPTH];
+   case GL_STENCIL_BUFFER:
+      /* fall-through / new in GL 3.0 */
+   case GL_STENCIL_ATTACHMENT_EXT:
+      return &fb->Attachment[BUFFER_STENCIL];
+   default:
+      return NULL;
+   }
+}
+
+
+/**
+ * As above, but only used for getting attachments of the default /
+ * window-system framebuffer (not user-created framebuffer objects).
+ */
+static struct gl_renderbuffer_attachment *
+_mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
+                         GLenum attachment)
+{
+   assert(fb->Name == 0);
+
+   switch (attachment) {
+   case GL_FRONT_LEFT:
+      return &fb->Attachment[BUFFER_FRONT_LEFT];
+   case GL_FRONT_RIGHT:
+      return &fb->Attachment[BUFFER_FRONT_RIGHT];
+   case GL_BACK_LEFT:
+      return &fb->Attachment[BUFFER_BACK_LEFT];
+   case GL_BACK_RIGHT:
+      return &fb->Attachment[BUFFER_BACK_RIGHT];
+   case GL_AUX0:
+      if (fb->Visual.numAuxBuffers == 1) {
+         return &fb->Attachment[BUFFER_AUX0];
+      }
+      return NULL;
+   case GL_DEPTH_BUFFER:
+      /* fall-through / new in GL 3.0 */
+   case GL_DEPTH_ATTACHMENT_EXT:
+      return &fb->Attachment[BUFFER_DEPTH];
+   case GL_STENCIL_BUFFER:
+      /* fall-through / new in GL 3.0 */
+   case GL_STENCIL_ATTACHMENT_EXT:
+      return &fb->Attachment[BUFFER_STENCIL];
+   default:
+      return NULL;
+   }
+}
+
+
+
+/**
+ * Remove any texture or renderbuffer attached to the given attachment
+ * point.  Update reference counts, etc.
+ */
+void
+_mesa_remove_attachment(struct gl_context *ctx,
+                        struct gl_renderbuffer_attachment *att)
+{
+   if (att->Type == GL_TEXTURE) {
+      ASSERT(att->Texture);
+      if (ctx->Driver.FinishRenderTexture) {
+         /* tell driver that we're done rendering to this texture. */
+         ctx->Driver.FinishRenderTexture(ctx, att);
+      }
+      _mesa_reference_texobj(&att->Texture, NULL); /* unbind */
+      ASSERT(!att->Texture);
+   }
+   if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {
+      ASSERT(!att->Texture);
+      _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */
+      ASSERT(!att->Renderbuffer);
+   }
+   att->Type = GL_NONE;
+   att->Complete = GL_TRUE;
+}
+
+
+/**
+ * Bind a texture object to an attachment point.
+ * The previous binding, if any, will be removed first.
+ */
+void
+_mesa_set_texture_attachment(struct gl_context *ctx,
+                             struct gl_framebuffer *fb,
+                             struct gl_renderbuffer_attachment *att,
+                             struct gl_texture_object *texObj,
+                             GLenum texTarget, GLuint level, GLuint zoffset)
+{
+   if (att->Texture == texObj) {
+      /* re-attaching same texture */
+      ASSERT(att->Type == GL_TEXTURE);
+      if (ctx->Driver.FinishRenderTexture)
+	 ctx->Driver.FinishRenderTexture(ctx, att);
+   }
+   else {
+      /* new attachment */
+      if (ctx->Driver.FinishRenderTexture && att->Texture)
+	 ctx->Driver.FinishRenderTexture(ctx, att);
+      _mesa_remove_attachment(ctx, att);
+      att->Type = GL_TEXTURE;
+      assert(!att->Texture);
+      _mesa_reference_texobj(&att->Texture, texObj);
+   }
+
+   /* always update these fields */
+   att->TextureLevel = level;
+   att->CubeMapFace = _mesa_tex_target_to_face(texTarget);
+   att->Zoffset = zoffset;
+   att->Complete = GL_FALSE;
+
+   if (_mesa_get_attachment_teximage(att)) {
+      ctx->Driver.RenderTexture(ctx, fb, att);
+   }
+
+   invalidate_framebuffer(fb);
+}
+
+
+/**
+ * Bind a renderbuffer to an attachment point.
+ * The previous binding, if any, will be removed first.
+ */
+void
+_mesa_set_renderbuffer_attachment(struct gl_context *ctx,
+                                  struct gl_renderbuffer_attachment *att,
+                                  struct gl_renderbuffer *rb)
+{
+   /* XXX check if re-doing same attachment, exit early */
+   _mesa_remove_attachment(ctx, att);
+   att->Type = GL_RENDERBUFFER_EXT;
+   att->Texture = NULL; /* just to be safe */
+   att->Complete = GL_FALSE;
+   _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
+}
+
+
+/**
+ * Fallback for ctx->Driver.FramebufferRenderbuffer()
+ * Attach a renderbuffer object to a framebuffer object.
+ */
+void
+_mesa_framebuffer_renderbuffer(struct gl_context *ctx,
+                               struct gl_framebuffer *fb,
+                               GLenum attachment, struct gl_renderbuffer *rb)
+{
+   struct gl_renderbuffer_attachment *att;
+
+   _glthread_LOCK_MUTEX(fb->Mutex);
+
+   att = _mesa_get_attachment(ctx, fb, attachment);
+   ASSERT(att);
+   if (rb) {
+      _mesa_set_renderbuffer_attachment(ctx, att, rb);
+      if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
+         /* do stencil attachment here (depth already done above) */
+         att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);
+         assert(att);
+         _mesa_set_renderbuffer_attachment(ctx, att, rb);
+      }
+      rb->AttachedAnytime = GL_TRUE;
+   }
+   else {
+      _mesa_remove_attachment(ctx, att);
+   }
+
+   invalidate_framebuffer(fb);
+
+   _glthread_UNLOCK_MUTEX(fb->Mutex);
+}
+
+
+/**
+ * Fallback for ctx->Driver.ValidateFramebuffer()
+ * Check if the renderbuffer's formats are supported by the software
+ * renderer.
+ * Drivers should probably override this.
+ */
+void
+_mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+   gl_buffer_index buf;
+   for (buf = 0; buf < BUFFER_COUNT; buf++) {
+      const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;
+      if (rb) {
+         switch (rb->_BaseFormat) {
+         case GL_ALPHA:
+         case GL_LUMINANCE_ALPHA:
+         case GL_LUMINANCE:
+         case GL_INTENSITY:
+         case GL_RED:
+         case GL_RG:
+            fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
+            return;
+         default:
+            /* render buffer format is supported by software rendering */
+            ;
+         }
+      }
+   }
+}
+
+
+/**
+ * For debug only.
+ */
+static void
+att_incomplete(const char *msg)
+{
+#if DEBUG_FBO
+   _mesa_debug(NULL, "attachment incomplete: %s\n", msg);
+#else
+   (void) msg;
+#endif
+}
+
+
+/**
+ * For debug only.
+ */
+static void
+fbo_incomplete(const char *msg, int index)
+{
+#if DEBUG_FBO
+   _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
+#else
+   (void) msg;
+   (void) index;
+#endif
+}
+
+
+/**
+ * Is the given base format a legal format for a color renderbuffer?
+ */
+GLboolean
+_mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)
+{
+   switch (baseFormat) {
+   case GL_RGB:
+   case GL_RGBA:
+      return GL_TRUE;
+   case GL_LUMINANCE:
+   case GL_LUMINANCE_ALPHA:
+   case GL_INTENSITY:
+   case GL_ALPHA:
+      return ctx->Extensions.ARB_framebuffer_object;
+   case GL_RED:
+   case GL_RG:
+      return ctx->Extensions.ARB_texture_rg;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Is the given base format a legal format for a depth/stencil renderbuffer?
+ */
+static GLboolean
+is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)
+{
+   switch (baseFormat) {
+   case GL_DEPTH_COMPONENT:
+   case GL_DEPTH_STENCIL_EXT:
+      return GL_TRUE;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Test if an attachment point is complete and update its Complete field.
+ * \param format if GL_COLOR, this is a color attachment point,
+ *               if GL_DEPTH, this is a depth component attachment point,
+ *               if GL_STENCIL, this is a stencil component attachment point.
+ */
+static void
+test_attachment_completeness(const struct gl_context *ctx, GLenum format,
+                             struct gl_renderbuffer_attachment *att)
+{
+   assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
+
+   /* assume complete */
+   att->Complete = GL_TRUE;
+
+   /* Look for reasons why the attachment might be incomplete */
+   if (att->Type == GL_TEXTURE) {
+      const struct gl_texture_object *texObj = att->Texture;
+      struct gl_texture_image *texImage;
+      GLenum baseFormat;
+
+      if (!texObj) {
+         att_incomplete("no texobj");
+         att->Complete = GL_FALSE;
+         return;
+      }
+
+      texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];
+      if (!texImage) {
+         att_incomplete("no teximage");
+         att->Complete = GL_FALSE;
+         return;
+      }
+      if (texImage->Width < 1 || texImage->Height < 1) {
+         att_incomplete("teximage width/height=0");
+         printf("texobj = %u\n", texObj->Name);
+         printf("level = %d\n", att->TextureLevel);
+         att->Complete = GL_FALSE;
+         return;
+      }
+      if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {
+         att_incomplete("bad z offset");
+         att->Complete = GL_FALSE;
+         return;
+      }
+
+      baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
+
+      if (format == GL_COLOR) {
+         if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
+            att_incomplete("bad format");
+            att->Complete = GL_FALSE;
+            return;
+         }
+         if (_mesa_is_format_compressed(texImage->TexFormat)) {
+            att_incomplete("compressed internalformat");
+            att->Complete = GL_FALSE;
+            return;
+         }
+      }
+      else if (format == GL_DEPTH) {
+         if (baseFormat == GL_DEPTH_COMPONENT) {
+            /* OK */
+         }
+         else if (ctx->Extensions.EXT_packed_depth_stencil &&
+                  ctx->Extensions.ARB_depth_texture &&
+                  baseFormat == GL_DEPTH_STENCIL_EXT) {
+            /* OK */
+         }
+         else {
+            att->Complete = GL_FALSE;
+            att_incomplete("bad depth format");
+            return;
+         }
+      }
+      else {
+         ASSERT(format == GL_STENCIL);
+         if (ctx->Extensions.EXT_packed_depth_stencil &&
+             ctx->Extensions.ARB_depth_texture &&
+             baseFormat == GL_DEPTH_STENCIL_EXT) {
+            /* OK */
+         }
+         else {
+            /* no such thing as stencil-only textures */
+            att_incomplete("illegal stencil texture");
+            att->Complete = GL_FALSE;
+            return;
+         }
+      }
+   }
+   else if (att->Type == GL_RENDERBUFFER_EXT) {
+      const GLenum baseFormat =
+         _mesa_get_format_base_format(att->Renderbuffer->Format);
+
+      ASSERT(att->Renderbuffer);
+      if (!att->Renderbuffer->InternalFormat ||
+          att->Renderbuffer->Width < 1 ||
+          att->Renderbuffer->Height < 1) {
+         att_incomplete("0x0 renderbuffer");
+         att->Complete = GL_FALSE;
+         return;
+      }
+      if (format == GL_COLOR) {
+         if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
+            att_incomplete("bad renderbuffer color format");
+            att->Complete = GL_FALSE;
+            return;
+         }
+      }
+      else if (format == GL_DEPTH) {
+         if (baseFormat == GL_DEPTH_COMPONENT) {
+            /* OK */
+         }
+         else if (ctx->Extensions.EXT_packed_depth_stencil &&
+                  baseFormat == GL_DEPTH_STENCIL_EXT) {
+            /* OK */
+         }
+         else {
+            att_incomplete("bad renderbuffer depth format");
+            att->Complete = GL_FALSE;
+            return;
+         }
+      }
+      else {
+         assert(format == GL_STENCIL);
+         if (baseFormat == GL_STENCIL_INDEX) {
+            /* OK */
+         }
+         else if (ctx->Extensions.EXT_packed_depth_stencil &&
+                  baseFormat == GL_DEPTH_STENCIL_EXT) {
+            /* OK */
+         }
+         else {
+            att->Complete = GL_FALSE;
+            att_incomplete("bad renderbuffer stencil format");
+            return;
+         }
+      }
+   }
+   else {
+      ASSERT(att->Type == GL_NONE);
+      /* complete */
+      return;
+   }
+}
+
+
+/**
+ * Test if the given framebuffer object is complete and update its
+ * Status field with the results.
+ * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
+ * driver to make hardware-specific validation/completeness checks.
+ * Also update the framebuffer's Width and Height fields if the
+ * framebuffer is complete.
+ */
+void
+_mesa_test_framebuffer_completeness(struct gl_context *ctx,
+                                    struct gl_framebuffer *fb)
+{
+   GLuint numImages;
+   GLenum intFormat = GL_NONE; /* color buffers' internal format */
+   GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;
+   GLint numSamples = -1;
+   GLint i;
+   GLuint j;
+
+   assert(fb->Name != 0);
+
+   numImages = 0;
+   fb->Width = 0;
+   fb->Height = 0;
+
+   /* Start at -2 to more easily loop over all attachment points.
+    *  -2: depth buffer
+    *  -1: stencil buffer
+    * >=0: color buffer
+    */
+   for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {
+      struct gl_renderbuffer_attachment *att;
+      GLenum f;
+      gl_format attFormat;
+
+      /*
+       * XXX for ARB_fbo, only check color buffers that are named by
+       * GL_READ_BUFFER and GL_DRAW_BUFFERi.
+       */
+
+      /* check for attachment completeness
+       */
+      if (i == -2) {
+         att = &fb->Attachment[BUFFER_DEPTH];
+         test_attachment_completeness(ctx, GL_DEPTH, att);
+         if (!att->Complete) {
+            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
+            fbo_incomplete("depth attachment incomplete", -1);
+            return;
+         }
+      }
+      else if (i == -1) {
+         att = &fb->Attachment[BUFFER_STENCIL];
+         test_attachment_completeness(ctx, GL_STENCIL, att);
+         if (!att->Complete) {
+            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
+            fbo_incomplete("stencil attachment incomplete", -1);
+            return;
+         }
+      }
+      else {
+         att = &fb->Attachment[BUFFER_COLOR0 + i];
+         test_attachment_completeness(ctx, GL_COLOR, att);
+         if (!att->Complete) {
+            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
+            fbo_incomplete("color attachment incomplete", i);
+            return;
+         }
+      }
+
+      /* get width, height, format of the renderbuffer/texture
+       */
+      if (att->Type == GL_TEXTURE) {
+         const struct gl_texture_image *texImg =
+            _mesa_get_attachment_teximage(att);
+         minWidth = MIN2(minWidth, texImg->Width);
+         maxWidth = MAX2(maxWidth, texImg->Width);
+         minHeight = MIN2(minHeight, texImg->Height);
+         maxHeight = MAX2(maxHeight, texImg->Height);
+         f = texImg->_BaseFormat;
+         attFormat = texImg->TexFormat;
+         numImages++;
+         if (!_mesa_is_legal_color_format(ctx, f) &&
+             !is_legal_depth_format(ctx, f)) {
+            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
+            fbo_incomplete("texture attachment incomplete", -1);
+            return;
+         }
+      }
+      else if (att->Type == GL_RENDERBUFFER_EXT) {
+         minWidth = MIN2(minWidth, att->Renderbuffer->Width);
+         maxWidth = MAX2(minWidth, att->Renderbuffer->Width);
+         minHeight = MIN2(minHeight, att->Renderbuffer->Height);
+         maxHeight = MAX2(minHeight, att->Renderbuffer->Height);
+         f = att->Renderbuffer->InternalFormat;
+         attFormat = att->Renderbuffer->Format;
+         numImages++;
+      }
+      else {
+         assert(att->Type == GL_NONE);
+         continue;
+      }
+
+      if (att->Renderbuffer && numSamples < 0) {
+         /* first buffer */
+         numSamples = att->Renderbuffer->NumSamples;
+      }
+
+      /* check if integer color */
+      fb->_IntegerColor = _mesa_is_format_integer_color(attFormat);
+
+      /* Error-check width, height, format, samples
+       */
+      if (numImages == 1) {
+         /* save format, num samples */
+         if (i >= 0) {
+            intFormat = f;
+         }
+      }
+      else {
+         if (!ctx->Extensions.ARB_framebuffer_object) {
+            /* check that width, height, format are same */
+            if (minWidth != maxWidth || minHeight != maxHeight) {
+               fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;
+               fbo_incomplete("width or height mismatch", -1);
+               return;
+            }
+            /* check that all color buffer have same format */
+            if (intFormat != GL_NONE && f != intFormat) {
+               fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
+               fbo_incomplete("format mismatch", -1);
+               return;
+            }
+         }
+         if (att->Renderbuffer &&
+             att->Renderbuffer->NumSamples != numSamples) {
+            fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;
+            fbo_incomplete("inconsistant number of samples", i);
+            return;
+         }            
+
+      }
+   }
+
+#if FEATURE_GL
+   if (ctx->API == API_OPENGL) {
+      /* Check that all DrawBuffers are present */
+      for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
+	 if (fb->ColorDrawBuffer[j] != GL_NONE) {
+	    const struct gl_renderbuffer_attachment *att
+	       = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
+	    assert(att);
+	    if (att->Type == GL_NONE) {
+	       fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
+	       fbo_incomplete("missing drawbuffer", j);
+	       return;
+	    }
+	 }
+      }
+
+      /* Check that the ReadBuffer is present */
+      if (fb->ColorReadBuffer != GL_NONE) {
+	 const struct gl_renderbuffer_attachment *att
+	    = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);
+	 assert(att);
+	 if (att->Type == GL_NONE) {
+	    fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
+            fbo_incomplete("missing readbuffer", -1);
+	    return;
+	 }
+      }
+   }
+#else
+   (void) j;
+#endif
+
+   if (numImages == 0) {
+      fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
+      fbo_incomplete("no attachments", -1);
+      return;
+   }
+
+   /* Provisionally set status = COMPLETE ... */
+   fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
+
+   /* ... but the driver may say the FB is incomplete.
+    * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
+    * if anything.
+    */
+   if (ctx->Driver.ValidateFramebuffer) {
+      ctx->Driver.ValidateFramebuffer(ctx, fb);
+      if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+         fbo_incomplete("driver marked FBO as incomplete", -1);
+      }
+   }
+
+   if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {
+      /*
+       * Note that if ARB_framebuffer_object is supported and the attached
+       * renderbuffers/textures are different sizes, the framebuffer
+       * width/height will be set to the smallest width/height.
+       */
+      fb->Width = minWidth;
+      fb->Height = minHeight;
+
+      /* finally, update the visual info for the framebuffer */
+      _mesa_update_framebuffer_visual(ctx, fb);
+   }
+}
+
+
+GLboolean GLAPIENTRY
+_mesa_IsRenderbufferEXT(GLuint renderbuffer)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+   if (renderbuffer) {
+      struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
+      if (rb != NULL && rb != &DummyRenderbuffer)
+         return GL_TRUE;
+   }
+   return GL_FALSE;
+}
+
+
+void GLAPIENTRY
+_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
+{
+   struct gl_renderbuffer *newRb;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (target != GL_RENDERBUFFER_EXT) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");
+      return;
+   }
+
+   /* No need to flush here since the render buffer binding has no
+    * effect on rendering state.
+    */
+
+   if (renderbuffer) {
+      newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
+      if (newRb == &DummyRenderbuffer) {
+         /* ID was reserved, but no real renderbuffer object made yet */
+         newRb = NULL;
+      }
+      else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {
+         /* All RB IDs must be Gen'd */
+         _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");
+         return;
+      }
+
+      if (!newRb) {
+	 /* create new renderbuffer object */
+	 newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
+	 if (!newRb) {
+	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
+	    return;
+	 }
+         ASSERT(newRb->AllocStorage);
+         _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
+         newRb->RefCount = 1; /* referenced by hash table */
+      }
+   }
+   else {
+      newRb = NULL;
+   }
+
+   ASSERT(newRb != &DummyRenderbuffer);
+
+   _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
+}
+
+
+/**
+ * If the given renderbuffer is anywhere attached to the framebuffer, detach
+ * the renderbuffer.
+ * This is used when a renderbuffer object is deleted.
+ * The spec calls for unbinding.
+ */
+static void
+detach_renderbuffer(struct gl_context *ctx,
+                    struct gl_framebuffer *fb,
+                    struct gl_renderbuffer *rb)
+{
+   GLuint i;
+   for (i = 0; i < BUFFER_COUNT; i++) {
+      if (fb->Attachment[i].Renderbuffer == rb) {
+         _mesa_remove_attachment(ctx, &fb->Attachment[i]);
+      }
+   }
+   invalidate_framebuffer(fb);
+}
+
+
+void GLAPIENTRY
+_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
+{
+   GLint i;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   for (i = 0; i < n; i++) {
+      if (renderbuffers[i] > 0) {
+	 struct gl_renderbuffer *rb;
+	 rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);
+	 if (rb) {
+            /* check if deleting currently bound renderbuffer object */
+            if (rb == ctx->CurrentRenderbuffer) {
+               /* bind default */
+               ASSERT(rb->RefCount >= 2);
+               _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
+            }
+
+            if (ctx->DrawBuffer->Name) {
+               detach_renderbuffer(ctx, ctx->DrawBuffer, rb);
+            }
+            if (ctx->ReadBuffer->Name && ctx->ReadBuffer != ctx->DrawBuffer) {
+               detach_renderbuffer(ctx, ctx->ReadBuffer, rb);
+            }
+
+	    /* Remove from hash table immediately, to free the ID.
+             * But the object will not be freed until it's no longer
+             * referenced anywhere else.
+             */
+	    _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
+
+            if (rb != &DummyRenderbuffer) {
+               /* no longer referenced by hash table */
+               _mesa_reference_renderbuffer(&rb, NULL);
+	    }
+	 }
+      }
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLuint first;
+   GLint i;
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (n < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
+      return;
+   }
+
+   if (!renderbuffers)
+      return;
+
+   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
+
+   for (i = 0; i < n; i++) {
+      GLuint name = first + i;
+      renderbuffers[i] = name;
+      /* insert dummy placeholder into hash table */
+      _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+      _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
+      _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+   }
+}
+
+
+/**
+ * Given an internal format token for a render buffer, return the
+ * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
+ * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
+ * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
+ *
+ * This is similar to _mesa_base_tex_format() but the set of valid
+ * internal formats is different.
+ *
+ * Note that even if a format is determined to be legal here, validation
+ * of the FBO may fail if the format is not supported by the driver/GPU.
+ *
+ * \param internalFormat  as passed to glRenderbufferStorage()
+ * \return the base internal format, or 0 if internalFormat is illegal
+ */
+GLenum
+_mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
+{
+   /*
+    * Notes: some formats such as alpha, luminance, etc. were added
+    * with GL_ARB_framebuffer_object.
+    */
+   switch (internalFormat) {
+   case GL_ALPHA:
+   case GL_ALPHA4:
+   case GL_ALPHA8:
+   case GL_ALPHA12:
+   case GL_ALPHA16:
+      return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
+   case GL_LUMINANCE:
+   case GL_LUMINANCE4:
+   case GL_LUMINANCE8:
+   case GL_LUMINANCE12:
+   case GL_LUMINANCE16:
+      return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
+   case GL_LUMINANCE_ALPHA:
+   case GL_LUMINANCE4_ALPHA4:
+   case GL_LUMINANCE6_ALPHA2:
+   case GL_LUMINANCE8_ALPHA8:
+   case GL_LUMINANCE12_ALPHA4:
+   case GL_LUMINANCE12_ALPHA12:
+   case GL_LUMINANCE16_ALPHA16:
+      return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
+   case GL_INTENSITY:
+   case GL_INTENSITY4:
+   case GL_INTENSITY8:
+   case GL_INTENSITY12:
+   case GL_INTENSITY16:
+      return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
+   case GL_RGB:
+   case GL_R3_G3_B2:
+   case GL_RGB4:
+   case GL_RGB5:
+   case GL_RGB8:
+   case GL_RGB10:
+   case GL_RGB12:
+   case GL_RGB16:
+   case GL_SRGB8_EXT:
+      return GL_RGB;
+   case GL_RGBA:
+   case GL_RGBA2:
+   case GL_RGBA4:
+   case GL_RGB5_A1:
+   case GL_RGBA8:
+   case GL_RGB10_A2:
+   case GL_RGBA12:
+   case GL_RGBA16:
+   case GL_SRGB8_ALPHA8_EXT:
+      return GL_RGBA;
+   case GL_STENCIL_INDEX:
+   case GL_STENCIL_INDEX1_EXT:
+   case GL_STENCIL_INDEX4_EXT:
+   case GL_STENCIL_INDEX8_EXT:
+   case GL_STENCIL_INDEX16_EXT:
+      return GL_STENCIL_INDEX;
+   case GL_DEPTH_COMPONENT:
+   case GL_DEPTH_COMPONENT16:
+   case GL_DEPTH_COMPONENT24:
+   case GL_DEPTH_COMPONENT32:
+      return GL_DEPTH_COMPONENT;
+   case GL_DEPTH_STENCIL_EXT:
+   case GL_DEPTH24_STENCIL8_EXT:
+      if (ctx->Extensions.EXT_packed_depth_stencil)
+         return GL_DEPTH_STENCIL_EXT;
+      else
+         return 0;
+   case GL_RED:
+   case GL_R8:
+   case GL_R16:
+      return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;
+   case GL_RG:
+   case GL_RG8:
+   case GL_RG16:
+      return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;
+   /* signed normalized texture formats */
+   case GL_RED_SNORM:
+   case GL_R8_SNORM:
+   case GL_R16_SNORM:
+      return ctx->Extensions.EXT_texture_snorm ? GL_RED : 0;
+   case GL_RG_SNORM:
+   case GL_RG8_SNORM:
+   case GL_RG16_SNORM:
+      return ctx->Extensions.EXT_texture_snorm ? GL_RG : 0;
+   case GL_RGB_SNORM:
+   case GL_RGB8_SNORM:
+   case GL_RGB16_SNORM:
+      return ctx->Extensions.EXT_texture_snorm ? GL_RGB : 0;
+   case GL_RGBA_SNORM:
+   case GL_RGBA8_SNORM:
+   case GL_RGBA16_SNORM:
+      return ctx->Extensions.EXT_texture_snorm ? GL_RGBA : 0;
+   case GL_ALPHA_SNORM:
+   case GL_ALPHA8_SNORM:
+   case GL_ALPHA16_SNORM:
+      return ctx->Extensions.EXT_texture_snorm &&
+             ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
+   case GL_LUMINANCE_SNORM:
+   case GL_LUMINANCE8_SNORM:
+   case GL_LUMINANCE16_SNORM:
+      return ctx->Extensions.EXT_texture_snorm &&
+             ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
+   case GL_LUMINANCE_ALPHA_SNORM:
+   case GL_LUMINANCE8_ALPHA8_SNORM:
+   case GL_LUMINANCE16_ALPHA16_SNORM:
+      return ctx->Extensions.EXT_texture_snorm &&
+             ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
+   case GL_INTENSITY_SNORM:
+   case GL_INTENSITY8_SNORM:
+   case GL_INTENSITY16_SNORM:
+      return ctx->Extensions.EXT_texture_snorm &&
+             ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
+   case GL_R16F:
+   case GL_R32F:
+      return ctx->Extensions.ARB_texture_rg &&
+             ctx->Extensions.ARB_texture_float ? GL_RED : 0;
+   case GL_RG16F:
+   case GL_RG32F:
+      return ctx->Extensions.ARB_texture_rg &&
+             ctx->Extensions.ARB_texture_float ? GL_RG : 0;
+   case GL_RGB16F:
+   case GL_RGB32F:
+      return ctx->Extensions.ARB_texture_float ? GL_RGB : 0;
+   case GL_RGBA16F:
+   case GL_RGBA32F:
+      return ctx->Extensions.ARB_texture_float ? GL_RGBA : 0;
+   case GL_ALPHA16F_ARB:
+   case GL_ALPHA32F_ARB:
+      return ctx->Extensions.ARB_texture_float &&
+             ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
+   case GL_LUMINANCE16F_ARB:
+   case GL_LUMINANCE32F_ARB:
+      return ctx->Extensions.ARB_texture_float &&
+             ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
+   case GL_LUMINANCE_ALPHA16F_ARB:
+   case GL_LUMINANCE_ALPHA32F_ARB:
+      return ctx->Extensions.ARB_texture_float &&
+             ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
+   case GL_INTENSITY16F_ARB:
+   case GL_INTENSITY32F_ARB:
+      return ctx->Extensions.ARB_texture_float &&
+             ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
+   /* XXX add integer formats eventually */
+   default:
+      return 0;
+   }
+}
+
+
+/**
+ * Invalidate a renderbuffer attachment.  Called from _mesa_HashWalk().
+ */
+static void
+invalidate_rb(GLuint key, void *data, void *userData)
+{
+   struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
+   struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData;
+
+   /* If this is a user-created FBO */
+   if (fb->Name) {
+      GLuint i;
+      for (i = 0; i < BUFFER_COUNT; i++) {
+         struct gl_renderbuffer_attachment *att = fb->Attachment + i;
+         if (att->Type == GL_RENDERBUFFER &&
+             att->Renderbuffer == rb) {
+            /* Mark fb status as indeterminate to force re-validation */
+            fb->_Status = 0;
+            return;
+         }
+      }
+   }
+}
+
+
+/** sentinal value, see below */
+#define NO_SAMPLES 1000
+
+
+/**
+ * Helper function used by _mesa_RenderbufferStorageEXT() and 
+ * _mesa_RenderbufferStorageMultisample().
+ * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
+ */
+static void
+renderbuffer_storage(GLenum target, GLenum internalFormat,
+                     GLsizei width, GLsizei height, GLsizei samples)
+{
+   const char *func = samples == NO_SAMPLES ?
+      "glRenderbufferStorage" : "RenderbufferStorageMultisample";
+   struct gl_renderbuffer *rb;
+   GLenum baseFormat;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (target != GL_RENDERBUFFER_EXT) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
+      return;
+   }
+
+   baseFormat = _mesa_base_fbo_format(ctx, internalFormat);
+   if (baseFormat == 0) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);
+      return;
+   }
+
+   if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);
+      return;
+   }
+
+   if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);
+      return;
+   }
+
+   if (samples == NO_SAMPLES) {
+      /* NumSamples == 0 indicates non-multisampling */
+      samples = 0;
+   }
+   else if (samples > (GLsizei) ctx->Const.MaxSamples) {
+      /* note: driver may choose to use more samples than what's requested */
+      _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);
+      return;
+   }
+
+   rb = ctx->CurrentRenderbuffer;
+   if (!rb) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);
+      return;
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   if (rb->InternalFormat == internalFormat &&
+       rb->Width == (GLuint) width &&
+       rb->Height == (GLuint) height) {
+      /* no change in allocation needed */
+      return;
+   }
+
+   /* These MUST get set by the AllocStorage func */
+   rb->Format = MESA_FORMAT_NONE;
+   rb->NumSamples = samples;
+
+   /* Now allocate the storage */
+   ASSERT(rb->AllocStorage);
+   if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {
+      /* No error - check/set fields now */
+      assert(rb->Format != MESA_FORMAT_NONE);
+      assert(rb->Width == (GLuint) width);
+      assert(rb->Height == (GLuint) height);
+      rb->InternalFormat = internalFormat;
+      rb->_BaseFormat = baseFormat;
+      assert(rb->_BaseFormat != 0);
+   }
+   else {
+      /* Probably ran out of memory - clear the fields */
+      rb->Width = 0;
+      rb->Height = 0;
+      rb->Format = MESA_FORMAT_NONE;
+      rb->InternalFormat = GL_NONE;
+      rb->_BaseFormat = GL_NONE;
+      rb->NumSamples = 0;
+   }
+
+   /* Invalidate the framebuffers the renderbuffer is attached in. */
+   if (rb->AttachedAnytime) {
+      _mesa_HashWalk(ctx->Shared->FrameBuffers, invalidate_rb, rb);
+   }
+}
+
+
+#if FEATURE_OES_EGL_image
+void GLAPIENTRY
+_mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
+{
+   struct gl_renderbuffer *rb;
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (!ctx->Extensions.OES_EGL_image) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glEGLImageTargetRenderbufferStorageOES(unsupported)");
+      return;
+   }
+
+   if (target != GL_RENDERBUFFER) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "EGLImageTargetRenderbufferStorageOES");
+      return;
+   }
+
+   rb = ctx->CurrentRenderbuffer;
+   if (!rb) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "EGLImageTargetRenderbufferStorageOES");
+      return;
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image);
+}
+#endif
+
+
+/**
+ * Helper function for _mesa_GetRenderbufferParameterivEXT() and
+ * _mesa_GetFramebufferAttachmentParameterivEXT()
+ * We have to be careful to respect the base format.  For example, if a
+ * renderbuffer/texture was created with internalFormat=GL_RGB but the
+ * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
+ * we need to return zero.
+ */
+static GLint
+get_component_bits(GLenum pname, GLenum baseFormat, gl_format format)
+{
+   switch (pname) {
+   case GL_RENDERBUFFER_RED_SIZE_EXT:
+   case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
+      if (baseFormat == GL_RGB || baseFormat == GL_RGBA ||
+	  baseFormat == GL_RG || baseFormat == GL_RED)
+         return _mesa_get_format_bits(format, pname);
+      else
+         return 0;
+   case GL_RENDERBUFFER_GREEN_SIZE_EXT:
+   case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
+      if (baseFormat == GL_RGB || baseFormat == GL_RGBA || baseFormat == GL_RG)
+         return _mesa_get_format_bits(format, pname);
+      else
+         return 0;
+   case GL_RENDERBUFFER_BLUE_SIZE_EXT:
+   case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
+      if (baseFormat == GL_RGB || baseFormat == GL_RGBA)
+         return _mesa_get_format_bits(format, pname);
+      else
+         return 0;
+   case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
+   case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
+      if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA ||
+	  baseFormat == GL_LUMINANCE_ALPHA)
+         return _mesa_get_format_bits(format, pname);
+      else
+         return 0;
+   case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
+   case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
+      if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL)
+         return _mesa_get_format_bits(format, pname);
+      else
+         return 0;
+   case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
+   case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
+      if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL)
+         return _mesa_get_format_bits(format, pname);
+      else
+         return 0;
+   default:
+      return 0;
+   }
+}
+
+
+
+void GLAPIENTRY
+_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
+                             GLsizei width, GLsizei height)
+{
+   /* GL_ARB_fbo says calling this function is equivalent to calling
+    * glRenderbufferStorageMultisample() with samples=0.  We pass in
+    * a token value here just for error reporting purposes.
+    */
+   renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES);
+}
+
+
+void GLAPIENTRY
+_mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples,
+                                     GLenum internalFormat,
+                                     GLsizei width, GLsizei height)
+{
+   renderbuffer_storage(target, internalFormat, width, height, samples);
+}
+
+
+/**
+ * OpenGL ES version of glRenderBufferStorage.
+ */
+void GLAPIENTRY
+_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
+			   GLsizei width, GLsizei height)
+{
+   switch (internalFormat) {
+   case GL_RGB565:
+      /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
+      /* choose a closest format */
+      internalFormat = GL_RGB5;
+      break;
+   default:
+      break;
+   }
+
+   renderbuffer_storage(target, internalFormat, width, height, 0);
+}
+
+
+void GLAPIENTRY
+_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
+{
+   struct gl_renderbuffer *rb;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (target != GL_RENDERBUFFER_EXT) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetRenderbufferParameterivEXT(target)");
+      return;
+   }
+
+   rb = ctx->CurrentRenderbuffer;
+   if (!rb) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glGetRenderbufferParameterivEXT");
+      return;
+   }
+
+   /* No need to flush here since we're just quering state which is
+    * not effected by rendering.
+    */
+
+   switch (pname) {
+   case GL_RENDERBUFFER_WIDTH_EXT:
+      *params = rb->Width;
+      return;
+   case GL_RENDERBUFFER_HEIGHT_EXT:
+      *params = rb->Height;
+      return;
+   case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
+      *params = rb->InternalFormat;
+      return;
+   case GL_RENDERBUFFER_RED_SIZE_EXT:
+   case GL_RENDERBUFFER_GREEN_SIZE_EXT:
+   case GL_RENDERBUFFER_BLUE_SIZE_EXT:
+   case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
+   case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
+   case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
+      *params = get_component_bits(pname, rb->_BaseFormat, rb->Format);
+      break;
+   case GL_RENDERBUFFER_SAMPLES:
+      if (ctx->Extensions.ARB_framebuffer_object) {
+         *params = rb->NumSamples;
+         break;
+      }
+      /* fallthrough */
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetRenderbufferParameterivEXT(target)");
+      return;
+   }
+}
+
+
+GLboolean GLAPIENTRY
+_mesa_IsFramebufferEXT(GLuint framebuffer)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+   if (framebuffer) {
+      struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);
+      if (rb != NULL && rb != &DummyFramebuffer)
+         return GL_TRUE;
+   }
+   return GL_FALSE;
+}
+
+
+/**
+ * Check if any of the attachments of the given framebuffer are textures
+ * (render to texture).  Call ctx->Driver.RenderTexture() for such
+ * attachments.
+ */
+static void
+check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+   GLuint i;
+   ASSERT(ctx->Driver.RenderTexture);
+
+   if (fb->Name == 0)
+      return; /* can't render to texture with winsys framebuffers */
+
+   for (i = 0; i < BUFFER_COUNT; i++) {
+      struct gl_renderbuffer_attachment *att = fb->Attachment + i;
+      if (att->Texture && _mesa_get_attachment_teximage(att)) {
+         ctx->Driver.RenderTexture(ctx, fb, att);
+      }
+   }
+}
+
+
+/**
+ * Examine all the framebuffer's attachments to see if any are textures.
+ * If so, call ctx->Driver.FinishRenderTexture() for each texture to
+ * notify the device driver that the texture image may have changed.
+ */
+static void
+check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+   if (fb->Name == 0)
+      return; /* can't render to texture with winsys framebuffers */
+
+   if (ctx->Driver.FinishRenderTexture) {
+      GLuint i;
+      for (i = 0; i < BUFFER_COUNT; i++) {
+         struct gl_renderbuffer_attachment *att = fb->Attachment + i;
+         if (att->Texture && att->Renderbuffer) {
+            ctx->Driver.FinishRenderTexture(ctx, att);
+         }
+      }
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
+{
+   struct gl_framebuffer *newDrawFb, *newReadFb;
+   struct gl_framebuffer *oldDrawFb, *oldReadFb;
+   GLboolean bindReadBuf, bindDrawBuf;
+   GET_CURRENT_CONTEXT(ctx);
+
+#ifdef DEBUG
+   if (ctx->Extensions.ARB_framebuffer_object) {
+      ASSERT(ctx->Extensions.EXT_framebuffer_object);
+      ASSERT(ctx->Extensions.EXT_framebuffer_blit);
+   }
+#endif
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (!ctx->Extensions.EXT_framebuffer_object) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBindFramebufferEXT(unsupported)");
+      return;
+   }
+
+   switch (target) {
+#if FEATURE_EXT_framebuffer_blit
+   case GL_DRAW_FRAMEBUFFER_EXT:
+      if (!ctx->Extensions.EXT_framebuffer_blit) {
+         _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
+         return;
+      }
+      bindDrawBuf = GL_TRUE;
+      bindReadBuf = GL_FALSE;
+      break;
+   case GL_READ_FRAMEBUFFER_EXT:
+      if (!ctx->Extensions.EXT_framebuffer_blit) {
+         _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
+         return;
+      }
+      bindDrawBuf = GL_FALSE;
+      bindReadBuf = GL_TRUE;
+      break;
+#endif
+   case GL_FRAMEBUFFER_EXT:
+      bindDrawBuf = GL_TRUE;
+      bindReadBuf = GL_TRUE;
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
+      return;
+   }
+
+   if (framebuffer) {
+      /* Binding a user-created framebuffer object */
+      newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);
+      if (newDrawFb == &DummyFramebuffer) {
+         /* ID was reserved, but no real framebuffer object made yet */
+         newDrawFb = NULL;
+      }
+      else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {
+         /* All FBO IDs must be Gen'd */
+         _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");
+         return;
+      }
+
+      if (!newDrawFb) {
+	 /* create new framebuffer object */
+	 newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
+	 if (!newDrawFb) {
+	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
+	    return;
+	 }
+         _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);
+      }
+      newReadFb = newDrawFb;
+   }
+   else {
+      /* Binding the window system framebuffer (which was originally set
+       * with MakeCurrent).
+       */
+      newDrawFb = ctx->WinSysDrawBuffer;
+      newReadFb = ctx->WinSysReadBuffer;
+   }
+
+   ASSERT(newDrawFb);
+   ASSERT(newDrawFb != &DummyFramebuffer);
+
+   /* save pointers to current/old framebuffers */
+   oldDrawFb = ctx->DrawBuffer;
+   oldReadFb = ctx->ReadBuffer;
+
+   /* check if really changing bindings */
+   if (oldDrawFb == newDrawFb)
+      bindDrawBuf = GL_FALSE;
+   if (oldReadFb == newReadFb)
+      bindReadBuf = GL_FALSE;
+
+   /*
+    * OK, now bind the new Draw/Read framebuffers, if they're changing.
+    *
+    * We also check if we're beginning and/or ending render-to-texture.
+    * When a framebuffer with texture attachments is unbound, call
+    * ctx->Driver.FinishRenderTexture().
+    * When a framebuffer with texture attachments is bound, call
+    * ctx->Driver.RenderTexture().
+    *
+    * Note that if the ReadBuffer has texture attachments we don't consider
+    * that a render-to-texture case.
+    */
+   if (bindReadBuf) {
+      FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+      /* check if old readbuffer was render-to-texture */
+      check_end_texture_render(ctx, oldReadFb);
+
+      _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);
+   }
+
+   if (bindDrawBuf) {
+      FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+      /* check if old read/draw buffers were render-to-texture */
+      if (!bindReadBuf)
+         check_end_texture_render(ctx, oldReadFb);
+
+      if (oldDrawFb != oldReadFb)
+         check_end_texture_render(ctx, oldDrawFb);
+
+      /* check if newly bound framebuffer has any texture attachments */
+      check_begin_texture_render(ctx, newDrawFb);
+
+      _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);
+   }
+
+   if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {
+      ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
+{
+   GLint i;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   for (i = 0; i < n; i++) {
+      if (framebuffers[i] > 0) {
+	 struct gl_framebuffer *fb;
+	 fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);
+	 if (fb) {
+            ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
+
+            /* check if deleting currently bound framebuffer object */
+            if (ctx->Extensions.EXT_framebuffer_blit) {
+               /* separate draw/read binding points */
+               if (fb == ctx->DrawBuffer) {
+                  /* bind default */
+                  ASSERT(fb->RefCount >= 2);
+                  _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
+               }
+               if (fb == ctx->ReadBuffer) {
+                  /* bind default */
+                  ASSERT(fb->RefCount >= 2);
+                  _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
+               }
+            }
+            else {
+               /* only one binding point for read/draw buffers */
+               if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {
+                  /* bind default */
+                  ASSERT(fb->RefCount >= 2);
+                  _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+               }    
+            }
+
+	    /* remove from hash table immediately, to free the ID */
+	    _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
+
+            if (fb != &DummyFramebuffer) {
+               /* But the object will not be freed until it's no longer
+                * bound in any context.
+                */
+               _mesa_reference_framebuffer(&fb, NULL);
+	    }
+	 }
+      }
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLuint first;
+   GLint i;
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   if (n < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
+      return;
+   }
+
+   if (!framebuffers)
+      return;
+
+   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
+
+   for (i = 0; i < n; i++) {
+      GLuint name = first + i;
+      framebuffers[i] = name;
+      /* insert dummy placeholder into hash table */
+      _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
+      _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);
+      _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
+   }
+}
+
+
+
+GLenum GLAPIENTRY
+_mesa_CheckFramebufferStatusEXT(GLenum target)
+{
+   struct gl_framebuffer *buffer;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
+
+   buffer = get_framebuffer_target(ctx, target);
+   if (!buffer) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
+      return 0;
+   }
+
+   if (buffer->Name == 0) {
+      /* The window system / default framebuffer is always complete */
+      return GL_FRAMEBUFFER_COMPLETE_EXT;
+   }
+
+   /* No need to flush here */
+
+   if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {
+      _mesa_test_framebuffer_completeness(ctx, buffer);
+   }
+
+   return buffer->_Status;
+}
+
+
+
+/**
+ * Common code called by glFramebufferTexture1D/2D/3DEXT().
+ */
+static void
+framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target, 
+                    GLenum attachment, GLenum textarget, GLuint texture,
+                    GLint level, GLint zoffset)
+{
+   struct gl_renderbuffer_attachment *att;
+   struct gl_texture_object *texObj = NULL;
+   struct gl_framebuffer *fb;
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   fb = get_framebuffer_target(ctx, target);
+   if (!fb) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glFramebufferTexture%sEXT(target=0x%x)", caller, target);
+      return;
+   }
+
+   /* check framebuffer binding */
+   if (fb->Name == 0) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glFramebufferTexture%sEXT", caller);
+      return;
+   }
+
+
+   /* The textarget, level, and zoffset parameters are only validated if
+    * texture is non-zero.
+    */
+   if (texture) {
+      GLboolean err = GL_TRUE;
+
+      texObj = _mesa_lookup_texture(ctx, texture);
+      if (texObj != NULL) {
+         if (textarget == 0) {
+            /* XXX what's the purpose of this? */
+            err = (texObj->Target != GL_TEXTURE_3D) &&
+                (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&
+                (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
+         }
+         else {
+            err = (texObj->Target == GL_TEXTURE_CUBE_MAP)
+                ? !IS_CUBE_FACE(textarget)
+                : (texObj->Target != textarget);
+         }
+      }
+      else {
+         /* can't render to a non-existant texture */
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glFramebufferTexture%sEXT(non existant texture)",
+                     caller);
+         return;
+      }
+
+      if (err) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glFramebufferTexture%sEXT(texture target mismatch)",
+                     caller);
+         return;
+      }
+
+      if (texObj->Target == GL_TEXTURE_3D) {
+         const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
+         if (zoffset < 0 || zoffset >= maxSize) {
+            _mesa_error(ctx, GL_INVALID_VALUE,
+                        "glFramebufferTexture%sEXT(zoffset)", caller);
+            return;
+         }
+      }
+      else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||
+               (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
+         if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {
+            _mesa_error(ctx, GL_INVALID_VALUE,
+                        "glFramebufferTexture%sEXT(layer)", caller);
+            return;
+         }
+      }
+
+      if ((level < 0) || 
+          (level >= _mesa_max_texture_levels(ctx, texObj->Target))) {
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glFramebufferTexture%sEXT(level)", caller);
+         return;
+      }
+   }
+
+   att = _mesa_get_attachment(ctx, fb, attachment);
+   if (att == NULL) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glFramebufferTexture%sEXT(attachment)", caller);
+      return;
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   _glthread_LOCK_MUTEX(fb->Mutex);
+   if (texObj) {
+      _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,
+                                   level, zoffset);
+      /* Set the render-to-texture flag.  We'll check this flag in
+       * glTexImage() and friends to determine if we need to revalidate
+       * any FBOs that might be rendering into this texture.
+       * This flag never gets cleared since it's non-trivial to determine
+       * when all FBOs might be done rendering to this texture.  That's OK
+       * though since it's uncommon to render to a texture then repeatedly
+       * call glTexImage() to change images in the texture.
+       */
+      texObj->_RenderToTexture = GL_TRUE;
+   }
+   else {
+      _mesa_remove_attachment(ctx, att);
+   }
+
+   invalidate_framebuffer(fb);
+
+   _glthread_UNLOCK_MUTEX(fb->Mutex);
+}
+
+
+
+void GLAPIENTRY
+_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
+                              GLenum textarget, GLuint texture, GLint level)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if ((texture != 0) && (textarget != GL_TEXTURE_1D)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glFramebufferTexture1DEXT(textarget)");
+      return;
+   }
+
+   framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,
+                       level, 0);
+}
+
+
+void GLAPIENTRY
+_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
+                              GLenum textarget, GLuint texture, GLint level)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if ((texture != 0) &&
+       (textarget != GL_TEXTURE_2D) &&
+       (textarget != GL_TEXTURE_RECTANGLE_ARB) &&
+       (!IS_CUBE_FACE(textarget))) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glFramebufferTexture2DEXT(textarget=0x%x)", textarget);
+      return;
+   }
+
+   framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,
+                       level, 0);
+}
+
+
+void GLAPIENTRY
+_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
+                              GLenum textarget, GLuint texture,
+                              GLint level, GLint zoffset)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glFramebufferTexture3DEXT(textarget)");
+      return;
+   }
+
+   framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,
+                       level, zoffset);
+}
+
+
+void GLAPIENTRY
+_mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,
+                                 GLuint texture, GLint level, GLint layer)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,
+                       level, layer);
+}
+
+
+void GLAPIENTRY
+_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
+                                 GLenum renderbufferTarget,
+                                 GLuint renderbuffer)
+{
+   struct gl_renderbuffer_attachment *att;
+   struct gl_framebuffer *fb;
+   struct gl_renderbuffer *rb;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   fb = get_framebuffer_target(ctx, target);
+   if (!fb) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)");
+      return;
+   }
+
+   if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glFramebufferRenderbufferEXT(renderbufferTarget)");
+      return;
+   }
+
+   if (fb->Name == 0) {
+      /* Can't attach new renderbuffers to a window system framebuffer */
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
+      return;
+   }
+
+   att = _mesa_get_attachment(ctx, fb, attachment);
+   if (att == NULL) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glFramebufferRenderbufferEXT(invalid attachment %s)",
+                  _mesa_lookup_enum_by_nr(attachment));
+      return;
+   }
+
+   if (renderbuffer) {
+      rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
+      if (!rb) {
+	 _mesa_error(ctx, GL_INVALID_OPERATION,
+		     "glFramebufferRenderbufferEXT(non-existant"
+                     " renderbuffer %u)", renderbuffer);
+	 return;
+      }
+      else if (rb == &DummyRenderbuffer) {
+         /* This is what NVIDIA does */
+	 _mesa_error(ctx, GL_INVALID_VALUE,
+		     "glFramebufferRenderbufferEXT(renderbuffer %u)",
+                     renderbuffer);
+	 return;
+      }
+   }
+   else {
+      /* remove renderbuffer attachment */
+      rb = NULL;
+   }
+
+   if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&
+       rb && rb->Format != MESA_FORMAT_NONE) {
+      /* make sure the renderbuffer is a depth/stencil format */
+      const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
+      if (baseFormat != GL_DEPTH_STENCIL) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glFramebufferRenderbufferEXT(renderbuffer"
+                     " is not DEPTH_STENCIL format)");
+         return;
+      }
+   }
+
+
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   assert(ctx->Driver.FramebufferRenderbuffer);
+   ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);
+
+   /* Some subsequent GL commands may depend on the framebuffer's visual
+    * after the binding is updated.  Update visual info now.
+    */
+   _mesa_update_framebuffer_visual(ctx, fb);
+}
+
+
+void GLAPIENTRY
+_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
+                                             GLenum pname, GLint *params)
+{
+   const struct gl_renderbuffer_attachment *att;
+   struct gl_framebuffer *buffer;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+   buffer = get_framebuffer_target(ctx, target);
+   if (!buffer) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetFramebufferAttachmentParameterivEXT(target)");
+      return;
+   }
+
+   if (buffer->Name == 0) {
+      /* the default / window-system FBO */
+      att = _mesa_get_fb0_attachment(ctx, buffer, attachment);
+   }
+   else {
+      /* user-created framebuffer FBO */
+      att = _mesa_get_attachment(ctx, buffer, attachment);
+   }
+
+   if (att == NULL) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetFramebufferAttachmentParameterivEXT(attachment)");
+      return;
+   }
+
+   if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
+      /* the depth and stencil attachments must point to the same buffer */
+      const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;
+      depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);
+      stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);
+      if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
+                     " attachments differ)");
+         return;
+      }
+   }
+
+   /* No need to flush here */
+
+   switch (pname) {
+   case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
+      *params = buffer->Name == 0 ? GL_FRAMEBUFFER_DEFAULT : att->Type;
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
+      if (att->Type == GL_RENDERBUFFER_EXT) {
+	 *params = att->Renderbuffer->Name;
+      }
+      else if (att->Type == GL_TEXTURE) {
+	 *params = att->Texture->Name;
+      }
+      else {
+         assert(att->Type == GL_NONE);
+         *params = 0;
+      }
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
+      if (att->Type == GL_TEXTURE) {
+	 *params = att->TextureLevel;
+      }
+      else {
+	 _mesa_error(ctx, GL_INVALID_ENUM,
+		     "glGetFramebufferAttachmentParameterivEXT(pname)");
+      }
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
+      if (att->Type == GL_TEXTURE) {
+         if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {
+            *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
+         }
+         else {
+            *params = 0;
+         }
+      }
+      else {
+	 _mesa_error(ctx, GL_INVALID_ENUM,
+		     "glGetFramebufferAttachmentParameterivEXT(pname)");
+      }
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
+      if (att->Type == GL_TEXTURE) {
+         if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {
+            *params = att->Zoffset;
+         }
+         else {
+            *params = 0;
+         }
+      }
+      else {
+	 _mesa_error(ctx, GL_INVALID_ENUM,
+		     "glGetFramebufferAttachmentParameterivEXT(pname)");
+      }
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
+      if (!ctx->Extensions.ARB_framebuffer_object) {
+         _mesa_error(ctx, GL_INVALID_ENUM,
+                     "glGetFramebufferAttachmentParameterivEXT(pname)");
+      }
+      else {
+         if (ctx->Extensions.EXT_framebuffer_sRGB && ctx->Const.sRGBCapable) {
+            *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);
+         }
+         else {
+            /* According to ARB_framebuffer_sRGB, we should return LINEAR
+             * if the sRGB conversion is unsupported. */
+            *params = GL_LINEAR;
+         }
+      }
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
+      if (!ctx->Extensions.ARB_framebuffer_object) {
+         _mesa_error(ctx, GL_INVALID_ENUM,
+                     "glGetFramebufferAttachmentParameterivEXT(pname)");
+         return;
+      }
+      else {
+         gl_format format = att->Renderbuffer->Format;
+         if (format == MESA_FORMAT_CI8 || format == MESA_FORMAT_S8) {
+            /* special cases */
+            *params = GL_INDEX;
+         }
+         else {
+            *params = _mesa_get_format_datatype(format);
+         }
+      }
+      return;
+   case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
+   case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
+   case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
+   case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
+   case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
+   case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
+      if (!ctx->Extensions.ARB_framebuffer_object) {
+         _mesa_error(ctx, GL_INVALID_ENUM,
+                     "glGetFramebufferAttachmentParameterivEXT(pname)");
+      }
+      else if (att->Texture) {
+         const struct gl_texture_image *texImage =
+            _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,
+                                   att->TextureLevel);
+         if (texImage) {
+            *params = get_component_bits(pname, texImage->_BaseFormat,
+                                         texImage->TexFormat);
+         }
+         else {
+            *params = 0;
+         }
+      }
+      else if (att->Renderbuffer) {
+         *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,
+                                      att->Renderbuffer->Format);
+      }
+      else {
+         *params = 0;
+      }
+      return;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetFramebufferAttachmentParameterivEXT(pname)");
+      return;
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_GenerateMipmapEXT(GLenum target)
+{
+   struct gl_texture_object *texObj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   switch (target) {
+   case GL_TEXTURE_1D:
+   case GL_TEXTURE_2D:
+   case GL_TEXTURE_3D:
+   case GL_TEXTURE_CUBE_MAP:
+      /* OK, legal value */
+      break;
+   default:
+      /* XXX need to implement GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY */
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)");
+      return;
+   }
+
+   texObj = _mesa_get_current_tex_object(ctx, target);
+
+   if (texObj->BaseLevel >= texObj->MaxLevel) {
+      /* nothing to do */
+      return;
+   }
+
+   if (texObj->Target == GL_TEXTURE_CUBE_MAP &&
+       !_mesa_cube_complete(texObj)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glGenerateMipmap(incomplete cube map)");
+      return;
+   }
+
+   _mesa_lock_texture(ctx, texObj);
+   if (target == GL_TEXTURE_CUBE_MAP) {
+      GLuint face;
+      for (face = 0; face < 6; face++)
+	 ctx->Driver.GenerateMipmap(ctx,
+				    GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,
+				    texObj);
+   }
+   else {
+      ctx->Driver.GenerateMipmap(ctx, target, texObj);
+   }
+   _mesa_unlock_texture(ctx, texObj);
+}
+
+
+#if FEATURE_EXT_framebuffer_blit
+
+static const struct gl_renderbuffer_attachment *
+find_attachment(const struct gl_framebuffer *fb,
+                const struct gl_renderbuffer *rb)
+{
+   GLuint i;
+   for (i = 0; i < Elements(fb->Attachment); i++) {
+      if (fb->Attachment[i].Renderbuffer == rb)
+         return &fb->Attachment[i];
+   }
+   return NULL;
+}
+
+
+
+/**
+ * Blit rectangular region, optionally from one framebuffer to another.
+ *
+ * Note, if the src buffer is multisampled and the dest is not, this is
+ * when the samples must be resolved to a single color.
+ */
+void GLAPIENTRY
+_mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+                         GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+                         GLbitfield mask, GLenum filter)
+{
+   const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
+                                     GL_DEPTH_BUFFER_BIT |
+                                     GL_STENCIL_BUFFER_BIT);
+   const struct gl_framebuffer *readFb, *drawFb;
+   const struct gl_renderbuffer *colorReadRb, *colorDrawRb;
+   GET_CURRENT_CONTEXT(ctx);
+
+   ASSERT_OUTSIDE_BEGIN_END(ctx);
+   FLUSH_VERTICES(ctx, _NEW_BUFFERS);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx,
+                  "glBlitFramebuffer(%d, %d, %d, %d,  %d, %d, %d, %d, 0x%x, %s)\n",
+                  srcX0, srcY0, srcX1, srcY1,
+                  dstX0, dstY0, dstX1, dstY1,
+                  mask, _mesa_lookup_enum_by_nr(filter));
+
+   if (ctx->NewState) {
+      _mesa_update_state(ctx);
+   }
+
+   readFb = ctx->ReadBuffer;
+   drawFb = ctx->DrawBuffer;
+
+   if (!readFb || !drawFb) {
+      /* This will normally never happen but someday we may want to
+       * support MakeCurrent() with no drawables.
+       */
+      return;
+   }
+
+   /* check for complete framebuffers */
+   if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
+       readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+      _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
+                  "glBlitFramebufferEXT(incomplete draw/read buffers)");
+      return;
+   }
+
+   if (filter != GL_NEAREST && filter != GL_LINEAR) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");
+      return;
+   }
+
+   if (mask & ~legalMaskBits) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
+      return;
+   }
+
+   /* depth/stencil must be blitted with nearest filtering */
+   if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
+        && filter != GL_NEAREST) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+             "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
+      return;
+   }
+
+   /* get color read/draw renderbuffers */
+   if (mask & GL_COLOR_BUFFER_BIT) {
+      colorReadRb = readFb->_ColorReadBuffer;
+      colorDrawRb = drawFb->_ColorDrawBuffers[0];
+   }
+   else {
+      colorReadRb = colorDrawRb = NULL;
+   }
+
+   if (mask & GL_STENCIL_BUFFER_BIT) {
+      struct gl_renderbuffer *readRb = readFb->_StencilBuffer;
+      struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer;
+      if (!readRb ||
+          !drawRb ||
+          _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) != 
+          _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glBlitFramebufferEXT(stencil buffer size mismatch)");
+         return;
+      }
+   }
+
+   if (mask & GL_DEPTH_BUFFER_BIT) {
+      struct gl_renderbuffer *readRb = readFb->_DepthBuffer;
+      struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer;
+      if (!readRb ||
+          !drawRb ||
+          _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) != 
+          _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                     "glBlitFramebufferEXT(depth buffer size mismatch)");
+         return;
+      }
+   }
+
+   if (readFb->Visual.samples > 0 &&
+       drawFb->Visual.samples > 0 &&
+       readFb->Visual.samples != drawFb->Visual.samples) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glBlitFramebufferEXT(mismatched samples");
+      return;
+   }
+
+   /* extra checks for multisample copies... */
+   if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
+      /* src and dest region sizes must be the same */
+      if (srcX1 - srcX0 != dstX1 - dstX0 ||
+          srcY1 - srcY0 != dstY1 - dstY0) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
+         return;
+      }
+
+      /* color formats must match */
+      if (colorReadRb &&
+          colorDrawRb &&
+          colorReadRb->Format != colorDrawRb->Format) {
+         _mesa_error(ctx, GL_INVALID_OPERATION,
+                "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
+         return;
+      }
+   }
+
+   if (!ctx->Extensions.EXT_framebuffer_blit) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");
+      return;
+   }
+
+   /* Debug code */
+   if (DEBUG_BLIT) {
+      printf("glBlitFramebuffer(%d, %d, %d, %d,  %d, %d, %d, %d,"
+	     " 0x%x, 0x%x)\n",
+	     srcX0, srcY0, srcX1, srcY1,
+	     dstX0, dstY0, dstX1, dstY1,
+	     mask, filter);
+      if (colorReadRb) {
+         const struct gl_renderbuffer_attachment *att;
+
+         att = find_attachment(readFb, colorReadRb);
+         printf("  Src FBO %u  RB %u (%dx%d)  ",
+		readFb->Name, colorReadRb->Name,
+		colorReadRb->Width, colorReadRb->Height);
+         if (att && att->Texture) {
+            printf("Tex %u  tgt 0x%x  level %u  face %u",
+		   att->Texture->Name,
+		   att->Texture->Target,
+		   att->TextureLevel,
+		   att->CubeMapFace);
+         }
+         printf("\n");
+
+         att = find_attachment(drawFb, colorDrawRb);
+         printf("  Dst FBO %u  RB %u (%dx%d)  ",
+		drawFb->Name, colorDrawRb->Name,
+		colorDrawRb->Width, colorDrawRb->Height);
+         if (att && att->Texture) {
+            printf("Tex %u  tgt 0x%x  level %u  face %u",
+		   att->Texture->Name,
+		   att->Texture->Target,
+		   att->TextureLevel,
+		   att->CubeMapFace);
+         }
+         printf("\n");
+      }
+   }
+
+   ASSERT(ctx->Driver.BlitFramebuffer);
+   ctx->Driver.BlitFramebuffer(ctx,
+                               srcX0, srcY0, srcX1, srcY1,
+                               dstX0, dstY0, dstX1, dstY1,
+                               mask, filter);
+}
+#endif /* FEATURE_EXT_framebuffer_blit */
+
+#if FEATURE_ARB_geometry_shader4
+void GLAPIENTRY
+_mesa_FramebufferTextureARB(GLenum target, GLenum attachment,
+                            GLuint texture, GLint level)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   _mesa_error(ctx, GL_INVALID_OPERATION,
+               "glFramebufferTextureARB "
+               "not implemented!");
+}
+
+void GLAPIENTRY
+_mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,
+                                GLuint texture, GLint level, GLenum face)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   _mesa_error(ctx, GL_INVALID_OPERATION,
+               "glFramebufferTextureFaceARB "
+               "not implemented!");
+}
+#endif /* FEATURE_ARB_geometry_shader4 */
diff --git a/mesalib/src/mesa/main/formats.c b/mesalib/src/mesa/main/formats.c
index e62170b71..4c31ccb76 100644
--- a/mesalib/src/mesa/main/formats.c
+++ b/mesalib/src/mesa/main/formats.c
@@ -677,7 +677,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
    {
       MESA_FORMAT_LUMINANCE_FLOAT32,
       "MESA_FORMAT_LUMINANCE_FLOAT32",
-      GL_ALPHA,
+      GL_LUMINANCE,
       GL_FLOAT,
       0, 0, 0, 0,
       32, 0, 0, 0, 0,
@@ -686,7 +686,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
    {
       MESA_FORMAT_LUMINANCE_FLOAT16,
       "MESA_FORMAT_LUMINANCE_FLOAT16",
-      GL_ALPHA,
+      GL_LUMINANCE,
       GL_FLOAT,
       0, 0, 0, 0,
       16, 0, 0, 0, 0,
@@ -728,6 +728,42 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
       0, 16, 0, 0, 0,
       1, 1, 2
    },
+   {
+      MESA_FORMAT_R_FLOAT32,
+      "MESA_FORMAT_R_FLOAT32",
+      GL_RED,
+      GL_FLOAT,
+      32, 0, 0, 0,
+      0, 0, 0, 0, 0,
+      1, 1, 4
+   },
+   {
+      MESA_FORMAT_R_FLOAT16,
+      "MESA_FORMAT_R_FLOAT16",
+      GL_RED,
+      GL_FLOAT,
+      16, 0, 0, 0,
+      0, 0, 0, 0, 0,
+      1, 1, 2
+   },
+   {
+      MESA_FORMAT_RG_FLOAT32,
+      "MESA_FORMAT_RG_FLOAT32",
+      GL_RG,
+      GL_FLOAT,
+      32, 32, 0, 0,
+      0, 0, 0, 0, 0,
+      1, 1, 8
+   },
+   {
+      MESA_FORMAT_RG_FLOAT16,
+      "MESA_FORMAT_RG_FLOAT16",
+      GL_RG,
+      GL_FLOAT,
+      16, 16, 0, 0,
+      0, 0, 0, 0, 0,
+      1, 1, 4
+   },
 
    /* unnormalized signed int formats */
    {
@@ -1714,22 +1750,26 @@ _mesa_format_to_type_and_comps(gl_format format,
       *comps = 3;
       return;
    case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
+   case MESA_FORMAT_RG_FLOAT32:
       *datatype = GL_FLOAT;
       *comps = 2;
       return;
    case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
+   case MESA_FORMAT_RG_FLOAT16:
       *datatype = GL_HALF_FLOAT_ARB;
       *comps = 2;
       return;
    case MESA_FORMAT_ALPHA_FLOAT32:
    case MESA_FORMAT_LUMINANCE_FLOAT32:
    case MESA_FORMAT_INTENSITY_FLOAT32:
+   case MESA_FORMAT_R_FLOAT32:
       *datatype = GL_FLOAT;
       *comps = 1;
       return;
    case MESA_FORMAT_ALPHA_FLOAT16:
    case MESA_FORMAT_LUMINANCE_FLOAT16:
    case MESA_FORMAT_INTENSITY_FLOAT16:
+   case MESA_FORMAT_R_FLOAT16:
       *datatype = GL_HALF_FLOAT_ARB;
       *comps = 1;
       return;
diff --git a/mesalib/src/mesa/main/formats.h b/mesalib/src/mesa/main/formats.h
index e0c2acbb9..15ac62cfe 100644
--- a/mesalib/src/mesa/main/formats.h
+++ b/mesalib/src/mesa/main/formats.h
@@ -142,6 +142,10 @@ typedef enum
    MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,
    MESA_FORMAT_INTENSITY_FLOAT32,
    MESA_FORMAT_INTENSITY_FLOAT16,
+   MESA_FORMAT_R_FLOAT32,
+   MESA_FORMAT_R_FLOAT16,
+   MESA_FORMAT_RG_FLOAT32,
+   MESA_FORMAT_RG_FLOAT16,
    /*@}*/
 
    /**
diff --git a/mesalib/src/mesa/main/framebuffer.c b/mesalib/src/mesa/main/framebuffer.c
index b741c51ab..66c9bd910 100644
--- a/mesalib/src/mesa/main/framebuffer.c
+++ b/mesalib/src/mesa/main/framebuffer.c
@@ -1,1085 +1,1097 @@
-/*

- * Mesa 3-D graphics library

- * Version:  7.2

- *

- * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.

- *

- * Permission is hereby granted, free of charge, to any person obtaining a

- * copy of this software and associated documentation files (the "Software"),

- * to deal in the Software without restriction, including without limitation

- * the rights to use, copy, modify, merge, publish, distribute, sublicense,

- * and/or sell copies of the Software, and to permit persons to whom the

- * Software is furnished to do so, subject to the following conditions:

- *

- * The above copyright notice and this permission notice shall be included

- * in all copies or substantial portions of the Software.

- *

- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

- */

-

-

-/**

- * Functions for allocating/managing framebuffers and renderbuffers.

- * Also, routines for reading/writing renderbuffer data as ubytes,

- * ushorts, uints, etc.

- */

-

-

-#include "glheader.h"

-#include "imports.h"

-#include "buffers.h"

-#include "context.h"

-#include "depthstencil.h"

-#include "enums.h"

-#include "formats.h"

-#include "macros.h"

-#include "mtypes.h"

-#include "fbobject.h"

-#include "framebuffer.h"

-#include "renderbuffer.h"

-#include "texobj.h"

-

-

-

-/**

- * Compute/set the _DepthMax field for the given framebuffer.

- * This value depends on the Z buffer resolution.

- */

-static void

-compute_depth_max(struct gl_framebuffer *fb)

-{

-   if (fb->Visual.depthBits == 0) {

-      /* Special case.  Even if we don't have a depth buffer we need

-       * good values for DepthMax for Z vertex transformation purposes

-       * and for per-fragment fog computation.

-       */

-      fb->_DepthMax = (1 << 16) - 1;

-   }

-   else if (fb->Visual.depthBits < 32) {

-      fb->_DepthMax = (1 << fb->Visual.depthBits) - 1;

-   }

-   else {

-      /* Special case since shift values greater than or equal to the

-       * number of bits in the left hand expression's type are undefined.

-       */

-      fb->_DepthMax = 0xffffffff;

-   }

-   fb->_DepthMaxF = (GLfloat) fb->_DepthMax;

-

-   /* Minimum resolvable depth value, for polygon offset */

-   fb->_MRD = (GLfloat)1.0 / fb->_DepthMaxF;

-}

-

-/**

- * Create and initialize a gl_framebuffer object.

- * This is intended for creating _window_system_ framebuffers, not generic

- * framebuffer objects ala GL_EXT_framebuffer_object.

- *

- * \sa _mesa_new_framebuffer

- */

-struct gl_framebuffer *

-_mesa_create_framebuffer(const struct gl_config *visual)

-{

-   struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);

-   assert(visual);

-   if (fb) {

-      _mesa_initialize_window_framebuffer(fb, visual);

-   }

-   return fb;

-}

-

-

-/**

- * Allocate a new gl_framebuffer object.

- * This is the default function for ctx->Driver.NewFramebuffer().

- * This is for allocating user-created framebuffers, not window-system

- * framebuffers!

- * \sa _mesa_create_framebuffer

- */

-struct gl_framebuffer *

-_mesa_new_framebuffer(struct gl_context *ctx, GLuint name)

-{

-   struct gl_framebuffer *fb;

-   (void) ctx;

-   assert(name != 0);

-   fb = CALLOC_STRUCT(gl_framebuffer);

-   if (fb) {

-      _mesa_initialize_user_framebuffer(fb, name);

-   }

-   return fb;

-}

-

-

-/**

- * Initialize a gl_framebuffer object.  Typically used to initialize

- * window system-created framebuffers, not user-created framebuffers.

- * \sa _mesa_initialize_user_framebuffer

- */

-void

-_mesa_initialize_window_framebuffer(struct gl_framebuffer *fb,

-				     const struct gl_config *visual)

-{

-   assert(fb);

-   assert(visual);

-

-   memset(fb, 0, sizeof(struct gl_framebuffer));

-

-   _glthread_INIT_MUTEX(fb->Mutex);

-

-   fb->RefCount = 1;

-

-   /* save the visual */

-   fb->Visual = *visual;

-

-   /* Init read/draw renderbuffer state */

-   if (visual->doubleBufferMode) {

-      fb->_NumColorDrawBuffers = 1;

-      fb->ColorDrawBuffer[0] = GL_BACK;

-      fb->_ColorDrawBufferIndexes[0] = BUFFER_BACK_LEFT;

-      fb->ColorReadBuffer = GL_BACK;

-      fb->_ColorReadBufferIndex = BUFFER_BACK_LEFT;

-   }

-   else {

-      fb->_NumColorDrawBuffers = 1;

-      fb->ColorDrawBuffer[0] = GL_FRONT;

-      fb->_ColorDrawBufferIndexes[0] = BUFFER_FRONT_LEFT;

-      fb->ColorReadBuffer = GL_FRONT;

-      fb->_ColorReadBufferIndex = BUFFER_FRONT_LEFT;

-   }

-

-   fb->Delete = _mesa_destroy_framebuffer;

-   fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;

-

-   compute_depth_max(fb);

-}

-

-

-/**

- * Initialize a user-created gl_framebuffer object.

- * \sa _mesa_initialize_window_framebuffer

- */

-void

-_mesa_initialize_user_framebuffer(struct gl_framebuffer *fb, GLuint name)

-{

-   assert(fb);

-   assert(name);

-

-   memset(fb, 0, sizeof(struct gl_framebuffer));

-

-   fb->Name = name;

-   fb->RefCount = 1;

-   fb->_NumColorDrawBuffers = 1;

-   fb->ColorDrawBuffer[0] = GL_COLOR_ATTACHMENT0_EXT;

-   fb->_ColorDrawBufferIndexes[0] = BUFFER_COLOR0;

-   fb->ColorReadBuffer = GL_COLOR_ATTACHMENT0_EXT;

-   fb->_ColorReadBufferIndex = BUFFER_COLOR0;

-   fb->Delete = _mesa_destroy_framebuffer;

-   _glthread_INIT_MUTEX(fb->Mutex);

-}

-

-

-/**

- * Deallocate buffer and everything attached to it.

- * Typically called via the gl_framebuffer->Delete() method.

- */

-void

-_mesa_destroy_framebuffer(struct gl_framebuffer *fb)

-{

-   if (fb) {

-      _mesa_free_framebuffer_data(fb);

-      free(fb);

-   }

-}

-

-

-/**

- * Free all the data hanging off the given gl_framebuffer, but don't free

- * the gl_framebuffer object itself.

- */

-void

-_mesa_free_framebuffer_data(struct gl_framebuffer *fb)

-{

-   GLuint i;

-

-   assert(fb);

-   assert(fb->RefCount == 0);

-

-   _glthread_DESTROY_MUTEX(fb->Mutex);

-

-   for (i = 0; i < BUFFER_COUNT; i++) {

-      struct gl_renderbuffer_attachment *att = &fb->Attachment[i];

-      if (att->Renderbuffer) {

-         _mesa_reference_renderbuffer(&att->Renderbuffer, NULL);

-      }

-      if (att->Texture) {

-         _mesa_reference_texobj(&att->Texture, NULL);

-      }

-      ASSERT(!att->Renderbuffer);

-      ASSERT(!att->Texture);

-      att->Type = GL_NONE;

-   }

-

-   /* unbind _Depth/_StencilBuffer to decr ref counts */

-   _mesa_reference_renderbuffer(&fb->_DepthBuffer, NULL);

-   _mesa_reference_renderbuffer(&fb->_StencilBuffer, NULL);

-}

-

-

-/**

- * Set *ptr to point to fb, with refcounting and locking.

- */

-void

-_mesa_reference_framebuffer(struct gl_framebuffer **ptr,

-                            struct gl_framebuffer *fb)

-{

-   assert(ptr);

-   if (*ptr == fb) {

-      /* no change */

-      return;

-   }

-

-   if (*ptr) {

-      /* unreference old renderbuffer */

-      GLboolean deleteFlag = GL_FALSE;

-      struct gl_framebuffer *oldFb = *ptr;

-

-      _glthread_LOCK_MUTEX(oldFb->Mutex);

-      ASSERT(oldFb->RefCount > 0);

-      oldFb->RefCount--;

-      deleteFlag = (oldFb->RefCount == 0);

-      _glthread_UNLOCK_MUTEX(oldFb->Mutex);

-      

-      if (deleteFlag)

-         oldFb->Delete(oldFb);

-

-      *ptr = NULL;

-   }

-   assert(!*ptr);

-

-   if (fb) {

-      _glthread_LOCK_MUTEX(fb->Mutex);

-      fb->RefCount++;

-      _glthread_UNLOCK_MUTEX(fb->Mutex);

-      *ptr = fb;

-   }

-}

-

-

-/**

- * Resize the given framebuffer's renderbuffers to the new width and height.

- * This should only be used for window-system framebuffers, not

- * user-created renderbuffers (i.e. made with GL_EXT_framebuffer_object).

- * This will typically be called via ctx->Driver.ResizeBuffers() or directly

- * from a device driver.

- *

- * \note it's possible for ctx to be null since a window can be resized

- * without a currently bound rendering context.

- */

-void

-_mesa_resize_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb,

-                         GLuint width, GLuint height)

-{

-   GLuint i;

-

-   /* XXX I think we could check if the size is not changing

-    * and return early.

-    */

-

-   /* For window system framebuffers, Name is zero */

-   assert(fb->Name == 0);

-

-   for (i = 0; i < BUFFER_COUNT; i++) {

-      struct gl_renderbuffer_attachment *att = &fb->Attachment[i];

-      if (att->Type == GL_RENDERBUFFER_EXT && att->Renderbuffer) {

-         struct gl_renderbuffer *rb = att->Renderbuffer;

-         /* only resize if size is changing */

-         if (rb->Width != width || rb->Height != height) {

-            if (rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {

-               ASSERT(rb->Width == width);

-               ASSERT(rb->Height == height);

-            }

-            else {

-               _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");

-               /* no return */

-            }

-         }

-      }

-   }

-

-   if (fb->_DepthBuffer) {

-      struct gl_renderbuffer *rb = fb->_DepthBuffer;

-      if (rb->Width != width || rb->Height != height) {

-         if (!rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {

-            _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");

-         }

-      }

-   }

-

-   if (fb->_StencilBuffer) {

-      struct gl_renderbuffer *rb = fb->_StencilBuffer;

-      if (rb->Width != width || rb->Height != height) {

-         if (!rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {

-            _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");

-         }

-      }

-   }

-

-   fb->Width = width;

-   fb->Height = height;

-

-   if (ctx) {

-      /* update scissor / window bounds */

-      _mesa_update_draw_buffer_bounds(ctx);

-      /* Signal new buffer state so that swrast will update its clipping

-       * info (the CLIP_BIT flag).

-       */

-      ctx->NewState |= _NEW_BUFFERS;

-   }

-}

-

-

-

-/**

- * XXX THIS IS OBSOLETE - drivers should take care of detecting window

- * size changes and act accordingly, likely calling _mesa_resize_framebuffer().

- *

- * GL_MESA_resize_buffers extension.

- *

- * When this function is called, we'll ask the window system how large

- * the current window is.  If it's a new size, we'll call the driver's

- * ResizeBuffers function.  The driver will then resize its color buffers

- * as needed, and maybe call the swrast's routine for reallocating

- * swrast-managed depth/stencil/accum/etc buffers.

- * \note This function should only be called through the GL API, not

- * from device drivers (as was done in the past).

- */

-void

-_mesa_resizebuffers( struct gl_context *ctx )

-{

-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH( ctx );

-

-   if (MESA_VERBOSE & VERBOSE_API)

-      _mesa_debug(ctx, "glResizeBuffersMESA\n");

-

-   if (!ctx->Driver.GetBufferSize) {

-      return;

-   }

-

-   if (ctx->WinSysDrawBuffer) {

-      GLuint newWidth, newHeight;

-      struct gl_framebuffer *buffer = ctx->WinSysDrawBuffer;

-

-      assert(buffer->Name == 0);

-

-      /* ask device driver for size of output buffer */

-      ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight );

-

-      /* see if size of device driver's color buffer (window) has changed */

-      if (buffer->Width != newWidth || buffer->Height != newHeight) {

-         if (ctx->Driver.ResizeBuffers)

-            ctx->Driver.ResizeBuffers(ctx, buffer, newWidth, newHeight );

-      }

-   }

-

-   if (ctx->WinSysReadBuffer

-       && ctx->WinSysReadBuffer != ctx->WinSysDrawBuffer) {

-      GLuint newWidth, newHeight;

-      struct gl_framebuffer *buffer = ctx->WinSysReadBuffer;

-

-      assert(buffer->Name == 0);

-

-      /* ask device driver for size of read buffer */

-      ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight );

-

-      /* see if size of device driver's color buffer (window) has changed */

-      if (buffer->Width != newWidth || buffer->Height != newHeight) {

-         if (ctx->Driver.ResizeBuffers)

-            ctx->Driver.ResizeBuffers(ctx, buffer, newWidth, newHeight );

-      }

-   }

-

-   ctx->NewState |= _NEW_BUFFERS;  /* to update scissor / window bounds */

-}

-

-

-/*

- * XXX THIS IS OBSOLETE

- */

-void GLAPIENTRY

-_mesa_ResizeBuffersMESA( void )

-{

-   GET_CURRENT_CONTEXT(ctx);

-

-   if (ctx->Extensions.MESA_resize_buffers)

-      _mesa_resizebuffers( ctx );

-}

-

-

-

-/**

- * Examine all the framebuffer's renderbuffers to update the Width/Height

- * fields of the framebuffer.  If we have renderbuffers with different

- * sizes, set the framebuffer's width and height to the min size.

- * Note: this is only intended for user-created framebuffers, not

- * window-system framebuffes.

- */

-static void

-update_framebuffer_size(struct gl_context *ctx, struct gl_framebuffer *fb)

-{

-   GLuint minWidth = ~0, minHeight = ~0;

-   GLuint i;

-

-   /* user-created framebuffers only */

-   assert(fb->Name);

-

-   for (i = 0; i < BUFFER_COUNT; i++) {

-      struct gl_renderbuffer_attachment *att = &fb->Attachment[i];

-      const struct gl_renderbuffer *rb = att->Renderbuffer;

-      if (rb) {

-         minWidth = MIN2(minWidth, rb->Width);

-         minHeight = MIN2(minHeight, rb->Height);

-      }

-   }

-

-   if (minWidth != ~0) {

-      fb->Width = minWidth;

-      fb->Height = minHeight;

-   }

-   else {

-      fb->Width = 0;

-      fb->Height = 0;

-   }

-}

-

-

-/**

- * Update the context's current drawing buffer's Xmin, Xmax, Ymin, Ymax fields.

- * These values are computed from the buffer's width and height and

- * the scissor box, if it's enabled.

- * \param ctx  the GL context.

- */

-void

-_mesa_update_draw_buffer_bounds(struct gl_context *ctx)

-{

-   struct gl_framebuffer *buffer = ctx->DrawBuffer;

-

-   if (!buffer)

-      return;

-

-   if (buffer->Name) {

-      /* user-created framebuffer size depends on the renderbuffers */

-      update_framebuffer_size(ctx, buffer);

-   }

-

-   buffer->_Xmin = 0;

-   buffer->_Ymin = 0;

-   buffer->_Xmax = buffer->Width;

-   buffer->_Ymax = buffer->Height;

-

-   if (ctx->Scissor.Enabled) {

-      if (ctx->Scissor.X > buffer->_Xmin) {

-	 buffer->_Xmin = ctx->Scissor.X;

-      }

-      if (ctx->Scissor.Y > buffer->_Ymin) {

-	 buffer->_Ymin = ctx->Scissor.Y;

-      }

-      if (ctx->Scissor.X + ctx->Scissor.Width < buffer->_Xmax) {

-	 buffer->_Xmax = ctx->Scissor.X + ctx->Scissor.Width;

-      }

-      if (ctx->Scissor.Y + ctx->Scissor.Height < buffer->_Ymax) {

-	 buffer->_Ymax = ctx->Scissor.Y + ctx->Scissor.Height;

-      }

-      /* finally, check for empty region */

-      if (buffer->_Xmin > buffer->_Xmax) {

-         buffer->_Xmin = buffer->_Xmax;

-      }

-      if (buffer->_Ymin > buffer->_Ymax) {

-         buffer->_Ymin = buffer->_Ymax;

-      }

-   }

-

-   ASSERT(buffer->_Xmin <= buffer->_Xmax);

-   ASSERT(buffer->_Ymin <= buffer->_Ymax);

-}

-

-

-/**

- * The glGet queries of the framebuffer red/green/blue size, stencil size,

- * etc. are satisfied by the fields of ctx->DrawBuffer->Visual.  These can

- * change depending on the renderbuffer bindings.  This function updates

- * the given framebuffer's Visual from the current renderbuffer bindings.

- *

- * This may apply to user-created framebuffers or window system framebuffers.

- *

- * Also note: ctx->DrawBuffer->Visual.depthBits might not equal

- * ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer.DepthBits.

- * The former one is used to convert floating point depth values into

- * integer Z values.

- */

-void

-_mesa_update_framebuffer_visual(struct gl_context *ctx,

-				struct gl_framebuffer *fb)

-{

-   GLuint i;

-

-   memset(&fb->Visual, 0, sizeof(fb->Visual));

-   fb->Visual.rgbMode = GL_TRUE; /* assume this */

-

-#if 0 /* this _might_ be needed */

-   if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-      /* leave visual fields zero'd */

-      return;

-   }

-#endif

-

-   /* find first RGB renderbuffer */

-   for (i = 0; i < BUFFER_COUNT; i++) {

-      if (fb->Attachment[i].Renderbuffer) {

-         const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;

-         const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);

-         const gl_format fmt = rb->Format;

-

-         if (_mesa_is_legal_color_format(ctx, baseFormat)) {

-            fb->Visual.redBits = _mesa_get_format_bits(fmt, GL_RED_BITS);

-            fb->Visual.greenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);

-            fb->Visual.blueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);

-            fb->Visual.alphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);

-            fb->Visual.rgbBits = fb->Visual.redBits

-               + fb->Visual.greenBits + fb->Visual.blueBits;

-            fb->Visual.floatMode = GL_FALSE;

-            fb->Visual.samples = rb->NumSamples;

-            if (_mesa_get_format_color_encoding(fmt) == GL_SRGB)

-                fb->Visual.sRGBCapable = ctx->Const.sRGBCapable;

-            break;

-         }

-      }

-   }

-

-   if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {

-      const struct gl_renderbuffer *rb =

-         fb->Attachment[BUFFER_DEPTH].Renderbuffer;

-      const gl_format fmt = rb->Format;

-      fb->Visual.haveDepthBuffer = GL_TRUE;

-      fb->Visual.depthBits = _mesa_get_format_bits(fmt, GL_DEPTH_BITS);

-   }

-

-   if (fb->Attachment[BUFFER_STENCIL].Renderbuffer) {

-      const struct gl_renderbuffer *rb =

-         fb->Attachment[BUFFER_STENCIL].Renderbuffer;

-      const gl_format fmt = rb->Format;

-      fb->Visual.haveStencilBuffer = GL_TRUE;

-      fb->Visual.stencilBits = _mesa_get_format_bits(fmt, GL_STENCIL_BITS);

-   }

-

-   if (fb->Attachment[BUFFER_ACCUM].Renderbuffer) {

-      const struct gl_renderbuffer *rb =

-         fb->Attachment[BUFFER_ACCUM].Renderbuffer;

-      const gl_format fmt = rb->Format;

-      fb->Visual.haveAccumBuffer = GL_TRUE;

-      fb->Visual.accumRedBits = _mesa_get_format_bits(fmt, GL_RED_BITS);

-      fb->Visual.accumGreenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);

-      fb->Visual.accumBlueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);

-      fb->Visual.accumAlphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);

-   }

-

-   compute_depth_max(fb);

-}

-

-

-/**

- * Update the framebuffer's _DepthBuffer field using the renderbuffer

- * found at the given attachment index.

- *

- * If that attachment points to a combined GL_DEPTH_STENCIL renderbuffer,

- * create and install a depth wrapper/adaptor.

- *

- * \param fb  the framebuffer whose _DepthBuffer field to update

- * \param attIndex  indicates the renderbuffer to possibly wrap

- */

-void

-_mesa_update_depth_buffer(struct gl_context *ctx,

-                          struct gl_framebuffer *fb,

-                          GLuint attIndex)

-{

-   struct gl_renderbuffer *depthRb;

-

-   /* only one possiblity for now */

-   ASSERT(attIndex == BUFFER_DEPTH);

-

-   depthRb = fb->Attachment[attIndex].Renderbuffer;

-

-   if (depthRb && _mesa_is_format_packed_depth_stencil(depthRb->Format)) {

-      /* The attached depth buffer is a GL_DEPTH_STENCIL renderbuffer */

-      if (!fb->_DepthBuffer

-          || fb->_DepthBuffer->Wrapped != depthRb

-          || _mesa_get_format_base_format(fb->_DepthBuffer->Format) != GL_DEPTH_COMPONENT) {

-         /* need to update wrapper */

-         struct gl_renderbuffer *wrapper

-            = _mesa_new_z24_renderbuffer_wrapper(ctx, depthRb);

-         _mesa_reference_renderbuffer(&fb->_DepthBuffer, wrapper);

-         ASSERT(fb->_DepthBuffer->Wrapped == depthRb);

-      }

-   }

-   else {

-      /* depthRb may be null */

-      _mesa_reference_renderbuffer(&fb->_DepthBuffer, depthRb);

-   }

-}

-

-

-/**

- * Update the framebuffer's _StencilBuffer field using the renderbuffer

- * found at the given attachment index.

- *

- * If that attachment points to a combined GL_DEPTH_STENCIL renderbuffer,

- * create and install a stencil wrapper/adaptor.

- *

- * \param fb  the framebuffer whose _StencilBuffer field to update

- * \param attIndex  indicates the renderbuffer to possibly wrap

- */

-void

-_mesa_update_stencil_buffer(struct gl_context *ctx,

-                            struct gl_framebuffer *fb,

-                            GLuint attIndex)

-{

-   struct gl_renderbuffer *stencilRb;

-

-   ASSERT(attIndex == BUFFER_DEPTH ||

-          attIndex == BUFFER_STENCIL);

-

-   stencilRb = fb->Attachment[attIndex].Renderbuffer;

-

-   if (stencilRb && _mesa_is_format_packed_depth_stencil(stencilRb->Format)) {

-      /* The attached stencil buffer is a GL_DEPTH_STENCIL renderbuffer */

-      if (!fb->_StencilBuffer

-          || fb->_StencilBuffer->Wrapped != stencilRb

-          || _mesa_get_format_base_format(fb->_StencilBuffer->Format) != GL_STENCIL_INDEX) {

-         /* need to update wrapper */

-         struct gl_renderbuffer *wrapper

-            = _mesa_new_s8_renderbuffer_wrapper(ctx, stencilRb);

-         _mesa_reference_renderbuffer(&fb->_StencilBuffer, wrapper);

-         ASSERT(fb->_StencilBuffer->Wrapped == stencilRb);

-      }

-   }

-   else {

-      /* stencilRb may be null */

-      _mesa_reference_renderbuffer(&fb->_StencilBuffer, stencilRb);

-   }

-}

-

-

-/*

- * Example DrawBuffers scenarios:

- *

- * 1. glDrawBuffer(GL_FRONT_AND_BACK), fixed-func or shader writes to

- * "gl_FragColor" or program writes to the "result.color" register:

- *

- *   fragment color output   renderbuffer

- *   ---------------------   ---------------

- *   color[0]                Front, Back

- *

- *

- * 2. glDrawBuffers(3, [GL_FRONT, GL_AUX0, GL_AUX1]), shader writes to

- * gl_FragData[i] or program writes to result.color[i] registers:

- *

- *   fragment color output   renderbuffer

- *   ---------------------   ---------------

- *   color[0]                Front

- *   color[1]                Aux0

- *   color[3]                Aux1

- *

- *

- * 3. glDrawBuffers(3, [GL_FRONT, GL_AUX0, GL_AUX1]) and shader writes to

- * gl_FragColor, or fixed function:

- *

- *   fragment color output   renderbuffer

- *   ---------------------   ---------------

- *   color[0]                Front, Aux0, Aux1

- *

- *

- * In either case, the list of renderbuffers is stored in the

- * framebuffer->_ColorDrawBuffers[] array and

- * framebuffer->_NumColorDrawBuffers indicates the number of buffers.

- * The renderer (like swrast) has to look at the current fragment shader

- * to see if it writes to gl_FragColor vs. gl_FragData[i] to determine

- * how to map color outputs to renderbuffers.

- *

- * Note that these two calls are equivalent (for fixed function fragment

- * shading anyway):

- *   a)  glDrawBuffer(GL_FRONT_AND_BACK);  (assuming non-stereo framebuffer)

- *   b)  glDrawBuffers(2, [GL_FRONT_LEFT, GL_BACK_LEFT]);

- */

-

-

-

-

-/**

- * Update the (derived) list of color drawing renderbuffer pointers.

- * Later, when we're rendering we'll loop from 0 to _NumColorDrawBuffers

- * writing colors.

- */

-static void

-update_color_draw_buffers(struct gl_context *ctx, struct gl_framebuffer *fb)

-{

-   GLuint output;

-

-   /* set 0th buffer to NULL now in case _NumColorDrawBuffers is zero */

-   fb->_ColorDrawBuffers[0] = NULL;

-

-   for (output = 0; output < fb->_NumColorDrawBuffers; output++) {

-      GLint buf = fb->_ColorDrawBufferIndexes[output];

-      if (buf >= 0) {

-         fb->_ColorDrawBuffers[output] = fb->Attachment[buf].Renderbuffer;

-      }

-      else {

-         fb->_ColorDrawBuffers[output] = NULL;

-      }

-   }

-}

-

-

-/**

- * Update the (derived) color read renderbuffer pointer.

- * Unlike the DrawBuffer, we can only read from one (or zero) color buffers.

- */

-static void

-update_color_read_buffer(struct gl_context *ctx, struct gl_framebuffer *fb)

-{

-   (void) ctx;

-   if (fb->_ColorReadBufferIndex == -1 ||

-       fb->DeletePending ||

-       fb->Width == 0 ||

-       fb->Height == 0) {

-      fb->_ColorReadBuffer = NULL; /* legal! */

-   }

-   else {

-      ASSERT(fb->_ColorReadBufferIndex >= 0);

-      ASSERT(fb->_ColorReadBufferIndex < BUFFER_COUNT);

-      fb->_ColorReadBuffer

-         = fb->Attachment[fb->_ColorReadBufferIndex].Renderbuffer;

-   }

-}

-

-

-/**

- * Update a gl_framebuffer's derived state.

- *

- * Specifically, update these framebuffer fields:

- *    _ColorDrawBuffers

- *    _NumColorDrawBuffers

- *    _ColorReadBuffer

- *    _DepthBuffer

- *    _StencilBuffer

- *

- * If the framebuffer is user-created, make sure it's complete.

- *

- * The following functions (at least) can effect framebuffer state:

- * glReadBuffer, glDrawBuffer, glDrawBuffersARB, glFramebufferRenderbufferEXT,

- * glRenderbufferStorageEXT.

- */

-static void

-update_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)

-{

-   if (fb->Name == 0) {

-      /* This is a window-system framebuffer */

-      /* Need to update the FB's GL_DRAW_BUFFER state to match the

-       * context state (GL_READ_BUFFER too).

-       */

-      if (fb->ColorDrawBuffer[0] != ctx->Color.DrawBuffer[0]) {

-         _mesa_drawbuffers(ctx, ctx->Const.MaxDrawBuffers,

-                           ctx->Color.DrawBuffer, NULL);

-      }

-   }

-   else {

-      /* This is a user-created framebuffer.

-       * Completeness only matters for user-created framebuffers.

-       */

-      if (fb->_Status != GL_FRAMEBUFFER_COMPLETE) {

-         _mesa_test_framebuffer_completeness(ctx, fb);

-      }

-   }

-

-   /* Strictly speaking, we don't need to update the draw-state

-    * if this FB is bound as ctx->ReadBuffer (and conversely, the

-    * read-state if this FB is bound as ctx->DrawBuffer), but no

-    * harm.

-    */

-   update_color_draw_buffers(ctx, fb);

-   update_color_read_buffer(ctx, fb);

-   _mesa_update_depth_buffer(ctx, fb, BUFFER_DEPTH);

-   _mesa_update_stencil_buffer(ctx, fb, BUFFER_STENCIL);

-

-   compute_depth_max(fb);

-}

-

-

-/**

- * Update state related to the current draw/read framebuffers.

- */

-void

-_mesa_update_framebuffer(struct gl_context *ctx)

-{

-   struct gl_framebuffer *drawFb;

-   struct gl_framebuffer *readFb;

-

-   assert(ctx);

-   drawFb = ctx->DrawBuffer;

-   readFb = ctx->ReadBuffer;

-

-   update_framebuffer(ctx, drawFb);

-   if (readFb != drawFb)

-      update_framebuffer(ctx, readFb);

-}

-

-

-/**

- * Check if the renderbuffer for a read operation (glReadPixels, glCopyPixels,

- * glCopyTex[Sub]Image, etc) exists.

- * \param format  a basic image format such as GL_RGB, GL_RGBA, GL_ALPHA,

- *                GL_DEPTH_COMPONENT, etc. or GL_COLOR, GL_DEPTH, GL_STENCIL.

- * \return GL_TRUE if buffer exists, GL_FALSE otherwise

- */

-GLboolean

-_mesa_source_buffer_exists(struct gl_context *ctx, GLenum format)

-{

-   const struct gl_renderbuffer_attachment *att = ctx->ReadBuffer->Attachment;

-

-   /* If we don't know the framebuffer status, update it now */

-   if (ctx->ReadBuffer->_Status == 0) {

-      _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);

-   }

-

-   if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-      return GL_FALSE;

-   }

-

-   switch (format) {

-   case GL_COLOR:

-   case GL_RED:

-   case GL_GREEN:

-   case GL_BLUE:

-   case GL_ALPHA:

-   case GL_LUMINANCE:

-   case GL_LUMINANCE_ALPHA:

-   case GL_INTENSITY:

-   case GL_RG:

-   case GL_RGB:

-   case GL_BGR:

-   case GL_RGBA:

-   case GL_BGRA:

-   case GL_ABGR_EXT:

-   case GL_COLOR_INDEX:

-   case GL_RED_INTEGER_EXT:

-   case GL_GREEN_INTEGER_EXT:

-   case GL_BLUE_INTEGER_EXT:

-   case GL_ALPHA_INTEGER_EXT:

-   case GL_RGB_INTEGER_EXT:

-   case GL_RGBA_INTEGER_EXT:

-   case GL_BGR_INTEGER_EXT:

-   case GL_BGRA_INTEGER_EXT:

-   case GL_LUMINANCE_INTEGER_EXT:

-   case GL_LUMINANCE_ALPHA_INTEGER_EXT:

-      if (ctx->ReadBuffer->_ColorReadBuffer == NULL) {

-         return GL_FALSE;

-      }

-      ASSERT(_mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_RED_BITS) > 0 ||

-             _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_ALPHA_BITS) > 0 ||

-             _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_TEXTURE_LUMINANCE_SIZE) > 0 ||

-             _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_TEXTURE_INTENSITY_SIZE) > 0 ||

-             _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_INDEX_BITS) > 0);

-      break;

-   case GL_DEPTH:

-   case GL_DEPTH_COMPONENT:

-      if (!att[BUFFER_DEPTH].Renderbuffer) {

-         return GL_FALSE;

-      }

-      /*ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);*/

-      break;

-   case GL_STENCIL:

-   case GL_STENCIL_INDEX:

-      if (!att[BUFFER_STENCIL].Renderbuffer) {

-         return GL_FALSE;

-      }

-      /*ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);*/

-      break;

-   case GL_DEPTH_STENCIL_EXT:

-      if (!att[BUFFER_DEPTH].Renderbuffer ||

-          !att[BUFFER_STENCIL].Renderbuffer) {

-         return GL_FALSE;

-      }

-      /*

-      ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);

-      ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);

-      */

-      break;

-   default:

-      _mesa_problem(ctx,

-                    "Unexpected format 0x%x in _mesa_source_buffer_exists",

-                    format);

-      return GL_FALSE;

-   }

-

-   /* OK */

-   return GL_TRUE;

-}

-

-

-/**

- * As above, but for drawing operations.

- * XXX could do some code merging w/ above function.

- */

-GLboolean

-_mesa_dest_buffer_exists(struct gl_context *ctx, GLenum format)

-{

-   const struct gl_renderbuffer_attachment *att = ctx->DrawBuffer->Attachment;

-

-   /* If we don't know the framebuffer status, update it now */

-   if (ctx->DrawBuffer->_Status == 0) {

-      _mesa_test_framebuffer_completeness(ctx, ctx->DrawBuffer);

-   }

-

-   if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {

-      return GL_FALSE;

-   }

-

-   switch (format) {

-   case GL_COLOR:

-   case GL_RED:

-   case GL_GREEN:

-   case GL_BLUE:

-   case GL_ALPHA:

-   case GL_LUMINANCE:

-   case GL_LUMINANCE_ALPHA:

-   case GL_INTENSITY:

-   case GL_RGB:

-   case GL_BGR:

-   case GL_RGBA:

-   case GL_BGRA:

-   case GL_ABGR_EXT:

-   case GL_COLOR_INDEX:

-   case GL_RED_INTEGER_EXT:

-   case GL_GREEN_INTEGER_EXT:

-   case GL_BLUE_INTEGER_EXT:

-   case GL_ALPHA_INTEGER_EXT:

-   case GL_RGB_INTEGER_EXT:

-   case GL_RGBA_INTEGER_EXT:

-   case GL_BGR_INTEGER_EXT:

-   case GL_BGRA_INTEGER_EXT:

-   case GL_LUMINANCE_INTEGER_EXT:

-   case GL_LUMINANCE_ALPHA_INTEGER_EXT:

-      /* Nothing special since GL_DRAW_BUFFER could be GL_NONE. */

-      /* Could assert that colorbuffer has RedBits > 0 */

-      break;

-   case GL_DEPTH:

-   case GL_DEPTH_COMPONENT:

-      if (!att[BUFFER_DEPTH].Renderbuffer) {

-         return GL_FALSE;

-      }

-      /*ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);*/

-      break;

-   case GL_STENCIL:

-   case GL_STENCIL_INDEX:

-      if (!att[BUFFER_STENCIL].Renderbuffer) {

-         return GL_FALSE;

-      }

-      /*ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);*/

-      break;

-   case GL_DEPTH_STENCIL_EXT:

-      if (!att[BUFFER_DEPTH].Renderbuffer ||

-          !att[BUFFER_STENCIL].Renderbuffer) {

-         return GL_FALSE;

-      }

-      /*

-      ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);

-      ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);

-      */

-      break;

-   default:

-      _mesa_problem(ctx,

-                    "Unexpected format 0x%x in _mesa_dest_buffer_exists",

-                    format);

-      return GL_FALSE;

-   }

-

-   /* OK */

-   return GL_TRUE;

-}

-

-

-/**

- * Used to answer the GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES query.

- */

-GLenum

-_mesa_get_color_read_format(struct gl_context *ctx)

-{

-   switch (ctx->ReadBuffer->_ColorReadBuffer->Format) {

-   case MESA_FORMAT_ARGB8888:

-      return GL_BGRA;

-   case MESA_FORMAT_RGB565:

-      return GL_BGR;

-   default:

-      return GL_RGBA;

-   }

-}

-

-

-/**

- * Used to answer the GL_IMPLEMENTATION_COLOR_READ_TYPE_OES query.

- */

-GLenum

-_mesa_get_color_read_type(struct gl_context *ctx)

-{

-   switch (ctx->ReadBuffer->_ColorReadBuffer->Format) {

-   case MESA_FORMAT_ARGB8888:

-      return GL_UNSIGNED_BYTE;

-   case MESA_FORMAT_RGB565:

-      return GL_UNSIGNED_SHORT_5_6_5_REV;

-   default:

-      return GL_UNSIGNED_BYTE;

-   }

-}

-

-

-/**

- * Print framebuffer info to stderr, for debugging.

- */

-void

-_mesa_print_framebuffer(const struct gl_framebuffer *fb)

-{

-   GLuint i;

-

-   fprintf(stderr, "Mesa Framebuffer %u at %p\n", fb->Name, (void *) fb);

-   fprintf(stderr, "  Size: %u x %u  Status: %s\n", fb->Width, fb->Height,

-           _mesa_lookup_enum_by_nr(fb->_Status));

-   fprintf(stderr, "  Attachments:\n");

-

-   for (i = 0; i < BUFFER_COUNT; i++) {

-      const struct gl_renderbuffer_attachment *att = &fb->Attachment[i];

-      if (att->Type == GL_TEXTURE) {

-         const struct gl_texture_image *texImage =

-            _mesa_get_attachment_teximage_const(att);

-         fprintf(stderr,

-                 "  %2d: Texture %u, level %u, face %u, slice %u, complete %d\n",

-                 i, att->Texture->Name, att->TextureLevel, att->CubeMapFace,

-                 att->Zoffset, att->Complete);

-         fprintf(stderr, "       Size: %u x %u x %u  Format %s\n",

-                 texImage->Width, texImage->Height, texImage->Depth,

-                 _mesa_get_format_name(texImage->TexFormat));

-      }

-      else if (att->Type == GL_RENDERBUFFER) {

-         fprintf(stderr, "  %2d: Renderbuffer %u, complete %d\n",

-                 i, att->Renderbuffer->Name, att->Complete);

-         fprintf(stderr, "       Size: %u x %u  Format %s\n",

-                 att->Renderbuffer->Width, att->Renderbuffer->Height,

-                 _mesa_get_format_name(att->Renderbuffer->Format));

-      }

-      else {

-         fprintf(stderr, "  %2d: none\n", i);

-      }

-   }

-}

+/*
+ * Mesa 3-D graphics library
+ * Version:  7.2
+ *
+ * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/**
+ * Functions for allocating/managing framebuffers and renderbuffers.
+ * Also, routines for reading/writing renderbuffer data as ubytes,
+ * ushorts, uints, etc.
+ */
+
+
+#include "glheader.h"
+#include "imports.h"
+#include "buffers.h"
+#include "context.h"
+#include "depthstencil.h"
+#include "enums.h"
+#include "formats.h"
+#include "macros.h"
+#include "mtypes.h"
+#include "fbobject.h"
+#include "framebuffer.h"
+#include "renderbuffer.h"
+#include "texobj.h"
+
+
+
+/**
+ * Compute/set the _DepthMax field for the given framebuffer.
+ * This value depends on the Z buffer resolution.
+ */
+static void
+compute_depth_max(struct gl_framebuffer *fb)
+{
+   if (fb->Visual.depthBits == 0) {
+      /* Special case.  Even if we don't have a depth buffer we need
+       * good values for DepthMax for Z vertex transformation purposes
+       * and for per-fragment fog computation.
+       */
+      fb->_DepthMax = (1 << 16) - 1;
+   }
+   else if (fb->Visual.depthBits < 32) {
+      fb->_DepthMax = (1 << fb->Visual.depthBits) - 1;
+   }
+   else {
+      /* Special case since shift values greater than or equal to the
+       * number of bits in the left hand expression's type are undefined.
+       */
+      fb->_DepthMax = 0xffffffff;
+   }
+   fb->_DepthMaxF = (GLfloat) fb->_DepthMax;
+
+   /* Minimum resolvable depth value, for polygon offset */
+   fb->_MRD = (GLfloat)1.0 / fb->_DepthMaxF;
+}
+
+/**
+ * Create and initialize a gl_framebuffer object.
+ * This is intended for creating _window_system_ framebuffers, not generic
+ * framebuffer objects ala GL_EXT_framebuffer_object.
+ *
+ * \sa _mesa_new_framebuffer
+ */
+struct gl_framebuffer *
+_mesa_create_framebuffer(const struct gl_config *visual)
+{
+   struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
+   assert(visual);
+   if (fb) {
+      _mesa_initialize_window_framebuffer(fb, visual);
+   }
+   return fb;
+}
+
+
+/**
+ * Allocate a new gl_framebuffer object.
+ * This is the default function for ctx->Driver.NewFramebuffer().
+ * This is for allocating user-created framebuffers, not window-system
+ * framebuffers!
+ * \sa _mesa_create_framebuffer
+ */
+struct gl_framebuffer *
+_mesa_new_framebuffer(struct gl_context *ctx, GLuint name)
+{
+   struct gl_framebuffer *fb;
+   (void) ctx;
+   assert(name != 0);
+   fb = CALLOC_STRUCT(gl_framebuffer);
+   if (fb) {
+      _mesa_initialize_user_framebuffer(fb, name);
+   }
+   return fb;
+}
+
+
+/**
+ * Initialize a gl_framebuffer object.  Typically used to initialize
+ * window system-created framebuffers, not user-created framebuffers.
+ * \sa _mesa_initialize_user_framebuffer
+ */
+void
+_mesa_initialize_window_framebuffer(struct gl_framebuffer *fb,
+				     const struct gl_config *visual)
+{
+   assert(fb);
+   assert(visual);
+
+   memset(fb, 0, sizeof(struct gl_framebuffer));
+
+   _glthread_INIT_MUTEX(fb->Mutex);
+
+   fb->RefCount = 1;
+
+   /* save the visual */
+   fb->Visual = *visual;
+
+   /* Init read/draw renderbuffer state */
+   if (visual->doubleBufferMode) {
+      fb->_NumColorDrawBuffers = 1;
+      fb->ColorDrawBuffer[0] = GL_BACK;
+      fb->_ColorDrawBufferIndexes[0] = BUFFER_BACK_LEFT;
+      fb->ColorReadBuffer = GL_BACK;
+      fb->_ColorReadBufferIndex = BUFFER_BACK_LEFT;
+   }
+   else {
+      fb->_NumColorDrawBuffers = 1;
+      fb->ColorDrawBuffer[0] = GL_FRONT;
+      fb->_ColorDrawBufferIndexes[0] = BUFFER_FRONT_LEFT;
+      fb->ColorReadBuffer = GL_FRONT;
+      fb->_ColorReadBufferIndex = BUFFER_FRONT_LEFT;
+   }
+
+   fb->Delete = _mesa_destroy_framebuffer;
+   fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
+
+   compute_depth_max(fb);
+}
+
+
+/**
+ * Initialize a user-created gl_framebuffer object.
+ * \sa _mesa_initialize_window_framebuffer
+ */
+void
+_mesa_initialize_user_framebuffer(struct gl_framebuffer *fb, GLuint name)
+{
+   assert(fb);
+   assert(name);
+
+   memset(fb, 0, sizeof(struct gl_framebuffer));
+
+   fb->Name = name;
+   fb->RefCount = 1;
+   fb->_NumColorDrawBuffers = 1;
+   fb->ColorDrawBuffer[0] = GL_COLOR_ATTACHMENT0_EXT;
+   fb->_ColorDrawBufferIndexes[0] = BUFFER_COLOR0;
+   fb->ColorReadBuffer = GL_COLOR_ATTACHMENT0_EXT;
+   fb->_ColorReadBufferIndex = BUFFER_COLOR0;
+   fb->Delete = _mesa_destroy_framebuffer;
+   _glthread_INIT_MUTEX(fb->Mutex);
+}
+
+
+/**
+ * Deallocate buffer and everything attached to it.
+ * Typically called via the gl_framebuffer->Delete() method.
+ */
+void
+_mesa_destroy_framebuffer(struct gl_framebuffer *fb)
+{
+   if (fb) {
+      _mesa_free_framebuffer_data(fb);
+      free(fb);
+   }
+}
+
+
+/**
+ * Free all the data hanging off the given gl_framebuffer, but don't free
+ * the gl_framebuffer object itself.
+ */
+void
+_mesa_free_framebuffer_data(struct gl_framebuffer *fb)
+{
+   GLuint i;
+
+   assert(fb);
+   assert(fb->RefCount == 0);
+
+   _glthread_DESTROY_MUTEX(fb->Mutex);
+
+   for (i = 0; i < BUFFER_COUNT; i++) {
+      struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
+      if (att->Renderbuffer) {
+         _mesa_reference_renderbuffer(&att->Renderbuffer, NULL);
+      }
+      if (att->Texture) {
+         _mesa_reference_texobj(&att->Texture, NULL);
+      }
+      ASSERT(!att->Renderbuffer);
+      ASSERT(!att->Texture);
+      att->Type = GL_NONE;
+   }
+
+   /* unbind _Depth/_StencilBuffer to decr ref counts */
+   _mesa_reference_renderbuffer(&fb->_DepthBuffer, NULL);
+   _mesa_reference_renderbuffer(&fb->_StencilBuffer, NULL);
+}
+
+
+/**
+ * Set *ptr to point to fb, with refcounting and locking.
+ */
+void
+_mesa_reference_framebuffer(struct gl_framebuffer **ptr,
+                            struct gl_framebuffer *fb)
+{
+   assert(ptr);
+   if (*ptr == fb) {
+      /* no change */
+      return;
+   }
+
+   if (*ptr) {
+      /* unreference old renderbuffer */
+      GLboolean deleteFlag = GL_FALSE;
+      struct gl_framebuffer *oldFb = *ptr;
+
+      _glthread_LOCK_MUTEX(oldFb->Mutex);
+      ASSERT(oldFb->RefCount > 0);
+      oldFb->RefCount--;
+      deleteFlag = (oldFb->RefCount == 0);
+      _glthread_UNLOCK_MUTEX(oldFb->Mutex);
+      
+      if (deleteFlag)
+         oldFb->Delete(oldFb);
+
+      *ptr = NULL;
+   }
+   assert(!*ptr);
+
+   if (fb) {
+      _glthread_LOCK_MUTEX(fb->Mutex);
+      fb->RefCount++;
+      _glthread_UNLOCK_MUTEX(fb->Mutex);
+      *ptr = fb;
+   }
+}
+
+
+/**
+ * Resize the given framebuffer's renderbuffers to the new width and height.
+ * This should only be used for window-system framebuffers, not
+ * user-created renderbuffers (i.e. made with GL_EXT_framebuffer_object).
+ * This will typically be called via ctx->Driver.ResizeBuffers() or directly
+ * from a device driver.
+ *
+ * \note it's possible for ctx to be null since a window can be resized
+ * without a currently bound rendering context.
+ */
+void
+_mesa_resize_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb,
+                         GLuint width, GLuint height)
+{
+   GLuint i;
+
+   /* XXX I think we could check if the size is not changing
+    * and return early.
+    */
+
+   /* For window system framebuffers, Name is zero */
+   assert(fb->Name == 0);
+
+   for (i = 0; i < BUFFER_COUNT; i++) {
+      struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
+      if (att->Type == GL_RENDERBUFFER_EXT && att->Renderbuffer) {
+         struct gl_renderbuffer *rb = att->Renderbuffer;
+         /* only resize if size is changing */
+         if (rb->Width != width || rb->Height != height) {
+            if (rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {
+               ASSERT(rb->Width == width);
+               ASSERT(rb->Height == height);
+            }
+            else {
+               _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");
+               /* no return */
+            }
+         }
+      }
+   }
+
+   if (fb->_DepthBuffer) {
+      struct gl_renderbuffer *rb = fb->_DepthBuffer;
+      if (rb->Width != width || rb->Height != height) {
+         if (!rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {
+            _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");
+         }
+      }
+   }
+
+   if (fb->_StencilBuffer) {
+      struct gl_renderbuffer *rb = fb->_StencilBuffer;
+      if (rb->Width != width || rb->Height != height) {
+         if (!rb->AllocStorage(ctx, rb, rb->InternalFormat, width, height)) {
+            _mesa_error(ctx, GL_OUT_OF_MEMORY, "Resizing framebuffer");
+         }
+      }
+   }
+
+   fb->Width = width;
+   fb->Height = height;
+
+   if (ctx) {
+      /* update scissor / window bounds */
+      _mesa_update_draw_buffer_bounds(ctx);
+      /* Signal new buffer state so that swrast will update its clipping
+       * info (the CLIP_BIT flag).
+       */
+      ctx->NewState |= _NEW_BUFFERS;
+   }
+}
+
+
+
+/**
+ * XXX THIS IS OBSOLETE - drivers should take care of detecting window
+ * size changes and act accordingly, likely calling _mesa_resize_framebuffer().
+ *
+ * GL_MESA_resize_buffers extension.
+ *
+ * When this function is called, we'll ask the window system how large
+ * the current window is.  If it's a new size, we'll call the driver's
+ * ResizeBuffers function.  The driver will then resize its color buffers
+ * as needed, and maybe call the swrast's routine for reallocating
+ * swrast-managed depth/stencil/accum/etc buffers.
+ * \note This function should only be called through the GL API, not
+ * from device drivers (as was done in the past).
+ */
+void
+_mesa_resizebuffers( struct gl_context *ctx )
+{
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH( ctx );
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glResizeBuffersMESA\n");
+
+   if (!ctx->Driver.GetBufferSize) {
+      return;
+   }
+
+   if (ctx->WinSysDrawBuffer) {
+      GLuint newWidth, newHeight;
+      struct gl_framebuffer *buffer = ctx->WinSysDrawBuffer;
+
+      assert(buffer->Name == 0);
+
+      /* ask device driver for size of output buffer */
+      ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight );
+
+      /* see if size of device driver's color buffer (window) has changed */
+      if (buffer->Width != newWidth || buffer->Height != newHeight) {
+         if (ctx->Driver.ResizeBuffers)
+            ctx->Driver.ResizeBuffers(ctx, buffer, newWidth, newHeight );
+      }
+   }
+
+   if (ctx->WinSysReadBuffer
+       && ctx->WinSysReadBuffer != ctx->WinSysDrawBuffer) {
+      GLuint newWidth, newHeight;
+      struct gl_framebuffer *buffer = ctx->WinSysReadBuffer;
+
+      assert(buffer->Name == 0);
+
+      /* ask device driver for size of read buffer */
+      ctx->Driver.GetBufferSize( buffer, &newWidth, &newHeight );
+
+      /* see if size of device driver's color buffer (window) has changed */
+      if (buffer->Width != newWidth || buffer->Height != newHeight) {
+         if (ctx->Driver.ResizeBuffers)
+            ctx->Driver.ResizeBuffers(ctx, buffer, newWidth, newHeight );
+      }
+   }
+
+   ctx->NewState |= _NEW_BUFFERS;  /* to update scissor / window bounds */
+}
+
+
+/*
+ * XXX THIS IS OBSOLETE
+ */
+void GLAPIENTRY
+_mesa_ResizeBuffersMESA( void )
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (ctx->Extensions.MESA_resize_buffers)
+      _mesa_resizebuffers( ctx );
+}
+
+
+
+/**
+ * Examine all the framebuffer's renderbuffers to update the Width/Height
+ * fields of the framebuffer.  If we have renderbuffers with different
+ * sizes, set the framebuffer's width and height to the min size.
+ * Note: this is only intended for user-created framebuffers, not
+ * window-system framebuffes.
+ */
+static void
+update_framebuffer_size(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+   GLuint minWidth = ~0, minHeight = ~0;
+   GLuint i;
+
+   /* user-created framebuffers only */
+   assert(fb->Name);
+
+   for (i = 0; i < BUFFER_COUNT; i++) {
+      struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
+      const struct gl_renderbuffer *rb = att->Renderbuffer;
+      if (rb) {
+         minWidth = MIN2(minWidth, rb->Width);
+         minHeight = MIN2(minHeight, rb->Height);
+      }
+   }
+
+   if (minWidth != ~0) {
+      fb->Width = minWidth;
+      fb->Height = minHeight;
+   }
+   else {
+      fb->Width = 0;
+      fb->Height = 0;
+   }
+}
+
+
+/**
+ * Update the context's current drawing buffer's Xmin, Xmax, Ymin, Ymax fields.
+ * These values are computed from the buffer's width and height and
+ * the scissor box, if it's enabled.
+ * \param ctx  the GL context.
+ */
+void
+_mesa_update_draw_buffer_bounds(struct gl_context *ctx)
+{
+   struct gl_framebuffer *buffer = ctx->DrawBuffer;
+
+   if (!buffer)
+      return;
+
+   if (buffer->Name) {
+      /* user-created framebuffer size depends on the renderbuffers */
+      update_framebuffer_size(ctx, buffer);
+   }
+
+   buffer->_Xmin = 0;
+   buffer->_Ymin = 0;
+   buffer->_Xmax = buffer->Width;
+   buffer->_Ymax = buffer->Height;
+
+   if (ctx->Scissor.Enabled) {
+      if (ctx->Scissor.X > buffer->_Xmin) {
+	 buffer->_Xmin = ctx->Scissor.X;
+      }
+      if (ctx->Scissor.Y > buffer->_Ymin) {
+	 buffer->_Ymin = ctx->Scissor.Y;
+      }
+      if (ctx->Scissor.X + ctx->Scissor.Width < buffer->_Xmax) {
+	 buffer->_Xmax = ctx->Scissor.X + ctx->Scissor.Width;
+      }
+      if (ctx->Scissor.Y + ctx->Scissor.Height < buffer->_Ymax) {
+	 buffer->_Ymax = ctx->Scissor.Y + ctx->Scissor.Height;
+      }
+      /* finally, check for empty region */
+      if (buffer->_Xmin > buffer->_Xmax) {
+         buffer->_Xmin = buffer->_Xmax;
+      }
+      if (buffer->_Ymin > buffer->_Ymax) {
+         buffer->_Ymin = buffer->_Ymax;
+      }
+   }
+
+   ASSERT(buffer->_Xmin <= buffer->_Xmax);
+   ASSERT(buffer->_Ymin <= buffer->_Ymax);
+}
+
+
+/**
+ * The glGet queries of the framebuffer red/green/blue size, stencil size,
+ * etc. are satisfied by the fields of ctx->DrawBuffer->Visual.  These can
+ * change depending on the renderbuffer bindings.  This function updates
+ * the given framebuffer's Visual from the current renderbuffer bindings.
+ *
+ * This may apply to user-created framebuffers or window system framebuffers.
+ *
+ * Also note: ctx->DrawBuffer->Visual.depthBits might not equal
+ * ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer.DepthBits.
+ * The former one is used to convert floating point depth values into
+ * integer Z values.
+ */
+void
+_mesa_update_framebuffer_visual(struct gl_context *ctx,
+				struct gl_framebuffer *fb)
+{
+   GLuint i;
+
+   memset(&fb->Visual, 0, sizeof(fb->Visual));
+   fb->Visual.rgbMode = GL_TRUE; /* assume this */
+
+#if 0 /* this _might_ be needed */
+   if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+      /* leave visual fields zero'd */
+      return;
+   }
+#endif
+
+   /* find first RGB renderbuffer */
+   for (i = 0; i < BUFFER_COUNT; i++) {
+      if (fb->Attachment[i].Renderbuffer) {
+         const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
+         const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
+         const gl_format fmt = rb->Format;
+
+         if (_mesa_is_legal_color_format(ctx, baseFormat)) {
+            fb->Visual.redBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
+            fb->Visual.greenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
+            fb->Visual.blueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
+            fb->Visual.alphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
+            fb->Visual.rgbBits = fb->Visual.redBits
+               + fb->Visual.greenBits + fb->Visual.blueBits;
+            fb->Visual.samples = rb->NumSamples;
+            if (_mesa_get_format_color_encoding(fmt) == GL_SRGB)
+                fb->Visual.sRGBCapable = ctx->Const.sRGBCapable;
+            break;
+         }
+      }
+   }
+
+   fb->Visual.floatMode = GL_FALSE;
+   for (i = 0; i < BUFFER_COUNT; i++) {
+      if (fb->Attachment[i].Renderbuffer) {
+         const struct gl_renderbuffer *rb = fb->Attachment[i].Renderbuffer;
+         const gl_format fmt = rb->Format;
+
+         if (_mesa_get_format_datatype(fmt) == GL_FLOAT) {
+            fb->Visual.floatMode = GL_TRUE;
+            break;
+         }
+      }
+   }
+
+   if (fb->Attachment[BUFFER_DEPTH].Renderbuffer) {
+      const struct gl_renderbuffer *rb =
+         fb->Attachment[BUFFER_DEPTH].Renderbuffer;
+      const gl_format fmt = rb->Format;
+      fb->Visual.haveDepthBuffer = GL_TRUE;
+      fb->Visual.depthBits = _mesa_get_format_bits(fmt, GL_DEPTH_BITS);
+   }
+
+   if (fb->Attachment[BUFFER_STENCIL].Renderbuffer) {
+      const struct gl_renderbuffer *rb =
+         fb->Attachment[BUFFER_STENCIL].Renderbuffer;
+      const gl_format fmt = rb->Format;
+      fb->Visual.haveStencilBuffer = GL_TRUE;
+      fb->Visual.stencilBits = _mesa_get_format_bits(fmt, GL_STENCIL_BITS);
+   }
+
+   if (fb->Attachment[BUFFER_ACCUM].Renderbuffer) {
+      const struct gl_renderbuffer *rb =
+         fb->Attachment[BUFFER_ACCUM].Renderbuffer;
+      const gl_format fmt = rb->Format;
+      fb->Visual.haveAccumBuffer = GL_TRUE;
+      fb->Visual.accumRedBits = _mesa_get_format_bits(fmt, GL_RED_BITS);
+      fb->Visual.accumGreenBits = _mesa_get_format_bits(fmt, GL_GREEN_BITS);
+      fb->Visual.accumBlueBits = _mesa_get_format_bits(fmt, GL_BLUE_BITS);
+      fb->Visual.accumAlphaBits = _mesa_get_format_bits(fmt, GL_ALPHA_BITS);
+   }
+
+   compute_depth_max(fb);
+}
+
+
+/**
+ * Update the framebuffer's _DepthBuffer field using the renderbuffer
+ * found at the given attachment index.
+ *
+ * If that attachment points to a combined GL_DEPTH_STENCIL renderbuffer,
+ * create and install a depth wrapper/adaptor.
+ *
+ * \param fb  the framebuffer whose _DepthBuffer field to update
+ * \param attIndex  indicates the renderbuffer to possibly wrap
+ */
+void
+_mesa_update_depth_buffer(struct gl_context *ctx,
+                          struct gl_framebuffer *fb,
+                          GLuint attIndex)
+{
+   struct gl_renderbuffer *depthRb;
+
+   /* only one possiblity for now */
+   ASSERT(attIndex == BUFFER_DEPTH);
+
+   depthRb = fb->Attachment[attIndex].Renderbuffer;
+
+   if (depthRb && _mesa_is_format_packed_depth_stencil(depthRb->Format)) {
+      /* The attached depth buffer is a GL_DEPTH_STENCIL renderbuffer */
+      if (!fb->_DepthBuffer
+          || fb->_DepthBuffer->Wrapped != depthRb
+          || _mesa_get_format_base_format(fb->_DepthBuffer->Format) != GL_DEPTH_COMPONENT) {
+         /* need to update wrapper */
+         struct gl_renderbuffer *wrapper
+            = _mesa_new_z24_renderbuffer_wrapper(ctx, depthRb);
+         _mesa_reference_renderbuffer(&fb->_DepthBuffer, wrapper);
+         ASSERT(fb->_DepthBuffer->Wrapped == depthRb);
+      }
+   }
+   else {
+      /* depthRb may be null */
+      _mesa_reference_renderbuffer(&fb->_DepthBuffer, depthRb);
+   }
+}
+
+
+/**
+ * Update the framebuffer's _StencilBuffer field using the renderbuffer
+ * found at the given attachment index.
+ *
+ * If that attachment points to a combined GL_DEPTH_STENCIL renderbuffer,
+ * create and install a stencil wrapper/adaptor.
+ *
+ * \param fb  the framebuffer whose _StencilBuffer field to update
+ * \param attIndex  indicates the renderbuffer to possibly wrap
+ */
+void
+_mesa_update_stencil_buffer(struct gl_context *ctx,
+                            struct gl_framebuffer *fb,
+                            GLuint attIndex)
+{
+   struct gl_renderbuffer *stencilRb;
+
+   ASSERT(attIndex == BUFFER_DEPTH ||
+          attIndex == BUFFER_STENCIL);
+
+   stencilRb = fb->Attachment[attIndex].Renderbuffer;
+
+   if (stencilRb && _mesa_is_format_packed_depth_stencil(stencilRb->Format)) {
+      /* The attached stencil buffer is a GL_DEPTH_STENCIL renderbuffer */
+      if (!fb->_StencilBuffer
+          || fb->_StencilBuffer->Wrapped != stencilRb
+          || _mesa_get_format_base_format(fb->_StencilBuffer->Format) != GL_STENCIL_INDEX) {
+         /* need to update wrapper */
+         struct gl_renderbuffer *wrapper
+            = _mesa_new_s8_renderbuffer_wrapper(ctx, stencilRb);
+         _mesa_reference_renderbuffer(&fb->_StencilBuffer, wrapper);
+         ASSERT(fb->_StencilBuffer->Wrapped == stencilRb);
+      }
+   }
+   else {
+      /* stencilRb may be null */
+      _mesa_reference_renderbuffer(&fb->_StencilBuffer, stencilRb);
+   }
+}
+
+
+/*
+ * Example DrawBuffers scenarios:
+ *
+ * 1. glDrawBuffer(GL_FRONT_AND_BACK), fixed-func or shader writes to
+ * "gl_FragColor" or program writes to the "result.color" register:
+ *
+ *   fragment color output   renderbuffer
+ *   ---------------------   ---------------
+ *   color[0]                Front, Back
+ *
+ *
+ * 2. glDrawBuffers(3, [GL_FRONT, GL_AUX0, GL_AUX1]), shader writes to
+ * gl_FragData[i] or program writes to result.color[i] registers:
+ *
+ *   fragment color output   renderbuffer
+ *   ---------------------   ---------------
+ *   color[0]                Front
+ *   color[1]                Aux0
+ *   color[3]                Aux1
+ *
+ *
+ * 3. glDrawBuffers(3, [GL_FRONT, GL_AUX0, GL_AUX1]) and shader writes to
+ * gl_FragColor, or fixed function:
+ *
+ *   fragment color output   renderbuffer
+ *   ---------------------   ---------------
+ *   color[0]                Front, Aux0, Aux1
+ *
+ *
+ * In either case, the list of renderbuffers is stored in the
+ * framebuffer->_ColorDrawBuffers[] array and
+ * framebuffer->_NumColorDrawBuffers indicates the number of buffers.
+ * The renderer (like swrast) has to look at the current fragment shader
+ * to see if it writes to gl_FragColor vs. gl_FragData[i] to determine
+ * how to map color outputs to renderbuffers.
+ *
+ * Note that these two calls are equivalent (for fixed function fragment
+ * shading anyway):
+ *   a)  glDrawBuffer(GL_FRONT_AND_BACK);  (assuming non-stereo framebuffer)
+ *   b)  glDrawBuffers(2, [GL_FRONT_LEFT, GL_BACK_LEFT]);
+ */
+
+
+
+
+/**
+ * Update the (derived) list of color drawing renderbuffer pointers.
+ * Later, when we're rendering we'll loop from 0 to _NumColorDrawBuffers
+ * writing colors.
+ */
+static void
+update_color_draw_buffers(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+   GLuint output;
+
+   /* set 0th buffer to NULL now in case _NumColorDrawBuffers is zero */
+   fb->_ColorDrawBuffers[0] = NULL;
+
+   for (output = 0; output < fb->_NumColorDrawBuffers; output++) {
+      GLint buf = fb->_ColorDrawBufferIndexes[output];
+      if (buf >= 0) {
+         fb->_ColorDrawBuffers[output] = fb->Attachment[buf].Renderbuffer;
+      }
+      else {
+         fb->_ColorDrawBuffers[output] = NULL;
+      }
+   }
+}
+
+
+/**
+ * Update the (derived) color read renderbuffer pointer.
+ * Unlike the DrawBuffer, we can only read from one (or zero) color buffers.
+ */
+static void
+update_color_read_buffer(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+   (void) ctx;
+   if (fb->_ColorReadBufferIndex == -1 ||
+       fb->DeletePending ||
+       fb->Width == 0 ||
+       fb->Height == 0) {
+      fb->_ColorReadBuffer = NULL; /* legal! */
+   }
+   else {
+      ASSERT(fb->_ColorReadBufferIndex >= 0);
+      ASSERT(fb->_ColorReadBufferIndex < BUFFER_COUNT);
+      fb->_ColorReadBuffer
+         = fb->Attachment[fb->_ColorReadBufferIndex].Renderbuffer;
+   }
+}
+
+
+/**
+ * Update a gl_framebuffer's derived state.
+ *
+ * Specifically, update these framebuffer fields:
+ *    _ColorDrawBuffers
+ *    _NumColorDrawBuffers
+ *    _ColorReadBuffer
+ *    _DepthBuffer
+ *    _StencilBuffer
+ *
+ * If the framebuffer is user-created, make sure it's complete.
+ *
+ * The following functions (at least) can effect framebuffer state:
+ * glReadBuffer, glDrawBuffer, glDrawBuffersARB, glFramebufferRenderbufferEXT,
+ * glRenderbufferStorageEXT.
+ */
+static void
+update_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+   if (fb->Name == 0) {
+      /* This is a window-system framebuffer */
+      /* Need to update the FB's GL_DRAW_BUFFER state to match the
+       * context state (GL_READ_BUFFER too).
+       */
+      if (fb->ColorDrawBuffer[0] != ctx->Color.DrawBuffer[0]) {
+         _mesa_drawbuffers(ctx, ctx->Const.MaxDrawBuffers,
+                           ctx->Color.DrawBuffer, NULL);
+      }
+   }
+   else {
+      /* This is a user-created framebuffer.
+       * Completeness only matters for user-created framebuffers.
+       */
+      if (fb->_Status != GL_FRAMEBUFFER_COMPLETE) {
+         _mesa_test_framebuffer_completeness(ctx, fb);
+      }
+   }
+
+   /* Strictly speaking, we don't need to update the draw-state
+    * if this FB is bound as ctx->ReadBuffer (and conversely, the
+    * read-state if this FB is bound as ctx->DrawBuffer), but no
+    * harm.
+    */
+   update_color_draw_buffers(ctx, fb);
+   update_color_read_buffer(ctx, fb);
+   _mesa_update_depth_buffer(ctx, fb, BUFFER_DEPTH);
+   _mesa_update_stencil_buffer(ctx, fb, BUFFER_STENCIL);
+
+   compute_depth_max(fb);
+}
+
+
+/**
+ * Update state related to the current draw/read framebuffers.
+ */
+void
+_mesa_update_framebuffer(struct gl_context *ctx)
+{
+   struct gl_framebuffer *drawFb;
+   struct gl_framebuffer *readFb;
+
+   assert(ctx);
+   drawFb = ctx->DrawBuffer;
+   readFb = ctx->ReadBuffer;
+
+   update_framebuffer(ctx, drawFb);
+   if (readFb != drawFb)
+      update_framebuffer(ctx, readFb);
+}
+
+
+/**
+ * Check if the renderbuffer for a read operation (glReadPixels, glCopyPixels,
+ * glCopyTex[Sub]Image, etc) exists.
+ * \param format  a basic image format such as GL_RGB, GL_RGBA, GL_ALPHA,
+ *                GL_DEPTH_COMPONENT, etc. or GL_COLOR, GL_DEPTH, GL_STENCIL.
+ * \return GL_TRUE if buffer exists, GL_FALSE otherwise
+ */
+GLboolean
+_mesa_source_buffer_exists(struct gl_context *ctx, GLenum format)
+{
+   const struct gl_renderbuffer_attachment *att = ctx->ReadBuffer->Attachment;
+
+   /* If we don't know the framebuffer status, update it now */
+   if (ctx->ReadBuffer->_Status == 0) {
+      _mesa_test_framebuffer_completeness(ctx, ctx->ReadBuffer);
+   }
+
+   if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+      return GL_FALSE;
+   }
+
+   switch (format) {
+   case GL_COLOR:
+   case GL_RED:
+   case GL_GREEN:
+   case GL_BLUE:
+   case GL_ALPHA:
+   case GL_LUMINANCE:
+   case GL_LUMINANCE_ALPHA:
+   case GL_INTENSITY:
+   case GL_RG:
+   case GL_RGB:
+   case GL_BGR:
+   case GL_RGBA:
+   case GL_BGRA:
+   case GL_ABGR_EXT:
+   case GL_COLOR_INDEX:
+   case GL_RED_INTEGER_EXT:
+   case GL_GREEN_INTEGER_EXT:
+   case GL_BLUE_INTEGER_EXT:
+   case GL_ALPHA_INTEGER_EXT:
+   case GL_RGB_INTEGER_EXT:
+   case GL_RGBA_INTEGER_EXT:
+   case GL_BGR_INTEGER_EXT:
+   case GL_BGRA_INTEGER_EXT:
+   case GL_LUMINANCE_INTEGER_EXT:
+   case GL_LUMINANCE_ALPHA_INTEGER_EXT:
+      if (ctx->ReadBuffer->_ColorReadBuffer == NULL) {
+         return GL_FALSE;
+      }
+      ASSERT(_mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_RED_BITS) > 0 ||
+             _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_ALPHA_BITS) > 0 ||
+             _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_TEXTURE_LUMINANCE_SIZE) > 0 ||
+             _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_TEXTURE_INTENSITY_SIZE) > 0 ||
+             _mesa_get_format_bits(ctx->ReadBuffer->_ColorReadBuffer->Format, GL_INDEX_BITS) > 0);
+      break;
+   case GL_DEPTH:
+   case GL_DEPTH_COMPONENT:
+      if (!att[BUFFER_DEPTH].Renderbuffer) {
+         return GL_FALSE;
+      }
+      /*ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);*/
+      break;
+   case GL_STENCIL:
+   case GL_STENCIL_INDEX:
+      if (!att[BUFFER_STENCIL].Renderbuffer) {
+         return GL_FALSE;
+      }
+      /*ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);*/
+      break;
+   case GL_DEPTH_STENCIL_EXT:
+      if (!att[BUFFER_DEPTH].Renderbuffer ||
+          !att[BUFFER_STENCIL].Renderbuffer) {
+         return GL_FALSE;
+      }
+      /*
+      ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);
+      ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);
+      */
+      break;
+   default:
+      _mesa_problem(ctx,
+                    "Unexpected format 0x%x in _mesa_source_buffer_exists",
+                    format);
+      return GL_FALSE;
+   }
+
+   /* OK */
+   return GL_TRUE;
+}
+
+
+/**
+ * As above, but for drawing operations.
+ * XXX could do some code merging w/ above function.
+ */
+GLboolean
+_mesa_dest_buffer_exists(struct gl_context *ctx, GLenum format)
+{
+   const struct gl_renderbuffer_attachment *att = ctx->DrawBuffer->Attachment;
+
+   /* If we don't know the framebuffer status, update it now */
+   if (ctx->DrawBuffer->_Status == 0) {
+      _mesa_test_framebuffer_completeness(ctx, ctx->DrawBuffer);
+   }
+
+   if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+      return GL_FALSE;
+   }
+
+   switch (format) {
+   case GL_COLOR:
+   case GL_RED:
+   case GL_GREEN:
+   case GL_BLUE:
+   case GL_ALPHA:
+   case GL_LUMINANCE:
+   case GL_LUMINANCE_ALPHA:
+   case GL_INTENSITY:
+   case GL_RGB:
+   case GL_BGR:
+   case GL_RGBA:
+   case GL_BGRA:
+   case GL_ABGR_EXT:
+   case GL_COLOR_INDEX:
+   case GL_RED_INTEGER_EXT:
+   case GL_GREEN_INTEGER_EXT:
+   case GL_BLUE_INTEGER_EXT:
+   case GL_ALPHA_INTEGER_EXT:
+   case GL_RGB_INTEGER_EXT:
+   case GL_RGBA_INTEGER_EXT:
+   case GL_BGR_INTEGER_EXT:
+   case GL_BGRA_INTEGER_EXT:
+   case GL_LUMINANCE_INTEGER_EXT:
+   case GL_LUMINANCE_ALPHA_INTEGER_EXT:
+      /* Nothing special since GL_DRAW_BUFFER could be GL_NONE. */
+      /* Could assert that colorbuffer has RedBits > 0 */
+      break;
+   case GL_DEPTH:
+   case GL_DEPTH_COMPONENT:
+      if (!att[BUFFER_DEPTH].Renderbuffer) {
+         return GL_FALSE;
+      }
+      /*ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);*/
+      break;
+   case GL_STENCIL:
+   case GL_STENCIL_INDEX:
+      if (!att[BUFFER_STENCIL].Renderbuffer) {
+         return GL_FALSE;
+      }
+      /*ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);*/
+      break;
+   case GL_DEPTH_STENCIL_EXT:
+      if (!att[BUFFER_DEPTH].Renderbuffer ||
+          !att[BUFFER_STENCIL].Renderbuffer) {
+         return GL_FALSE;
+      }
+      /*
+      ASSERT(att[BUFFER_DEPTH].Renderbuffer->DepthBits > 0);
+      ASSERT(att[BUFFER_STENCIL].Renderbuffer->StencilBits > 0);
+      */
+      break;
+   default:
+      _mesa_problem(ctx,
+                    "Unexpected format 0x%x in _mesa_dest_buffer_exists",
+                    format);
+      return GL_FALSE;
+   }
+
+   /* OK */
+   return GL_TRUE;
+}
+
+
+/**
+ * Used to answer the GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES query.
+ */
+GLenum
+_mesa_get_color_read_format(struct gl_context *ctx)
+{
+   switch (ctx->ReadBuffer->_ColorReadBuffer->Format) {
+   case MESA_FORMAT_ARGB8888:
+      return GL_BGRA;
+   case MESA_FORMAT_RGB565:
+      return GL_BGR;
+   default:
+      return GL_RGBA;
+   }
+}
+
+
+/**
+ * Used to answer the GL_IMPLEMENTATION_COLOR_READ_TYPE_OES query.
+ */
+GLenum
+_mesa_get_color_read_type(struct gl_context *ctx)
+{
+   switch (ctx->ReadBuffer->_ColorReadBuffer->Format) {
+   case MESA_FORMAT_ARGB8888:
+      return GL_UNSIGNED_BYTE;
+   case MESA_FORMAT_RGB565:
+      return GL_UNSIGNED_SHORT_5_6_5_REV;
+   default:
+      return GL_UNSIGNED_BYTE;
+   }
+}
+
+
+/**
+ * Print framebuffer info to stderr, for debugging.
+ */
+void
+_mesa_print_framebuffer(const struct gl_framebuffer *fb)
+{
+   GLuint i;
+
+   fprintf(stderr, "Mesa Framebuffer %u at %p\n", fb->Name, (void *) fb);
+   fprintf(stderr, "  Size: %u x %u  Status: %s\n", fb->Width, fb->Height,
+           _mesa_lookup_enum_by_nr(fb->_Status));
+   fprintf(stderr, "  Attachments:\n");
+
+   for (i = 0; i < BUFFER_COUNT; i++) {
+      const struct gl_renderbuffer_attachment *att = &fb->Attachment[i];
+      if (att->Type == GL_TEXTURE) {
+         const struct gl_texture_image *texImage =
+            _mesa_get_attachment_teximage_const(att);
+         fprintf(stderr,
+                 "  %2d: Texture %u, level %u, face %u, slice %u, complete %d\n",
+                 i, att->Texture->Name, att->TextureLevel, att->CubeMapFace,
+                 att->Zoffset, att->Complete);
+         fprintf(stderr, "       Size: %u x %u x %u  Format %s\n",
+                 texImage->Width, texImage->Height, texImage->Depth,
+                 _mesa_get_format_name(texImage->TexFormat));
+      }
+      else if (att->Type == GL_RENDERBUFFER) {
+         fprintf(stderr, "  %2d: Renderbuffer %u, complete %d\n",
+                 i, att->Renderbuffer->Name, att->Complete);
+         fprintf(stderr, "       Size: %u x %u  Format %s\n",
+                 att->Renderbuffer->Width, att->Renderbuffer->Height,
+                 _mesa_get_format_name(att->Renderbuffer->Format));
+      }
+      else {
+         fprintf(stderr, "  %2d: none\n", i);
+      }
+   }
+}
diff --git a/mesalib/src/mesa/main/texfetch.c b/mesalib/src/mesa/main/texfetch.c
index caabc19bb..d091789ff 100644
--- a/mesalib/src/mesa/main/texfetch.c
+++ b/mesalib/src/mesa/main/texfetch.c
@@ -631,6 +631,34 @@ texfetch_funcs[MESA_FORMAT_COUNT] =
       fetch_texel_3d_f_intensity_f16,
       store_texel_intensity_f16
    },
+   {
+      MESA_FORMAT_R_FLOAT32,
+      fetch_texel_1d_f_r_f32,
+      fetch_texel_2d_f_r_f32,
+      fetch_texel_3d_f_r_f32,
+      store_texel_r_f32
+   },
+   {
+      MESA_FORMAT_R_FLOAT16,
+      fetch_texel_1d_f_r_f16,
+      fetch_texel_2d_f_r_f16,
+      fetch_texel_3d_f_r_f16,
+      store_texel_r_f16
+   },
+   {
+      MESA_FORMAT_RG_FLOAT32,
+      fetch_texel_1d_f_rg_f32,
+      fetch_texel_2d_f_rg_f32,
+      fetch_texel_3d_f_rg_f32,
+      store_texel_rg_f32
+   },
+   {
+      MESA_FORMAT_RG_FLOAT16,
+      fetch_texel_1d_f_rg_f16,
+      fetch_texel_2d_f_rg_f16,
+      fetch_texel_3d_f_rg_f16,
+      store_texel_rg_f16
+   },
 
    /* non-normalized, signed int */
    {
diff --git a/mesalib/src/mesa/main/texfetch_tmp.h b/mesalib/src/mesa/main/texfetch_tmp.h
index f1f6a01a4..0b9d5da07 100644
--- a/mesalib/src/mesa/main/texfetch_tmp.h
+++ b/mesalib/src/mesa/main/texfetch_tmp.h
@@ -438,6 +438,110 @@ static void store_texel_intensity_f16(struct gl_texture_image *texImage,
 #endif
 
 
+/* MESA_FORMAT_R_FLOAT32 *****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D R_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_r_f32)( const struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+   texel[RCOMP] = src[0];
+   texel[GCOMP] = 0.0F;
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_r_f32(struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+   dst[0] = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_R_FLOAT16 *****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D R_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_r_f16)( const struct gl_texture_image *texImage,
+                            GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+   texel[RCOMP] = _mesa_half_to_float(src[0]);
+   texel[GCOMP] = 0.0F;
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_r_f16(struct gl_texture_image *texImage,
+                              GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+   dst[0] = _mesa_float_to_half(rgba[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_RG_FLOAT32 ****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D RG_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_rg_f32)( const struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
+   texel[RCOMP] = src[0];
+   texel[GCOMP] = src[1];
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rg_f32(struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
+   dst[0] = rgba[RCOMP];
+   dst[1] = rgba[GCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_RG_FLOAT16 ****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D RG_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_rg_f16)( const struct gl_texture_image *texImage,
+                             GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
+   texel[RCOMP] = _mesa_half_to_float(src[0]);
+   texel[GCOMP] = _mesa_half_to_float(src[1]);
+   texel[BCOMP] = 0.0F;
+   texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rg_f16(struct gl_texture_image *texImage,
+                               GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLfloat *rgba = (const GLfloat *) texel;
+   GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
+   dst[0] = _mesa_float_to_half(rgba[RCOMP]);
+   dst[1] = _mesa_float_to_half(rgba[GCOMP]);
+}
+#endif
 
 
 /*
diff --git a/mesalib/src/mesa/main/texformat.c b/mesalib/src/mesa/main/texformat.c
index da907455b..97b905fd3 100644
--- a/mesalib/src/mesa/main/texformat.c
+++ b/mesalib/src/mesa/main/texformat.c
@@ -628,6 +628,22 @@ _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat,
       }
    }
 
+   if (ctx->Extensions.ARB_texture_rg && ctx->Extensions.ARB_texture_float) {
+      switch (internalFormat) {
+      case GL_R16F:
+	 return MESA_FORMAT_R_FLOAT16;
+      case GL_R32F:
+         return MESA_FORMAT_R_FLOAT32;
+      case GL_RG16F:
+	 return MESA_FORMAT_RG_FLOAT16;
+      case GL_RG32F:
+         return MESA_FORMAT_RG_FLOAT32;
+
+      default:
+         ; /* fallthrough */
+      }
+   }
+
    if (ctx->Extensions.EXT_texture_format_BGRA8888) {
       switch (internalFormat) {
       case GL_BGRA:
diff --git a/mesalib/src/mesa/main/texstore.c b/mesalib/src/mesa/main/texstore.c
index 87cb327d2..9a690529a 100644
--- a/mesalib/src/mesa/main/texstore.c
+++ b/mesalib/src/mesa/main/texstore.c
@@ -3535,13 +3535,17 @@ _mesa_texstore_rgba_float32(TEXSTORE_PARAMS)
           dstFormat == MESA_FORMAT_ALPHA_FLOAT32 ||
           dstFormat == MESA_FORMAT_LUMINANCE_FLOAT32 ||
           dstFormat == MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32 ||
-          dstFormat == MESA_FORMAT_INTENSITY_FLOAT32);
+          dstFormat == MESA_FORMAT_INTENSITY_FLOAT32 ||
+          dstFormat == MESA_FORMAT_R_FLOAT32 ||
+          dstFormat == MESA_FORMAT_RG_FLOAT32);
    ASSERT(baseInternalFormat == GL_RGBA ||
           baseInternalFormat == GL_RGB ||
           baseInternalFormat == GL_ALPHA ||
           baseInternalFormat == GL_LUMINANCE ||
           baseInternalFormat == GL_LUMINANCE_ALPHA ||
-          baseInternalFormat == GL_INTENSITY);
+          baseInternalFormat == GL_INTENSITY ||
+          baseInternalFormat == GL_RED ||
+          baseInternalFormat == GL_RG);
    ASSERT(texelBytes == components * sizeof(GLfloat));
 
    if (!ctx->_ImageTransferState &&
@@ -3605,13 +3609,17 @@ _mesa_texstore_rgba_float16(TEXSTORE_PARAMS)
           dstFormat == MESA_FORMAT_ALPHA_FLOAT16 ||
           dstFormat == MESA_FORMAT_LUMINANCE_FLOAT16 ||
           dstFormat == MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16 ||
-          dstFormat == MESA_FORMAT_INTENSITY_FLOAT16);
+          dstFormat == MESA_FORMAT_INTENSITY_FLOAT16 ||
+          dstFormat == MESA_FORMAT_R_FLOAT16 ||
+          dstFormat == MESA_FORMAT_RG_FLOAT16);
    ASSERT(baseInternalFormat == GL_RGBA ||
           baseInternalFormat == GL_RGB ||
           baseInternalFormat == GL_ALPHA ||
           baseInternalFormat == GL_LUMINANCE ||
           baseInternalFormat == GL_LUMINANCE_ALPHA ||
-          baseInternalFormat == GL_INTENSITY);
+          baseInternalFormat == GL_INTENSITY ||
+          baseInternalFormat == GL_RED ||
+          baseInternalFormat == GL_RG);
    ASSERT(texelBytes == components * sizeof(GLhalfARB));
 
    if (!ctx->_ImageTransferState &&
@@ -4252,6 +4260,10 @@ texstore_funcs[MESA_FORMAT_COUNT] =
    { MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16, _mesa_texstore_rgba_float16 },
    { MESA_FORMAT_INTENSITY_FLOAT32, _mesa_texstore_rgba_float32 },
    { MESA_FORMAT_INTENSITY_FLOAT16, _mesa_texstore_rgba_float16 },
+   { MESA_FORMAT_R_FLOAT32, _mesa_texstore_rgba_float32 },
+   { MESA_FORMAT_R_FLOAT16, _mesa_texstore_rgba_float16 },
+   { MESA_FORMAT_RG_FLOAT32, _mesa_texstore_rgba_float32 },
+   { MESA_FORMAT_RG_FLOAT16, _mesa_texstore_rgba_float16 },
 
    { MESA_FORMAT_RGBA_INT8, _mesa_texstore_rgba_int8 },
    { MESA_FORMAT_RGBA_INT16, _mesa_texstore_rgba_int16 },
diff --git a/mesalib/src/mesa/state_tracker/st_cb_readpixels.c b/mesalib/src/mesa/state_tracker/st_cb_readpixels.c
index 03f58bf0f..fdb7770e4 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_readpixels.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_readpixels.c
@@ -201,7 +201,8 @@ st_fast_readpixels(struct gl_context *ctx, struct st_renderbuffer *strb,
    enum combination {
       A8R8G8B8_UNORM_TO_RGBA_UBYTE,
       A8R8G8B8_UNORM_TO_RGB_UBYTE,
-      A8R8G8B8_UNORM_TO_BGRA_UINT
+      A8R8G8B8_UNORM_TO_BGRA_UINT,
+      A8R8G8B8_UNORM_TO_RGBA_UINT
    } combo;
 
    if (ctx->_ImageTransferState)
@@ -219,6 +220,10 @@ st_fast_readpixels(struct gl_context *ctx, struct st_renderbuffer *strb,
             format == GL_BGRA && type == GL_UNSIGNED_INT_8_8_8_8_REV) {
       combo = A8R8G8B8_UNORM_TO_BGRA_UINT;
    }
+   else if (strb->format == PIPE_FORMAT_B8G8R8A8_UNORM &&
+            format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8) {
+      combo = A8R8G8B8_UNORM_TO_RGBA_UINT;
+   }
    else {
       return GL_FALSE;
    }
@@ -305,6 +310,20 @@ st_fast_readpixels(struct gl_context *ctx, struct st_renderbuffer *strb,
             y += dy;
          }
          break;
+      case A8R8G8B8_UNORM_TO_RGBA_UINT:
+         for (row = 0; row < height; row++) {
+            const GLubyte *src = map + y * trans->stride;
+            for (col = 0; col < width; col++) {
+               GLuint pixel = ((GLuint *) src)[col];
+               dst[col*4+0] = (pixel >> 24) & 0xff;
+               dst[col*4+1] = (pixel >> 0) & 0xff;
+               dst[col*4+2] = (pixel >> 8) & 0xff;
+               dst[col*4+3] = (pixel >> 16) & 0xff;
+            }
+            dst += dstStride;
+            y += dy;
+         }
+         break;
       default:
          ; /* nothing */
       }
diff --git a/mesalib/src/mesa/state_tracker/st_cb_texture.c b/mesalib/src/mesa/state_tracker/st_cb_texture.c
index 914c06b70..43c24ae95 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_texture.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_texture.c
@@ -600,7 +600,12 @@ st_TexImage(struct gl_context * ctx,
     * memory or malloc space for it.
     */
    if (stImage->pt) {
-      /* Store the image in the gallium texture memory buffer */
+      if (!pixels) {
+         /* We've allocated texture resource, but have no pixel data - all done. */
+         goto done;
+      }
+
+      /* Store the image in the gallium transfer object */
       if (format == GL_DEPTH_COMPONENT &&
           util_format_is_depth_and_stencil(stImage->pt->format))
          transfer_usage = PIPE_TRANSFER_READ_WRITE;
diff --git a/mesalib/src/mesa/state_tracker/st_extensions.c b/mesalib/src/mesa/state_tracker/st_extensions.c
index 9bc9d7a10..bdc08949d 100644
--- a/mesalib/src/mesa/state_tracker/st_extensions.c
+++ b/mesalib/src/mesa/state_tracker/st_extensions.c
@@ -382,6 +382,18 @@ void st_init_extensions(struct st_context *st)
       ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
    }
 
+   /* float support - assume nothing exclusively supports 64-bit floats */
+   if (screen->is_format_supported(screen, PIPE_FORMAT_R32G32B32A32_FLOAT,
+                                   PIPE_TEXTURE_2D, 0,
+                                   PIPE_BIND_SAMPLER_VIEW |
+                                   PIPE_BIND_RENDER_TARGET) &&
+      screen->is_format_supported(screen, PIPE_FORMAT_R16G16B16A16_FLOAT,
+                                   PIPE_TEXTURE_2D, 0,
+                                   PIPE_BIND_SAMPLER_VIEW |
+                                   PIPE_BIND_RENDER_TARGET)) {
+      ctx->Extensions.ARB_texture_float = GL_TRUE;
+   }
+
    /* sRGB support */
    if (screen->is_format_supported(screen, PIPE_FORMAT_A8B8G8R8_SRGB,
                                    PIPE_TEXTURE_2D, 0,
diff --git a/mesalib/src/mesa/state_tracker/st_format.c b/mesalib/src/mesa/state_tracker/st_format.c
index 957a06c08..8e50dbda6 100644
--- a/mesalib/src/mesa/state_tracker/st_format.c
+++ b/mesalib/src/mesa/state_tracker/st_format.c
@@ -214,6 +214,39 @@ st_mesa_format_to_pipe_format(gl_format mesaFormat)
    case MESA_FORMAT_SARGB8:
       return PIPE_FORMAT_B8G8R8A8_SRGB;
 #endif
+   case MESA_FORMAT_RGBA_FLOAT32:
+      return PIPE_FORMAT_R32G32B32A32_FLOAT;
+   case MESA_FORMAT_RGBA_FLOAT16:
+      return PIPE_FORMAT_R16G16B16A16_FLOAT;
+   case MESA_FORMAT_RGB_FLOAT32:
+      return PIPE_FORMAT_R32G32B32_FLOAT;
+   case MESA_FORMAT_RGB_FLOAT16:
+      return PIPE_FORMAT_R16G16B16_FLOAT;
+   case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
+      return PIPE_FORMAT_L32A32_FLOAT;
+   case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
+      return PIPE_FORMAT_L16A16_FLOAT;
+   case MESA_FORMAT_LUMINANCE_FLOAT32:
+      return PIPE_FORMAT_L32_FLOAT;
+   case MESA_FORMAT_LUMINANCE_FLOAT16:
+      return PIPE_FORMAT_L16_FLOAT;
+   case MESA_FORMAT_ALPHA_FLOAT32:
+      return PIPE_FORMAT_A32_FLOAT;
+   case MESA_FORMAT_ALPHA_FLOAT16:
+      return PIPE_FORMAT_A16_FLOAT;
+   case MESA_FORMAT_INTENSITY_FLOAT32:
+      return PIPE_FORMAT_I32_FLOAT;
+   case MESA_FORMAT_INTENSITY_FLOAT16:
+      return PIPE_FORMAT_I16_FLOAT;
+   case MESA_FORMAT_R_FLOAT32:
+      return PIPE_FORMAT_R32_FLOAT;
+   case MESA_FORMAT_R_FLOAT16:
+      return PIPE_FORMAT_R16_FLOAT;
+   case MESA_FORMAT_RG_FLOAT32:
+      return PIPE_FORMAT_R32G32_FLOAT;
+   case MESA_FORMAT_RG_FLOAT16:
+      return PIPE_FORMAT_R16G16_FLOAT;
+
    case MESA_FORMAT_R8:
       return PIPE_FORMAT_R8_UNORM;
    case MESA_FORMAT_R16:
@@ -403,6 +436,38 @@ st_pipe_format_to_mesa_format(enum pipe_format format)
    case PIPE_FORMAT_B8G8R8A8_SRGB:
       return MESA_FORMAT_SARGB8;
 #endif
+   case PIPE_FORMAT_R32G32B32A32_FLOAT:
+      return MESA_FORMAT_RGBA_FLOAT32;
+   case PIPE_FORMAT_R16G16B16A16_FLOAT:
+      return MESA_FORMAT_RGBA_FLOAT16;
+   case PIPE_FORMAT_R32G32B32_FLOAT:
+      return MESA_FORMAT_RGB_FLOAT32;
+   case PIPE_FORMAT_R16G16B16_FLOAT:
+      return MESA_FORMAT_RGB_FLOAT16;
+   case PIPE_FORMAT_L32A32_FLOAT:
+      return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32;
+   case PIPE_FORMAT_L16A16_FLOAT:
+      return MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16;
+   case PIPE_FORMAT_L32_FLOAT:
+      return MESA_FORMAT_LUMINANCE_FLOAT32;
+   case PIPE_FORMAT_L16_FLOAT:
+      return MESA_FORMAT_LUMINANCE_FLOAT16;
+   case PIPE_FORMAT_A32_FLOAT:
+      return MESA_FORMAT_ALPHA_FLOAT32;
+   case PIPE_FORMAT_A16_FLOAT:
+      return MESA_FORMAT_ALPHA_FLOAT16;
+   case PIPE_FORMAT_I32_FLOAT:
+      return MESA_FORMAT_INTENSITY_FLOAT32;
+   case PIPE_FORMAT_I16_FLOAT:
+      return MESA_FORMAT_INTENSITY_FLOAT16;
+   case PIPE_FORMAT_R32_FLOAT:
+      return MESA_FORMAT_R_FLOAT32;
+   case PIPE_FORMAT_R16_FLOAT:
+      return MESA_FORMAT_R_FLOAT16;
+   case PIPE_FORMAT_R32G32_FLOAT:
+      return MESA_FORMAT_RG_FLOAT32;
+   case PIPE_FORMAT_R16G16_FLOAT:
+      return MESA_FORMAT_RG_FLOAT16;
 
    case PIPE_FORMAT_R8_UNORM:
       return MESA_FORMAT_R8;
@@ -887,6 +952,178 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
          return PIPE_FORMAT_L8_SRGB;
       return default_srgba_format( screen, target, sample_count, bindings);
 
+   /* prefer formats in order of data size, choosing 16-bit ones if equal sized */
+   case GL_RGBA16F_ARB:
+   case GL_RGB16F_ARB:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_R16G16B16A16_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+   case GL_LUMINANCE_ALPHA16F_ARB:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_L16A16_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT,
+               PIPE_FORMAT_L32A32_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+   case GL_ALPHA16F_ARB:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_A16_FLOAT,
+               PIPE_FORMAT_L16A16_FLOAT,
+               PIPE_FORMAT_A32_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT,
+               PIPE_FORMAT_L32A32_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+   case GL_INTENSITY16F_ARB:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_I16_FLOAT,
+               PIPE_FORMAT_L16A16_FLOAT,
+               PIPE_FORMAT_I32_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT,
+               PIPE_FORMAT_L32A32_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+   case GL_LUMINANCE16F_ARB:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_L16_FLOAT,
+               PIPE_FORMAT_L16A16_FLOAT,
+               PIPE_FORMAT_L32_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT,
+               PIPE_FORMAT_L32A32_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+   case GL_R16F:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_R16_FLOAT,
+               PIPE_FORMAT_R16G16_FLOAT,
+               PIPE_FORMAT_R32_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT,
+               PIPE_FORMAT_R32G32_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+   case GL_RG16F:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_R16G16_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT,
+               PIPE_FORMAT_R32G32_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+
+   /* try a 32-bit format if available, otherwise fallback to a 16-bit one */
+   case GL_RGBA32F_ARB:
+   case GL_RGB32F_ARB:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_R32G32B32A32_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+   case GL_LUMINANCE_ALPHA32F_ARB:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_L32A32_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT,
+               PIPE_FORMAT_L16A16_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+   case GL_ALPHA32F_ARB:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_A32_FLOAT,
+               PIPE_FORMAT_L32A32_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT,
+               PIPE_FORMAT_A16_FLOAT,
+               PIPE_FORMAT_L16A16_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+   case GL_INTENSITY32F_ARB:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_I32_FLOAT,
+               PIPE_FORMAT_L32A32_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT,
+               PIPE_FORMAT_I16_FLOAT,
+               PIPE_FORMAT_L16A16_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+   case GL_LUMINANCE32F_ARB:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_L32_FLOAT,
+               PIPE_FORMAT_L32A32_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT,
+               PIPE_FORMAT_L16_FLOAT,
+               PIPE_FORMAT_L16A16_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+   case GL_R32F:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_R32_FLOAT,
+               PIPE_FORMAT_R32G32_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT,
+               PIPE_FORMAT_R16_FLOAT,
+               PIPE_FORMAT_R16G16_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+   case GL_RG32F:
+      {
+         static const enum pipe_format formats[] = {
+               PIPE_FORMAT_R32G32_FLOAT,
+               PIPE_FORMAT_R32G32B32A32_FLOAT,
+               PIPE_FORMAT_R16G16_FLOAT,
+               PIPE_FORMAT_R16G16B16A16_FLOAT
+         };
+         return find_supported_format(screen, formats, Elements(formats),
+               target, sample_count, bindings);
+      }
+
    case GL_RED:
    case GL_R8:
       if (screen->is_format_supported(screen, PIPE_FORMAT_R8_UNORM, target,