7 files changed, 3866 insertions, 3852 deletions

diff --git a/mesalib/src/mesa/drivers/dri/Makefile.template b/mesalib/src/mesa/drivers/dri/Makefile.template
index d1a119379..195d60a9c 100644
--- a/mesalib/src/mesa/drivers/dri/Makefile.template
+++ b/mesalib/src/mesa/drivers/dri/Makefile.template
@@ -1,111 +1,111 @@
-# -*-makefile-*-
-
-COMMON_GALLIUM_SOURCES = \
-        ../common/utils.c \
-        ../common/vblank.c \
-        ../common/dri_util.c \
-        ../common/xmlconfig.c
-
-COMMON_SOURCES = $(COMMON_GALLIUM_SOURCES) \
-        ../../common/driverfuncs.c \
-        ../common/texmem.c \
-        ../common/drirenderbuffer.c
-
-INCLUDES = $(SHARED_INCLUDES) $(EXPAT_INCLUDES)
-
-OBJECTS = $(C_SOURCES:.c=.o) \
-	  $(CXX_SOURCES:.cpp=.o) \
-	  $(ASM_SOURCES:.S=.o) 
-
-
-### Include directories
-SHARED_INCLUDES = \
-	-I. \
-	-I$(TOP)/src/mesa/drivers/dri/common \
-	-Iserver \
-	-I$(TOP)/include \
-	-I$(TOP)/src/mapi \
-	-I$(TOP)/src/mesa \
-	-I$(TOP)/src/egl/main \
-	-I$(TOP)/src/egl/drivers/dri \
-	$(LIBDRM_CFLAGS)
-
-CFLAGS += $(API_DEFINES)
-CXXFLAGS += $(API_DEFINES)
-
-##### RULES #####
-
-.c.o:
-	$(CC) -c $(INCLUDES) $(DRI_CFLAGS) $(DRIVER_DEFINES) $< -o $@
-
-.cpp.o:
-	$(CC) -c $(INCLUDES) $(DRI_CXXFLAGS) $(DRIVER_DEFINES) $< -o $@
-
-.S.o:
-	$(CC) -c $(INCLUDES) $(DRI_CFLAGS) $(DRIVER_DEFINES) $< -o $@
-
-
-##### TARGETS #####
-
-default: subdirs lib
-
-
-.PHONY: lib
-lib: symlinks subdirs depend
-	@$(MAKE) $(LIBNAME) $(TOP)/$(LIB_DIR)/$(LIBNAME)
-
-$(LIBNAME): $(OBJECTS) $(EXTRA_MODULES) $(MESA_MODULES) Makefile \
-		$(TOP)/src/mesa/drivers/dri/Makefile.template $(TOP)/src/mesa/drivers/dri/common/dri_test.o
-	$(MKLIB) -o $@.tmp -noprefix -linker '$(CXX)' -ldflags '$(LDFLAGS)' \
-		$(OBJECTS) $(EXTRA_MODULES) $(DRI_LIB_DEPS)
-	$(CXX) $(CFLAGS) -o $@.test $(TOP)/src/mesa/drivers/dri/common/dri_test.o $@.tmp $(DRI_LIB_DEPS)
-	@rm -f $@.test
-	mv -f $@.tmp $@
-
-
-$(TOP)/$(LIB_DIR)/$(LIBNAME): $(LIBNAME)
-	$(INSTALL) $(LIBNAME) $(TOP)/$(LIB_DIR) 
-
-
-# If the Makefile defined SUBDIRS, run make in each
-.PHONY: subdirs
-subdirs:
-	@if test -n "$(SUBDIRS)" ; then \
-		for dir in $(SUBDIRS) ; do \
-			if [ -d $$dir ] ; then \
-				(cd $$dir && $(MAKE)) || exit 1; \
-			fi \
-		done \
-	fi
-
-
-.PHONY: symlinks
-symlinks:
-
-
-depend: $(C_SOURCES) $(CXX_SOURCES) $(ASM_SOURCES) $(SYMLINKS)
-	@ echo "running $(MKDEP)"
-	@ rm -f depend
-	@ touch depend
-	@ $(MKDEP) $(MKDEP_OPTIONS) $(DRIVER_DEFINES) $(INCLUDES) \
-		$(C_SOURCES) $(CXX_SOURCES) \
-		$(ASM_SOURCES) > /dev/null 2>/dev/null
-
-
-# Emacs tags
-tags:
-	etags `find . -name \*.[ch]` `find ../include`
-
-
-# Remove .o and backup files
-clean:
-	-rm -f *.o */*.o *~ *.so *~ server/*.o $(SYMLINKS)
-	-rm -f depend depend.bak
-
-
-install: $(LIBNAME)
-	$(INSTALL) -d $(DESTDIR)$(DRI_DRIVER_INSTALL_DIR)
-	$(MINSTALL) -m 755 $(LIBNAME) $(DESTDIR)$(DRI_DRIVER_INSTALL_DIR)
-
-
--include depend
+# -*-makefile-*-

+

+COMMON_GALLIUM_SOURCES = \

+        ../common/utils.c \

+        ../common/vblank.c \

+        ../common/dri_util.c \

+        ../common/xmlconfig.c

+

+COMMON_SOURCES = $(COMMON_GALLIUM_SOURCES) \

+        ../../common/driverfuncs.c \

+        ../common/texmem.c \

+        ../common/drirenderbuffer.c

+

+INCLUDES = $(SHARED_INCLUDES) $(EXPAT_INCLUDES)

+

+OBJECTS = $(C_SOURCES:.c=.o) \

+	  $(CXX_SOURCES:.cpp=.o) \

+	  $(ASM_SOURCES:.S=.o) 

+

+

+### Include directories

+SHARED_INCLUDES = \

+	-I. \

+	-I$(TOP)/src/mesa/drivers/dri/common \

+	-Iserver \

+	-I$(TOP)/include \

+	-I$(TOP)/src/mapi \

+	-I$(TOP)/src/mesa \

+	-I$(TOP)/src/egl/main \

+	-I$(TOP)/src/egl/drivers/dri \

+	$(LIBDRM_CFLAGS)

+

+CFLAGS += $(API_DEFINES)

+CXXFLAGS += $(API_DEFINES)

+

+##### RULES #####

+

+.c.o:

+	$(CC) -c $(INCLUDES) $(DRI_CFLAGS) $(DRIVER_DEFINES) $< -o $@

+

+.cpp.o:

+	$(CC) -c $(INCLUDES) $(DRI_CXXFLAGS) $(DRIVER_DEFINES) $< -o $@

+

+.S.o:

+	$(CC) -c $(INCLUDES) $(DRI_CFLAGS) $(DRIVER_DEFINES) $< -o $@

+

+

+##### TARGETS #####

+

+default: subdirs lib

+

+

+.PHONY: lib

+lib: symlinks subdirs depend

+	@$(MAKE) $(LIBNAME) $(TOP)/$(LIB_DIR)/$(LIBNAME)

+

+$(LIBNAME): $(OBJECTS) $(EXTRA_MODULES) $(MESA_MODULES) Makefile \

+		$(TOP)/src/mesa/drivers/dri/Makefile.template $(TOP)/src/mesa/drivers/dri/common/dri_test.o

+	$(MKLIB) -o $@.tmp -noprefix -linker '$(CXX)' -ldflags '$(LDFLAGS)' \

+		$(OBJECTS) $(EXTRA_MODULES) $(DRI_LIB_DEPS)

+	$(CXX) $(CFLAGS) -o $@.test $(TOP)/src/mesa/drivers/dri/common/dri_test.o $@.tmp $(DRI_LIB_DEPS)

+	@rm -f $@.test

+	mv -f $@.tmp $@

+

+

+$(TOP)/$(LIB_DIR)/$(LIBNAME): $(LIBNAME)

+	$(INSTALL) $(LIBNAME) $(TOP)/$(LIB_DIR) 

+

+

+# If the Makefile defined SUBDIRS, run make in each

+.PHONY: subdirs

+subdirs:

+	@if test -n "$(SUBDIRS)" ; then \

+		for dir in $(SUBDIRS) ; do \

+			if [ -d $$dir ] ; then \

+				(cd $$dir && $(MAKE)) || exit 1; \

+			fi \

+		done \

+	fi

+

+

+.PHONY: symlinks

+symlinks:

+

+

+depend: $(C_SOURCES) $(CXX_SOURCES) $(ASM_SOURCES) $(SYMLINKS)

+	@ echo "running $(MKDEP)"

+	@ rm -f depend

+	@ touch depend

+	@ $(MKDEP) $(MKDEP_OPTIONS) $(DRIVER_DEFINES) $(INCLUDES) \

+		$(C_SOURCES) $(CXX_SOURCES) \

+		$(ASM_SOURCES) > /dev/null 2>/dev/null

+

+

+# Emacs tags

+tags:

+	etags `find . -name \*.[ch]` `find ../include`

+

+

+# Remove .o and backup files

+clean:

+	-rm -f *.o */*.o *~ *.so *~ server/*.o $(SYMLINKS)

+	-rm -f depend depend.bak

+

+

+install: $(LIBNAME)

+	$(INSTALL) -d $(DESTDIR)$(DRI_DRIVER_INSTALL_DIR)

+	$(MINSTALL) -m 755 $(LIBNAME) $(DESTDIR)$(DRI_DRIVER_INSTALL_DIR)

+

+

+-include depend

diff --git a/mesalib/src/mesa/drivers/dri/common/dri_util.c b/mesalib/src/mesa/drivers/dri/common/dri_util.c
index 82638fa72..6d3dd0a2c 100644
--- a/mesalib/src/mesa/drivers/dri/common/dri_util.c
+++ b/mesalib/src/mesa/drivers/dri/common/dri_util.c
@@ -1,1030 +1,1030 @@
-/**
- * \file dri_util.c
- * DRI utility functions.
- *
- * This module acts as glue between GLX and the actual hardware driver.  A DRI
- * driver doesn't really \e have to use any of this - it's optional.  But, some
- * useful stuff is done here that otherwise would have to be duplicated in most
- * drivers.
- * 
- * Basically, these utility functions take care of some of the dirty details of
- * screen initialization, context creation, context binding, DRM setup, etc.
- *
- * These functions are compiled into each DRI driver so libGL.so knows nothing
- * about them.
- */
-
-
-#include <assert.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <stdio.h>
-
-#ifndef MAP_FAILED
-#define MAP_FAILED ((void *)-1)
-#endif
-
-#include "main/imports.h"
-#define None 0
-
-#include "dri_util.h"
-#include "drm_sarea.h"
-#include "utils.h"
-#include "xmlpool.h"
-#include "../glsl/glsl_parser_extras.h"
-
-PUBLIC const char __dri2ConfigOptions[] =
-   DRI_CONF_BEGIN
-      DRI_CONF_SECTION_PERFORMANCE
-         DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_1)
-      DRI_CONF_SECTION_END
-   DRI_CONF_END;
-
-static const uint __dri2NConfigOptions = 1;
-
-#ifndef GLX_OML_sync_control
-typedef GLboolean ( * PFNGLXGETMSCRATEOMLPROC) (__DRIdrawable *drawable, int32_t *numerator, int32_t *denominator);
-#endif
-
-static void dri_get_drawable(__DRIdrawable *pdp);
-static void dri_put_drawable(__DRIdrawable *pdp);
-
-/**
- * This is just a token extension used to signal that the driver
- * supports setting a read drawable.
- */
-const __DRIextension driReadDrawableExtension = {
-    __DRI_READ_DRAWABLE, __DRI_READ_DRAWABLE_VERSION
-};
-
-GLint
-driIntersectArea( drm_clip_rect_t rect1, drm_clip_rect_t rect2 )
-{
-   if (rect2.x1 > rect1.x1) rect1.x1 = rect2.x1;
-   if (rect2.x2 < rect1.x2) rect1.x2 = rect2.x2;
-   if (rect2.y1 > rect1.y1) rect1.y1 = rect2.y1;
-   if (rect2.y2 < rect1.y2) rect1.y2 = rect2.y2;
-
-   if (rect1.x1 > rect1.x2 || rect1.y1 > rect1.y2) return 0;
-
-   return (rect1.x2 - rect1.x1) * (rect1.y2 - rect1.y1);
-}
-
-/*****************************************************************/
-/** \name Context (un)binding functions                          */
-/*****************************************************************/
-/*@{*/
-
-/**
- * Unbind context.
- * 
- * \param scrn the screen.
- * \param gc context.
- *
- * \return \c GL_TRUE on success, or \c GL_FALSE on failure.
- * 
- * \internal
- * This function calls __DriverAPIRec::UnbindContext, and then decrements
- * __DRIdrawableRec::refcount which must be non-zero for a successful
- * return.
- * 
- * While casting the opaque private pointers associated with the parameters
- * into their respective real types it also assures they are not \c NULL. 
- */
-static int driUnbindContext(__DRIcontext *pcp)
-{
-    __DRIscreen *psp;
-    __DRIdrawable *pdp;
-    __DRIdrawable *prp;
-
-    /*
-    ** Assume error checking is done properly in glXMakeCurrent before
-    ** calling driUnbindContext.
-    */
-
-    if (pcp == NULL)
-        return GL_FALSE;
-
-    psp = pcp->driScreenPriv;
-    pdp = pcp->driDrawablePriv;
-    prp = pcp->driReadablePriv;
-
-    /* already unbound */
-    if (!pdp && !prp)
-      return GL_TRUE;
-    /* Let driver unbind drawable from context */
-    (*psp->DriverAPI.UnbindContext)(pcp);
-
-    assert(pdp);
-    if (pdp->refcount == 0) {
-	/* ERROR!!! */
-	return GL_FALSE;
-    }
-
-    dri_put_drawable(pdp);
-
-    if (prp != pdp) {
-        if (prp->refcount == 0) {
-	    /* ERROR!!! */
-	    return GL_FALSE;
-	}
-
-    	dri_put_drawable(prp);
-    }
-
-
-    /* XXX this is disabled so that if we call SwapBuffers on an unbound
-     * window we can determine the last context bound to the window and
-     * use that context's lock. (BrianP, 2-Dec-2000)
-     */
-    pcp->driDrawablePriv = pcp->driReadablePriv = NULL;
-
-    return GL_TRUE;
-}
-
-/**
- * This function takes both a read buffer and a draw buffer.  This is needed
- * for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent
- * function.
- */
-static int driBindContext(__DRIcontext *pcp,
-			  __DRIdrawable *pdp,
-			  __DRIdrawable *prp)
-{
-    __DRIscreen *psp = NULL;
-
-    /*
-    ** Assume error checking is done properly in glXMakeCurrent before
-    ** calling driUnbindContext.
-    */
-
-    if (!pcp)
-	return GL_FALSE;
-
-    /* Bind the drawable to the context */
-    psp = pcp->driScreenPriv;
-    pcp->driDrawablePriv = pdp;
-    pcp->driReadablePriv = prp;
-    if (pdp) {
-	pdp->driContextPriv = pcp;
-	dri_get_drawable(pdp);
-    }
-    if (prp && pdp != prp) {
-	dri_get_drawable(prp);
-    }
-
-    /*
-    ** Now that we have a context associated with this drawable, we can
-    ** initialize the drawable information if has not been done before.
-    */
-
-    if (!psp->dri2.enabled) {
-	if (pdp && !pdp->pStamp) {
-	    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
-	    __driUtilUpdateDrawableInfo(pdp);
-	    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
-	}
-	if (prp && pdp != prp && !prp->pStamp) {
-	    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
-	    __driUtilUpdateDrawableInfo(prp);
-	    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
-        }
-    }
-
-    /* Call device-specific MakeCurrent */
-    return (*psp->DriverAPI.MakeCurrent)(pcp, pdp, prp);
-}
-
-/*@}*/
-
-
-/*****************************************************************/
-/** \name Drawable handling functions                            */
-/*****************************************************************/
-/*@{*/
-
-/**
- * Update private drawable information.
- *
- * \param pdp pointer to the private drawable information to update.
- * 
- * This function basically updates the __DRIdrawable struct's
- * cliprect information by calling \c __DRIinterfaceMethods::getDrawableInfo.
- * This is usually called by the DRI_VALIDATE_DRAWABLE_INFO macro which
- * compares the __DRIdrwablePrivate pStamp and lastStamp values.  If
- * the values are different that means we have to update the clipping
- * info.
- */
-void
-__driUtilUpdateDrawableInfo(__DRIdrawable *pdp)
-{
-    __DRIscreen *psp = pdp->driScreenPriv;
-    __DRIcontext *pcp = pdp->driContextPriv;
-    
-    if (!pcp 
-	|| ((pdp != pcp->driDrawablePriv) && (pdp != pcp->driReadablePriv))) {
-	/* ERROR!!! 
-	 * ...but we must ignore it. There can be many contexts bound to a
-	 * drawable.
-	 */
-    }
-
-    if (pdp->pClipRects) {
-	free(pdp->pClipRects); 
-	pdp->pClipRects = NULL;
-    }
-
-    if (pdp->pBackClipRects) {
-	free(pdp->pBackClipRects); 
-	pdp->pBackClipRects = NULL;
-    }
-
-    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
-
-    if (! (*psp->getDrawableInfo->getDrawableInfo)(pdp,
-			  &pdp->index, &pdp->lastStamp,
-			  &pdp->x, &pdp->y, &pdp->w, &pdp->h,
-			  &pdp->numClipRects, &pdp->pClipRects,
-			  &pdp->backX,
-			  &pdp->backY,
-			  &pdp->numBackClipRects,
-			  &pdp->pBackClipRects,
-			  pdp->loaderPrivate)) {
-	/* Error -- eg the window may have been destroyed.  Keep going
-	 * with no cliprects.
-	 */
-        pdp->pStamp = &pdp->lastStamp; /* prevent endless loop */
-	pdp->numClipRects = 0;
-	pdp->pClipRects = NULL;
-	pdp->numBackClipRects = 0;
-	pdp->pBackClipRects = NULL;
-    }
-    else
-       pdp->pStamp = &(psp->pSAREA->drawableTable[pdp->index].stamp);
-
-    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);
-}
-
-/*@}*/
-
-/*****************************************************************/
-/** \name GLX callbacks                                          */
-/*****************************************************************/
-/*@{*/
-
-static void driReportDamage(__DRIdrawable *pdp,
-			    struct drm_clip_rect *pClipRects, int numClipRects)
-{
-    __DRIscreen *psp = pdp->driScreenPriv;
-
-    /* Check that we actually have the new damage report method */
-    if (psp->damage) {
-	/* Report the damage.  Currently, all our drivers draw
-	 * directly to the front buffer, so we report the damage there
-	 * rather than to the backing storein (if any).
-	 */
-	(*psp->damage->reportDamage)(pdp,
-				     pdp->x, pdp->y,
-				     pClipRects, numClipRects,
-				     GL_TRUE, pdp->loaderPrivate);
-    }
-}
-
-
-/**
- * Swap buffers.
- *
- * \param drawablePrivate opaque pointer to the per-drawable private info.
- * 
- * \internal
- * This function calls __DRIdrawable::swapBuffers.
- * 
- * Is called directly from glXSwapBuffers().
- */
-static void driSwapBuffers(__DRIdrawable *dPriv)
-{
-    __DRIscreen *psp = dPriv->driScreenPriv;
-    drm_clip_rect_t *rects;
-    int i;
-
-    psp->DriverAPI.SwapBuffers(dPriv);
-
-    if (!dPriv->numClipRects)
-        return;
-
-    rects = malloc(sizeof(*rects) * dPriv->numClipRects);
-
-    if (!rects)
-        return;
-
-    for (i = 0; i < dPriv->numClipRects; i++) {
-        rects[i].x1 = dPriv->pClipRects[i].x1 - dPriv->x;
-        rects[i].y1 = dPriv->pClipRects[i].y1 - dPriv->y;
-        rects[i].x2 = dPriv->pClipRects[i].x2 - dPriv->x;
-        rects[i].y2 = dPriv->pClipRects[i].y2 - dPriv->y;
-    }
-
-    driReportDamage(dPriv, rects, dPriv->numClipRects);
-    free(rects);
-}
-
-static int driDrawableGetMSC( __DRIscreen *sPriv, __DRIdrawable *dPriv,
-			      int64_t *msc )
-{
-    return sPriv->DriverAPI.GetDrawableMSC(sPriv, dPriv, msc);
-}
-
-
-static int driWaitForMSC(__DRIdrawable *dPriv, int64_t target_msc,
-			 int64_t divisor, int64_t remainder,
-			 int64_t * msc, int64_t * sbc)
-{
-    __DRIswapInfo  sInfo;
-    int  status;
-
-    status = dPriv->driScreenPriv->DriverAPI.WaitForMSC( dPriv, target_msc,
-                                                         divisor, remainder,
-                                                         msc );
-
-    /* GetSwapInfo() may not be provided by the driver if GLX_SGI_video_sync
-     * is supported but GLX_OML_sync_control is not.  Therefore, don't return
-     * an error value if GetSwapInfo() is not implemented.
-    */
-    if ( status == 0
-         && dPriv->driScreenPriv->DriverAPI.GetSwapInfo ) {
-        status = dPriv->driScreenPriv->DriverAPI.GetSwapInfo( dPriv, & sInfo );
-        *sbc = sInfo.swap_count;
-    }
-
-    return status;
-}
-
-
-const __DRImediaStreamCounterExtension driMediaStreamCounterExtension = {
-    { __DRI_MEDIA_STREAM_COUNTER, __DRI_MEDIA_STREAM_COUNTER_VERSION },
-    driWaitForMSC,
-    driDrawableGetMSC,
-};
-
-
-static void driCopySubBuffer(__DRIdrawable *dPriv,
-			      int x, int y, int w, int h)
-{
-    drm_clip_rect_t rect;
-
-    rect.x1 = x;
-    rect.y1 = dPriv->h - y - h;
-    rect.x2 = x + w;
-    rect.y2 = rect.y1 + h;
-    driReportDamage(dPriv, &rect, 1);
-
-    dPriv->driScreenPriv->DriverAPI.CopySubBuffer(dPriv, x, y, w, h);
-}
-
-const __DRIcopySubBufferExtension driCopySubBufferExtension = {
-    { __DRI_COPY_SUB_BUFFER, __DRI_COPY_SUB_BUFFER_VERSION },
-    driCopySubBuffer
-};
-
-static void driSetSwapInterval(__DRIdrawable *dPriv, unsigned int interval)
-{
-    dPriv->swap_interval = interval;
-}
-
-static unsigned int driGetSwapInterval(__DRIdrawable *dPriv)
-{
-    return dPriv->swap_interval;
-}
-
-const __DRIswapControlExtension driSwapControlExtension = {
-    { __DRI_SWAP_CONTROL, __DRI_SWAP_CONTROL_VERSION },
-    driSetSwapInterval,
-    driGetSwapInterval
-};
-
-
-/**
- * This is called via __DRIscreenRec's createNewDrawable pointer.
- */
-static __DRIdrawable *
-driCreateNewDrawable(__DRIscreen *psp, const __DRIconfig *config,
-		     drm_drawable_t hwDrawable, int renderType,
-		     const int *attrs, void *data)
-{
-    __DRIdrawable *pdp;
-
-    /* Since pbuffers are not yet supported, no drawable attributes are
-     * supported either.
-     */
-    (void) attrs;
-
-    pdp = malloc(sizeof *pdp);
-    if (!pdp) {
-	return NULL;
-    }
-
-    pdp->driContextPriv = NULL;
-    pdp->loaderPrivate = data;
-    pdp->hHWDrawable = hwDrawable;
-    pdp->refcount = 1;
-    pdp->pStamp = NULL;
-    pdp->lastStamp = 0;
-    pdp->index = 0;
-    pdp->x = 0;
-    pdp->y = 0;
-    pdp->w = 0;
-    pdp->h = 0;
-    pdp->numClipRects = 0;
-    pdp->numBackClipRects = 0;
-    pdp->pClipRects = NULL;
-    pdp->pBackClipRects = NULL;
-    pdp->vblSeq = 0;
-    pdp->vblFlags = 0;
-
-    pdp->driScreenPriv = psp;
-
-    if (!(*psp->DriverAPI.CreateBuffer)(psp, pdp, &config->modes, 0)) {
-       free(pdp);
-       return NULL;
-    }
-
-    pdp->msc_base = 0;
-
-    /* This special default value is replaced with the configured
-     * default value when the drawable is first bound to a direct
-     * rendering context. 
-     */
-    pdp->swap_interval = (unsigned)-1;
-
-    return pdp;
-}
-
-
-static __DRIdrawable *
-dri2CreateNewDrawable(__DRIscreen *screen,
-		      const __DRIconfig *config,
-		      void *loaderPrivate)
-{
-    __DRIdrawable *pdraw;
-
-    pdraw = driCreateNewDrawable(screen, config, 0, 0, NULL, loaderPrivate);
-    if (!pdraw)
-    	return NULL;
-
-    pdraw->pClipRects = &pdraw->dri2.clipRect;
-    pdraw->pBackClipRects = &pdraw->dri2.clipRect;
-
-    pdraw->pStamp = &pdraw->dri2.stamp;
-    *pdraw->pStamp = pdraw->lastStamp + 1;
-
-    return pdraw;
-}
-
-static __DRIbuffer *
-dri2AllocateBuffer(__DRIscreen *screen,
-		   unsigned int attachment, unsigned int format,
-		   int width, int height)
-{
-    return (*screen->DriverAPI.AllocateBuffer)(screen, attachment, format,
-					       width, height);
-}
-
-static void
-dri2ReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)
-{
-   (*screen->DriverAPI.ReleaseBuffer)(screen, buffer);
-}
-
-
-static int
-dri2ConfigQueryb(__DRIscreen *screen, const char *var, GLboolean *val)
-{
-   if (!driCheckOption(&screen->optionCache, var, DRI_BOOL))
-      return -1;
-
-   *val = driQueryOptionb(&screen->optionCache, var);
-
-   return 0;
-}
-
-static int
-dri2ConfigQueryi(__DRIscreen *screen, const char *var, GLint *val)
-{
-   if (!driCheckOption(&screen->optionCache, var, DRI_INT) &&
-       !driCheckOption(&screen->optionCache, var, DRI_ENUM))
-      return -1;
-
-    *val = driQueryOptioni(&screen->optionCache, var);
-
-    return 0;
-}
-
-static int
-dri2ConfigQueryf(__DRIscreen *screen, const char *var, GLfloat *val)
-{
-   if (!driCheckOption(&screen->optionCache, var, DRI_FLOAT))
-      return -1;
-
-    *val = driQueryOptionf(&screen->optionCache, var);
-
-    return 0;
-}
-
-
-static void dri_get_drawable(__DRIdrawable *pdp)
-{
-    pdp->refcount++;
-}
-	
-static void dri_put_drawable(__DRIdrawable *pdp)
-{
-    __DRIscreen *psp;
-
-    if (pdp) {
-	pdp->refcount--;
-	if (pdp->refcount)
-	    return;
-
-	psp = pdp->driScreenPriv;
-        (*psp->DriverAPI.DestroyBuffer)(pdp);
-	if (pdp->pClipRects && pdp->pClipRects != &pdp->dri2.clipRect) {
-	    free(pdp->pClipRects);
-	    pdp->pClipRects = NULL;
-	}
-	if (pdp->pBackClipRects && pdp->pClipRects != &pdp->dri2.clipRect) {
-	    free(pdp->pBackClipRects);
-	    pdp->pBackClipRects = NULL;
-	}
-	free(pdp);
-    }
-}
-
-static void
-driDestroyDrawable(__DRIdrawable *pdp)
-{
-    dri_put_drawable(pdp);
-}
-
-/*@}*/
-
-
-/*****************************************************************/
-/** \name Context handling functions                             */
-/*****************************************************************/
-/*@{*/
-
-/**
- * Destroy the per-context private information.
- * 
- * \internal
- * This function calls __DriverAPIRec::DestroyContext on \p contextPrivate, calls
- * drmDestroyContext(), and finally frees \p contextPrivate.
- */
-static void
-driDestroyContext(__DRIcontext *pcp)
-{
-    if (pcp) {
-	(*pcp->driScreenPriv->DriverAPI.DestroyContext)(pcp);
-	free(pcp);
-    }
-}
-
-
-/**
- * Create the per-drawable private driver information.
- * 
- * \param render_type   Type of rendering target.  \c GLX_RGBA is the only
- *                      type likely to ever be supported for direct-rendering.
- * \param shared        Context with which to share textures, etc. or NULL
- *
- * \returns An opaque pointer to the per-context private information on
- *          success, or \c NULL on failure.
- * 
- * \internal
- * This function allocates and fills a __DRIcontextRec structure.  It
- * performs some device independent initialization and passes all the
- * relevent information to __DriverAPIRec::CreateContext to create the
- * context.
- *
- */
-static __DRIcontext *
-driCreateNewContext(__DRIscreen *psp, const __DRIconfig *config,
-		    int render_type, __DRIcontext *shared, 
-		    drm_context_t hwContext, void *data)
-{
-    __DRIcontext *pcp;
-    void * const shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;
-
-    pcp = malloc(sizeof *pcp);
-    if (!pcp)
-	return NULL;
-
-    pcp->driScreenPriv = psp;
-    pcp->driDrawablePriv = NULL;
-    pcp->loaderPrivate = data;
-    
-    pcp->dri2.draw_stamp = 0;
-    pcp->dri2.read_stamp = 0;
-
-    pcp->hHWContext = hwContext;
-
-    if ( !(*psp->DriverAPI.CreateContext)(API_OPENGL,
-					  &config->modes, pcp, shareCtx) ) {
-        free(pcp);
-        return NULL;
-    }
-
-    return pcp;
-}
-
-static unsigned int
-dri2GetAPIMask(__DRIscreen *screen)
-{
-    return screen->api_mask;
-}
-
-static __DRIcontext *
-dri2CreateNewContextForAPI(__DRIscreen *screen, int api,
-			   const __DRIconfig *config,
-			   __DRIcontext *shared, void *data)
-{
-    __DRIcontext *context;
-    const struct gl_config *modes = (config != NULL) ? &config->modes : NULL;
-    void *shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;
-    gl_api mesa_api;
-
-    if (!(screen->api_mask & (1 << api)))
-	return NULL;
-
-    switch (api) {
-    case __DRI_API_OPENGL:
-	    mesa_api = API_OPENGL;
-	    break;
-    case __DRI_API_GLES:
-	    mesa_api = API_OPENGLES;
-	    break;
-    case __DRI_API_GLES2:
-	    mesa_api = API_OPENGLES2;
-	    break;
-    default:
-	    return NULL;
-    }
-
-    context = malloc(sizeof *context);
-    if (!context)
-	return NULL;
-
-    context->driScreenPriv = screen;
-    context->driDrawablePriv = NULL;
-    context->loaderPrivate = data;
-    
-    if (!(*screen->DriverAPI.CreateContext)(mesa_api, modes,
-					    context, shareCtx) ) {
-        free(context);
-        return NULL;
-    }
-
-    return context;
-}
-
-
-static __DRIcontext *
-dri2CreateNewContext(__DRIscreen *screen, const __DRIconfig *config,
-		      __DRIcontext *shared, void *data)
-{
-   return dri2CreateNewContextForAPI(screen, __DRI_API_OPENGL,
-				     config, shared, data);
-}
-
-static int
-driCopyContext(__DRIcontext *dest, __DRIcontext *src, unsigned long mask)
-{
-    return GL_FALSE;
-}
-
-/*@}*/
-
-
-/*****************************************************************/
-/** \name Screen handling functions                              */
-/*****************************************************************/
-/*@{*/
-
-/**
- * Destroy the per-screen private information.
- * 
- * \internal
- * This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls
- * drmClose(), and finally frees \p screenPrivate.
- */
-static void driDestroyScreen(__DRIscreen *psp)
-{
-    if (psp) {
-	/* No interaction with the X-server is possible at this point.  This
-	 * routine is called after XCloseDisplay, so there is no protocol
-	 * stream open to the X-server anymore.
-	 */
-
-       _mesa_destroy_shader_compiler();
-
-	if (psp->DriverAPI.DestroyScreen)
-	    (*psp->DriverAPI.DestroyScreen)(psp);
-
-	if (!psp->dri2.enabled) {
-	   (void)drmUnmap((drmAddress)psp->pSAREA, SAREA_MAX);
-	   (void)drmUnmap((drmAddress)psp->pFB, psp->fbSize);
-	   (void)drmCloseOnce(psp->fd);
-	} else {
-	   driDestroyOptionCache(&psp->optionCache);
-	   driDestroyOptionInfo(&psp->optionInfo);
-	}
-
-	free(psp);
-    }
-}
-
-static void
-setupLoaderExtensions(__DRIscreen *psp,
-		      const __DRIextension **extensions)
-{
-    int i;
-
-    for (i = 0; extensions[i]; i++) {
-	if (strcmp(extensions[i]->name, __DRI_GET_DRAWABLE_INFO) == 0)
-	    psp->getDrawableInfo = (__DRIgetDrawableInfoExtension *) extensions[i];
-	if (strcmp(extensions[i]->name, __DRI_DAMAGE) == 0)
-	    psp->damage = (__DRIdamageExtension *) extensions[i];
-	if (strcmp(extensions[i]->name, __DRI_SYSTEM_TIME) == 0)
-	    psp->systemTime = (__DRIsystemTimeExtension *) extensions[i];
-	if (strcmp(extensions[i]->name, __DRI_DRI2_LOADER) == 0)
-	    psp->dri2.loader = (__DRIdri2LoaderExtension *) extensions[i];
-	if (strcmp(extensions[i]->name, __DRI_IMAGE_LOOKUP) == 0)
-	    psp->dri2.image = (__DRIimageLookupExtension *) extensions[i];
-	if (strcmp(extensions[i]->name, __DRI_USE_INVALIDATE) == 0)
-	    psp->dri2.useInvalidate = (__DRIuseInvalidateExtension *) extensions[i];
-    }
-}
-
-/**
- * This is the bootstrap function for the driver.  libGL supplies all of the
- * requisite information about the system, and the driver initializes itself.
- * This routine also fills in the linked list pointed to by \c driver_modes
- * with the \c struct gl_config that the driver can support for windows or
- * pbuffers.
- *
- * For legacy DRI.
- * 
- * \param scrn  Index of the screen
- * \param ddx_version Version of the 2D DDX.  This may not be meaningful for
- *                    all drivers.
- * \param dri_version Version of the "server-side" DRI.
- * \param drm_version Version of the kernel DRM.
- * \param frame_buffer Data describing the location and layout of the
- *                     framebuffer.
- * \param pSAREA       Pointer to the SAREA.
- * \param fd           Device handle for the DRM.
- * \param extensions   ??
- * \param driver_modes  Returns modes suppoted by the driver
- * \param loaderPrivate  ??
- * 
- * \note There is no need to check the minimum API version in this
- * function.  Since the name of this function is versioned, it is
- * impossible for a loader that is too old to even load this driver.
- */
-static __DRIscreen *
-driCreateNewScreen(int scrn,
-		   const __DRIversion *ddx_version,
-		   const __DRIversion *dri_version,
-		   const __DRIversion *drm_version,
-		   const __DRIframebuffer *frame_buffer,
-		   drmAddress pSAREA, int fd, 
-		   const __DRIextension **extensions,
-		   const __DRIconfig ***driver_modes,
-		   void *loaderPrivate)
-{
-    static const __DRIextension *emptyExtensionList[] = { NULL };
-    __DRIscreen *psp;
-
-    if (driDriverAPI.InitScreen == NULL)
-	return NULL;
-
-    psp = calloc(1, sizeof *psp);
-    if (!psp)
-	return NULL;
-
-    setupLoaderExtensions(psp, extensions);
-
-    /*
-    ** NOT_DONE: This is used by the X server to detect when the client
-    ** has died while holding the drawable lock.  The client sets the
-    ** drawable lock to this value.
-    */
-    psp->drawLockID = 1;
-
-    psp->drm_version = *drm_version;
-    psp->ddx_version = *ddx_version;
-    psp->dri_version = *dri_version;
-
-    psp->pSAREA = pSAREA;
-    psp->lock = (drmLock *) &psp->pSAREA->lock;
-
-    psp->pFB = frame_buffer->base;
-    psp->fbSize = frame_buffer->size;
-    psp->fbStride = frame_buffer->stride;
-    psp->fbWidth = frame_buffer->width;
-    psp->fbHeight = frame_buffer->height;
-    psp->devPrivSize = frame_buffer->dev_priv_size;
-    psp->pDevPriv = frame_buffer->dev_priv;
-    psp->fbBPP = psp->fbStride * 8 / frame_buffer->width;
-
-    psp->extensions = emptyExtensionList;
-    psp->fd = fd;
-    psp->myNum = scrn;
-    psp->dri2.enabled = GL_FALSE;
-
-    psp->DriverAPI = driDriverAPI;
-    psp->api_mask = (1 << __DRI_API_OPENGL);
-
-    *driver_modes = driDriverAPI.InitScreen(psp);
-    if (*driver_modes == NULL) {
-	free(psp);
-	return NULL;
-    }
-
-    return psp;
-}
-
-/**
- * DRI2
- */
-static __DRIscreen *
-dri2CreateNewScreen(int scrn, int fd,
-		    const __DRIextension **extensions,
-		    const __DRIconfig ***driver_configs, void *data)
-{
-    static const __DRIextension *emptyExtensionList[] = { NULL };
-    __DRIscreen *psp;
-    drmVersionPtr version;
-
-    if (driDriverAPI.InitScreen2 == NULL)
-        return NULL;
-
-    psp = calloc(1, sizeof(*psp));
-    if (!psp)
-	return NULL;
-
-    setupLoaderExtensions(psp, extensions);
-
-    version = drmGetVersion(fd);
-    if (version) {
-	psp->drm_version.major = version->version_major;
-	psp->drm_version.minor = version->version_minor;
-	psp->drm_version.patch = version->version_patchlevel;
-	drmFreeVersion(version);
-    }
-
-    psp->extensions = emptyExtensionList;
-    psp->fd = fd;
-    psp->myNum = scrn;
-    psp->dri2.enabled = GL_TRUE;
-
-    psp->DriverAPI = driDriverAPI;
-    psp->api_mask = (1 << __DRI_API_OPENGL);
-    *driver_configs = driDriverAPI.InitScreen2(psp);
-    if (*driver_configs == NULL) {
-	free(psp);
-	return NULL;
-    }
-
-    psp->DriverAPI = driDriverAPI;
-    psp->loaderPrivate = data;
-
-    driParseOptionInfo(&psp->optionInfo, __dri2ConfigOptions,
-		       __dri2NConfigOptions);
-    driParseConfigFiles(&psp->optionCache, &psp->optionInfo, psp->myNum,
-			"dri2");
-
-    return psp;
-}
-
-static const __DRIextension **driGetExtensions(__DRIscreen *psp)
-{
-    return psp->extensions;
-}
-
-/** Core interface */
-const __DRIcoreExtension driCoreExtension = {
-    { __DRI_CORE, __DRI_CORE_VERSION },
-    NULL,
-    driDestroyScreen,
-    driGetExtensions,
-    driGetConfigAttrib,
-    driIndexConfigAttrib,
-    NULL,
-    driDestroyDrawable,
-    driSwapBuffers,
-    NULL,
-    driCopyContext,
-    driDestroyContext,
-    driBindContext,
-    driUnbindContext
-};
-
-/** Legacy DRI interface */
-const __DRIlegacyExtension driLegacyExtension = {
-    { __DRI_LEGACY, __DRI_LEGACY_VERSION },
-    driCreateNewScreen,
-    driCreateNewDrawable,
-    driCreateNewContext,
-};
-
-/** DRI2 interface */
-const __DRIdri2Extension driDRI2Extension = {
-    { __DRI_DRI2, __DRI_DRI2_VERSION },
-    dri2CreateNewScreen,
-    dri2CreateNewDrawable,
-    dri2CreateNewContext,
-    dri2GetAPIMask,
-    dri2CreateNewContextForAPI,
-    dri2AllocateBuffer,
-    dri2ReleaseBuffer
-};
-
-const __DRI2configQueryExtension dri2ConfigQueryExtension = {
-   { __DRI2_CONFIG_QUERY, __DRI2_CONFIG_QUERY_VERSION },
-   dri2ConfigQueryb,
-   dri2ConfigQueryi,
-   dri2ConfigQueryf,
-};
-
-/**
- * Calculate amount of swap interval used between GLX buffer swaps.
- * 
- * The usage value, on the range [0,max], is the fraction of total swap
- * interval time used between GLX buffer swaps is calculated.
- *
- *            \f$p = t_d / (i * t_r)\f$
- * 
- * Where \f$t_d\f$ is the time since the last GLX buffer swap, \f$i\f$ is the
- * swap interval (as set by \c glXSwapIntervalSGI), and \f$t_r\f$ time
- * required for a single vertical refresh period (as returned by \c
- * glXGetMscRateOML).
- * 
- * See the documentation for the GLX_MESA_swap_frame_usage extension for more
- * details.
- *
- * \param   dPriv  Pointer to the private drawable structure.
- * \return  If less than a single swap interval time period was required
- *          between GLX buffer swaps, a number greater than 0 and less than
- *          1.0 is returned.  If exactly one swap interval time period is
- *          required, 1.0 is returned, and if more than one is required then
- *          a number greater than 1.0 will be returned.
- *
- * \sa glXSwapIntervalSGI glXGetMscRateOML
- * 
- * \todo Instead of caching the \c glXGetMscRateOML function pointer, would it
- *       be possible to cache the sync rate?
- */
-float
-driCalculateSwapUsage( __DRIdrawable *dPriv, int64_t last_swap_ust,
-		       int64_t current_ust )
-{
-   int32_t   n;
-   int32_t   d;
-   int       interval;
-   float     usage = 1.0;
-   __DRIscreen *psp = dPriv->driScreenPriv;
-
-   if ( (*psp->systemTime->getMSCRate)(dPriv, &n, &d, dPriv->loaderPrivate) ) {
-      interval = (dPriv->swap_interval != 0) ? dPriv->swap_interval : 1;
-
-
-      /* We want to calculate
-       * (current_UST - last_swap_UST) / (interval * us_per_refresh).  We get
-       * current_UST by calling __glXGetUST.  last_swap_UST is stored in
-       * dPriv->swap_ust.  interval has already been calculated.
-       *
-       * The only tricky part is us_per_refresh.  us_per_refresh is
-       * 1000000 / MSC_rate.  We know the MSC_rate is n / d.  We can flip it
-       * around and say us_per_refresh = 1000000 * d / n.  Since this goes in
-       * the denominator of the final calculation, we calculate
-       * (interval * 1000000 * d) and move n into the numerator.
-       */
-
-      usage = (current_ust - last_swap_ust);
-      usage *= n;
-      usage /= (interval * d);
-      usage /= 1000000.0;
-   }
-   
-   return usage;
-}
-
-void
-dri2InvalidateDrawable(__DRIdrawable *drawable)
-{
-    drawable->dri2.stamp++;
-}
-
-/*@}*/
+/**

+ * \file dri_util.c

+ * DRI utility functions.

+ *

+ * This module acts as glue between GLX and the actual hardware driver.  A DRI

+ * driver doesn't really \e have to use any of this - it's optional.  But, some

+ * useful stuff is done here that otherwise would have to be duplicated in most

+ * drivers.

+ * 

+ * Basically, these utility functions take care of some of the dirty details of

+ * screen initialization, context creation, context binding, DRM setup, etc.

+ *

+ * These functions are compiled into each DRI driver so libGL.so knows nothing

+ * about them.

+ */

+

+

+#include <assert.h>

+#include <stdarg.h>

+#include <unistd.h>

+#include <sys/mman.h>

+#include <stdio.h>

+

+#ifndef MAP_FAILED

+#define MAP_FAILED ((void *)-1)

+#endif

+

+#include "main/imports.h"

+#define None 0

+

+#include "dri_util.h"

+#include "drm_sarea.h"

+#include "utils.h"

+#include "xmlpool.h"

+#include "../glsl/glsl_parser_extras.h"

+

+PUBLIC const char __dri2ConfigOptions[] =

+   DRI_CONF_BEGIN

+      DRI_CONF_SECTION_PERFORMANCE

+         DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_1)

+      DRI_CONF_SECTION_END

+   DRI_CONF_END;

+

+static const uint __dri2NConfigOptions = 1;

+

+#ifndef GLX_OML_sync_control

+typedef GLboolean ( * PFNGLXGETMSCRATEOMLPROC) (__DRIdrawable *drawable, int32_t *numerator, int32_t *denominator);

+#endif

+

+static void dri_get_drawable(__DRIdrawable *pdp);

+static void dri_put_drawable(__DRIdrawable *pdp);

+

+/**

+ * This is just a token extension used to signal that the driver

+ * supports setting a read drawable.

+ */

+const __DRIextension driReadDrawableExtension = {

+    __DRI_READ_DRAWABLE, __DRI_READ_DRAWABLE_VERSION

+};

+

+GLint

+driIntersectArea( drm_clip_rect_t rect1, drm_clip_rect_t rect2 )

+{

+   if (rect2.x1 > rect1.x1) rect1.x1 = rect2.x1;

+   if (rect2.x2 < rect1.x2) rect1.x2 = rect2.x2;

+   if (rect2.y1 > rect1.y1) rect1.y1 = rect2.y1;

+   if (rect2.y2 < rect1.y2) rect1.y2 = rect2.y2;

+

+   if (rect1.x1 > rect1.x2 || rect1.y1 > rect1.y2) return 0;

+

+   return (rect1.x2 - rect1.x1) * (rect1.y2 - rect1.y1);

+}

+

+/*****************************************************************/

+/** \name Context (un)binding functions                          */

+/*****************************************************************/

+/*@{*/

+

+/**

+ * Unbind context.

+ * 

+ * \param scrn the screen.

+ * \param gc context.

+ *

+ * \return \c GL_TRUE on success, or \c GL_FALSE on failure.

+ * 

+ * \internal

+ * This function calls __DriverAPIRec::UnbindContext, and then decrements

+ * __DRIdrawableRec::refcount which must be non-zero for a successful

+ * return.

+ * 

+ * While casting the opaque private pointers associated with the parameters

+ * into their respective real types it also assures they are not \c NULL. 

+ */

+static int driUnbindContext(__DRIcontext *pcp)

+{

+    __DRIscreen *psp;

+    __DRIdrawable *pdp;

+    __DRIdrawable *prp;

+

+    /*

+    ** Assume error checking is done properly in glXMakeCurrent before

+    ** calling driUnbindContext.

+    */

+

+    if (pcp == NULL)

+        return GL_FALSE;

+

+    psp = pcp->driScreenPriv;

+    pdp = pcp->driDrawablePriv;

+    prp = pcp->driReadablePriv;

+

+    /* already unbound */

+    if (!pdp && !prp)

+      return GL_TRUE;

+    /* Let driver unbind drawable from context */

+    (*psp->DriverAPI.UnbindContext)(pcp);

+

+    assert(pdp);

+    if (pdp->refcount == 0) {

+	/* ERROR!!! */

+	return GL_FALSE;

+    }

+

+    dri_put_drawable(pdp);

+

+    if (prp != pdp) {

+        if (prp->refcount == 0) {

+	    /* ERROR!!! */

+	    return GL_FALSE;

+	}

+

+    	dri_put_drawable(prp);

+    }

+

+

+    /* XXX this is disabled so that if we call SwapBuffers on an unbound

+     * window we can determine the last context bound to the window and

+     * use that context's lock. (BrianP, 2-Dec-2000)

+     */

+    pcp->driDrawablePriv = pcp->driReadablePriv = NULL;

+

+    return GL_TRUE;

+}

+

+/**

+ * This function takes both a read buffer and a draw buffer.  This is needed

+ * for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent

+ * function.

+ */

+static int driBindContext(__DRIcontext *pcp,

+			  __DRIdrawable *pdp,

+			  __DRIdrawable *prp)

+{

+    __DRIscreen *psp = NULL;

+

+    /*

+    ** Assume error checking is done properly in glXMakeCurrent before

+    ** calling driUnbindContext.

+    */

+

+    if (!pcp)

+	return GL_FALSE;

+

+    /* Bind the drawable to the context */

+    psp = pcp->driScreenPriv;

+    pcp->driDrawablePriv = pdp;

+    pcp->driReadablePriv = prp;

+    if (pdp) {

+	pdp->driContextPriv = pcp;

+	dri_get_drawable(pdp);

+    }

+    if (prp && pdp != prp) {

+	dri_get_drawable(prp);

+    }

+

+    /*

+    ** Now that we have a context associated with this drawable, we can

+    ** initialize the drawable information if has not been done before.

+    */

+

+    if (!psp->dri2.enabled) {

+	if (pdp && !pdp->pStamp) {

+	    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);

+	    __driUtilUpdateDrawableInfo(pdp);

+	    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);

+	}

+	if (prp && pdp != prp && !prp->pStamp) {

+	    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);

+	    __driUtilUpdateDrawableInfo(prp);

+	    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);

+        }

+    }

+

+    /* Call device-specific MakeCurrent */

+    return (*psp->DriverAPI.MakeCurrent)(pcp, pdp, prp);

+}

+

+/*@}*/

+

+

+/*****************************************************************/

+/** \name Drawable handling functions                            */

+/*****************************************************************/

+/*@{*/

+

+/**

+ * Update private drawable information.

+ *

+ * \param pdp pointer to the private drawable information to update.

+ * 

+ * This function basically updates the __DRIdrawable struct's

+ * cliprect information by calling \c __DRIinterfaceMethods::getDrawableInfo.

+ * This is usually called by the DRI_VALIDATE_DRAWABLE_INFO macro which

+ * compares the __DRIdrwablePrivate pStamp and lastStamp values.  If

+ * the values are different that means we have to update the clipping

+ * info.

+ */

+void

+__driUtilUpdateDrawableInfo(__DRIdrawable *pdp)

+{

+    __DRIscreen *psp = pdp->driScreenPriv;

+    __DRIcontext *pcp = pdp->driContextPriv;

+    

+    if (!pcp 

+	|| ((pdp != pcp->driDrawablePriv) && (pdp != pcp->driReadablePriv))) {

+	/* ERROR!!! 

+	 * ...but we must ignore it. There can be many contexts bound to a

+	 * drawable.

+	 */

+    }

+

+    if (pdp->pClipRects) {

+	free(pdp->pClipRects); 

+	pdp->pClipRects = NULL;

+    }

+

+    if (pdp->pBackClipRects) {

+	free(pdp->pBackClipRects); 

+	pdp->pBackClipRects = NULL;

+    }

+

+    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);

+

+    if (! (*psp->getDrawableInfo->getDrawableInfo)(pdp,

+			  &pdp->index, &pdp->lastStamp,

+			  &pdp->x, &pdp->y, &pdp->w, &pdp->h,

+			  &pdp->numClipRects, &pdp->pClipRects,

+			  &pdp->backX,

+			  &pdp->backY,

+			  &pdp->numBackClipRects,

+			  &pdp->pBackClipRects,

+			  pdp->loaderPrivate)) {

+	/* Error -- eg the window may have been destroyed.  Keep going

+	 * with no cliprects.

+	 */

+        pdp->pStamp = &pdp->lastStamp; /* prevent endless loop */

+	pdp->numClipRects = 0;

+	pdp->pClipRects = NULL;

+	pdp->numBackClipRects = 0;

+	pdp->pBackClipRects = NULL;

+    }

+    else

+       pdp->pStamp = &(psp->pSAREA->drawableTable[pdp->index].stamp);

+

+    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);

+}

+

+/*@}*/

+

+/*****************************************************************/

+/** \name GLX callbacks                                          */

+/*****************************************************************/

+/*@{*/

+

+static void driReportDamage(__DRIdrawable *pdp,

+			    struct drm_clip_rect *pClipRects, int numClipRects)

+{

+    __DRIscreen *psp = pdp->driScreenPriv;

+

+    /* Check that we actually have the new damage report method */

+    if (psp->damage) {

+	/* Report the damage.  Currently, all our drivers draw

+	 * directly to the front buffer, so we report the damage there

+	 * rather than to the backing storein (if any).

+	 */

+	(*psp->damage->reportDamage)(pdp,

+				     pdp->x, pdp->y,

+				     pClipRects, numClipRects,

+				     GL_TRUE, pdp->loaderPrivate);

+    }

+}

+

+

+/**

+ * Swap buffers.

+ *

+ * \param drawablePrivate opaque pointer to the per-drawable private info.

+ * 

+ * \internal

+ * This function calls __DRIdrawable::swapBuffers.

+ * 

+ * Is called directly from glXSwapBuffers().

+ */

+static void driSwapBuffers(__DRIdrawable *dPriv)

+{

+    __DRIscreen *psp = dPriv->driScreenPriv;

+    drm_clip_rect_t *rects;

+    int i;

+

+    psp->DriverAPI.SwapBuffers(dPriv);

+

+    if (!dPriv->numClipRects)

+        return;

+

+    rects = malloc(sizeof(*rects) * dPriv->numClipRects);

+

+    if (!rects)

+        return;

+

+    for (i = 0; i < dPriv->numClipRects; i++) {

+        rects[i].x1 = dPriv->pClipRects[i].x1 - dPriv->x;

+        rects[i].y1 = dPriv->pClipRects[i].y1 - dPriv->y;

+        rects[i].x2 = dPriv->pClipRects[i].x2 - dPriv->x;

+        rects[i].y2 = dPriv->pClipRects[i].y2 - dPriv->y;

+    }

+

+    driReportDamage(dPriv, rects, dPriv->numClipRects);

+    free(rects);

+}

+

+static int driDrawableGetMSC( __DRIscreen *sPriv, __DRIdrawable *dPriv,

+			      int64_t *msc )

+{

+    return sPriv->DriverAPI.GetDrawableMSC(sPriv, dPriv, msc);

+}

+

+

+static int driWaitForMSC(__DRIdrawable *dPriv, int64_t target_msc,

+			 int64_t divisor, int64_t remainder,

+			 int64_t * msc, int64_t * sbc)

+{

+    __DRIswapInfo  sInfo;

+    int  status;

+

+    status = dPriv->driScreenPriv->DriverAPI.WaitForMSC( dPriv, target_msc,

+                                                         divisor, remainder,

+                                                         msc );

+

+    /* GetSwapInfo() may not be provided by the driver if GLX_SGI_video_sync

+     * is supported but GLX_OML_sync_control is not.  Therefore, don't return

+     * an error value if GetSwapInfo() is not implemented.

+    */

+    if ( status == 0

+         && dPriv->driScreenPriv->DriverAPI.GetSwapInfo ) {

+        status = dPriv->driScreenPriv->DriverAPI.GetSwapInfo( dPriv, & sInfo );

+        *sbc = sInfo.swap_count;

+    }

+

+    return status;

+}

+

+

+const __DRImediaStreamCounterExtension driMediaStreamCounterExtension = {

+    { __DRI_MEDIA_STREAM_COUNTER, __DRI_MEDIA_STREAM_COUNTER_VERSION },

+    driWaitForMSC,

+    driDrawableGetMSC,

+};

+

+

+static void driCopySubBuffer(__DRIdrawable *dPriv,

+			      int x, int y, int w, int h)

+{

+    drm_clip_rect_t rect;

+

+    rect.x1 = x;

+    rect.y1 = dPriv->h - y - h;

+    rect.x2 = x + w;

+    rect.y2 = rect.y1 + h;

+    driReportDamage(dPriv, &rect, 1);

+

+    dPriv->driScreenPriv->DriverAPI.CopySubBuffer(dPriv, x, y, w, h);

+}

+

+const __DRIcopySubBufferExtension driCopySubBufferExtension = {

+    { __DRI_COPY_SUB_BUFFER, __DRI_COPY_SUB_BUFFER_VERSION },

+    driCopySubBuffer

+};

+

+static void driSetSwapInterval(__DRIdrawable *dPriv, unsigned int interval)

+{

+    dPriv->swap_interval = interval;

+}

+

+static unsigned int driGetSwapInterval(__DRIdrawable *dPriv)

+{

+    return dPriv->swap_interval;

+}

+

+const __DRIswapControlExtension driSwapControlExtension = {

+    { __DRI_SWAP_CONTROL, __DRI_SWAP_CONTROL_VERSION },

+    driSetSwapInterval,

+    driGetSwapInterval

+};

+

+

+/**

+ * This is called via __DRIscreenRec's createNewDrawable pointer.

+ */

+static __DRIdrawable *

+driCreateNewDrawable(__DRIscreen *psp, const __DRIconfig *config,

+		     drm_drawable_t hwDrawable, int renderType,

+		     const int *attrs, void *data)

+{

+    __DRIdrawable *pdp;

+

+    /* Since pbuffers are not yet supported, no drawable attributes are

+     * supported either.

+     */

+    (void) attrs;

+

+    pdp = malloc(sizeof *pdp);

+    if (!pdp) {

+	return NULL;

+    }

+

+    pdp->driContextPriv = NULL;

+    pdp->loaderPrivate = data;

+    pdp->hHWDrawable = hwDrawable;

+    pdp->refcount = 1;

+    pdp->pStamp = NULL;

+    pdp->lastStamp = 0;

+    pdp->index = 0;

+    pdp->x = 0;

+    pdp->y = 0;

+    pdp->w = 0;

+    pdp->h = 0;

+    pdp->numClipRects = 0;

+    pdp->numBackClipRects = 0;

+    pdp->pClipRects = NULL;

+    pdp->pBackClipRects = NULL;

+    pdp->vblSeq = 0;

+    pdp->vblFlags = 0;

+

+    pdp->driScreenPriv = psp;

+

+    if (!(*psp->DriverAPI.CreateBuffer)(psp, pdp, &config->modes, 0)) {

+       free(pdp);

+       return NULL;

+    }

+

+    pdp->msc_base = 0;

+

+    /* This special default value is replaced with the configured

+     * default value when the drawable is first bound to a direct

+     * rendering context. 

+     */

+    pdp->swap_interval = (unsigned)-1;

+

+    return pdp;

+}

+

+

+static __DRIdrawable *

+dri2CreateNewDrawable(__DRIscreen *screen,

+		      const __DRIconfig *config,

+		      void *loaderPrivate)

+{

+    __DRIdrawable *pdraw;

+

+    pdraw = driCreateNewDrawable(screen, config, 0, 0, NULL, loaderPrivate);

+    if (!pdraw)

+    	return NULL;

+

+    pdraw->pClipRects = &pdraw->dri2.clipRect;

+    pdraw->pBackClipRects = &pdraw->dri2.clipRect;

+

+    pdraw->pStamp = &pdraw->dri2.stamp;

+    *pdraw->pStamp = pdraw->lastStamp + 1;

+

+    return pdraw;

+}

+

+static __DRIbuffer *

+dri2AllocateBuffer(__DRIscreen *screen,

+		   unsigned int attachment, unsigned int format,

+		   int width, int height)

+{

+    return (*screen->DriverAPI.AllocateBuffer)(screen, attachment, format,

+					       width, height);

+}

+

+static void

+dri2ReleaseBuffer(__DRIscreen *screen, __DRIbuffer *buffer)

+{

+   (*screen->DriverAPI.ReleaseBuffer)(screen, buffer);

+}

+

+

+static int

+dri2ConfigQueryb(__DRIscreen *screen, const char *var, GLboolean *val)

+{

+   if (!driCheckOption(&screen->optionCache, var, DRI_BOOL))

+      return -1;

+

+   *val = driQueryOptionb(&screen->optionCache, var);

+

+   return 0;

+}

+

+static int

+dri2ConfigQueryi(__DRIscreen *screen, const char *var, GLint *val)

+{

+   if (!driCheckOption(&screen->optionCache, var, DRI_INT) &&

+       !driCheckOption(&screen->optionCache, var, DRI_ENUM))

+      return -1;

+

+    *val = driQueryOptioni(&screen->optionCache, var);

+

+    return 0;

+}

+

+static int

+dri2ConfigQueryf(__DRIscreen *screen, const char *var, GLfloat *val)

+{

+   if (!driCheckOption(&screen->optionCache, var, DRI_FLOAT))

+      return -1;

+

+    *val = driQueryOptionf(&screen->optionCache, var);

+

+    return 0;

+}

+

+

+static void dri_get_drawable(__DRIdrawable *pdp)

+{

+    pdp->refcount++;

+}

+	

+static void dri_put_drawable(__DRIdrawable *pdp)

+{

+    __DRIscreen *psp;

+

+    if (pdp) {

+	pdp->refcount--;

+	if (pdp->refcount)

+	    return;

+

+	psp = pdp->driScreenPriv;

+        (*psp->DriverAPI.DestroyBuffer)(pdp);

+	if (pdp->pClipRects && pdp->pClipRects != &pdp->dri2.clipRect) {

+	    free(pdp->pClipRects);

+	    pdp->pClipRects = NULL;

+	}

+	if (pdp->pBackClipRects && pdp->pClipRects != &pdp->dri2.clipRect) {

+	    free(pdp->pBackClipRects);

+	    pdp->pBackClipRects = NULL;

+	}

+	free(pdp);

+    }

+}

+

+static void

+driDestroyDrawable(__DRIdrawable *pdp)

+{

+    dri_put_drawable(pdp);

+}

+

+/*@}*/

+

+

+/*****************************************************************/

+/** \name Context handling functions                             */

+/*****************************************************************/

+/*@{*/

+

+/**

+ * Destroy the per-context private information.

+ * 

+ * \internal

+ * This function calls __DriverAPIRec::DestroyContext on \p contextPrivate, calls

+ * drmDestroyContext(), and finally frees \p contextPrivate.

+ */

+static void

+driDestroyContext(__DRIcontext *pcp)

+{

+    if (pcp) {

+	(*pcp->driScreenPriv->DriverAPI.DestroyContext)(pcp);

+	free(pcp);

+    }

+}

+

+

+/**

+ * Create the per-drawable private driver information.

+ * 

+ * \param render_type   Type of rendering target.  \c GLX_RGBA is the only

+ *                      type likely to ever be supported for direct-rendering.

+ * \param shared        Context with which to share textures, etc. or NULL

+ *

+ * \returns An opaque pointer to the per-context private information on

+ *          success, or \c NULL on failure.

+ * 

+ * \internal

+ * This function allocates and fills a __DRIcontextRec structure.  It

+ * performs some device independent initialization and passes all the

+ * relevent information to __DriverAPIRec::CreateContext to create the

+ * context.

+ *

+ */

+static __DRIcontext *

+driCreateNewContext(__DRIscreen *psp, const __DRIconfig *config,

+		    int render_type, __DRIcontext *shared, 

+		    drm_context_t hwContext, void *data)

+{

+    __DRIcontext *pcp;

+    void * const shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;

+

+    pcp = malloc(sizeof *pcp);

+    if (!pcp)

+	return NULL;

+

+    pcp->driScreenPriv = psp;

+    pcp->driDrawablePriv = NULL;

+    pcp->loaderPrivate = data;

+    

+    pcp->dri2.draw_stamp = 0;

+    pcp->dri2.read_stamp = 0;

+

+    pcp->hHWContext = hwContext;

+

+    if ( !(*psp->DriverAPI.CreateContext)(API_OPENGL,

+					  &config->modes, pcp, shareCtx) ) {

+        free(pcp);

+        return NULL;

+    }

+

+    return pcp;

+}

+

+static unsigned int

+dri2GetAPIMask(__DRIscreen *screen)

+{

+    return screen->api_mask;

+}

+

+static __DRIcontext *

+dri2CreateNewContextForAPI(__DRIscreen *screen, int api,

+			   const __DRIconfig *config,

+			   __DRIcontext *shared, void *data)

+{

+    __DRIcontext *context;

+    const struct gl_config *modes = (config != NULL) ? &config->modes : NULL;

+    void *shareCtx = (shared != NULL) ? shared->driverPrivate : NULL;

+    gl_api mesa_api;

+

+    if (!(screen->api_mask & (1 << api)))

+	return NULL;

+

+    switch (api) {

+    case __DRI_API_OPENGL:

+	    mesa_api = API_OPENGL;

+	    break;

+    case __DRI_API_GLES:

+	    mesa_api = API_OPENGLES;

+	    break;

+    case __DRI_API_GLES2:

+	    mesa_api = API_OPENGLES2;

+	    break;

+    default:

+	    return NULL;

+    }

+

+    context = malloc(sizeof *context);

+    if (!context)

+	return NULL;

+

+    context->driScreenPriv = screen;

+    context->driDrawablePriv = NULL;

+    context->loaderPrivate = data;

+    

+    if (!(*screen->DriverAPI.CreateContext)(mesa_api, modes,

+					    context, shareCtx) ) {

+        free(context);

+        return NULL;

+    }

+

+    return context;

+}

+

+

+static __DRIcontext *

+dri2CreateNewContext(__DRIscreen *screen, const __DRIconfig *config,

+		      __DRIcontext *shared, void *data)

+{

+   return dri2CreateNewContextForAPI(screen, __DRI_API_OPENGL,

+				     config, shared, data);

+}

+

+static int

+driCopyContext(__DRIcontext *dest, __DRIcontext *src, unsigned long mask)

+{

+    return GL_FALSE;

+}

+

+/*@}*/

+

+

+/*****************************************************************/

+/** \name Screen handling functions                              */

+/*****************************************************************/

+/*@{*/

+

+/**

+ * Destroy the per-screen private information.

+ * 

+ * \internal

+ * This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls

+ * drmClose(), and finally frees \p screenPrivate.

+ */

+static void driDestroyScreen(__DRIscreen *psp)

+{

+    if (psp) {

+	/* No interaction with the X-server is possible at this point.  This

+	 * routine is called after XCloseDisplay, so there is no protocol

+	 * stream open to the X-server anymore.

+	 */

+

+       _mesa_destroy_shader_compiler();

+

+	if (psp->DriverAPI.DestroyScreen)

+	    (*psp->DriverAPI.DestroyScreen)(psp);

+

+	if (!psp->dri2.enabled) {

+	   (void)drmUnmap((drmAddress)psp->pSAREA, SAREA_MAX);

+	   (void)drmUnmap((drmAddress)psp->pFB, psp->fbSize);

+	   (void)drmCloseOnce(psp->fd);

+	} else {

+	   driDestroyOptionCache(&psp->optionCache);

+	   driDestroyOptionInfo(&psp->optionInfo);

+	}

+

+	free(psp);

+    }

+}

+

+static void

+setupLoaderExtensions(__DRIscreen *psp,

+		      const __DRIextension **extensions)

+{

+    int i;

+

+    for (i = 0; extensions[i]; i++) {

+	if (strcmp(extensions[i]->name, __DRI_GET_DRAWABLE_INFO) == 0)

+	    psp->getDrawableInfo = (__DRIgetDrawableInfoExtension *) extensions[i];

+	if (strcmp(extensions[i]->name, __DRI_DAMAGE) == 0)

+	    psp->damage = (__DRIdamageExtension *) extensions[i];

+	if (strcmp(extensions[i]->name, __DRI_SYSTEM_TIME) == 0)

+	    psp->systemTime = (__DRIsystemTimeExtension *) extensions[i];

+	if (strcmp(extensions[i]->name, __DRI_DRI2_LOADER) == 0)

+	    psp->dri2.loader = (__DRIdri2LoaderExtension *) extensions[i];

+	if (strcmp(extensions[i]->name, __DRI_IMAGE_LOOKUP) == 0)

+	    psp->dri2.image = (__DRIimageLookupExtension *) extensions[i];

+	if (strcmp(extensions[i]->name, __DRI_USE_INVALIDATE) == 0)

+	    psp->dri2.useInvalidate = (__DRIuseInvalidateExtension *) extensions[i];

+    }

+}

+

+/**

+ * This is the bootstrap function for the driver.  libGL supplies all of the

+ * requisite information about the system, and the driver initializes itself.

+ * This routine also fills in the linked list pointed to by \c driver_modes

+ * with the \c struct gl_config that the driver can support for windows or

+ * pbuffers.

+ *

+ * For legacy DRI.

+ * 

+ * \param scrn  Index of the screen

+ * \param ddx_version Version of the 2D DDX.  This may not be meaningful for

+ *                    all drivers.

+ * \param dri_version Version of the "server-side" DRI.

+ * \param drm_version Version of the kernel DRM.

+ * \param frame_buffer Data describing the location and layout of the

+ *                     framebuffer.

+ * \param pSAREA       Pointer to the SAREA.

+ * \param fd           Device handle for the DRM.

+ * \param extensions   ??

+ * \param driver_modes  Returns modes suppoted by the driver

+ * \param loaderPrivate  ??

+ * 

+ * \note There is no need to check the minimum API version in this

+ * function.  Since the name of this function is versioned, it is

+ * impossible for a loader that is too old to even load this driver.

+ */

+static __DRIscreen *

+driCreateNewScreen(int scrn,

+		   const __DRIversion *ddx_version,

+		   const __DRIversion *dri_version,

+		   const __DRIversion *drm_version,

+		   const __DRIframebuffer *frame_buffer,

+		   drmAddress pSAREA, int fd, 

+		   const __DRIextension **extensions,

+		   const __DRIconfig ***driver_modes,

+		   void *loaderPrivate)

+{

+    static const __DRIextension *emptyExtensionList[] = { NULL };

+    __DRIscreen *psp;

+

+    if (driDriverAPI.InitScreen == NULL)

+	return NULL;

+

+    psp = calloc(1, sizeof *psp);

+    if (!psp)

+	return NULL;

+

+    setupLoaderExtensions(psp, extensions);

+

+    /*

+    ** NOT_DONE: This is used by the X server to detect when the client

+    ** has died while holding the drawable lock.  The client sets the

+    ** drawable lock to this value.

+    */

+    psp->drawLockID = 1;

+

+    psp->drm_version = *drm_version;

+    psp->ddx_version = *ddx_version;

+    psp->dri_version = *dri_version;

+

+    psp->pSAREA = pSAREA;

+    psp->lock = (drmLock *) &psp->pSAREA->lock;

+

+    psp->pFB = frame_buffer->base;

+    psp->fbSize = frame_buffer->size;

+    psp->fbStride = frame_buffer->stride;

+    psp->fbWidth = frame_buffer->width;

+    psp->fbHeight = frame_buffer->height;

+    psp->devPrivSize = frame_buffer->dev_priv_size;

+    psp->pDevPriv = frame_buffer->dev_priv;

+    psp->fbBPP = psp->fbStride * 8 / frame_buffer->width;

+

+    psp->extensions = emptyExtensionList;

+    psp->fd = fd;

+    psp->myNum = scrn;

+    psp->dri2.enabled = GL_FALSE;

+

+    psp->DriverAPI = driDriverAPI;

+    psp->api_mask = (1 << __DRI_API_OPENGL);

+

+    *driver_modes = driDriverAPI.InitScreen(psp);

+    if (*driver_modes == NULL) {

+	free(psp);

+	return NULL;

+    }

+

+    return psp;

+}

+

+/**

+ * DRI2

+ */

+static __DRIscreen *

+dri2CreateNewScreen(int scrn, int fd,

+		    const __DRIextension **extensions,

+		    const __DRIconfig ***driver_configs, void *data)

+{

+    static const __DRIextension *emptyExtensionList[] = { NULL };

+    __DRIscreen *psp;

+    drmVersionPtr version;

+

+    if (driDriverAPI.InitScreen2 == NULL)

+        return NULL;

+

+    psp = calloc(1, sizeof(*psp));

+    if (!psp)

+	return NULL;

+

+    setupLoaderExtensions(psp, extensions);

+

+    version = drmGetVersion(fd);

+    if (version) {

+	psp->drm_version.major = version->version_major;

+	psp->drm_version.minor = version->version_minor;

+	psp->drm_version.patch = version->version_patchlevel;

+	drmFreeVersion(version);

+    }

+

+    psp->extensions = emptyExtensionList;

+    psp->fd = fd;

+    psp->myNum = scrn;

+    psp->dri2.enabled = GL_TRUE;

+

+    psp->DriverAPI = driDriverAPI;

+    psp->api_mask = (1 << __DRI_API_OPENGL);

+    *driver_configs = driDriverAPI.InitScreen2(psp);

+    if (*driver_configs == NULL) {

+	free(psp);

+	return NULL;

+    }

+

+    psp->DriverAPI = driDriverAPI;

+    psp->loaderPrivate = data;

+

+    driParseOptionInfo(&psp->optionInfo, __dri2ConfigOptions,

+		       __dri2NConfigOptions);

+    driParseConfigFiles(&psp->optionCache, &psp->optionInfo, psp->myNum,

+			"dri2");

+

+    return psp;

+}

+

+static const __DRIextension **driGetExtensions(__DRIscreen *psp)

+{

+    return psp->extensions;

+}

+

+/** Core interface */

+const __DRIcoreExtension driCoreExtension = {

+    { __DRI_CORE, __DRI_CORE_VERSION },

+    NULL,

+    driDestroyScreen,

+    driGetExtensions,

+    driGetConfigAttrib,

+    driIndexConfigAttrib,

+    NULL,

+    driDestroyDrawable,

+    driSwapBuffers,

+    NULL,

+    driCopyContext,

+    driDestroyContext,

+    driBindContext,

+    driUnbindContext

+};

+

+/** Legacy DRI interface */

+const __DRIlegacyExtension driLegacyExtension = {

+    { __DRI_LEGACY, __DRI_LEGACY_VERSION },

+    driCreateNewScreen,

+    driCreateNewDrawable,

+    driCreateNewContext,

+};

+

+/** DRI2 interface */

+const __DRIdri2Extension driDRI2Extension = {

+    { __DRI_DRI2, __DRI_DRI2_VERSION },

+    dri2CreateNewScreen,

+    dri2CreateNewDrawable,

+    dri2CreateNewContext,

+    dri2GetAPIMask,

+    dri2CreateNewContextForAPI,

+    dri2AllocateBuffer,

+    dri2ReleaseBuffer

+};

+

+const __DRI2configQueryExtension dri2ConfigQueryExtension = {

+   { __DRI2_CONFIG_QUERY, __DRI2_CONFIG_QUERY_VERSION },

+   dri2ConfigQueryb,

+   dri2ConfigQueryi,

+   dri2ConfigQueryf,

+};

+

+/**

+ * Calculate amount of swap interval used between GLX buffer swaps.

+ * 

+ * The usage value, on the range [0,max], is the fraction of total swap

+ * interval time used between GLX buffer swaps is calculated.

+ *

+ *            \f$p = t_d / (i * t_r)\f$

+ * 

+ * Where \f$t_d\f$ is the time since the last GLX buffer swap, \f$i\f$ is the

+ * swap interval (as set by \c glXSwapIntervalSGI), and \f$t_r\f$ time

+ * required for a single vertical refresh period (as returned by \c

+ * glXGetMscRateOML).

+ * 

+ * See the documentation for the GLX_MESA_swap_frame_usage extension for more

+ * details.

+ *

+ * \param   dPriv  Pointer to the private drawable structure.

+ * \return  If less than a single swap interval time period was required

+ *          between GLX buffer swaps, a number greater than 0 and less than

+ *          1.0 is returned.  If exactly one swap interval time period is

+ *          required, 1.0 is returned, and if more than one is required then

+ *          a number greater than 1.0 will be returned.

+ *

+ * \sa glXSwapIntervalSGI glXGetMscRateOML

+ * 

+ * \todo Instead of caching the \c glXGetMscRateOML function pointer, would it

+ *       be possible to cache the sync rate?

+ */

+float

+driCalculateSwapUsage( __DRIdrawable *dPriv, int64_t last_swap_ust,

+		       int64_t current_ust )

+{

+   int32_t   n;

+   int32_t   d;

+   int       interval;

+   float     usage = 1.0;

+   __DRIscreen *psp = dPriv->driScreenPriv;

+

+   if ( (*psp->systemTime->getMSCRate)(dPriv, &n, &d, dPriv->loaderPrivate) ) {

+      interval = (dPriv->swap_interval != 0) ? dPriv->swap_interval : 1;

+

+

+      /* We want to calculate

+       * (current_UST - last_swap_UST) / (interval * us_per_refresh).  We get

+       * current_UST by calling __glXGetUST.  last_swap_UST is stored in

+       * dPriv->swap_ust.  interval has already been calculated.

+       *

+       * The only tricky part is us_per_refresh.  us_per_refresh is

+       * 1000000 / MSC_rate.  We know the MSC_rate is n / d.  We can flip it

+       * around and say us_per_refresh = 1000000 * d / n.  Since this goes in

+       * the denominator of the final calculation, we calculate

+       * (interval * 1000000 * d) and move n into the numerator.

+       */

+

+      usage = (current_ust - last_swap_ust);

+      usage *= n;

+      usage /= (interval * d);

+      usage /= 1000000.0;

+   }

+   

+   return usage;

+}

+

+void

+dri2InvalidateDrawable(__DRIdrawable *drawable)

+{

+    drawable->dri2.stamp++;

+}

+

+/*@}*/

diff --git a/mesalib/src/mesa/drivers/dri/common/dri_util.h b/mesalib/src/mesa/drivers/dri/common/dri_util.h
index 3d3d5c9cd..8d2a38524 100644
--- a/mesalib/src/mesa/drivers/dri/common/dri_util.h
+++ b/mesalib/src/mesa/drivers/dri/common/dri_util.h
@@ -1,563 +1,563 @@
-/*
- * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
- * 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, sub license, 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 (including the
- * next paragraph) 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 NON-INFRINGEMENT.
- * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS 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.
- */
-
-/**
- * \file dri_util.h
- * DRI utility functions definitions.
- *
- * This module acts as glue between GLX and the actual hardware driver.  A DRI
- * driver doesn't really \e have to use any of this - it's optional.  But, some
- * useful stuff is done here that otherwise would have to be duplicated in most
- * drivers.
- * 
- * Basically, these utility functions take care of some of the dirty details of
- * screen initialization, context creation, context binding, DRM setup, etc.
- *
- * These functions are compiled into each DRI driver so libGL.so knows nothing
- * about them.
- *
- * \sa dri_util.c.
- * 
- * \author Kevin E. Martin <kevin@precisioninsight.com>
- * \author Brian Paul <brian@precisioninsight.com>
- */
-
-#ifndef _DRI_UTIL_H_
-#define _DRI_UTIL_H_
-
-#include <GL/gl.h>
-#include <drm.h>
-#include <drm_sarea.h>
-#include <xf86drm.h>
-#include "xmlconfig.h"
-#include "main/glheader.h"
-#include "main/mtypes.h"
-#include "GL/internal/dri_interface.h"
-
-#define GLX_BAD_CONTEXT                    5
-
-typedef struct __DRIswapInfoRec        __DRIswapInfo;
-
-/**
- * Extensions.
- */
-extern const __DRIlegacyExtension driLegacyExtension;
-extern const __DRIcoreExtension driCoreExtension;
-extern const __DRIdri2Extension driDRI2Extension;
-extern const __DRIextension driReadDrawableExtension;
-extern const __DRIcopySubBufferExtension driCopySubBufferExtension;
-extern const __DRIswapControlExtension driSwapControlExtension;
-extern const __DRImediaStreamCounterExtension driMediaStreamCounterExtension;
-extern const __DRI2configQueryExtension dri2ConfigQueryExtension;
-
-/**
- * Used by DRI_VALIDATE_DRAWABLE_INFO
- */
-#define DRI_VALIDATE_DRAWABLE_INFO_ONCE(pDrawPriv)              \
-    do {                                                        \
-	if (*(pDrawPriv->pStamp) != pDrawPriv->lastStamp) {     \
-	    __driUtilUpdateDrawableInfo(pDrawPriv);             \
-	}                                                       \
-    } while (0)
-
-
-/**
- * Utility macro to validate the drawable information.
- *
- * See __DRIdrawable::pStamp and __DRIdrawable::lastStamp.
- */
-#define DRI_VALIDATE_DRAWABLE_INFO(psp, pdp)                            \
-do {                                                                    \
-    while (*(pdp->pStamp) != pdp->lastStamp) {                          \
-        register unsigned int hwContext = psp->pSAREA->lock.lock &      \
-		     ~(DRM_LOCK_HELD | DRM_LOCK_CONT);                  \
-	DRM_UNLOCK(psp->fd, &psp->pSAREA->lock, hwContext);             \
-                                                                        \
-	DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);     \
-	DRI_VALIDATE_DRAWABLE_INFO_ONCE(pdp);                           \
-	DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);   \
-                                                                        \
-	DRM_LIGHT_LOCK(psp->fd, &psp->pSAREA->lock, hwContext);         \
-    }                                                                   \
-} while (0)
-
-/**
- * Same as above, but for two drawables simultaneously.
- *
- */
-
-#define DRI_VALIDATE_TWO_DRAWABLES_INFO(psp, pdp, prp)			\
-do {								\
-    while (*((pdp)->pStamp) != (pdp)->lastStamp ||			\
-	   *((prp)->pStamp) != (prp)->lastStamp) {			\
-        register unsigned int hwContext = (psp)->pSAREA->lock.lock &	\
-	    ~(DRM_LOCK_HELD | DRM_LOCK_CONT);				\
-	DRM_UNLOCK((psp)->fd, &(psp)->pSAREA->lock, hwContext);		\
-									\
-	DRM_SPINLOCK(&(psp)->pSAREA->drawable_lock, (psp)->drawLockID);	\
-	DRI_VALIDATE_DRAWABLE_INFO_ONCE(pdp);                           \
-	DRI_VALIDATE_DRAWABLE_INFO_ONCE(prp);				\
-	DRM_SPINUNLOCK(&(psp)->pSAREA->drawable_lock, (psp)->drawLockID); \
-									\
-	DRM_LIGHT_LOCK((psp)->fd, &(psp)->pSAREA->lock, hwContext);	\
-    }                                                                   \
-} while (0)
-
-
-/**
- * Driver callback functions.
- *
- * Each DRI driver must have one of these structures with all the pointers set
- * to appropriate functions within the driver.
- * 
- * When glXCreateContext() is called, for example, it'll call a helper function
- * dri_util.c which in turn will jump through the \a CreateContext pointer in
- * this structure.
- */
-struct __DriverAPIRec {
-    const __DRIconfig **(*InitScreen) (__DRIscreen * priv);
-
-    /**
-     * Screen destruction callback
-     */
-    void (*DestroyScreen)(__DRIscreen *driScrnPriv);
-
-    /**
-     * Context creation callback
-     */	    	    
-    GLboolean (*CreateContext)(gl_api api,
-			       const struct gl_config *glVis,
-			       __DRIcontext *driContextPriv,
-                               void *sharedContextPrivate);
-
-    /**
-     * Context destruction callback
-     */
-    void (*DestroyContext)(__DRIcontext *driContextPriv);
-
-    /**
-     * Buffer (drawable) creation callback
-     */
-    GLboolean (*CreateBuffer)(__DRIscreen *driScrnPriv,
-                              __DRIdrawable *driDrawPriv,
-                              const struct gl_config *glVis,
-                              GLboolean pixmapBuffer);
-    
-    /**
-     * Buffer (drawable) destruction callback
-     */
-    void (*DestroyBuffer)(__DRIdrawable *driDrawPriv);
-
-    /**
-     * Buffer swapping callback 
-     */
-    void (*SwapBuffers)(__DRIdrawable *driDrawPriv);
-
-    /**
-     * Context activation callback
-     */
-    GLboolean (*MakeCurrent)(__DRIcontext *driContextPriv,
-                             __DRIdrawable *driDrawPriv,
-                             __DRIdrawable *driReadPriv);
-
-    /**
-     * Context unbinding callback
-     */
-    GLboolean (*UnbindContext)(__DRIcontext *driContextPriv);
-  
-    /**
-     * Retrieves statistics about buffer swap operations.  Required if
-     * GLX_OML_sync_control or GLX_MESA_swap_frame_usage is supported.
-     */
-    int (*GetSwapInfo)( __DRIdrawable *dPriv, __DRIswapInfo * sInfo );
-
-
-    /**
-     * These are required if GLX_OML_sync_control is supported.
-     */
-    /*@{*/
-    int (*WaitForMSC)( __DRIdrawable *priv, int64_t target_msc, 
-		       int64_t divisor, int64_t remainder,
-		       int64_t * msc );
-    int (*WaitForSBC)( __DRIdrawable *priv, int64_t target_sbc,
-		       int64_t * msc, int64_t * sbc );
-
-    int64_t (*SwapBuffersMSC)( __DRIdrawable *priv, int64_t target_msc,
-			       int64_t divisor, int64_t remainder );
-    /*@}*/
-    void (*CopySubBuffer)(__DRIdrawable *driDrawPriv,
-			  int x, int y, int w, int h);
-
-    /**
-     * New version of GetMSC so we can pass drawable data to the low
-     * level DRM driver (e.g. pipe info).  Required if
-     * GLX_SGI_video_sync or GLX_OML_sync_control is supported.
-     */
-    int (*GetDrawableMSC) ( __DRIscreen * priv,
-			    __DRIdrawable *drawablePrivate,
-			    int64_t *count);
-
-
-
-    /* DRI2 Entry point */
-    const __DRIconfig **(*InitScreen2) (__DRIscreen * priv);
-
-    __DRIbuffer *(*AllocateBuffer) (__DRIscreen *screenPrivate,
-				    unsigned int attachment,
-				    unsigned int format,
-				    int width, int height);
-    void (*ReleaseBuffer) (__DRIscreen *screenPrivate, __DRIbuffer *buffer);
-};
-
-extern const struct __DriverAPIRec driDriverAPI;
-
-
-struct __DRIswapInfoRec {
-    /** 
-     * Number of swapBuffers operations that have been *completed*. 
-     */
-    uint64_t swap_count;
-
-    /**
-     * Unadjusted system time of the last buffer swap.  This is the time
-     * when the swap completed, not the time when swapBuffers was called.
-     */
-    int64_t   swap_ust;
-
-    /**
-     * Number of swap operations that occurred after the swap deadline.  That
-     * is if a swap happens more than swap_interval frames after the previous
-     * swap, it has missed its deadline.  If swap_interval is 0, then the
-     * swap deadline is 1 frame after the previous swap.
-     */
-    uint64_t swap_missed_count;
-
-    /**
-     * Amount of time used by the last swap that missed its deadline.  This
-     * is calculated as (__glXGetUST() - swap_ust) / (swap_interval * 
-     * time_for_single_vrefresh)).  If the actual value of swap_interval is
-     * 0, then 1 is used instead.  If swap_missed_count is non-zero, this
-     * should be greater-than 1.0.
-     */
-    float     swap_missed_usage;
-};
-
-
-/**
- * Per-drawable private DRI driver information.
- */
-struct __DRIdrawableRec {
-    /**
-     * Kernel drawable handle
-     */
-    drm_drawable_t hHWDrawable;
-
-    /**
-     * Driver's private drawable information.  
-     *
-     * This structure is opaque.
-     */
-    void *driverPrivate;
-
-    /**
-     * Private data from the loader.  We just hold on to it and pass
-     * it back when calling into loader provided functions.
-     */
-    void *loaderPrivate;
-
-    /**
-     * Reference count for number of context's currently bound to this
-     * drawable.  
-     *
-     * Once it reaches zero, the drawable can be destroyed.
-     *
-     * \note This behavior will change with GLX 1.3.
-     */
-    int refcount;
-
-    /**
-     * Index of this drawable information in the SAREA.
-     */
-    unsigned int index;
-
-    /**
-     * Pointer to the "drawable has changed ID" stamp in the SAREA (or
-     * to dri2.stamp if DRI2 is being used).
-     */
-    unsigned int *pStamp;
-
-    /**
-     * Last value of the stamp.
-     *
-     * If this differs from the value stored at __DRIdrawable::pStamp,
-     * then the drawable information has been modified by the X server, and the
-     * drawable information (below) should be retrieved from the X server.
-     */
-    unsigned int lastStamp;
-
-    /**
-     * \name Drawable 
-     *
-     * Drawable information used in software fallbacks.
-     */
-    /*@{*/
-    int x;
-    int y;
-    int w;
-    int h;
-    int numClipRects;
-    drm_clip_rect_t *pClipRects;
-    /*@}*/
-
-    /**
-     * \name Back and depthbuffer
-     *
-     * Information about the back and depthbuffer where different from above.
-     */
-    /*@{*/
-    int backX;
-    int backY;
-    int backClipRectType;
-    int numBackClipRects;
-    drm_clip_rect_t *pBackClipRects;
-    /*@}*/
-
-    /**
-     * \name Vertical blank tracking information
-     * Used for waiting on vertical blank events.
-     */
-    /*@{*/
-    unsigned int vblSeq;
-    unsigned int vblFlags;
-    /*@}*/
-
-    /**
-     * \name Monotonic MSC tracking
-     *
-     * Low level driver is responsible for updating msc_base and
-     * vblSeq values so that higher level code can calculate
-     * a new msc value or msc target for a WaitMSC call.  The new value
-     * will be:
-     *   msc = msc_base + get_vblank_count() - vblank_base;
-     *
-     * And for waiting on a value, core code will use:
-     *   actual_target = target_msc - msc_base + vblank_base;
-     */
-    /*@{*/
-    int64_t vblank_base;
-    int64_t msc_base;
-    /*@}*/
-
-    /**
-     * Pointer to context to which this drawable is currently bound.
-     */
-    __DRIcontext *driContextPriv;
-
-    /**
-     * Pointer to screen on which this drawable was created.
-     */
-    __DRIscreen *driScreenPriv;
-
-    /**
-     * Controls swap interval as used by GLX_SGI_swap_control and
-     * GLX_MESA_swap_control.
-     */
-    unsigned int swap_interval;
-
-    struct {
-	unsigned int stamp;
-	drm_clip_rect_t clipRect;
-    } dri2;
-};
-
-/**
- * Per-context private driver information.
- */
-struct __DRIcontextRec {
-    /**
-     * Kernel context handle used to access the device lock.
-     */
-    drm_context_t hHWContext;
-
-    /**
-     * Device driver's private context data.  This structure is opaque.
-     */
-    void *driverPrivate;
-
-    /**
-     * Pointer to drawable currently bound to this context for drawing.
-     */
-    __DRIdrawable *driDrawablePriv;
-
-    /**
-     * Pointer to drawable currently bound to this context for reading.
-     */
-    __DRIdrawable *driReadablePriv;
-
-    /**
-     * Pointer to screen on which this context was created.
-     */
-    __DRIscreen *driScreenPriv;
-
-    /**
-     * The loaders's private context data.  This structure is opaque.
-     */
-    void *loaderPrivate;
-
-    struct {
-	int draw_stamp;
-	int read_stamp;
-    } dri2;
-};
-
-/**
- * Per-screen private driver information.
- */
-struct __DRIscreenRec {
-    /**
-     * Current screen's number
-     */
-    int myNum;
-
-    /**
-     * Callback functions into the hardware-specific DRI driver code.
-     */
-    struct __DriverAPIRec DriverAPI;
-
-    const __DRIextension **extensions;
-    /**
-     * DDX / 2D driver version information.
-     */
-    __DRIversion ddx_version;
-
-    /**
-     * DRI X extension version information.
-     */
-    __DRIversion dri_version;
-
-    /**
-     * DRM (kernel module) version information.
-     */
-    __DRIversion drm_version;
-
-    /**
-     * ID used when the client sets the drawable lock.
-     *
-     * The X server uses this value to detect if the client has died while
-     * holding the drawable lock.
-     */
-    int drawLockID;
-
-    /**
-     * File descriptor returned when the kernel device driver is opened.
-     * 
-     * Used to:
-     *   - authenticate client to kernel
-     *   - map the frame buffer, SAREA, etc.
-     *   - close the kernel device driver
-     */
-    int fd;
-
-    /**
-     * SAREA pointer 
-     *
-     * Used to access:
-     *   - the device lock
-     *   - the device-independent per-drawable and per-context(?) information
-     */
-    drm_sarea_t *pSAREA;
-
-    /**
-     * \name Direct frame buffer access information 
-     * Used for software fallbacks.
-     */
-    /*@{*/
-    unsigned char *pFB;
-    int fbSize;
-    int fbOrigin;
-    int fbStride;
-    int fbWidth;
-    int fbHeight;
-    int fbBPP;
-    /*@}*/
-
-    /**
-     * \name Device-dependent private information (stored in the SAREA).
-     *
-     * This data is accessed by the client driver only.
-     */
-    /*@{*/
-    void *pDevPriv;
-    int devPrivSize;
-    /*@}*/
-
-    /**
-     * Device-dependent private information (not stored in the SAREA).
-     * 
-     * This pointer is never touched by the DRI layer.
-     */
-#ifdef __cplusplus
-    void *priv;
-#else
-    void *private;
-#endif
-
-    /* Extensions provided by the loader. */
-    const __DRIgetDrawableInfoExtension *getDrawableInfo;
-    const __DRIsystemTimeExtension *systemTime;
-    const __DRIdamageExtension *damage;
-
-    struct {
-	/* Flag to indicate that this is a DRI2 screen.  Many of the above
-	 * fields will not be valid or initializaed in that case. */
-	int enabled;
-	__DRIdri2LoaderExtension *loader;
-	__DRIimageLookupExtension *image;
-	__DRIuseInvalidateExtension *useInvalidate;
-    } dri2;
-
-    /* The lock actually in use, old sarea or DRI2 */
-    drmLock *lock;
-
-    driOptionCache optionInfo;
-    driOptionCache optionCache;
-   unsigned int api_mask;
-   void *loaderPrivate;
-};
-
-extern void
-__driUtilUpdateDrawableInfo(__DRIdrawable *pdp);
-
-extern float
-driCalculateSwapUsage( __DRIdrawable *dPriv,
-		       int64_t last_swap_ust, int64_t current_ust );
-
-extern GLint
-driIntersectArea( drm_clip_rect_t rect1, drm_clip_rect_t rect2 );
-
-extern void
-dri2InvalidateDrawable(__DRIdrawable *drawable);
-
-#endif /* _DRI_UTIL_H_ */
+/*

+ * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.

+ * 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, sub license, 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 (including the

+ * next paragraph) 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 NON-INFRINGEMENT.

+ * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS 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.

+ */

+

+/**

+ * \file dri_util.h

+ * DRI utility functions definitions.

+ *

+ * This module acts as glue between GLX and the actual hardware driver.  A DRI

+ * driver doesn't really \e have to use any of this - it's optional.  But, some

+ * useful stuff is done here that otherwise would have to be duplicated in most

+ * drivers.

+ * 

+ * Basically, these utility functions take care of some of the dirty details of

+ * screen initialization, context creation, context binding, DRM setup, etc.

+ *

+ * These functions are compiled into each DRI driver so libGL.so knows nothing

+ * about them.

+ *

+ * \sa dri_util.c.

+ * 

+ * \author Kevin E. Martin <kevin@precisioninsight.com>

+ * \author Brian Paul <brian@precisioninsight.com>

+ */

+

+#ifndef _DRI_UTIL_H_

+#define _DRI_UTIL_H_

+

+#include <GL/gl.h>

+#include <drm.h>

+#include <drm_sarea.h>

+#include <xf86drm.h>

+#include "xmlconfig.h"

+#include "main/glheader.h"

+#include "main/mtypes.h"

+#include "GL/internal/dri_interface.h"

+

+#define GLX_BAD_CONTEXT                    5

+

+typedef struct __DRIswapInfoRec        __DRIswapInfo;

+

+/**

+ * Extensions.

+ */

+extern const __DRIlegacyExtension driLegacyExtension;

+extern const __DRIcoreExtension driCoreExtension;

+extern const __DRIdri2Extension driDRI2Extension;

+extern const __DRIextension driReadDrawableExtension;

+extern const __DRIcopySubBufferExtension driCopySubBufferExtension;

+extern const __DRIswapControlExtension driSwapControlExtension;

+extern const __DRImediaStreamCounterExtension driMediaStreamCounterExtension;

+extern const __DRI2configQueryExtension dri2ConfigQueryExtension;

+

+/**

+ * Used by DRI_VALIDATE_DRAWABLE_INFO

+ */

+#define DRI_VALIDATE_DRAWABLE_INFO_ONCE(pDrawPriv)              \

+    do {                                                        \

+	if (*(pDrawPriv->pStamp) != pDrawPriv->lastStamp) {     \

+	    __driUtilUpdateDrawableInfo(pDrawPriv);             \

+	}                                                       \

+    } while (0)

+

+

+/**

+ * Utility macro to validate the drawable information.

+ *

+ * See __DRIdrawable::pStamp and __DRIdrawable::lastStamp.

+ */

+#define DRI_VALIDATE_DRAWABLE_INFO(psp, pdp)                            \

+do {                                                                    \

+    while (*(pdp->pStamp) != pdp->lastStamp) {                          \

+        register unsigned int hwContext = psp->pSAREA->lock.lock &      \

+		     ~(DRM_LOCK_HELD | DRM_LOCK_CONT);                  \

+	DRM_UNLOCK(psp->fd, &psp->pSAREA->lock, hwContext);             \

+                                                                        \

+	DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);     \

+	DRI_VALIDATE_DRAWABLE_INFO_ONCE(pdp);                           \

+	DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);   \

+                                                                        \

+	DRM_LIGHT_LOCK(psp->fd, &psp->pSAREA->lock, hwContext);         \

+    }                                                                   \

+} while (0)

+

+/**

+ * Same as above, but for two drawables simultaneously.

+ *

+ */

+

+#define DRI_VALIDATE_TWO_DRAWABLES_INFO(psp, pdp, prp)			\

+do {								\

+    while (*((pdp)->pStamp) != (pdp)->lastStamp ||			\

+	   *((prp)->pStamp) != (prp)->lastStamp) {			\

+        register unsigned int hwContext = (psp)->pSAREA->lock.lock &	\

+	    ~(DRM_LOCK_HELD | DRM_LOCK_CONT);				\

+	DRM_UNLOCK((psp)->fd, &(psp)->pSAREA->lock, hwContext);		\

+									\

+	DRM_SPINLOCK(&(psp)->pSAREA->drawable_lock, (psp)->drawLockID);	\

+	DRI_VALIDATE_DRAWABLE_INFO_ONCE(pdp);                           \

+	DRI_VALIDATE_DRAWABLE_INFO_ONCE(prp);				\

+	DRM_SPINUNLOCK(&(psp)->pSAREA->drawable_lock, (psp)->drawLockID); \

+									\

+	DRM_LIGHT_LOCK((psp)->fd, &(psp)->pSAREA->lock, hwContext);	\

+    }                                                                   \

+} while (0)

+

+

+/**

+ * Driver callback functions.

+ *

+ * Each DRI driver must have one of these structures with all the pointers set

+ * to appropriate functions within the driver.

+ * 

+ * When glXCreateContext() is called, for example, it'll call a helper function

+ * dri_util.c which in turn will jump through the \a CreateContext pointer in

+ * this structure.

+ */

+struct __DriverAPIRec {

+    const __DRIconfig **(*InitScreen) (__DRIscreen * priv);

+

+    /**

+     * Screen destruction callback

+     */

+    void (*DestroyScreen)(__DRIscreen *driScrnPriv);

+

+    /**

+     * Context creation callback

+     */	    	    

+    GLboolean (*CreateContext)(gl_api api,

+			       const struct gl_config *glVis,

+			       __DRIcontext *driContextPriv,

+                               void *sharedContextPrivate);

+

+    /**

+     * Context destruction callback

+     */

+    void (*DestroyContext)(__DRIcontext *driContextPriv);

+

+    /**

+     * Buffer (drawable) creation callback

+     */

+    GLboolean (*CreateBuffer)(__DRIscreen *driScrnPriv,

+                              __DRIdrawable *driDrawPriv,

+                              const struct gl_config *glVis,

+                              GLboolean pixmapBuffer);

+    

+    /**

+     * Buffer (drawable) destruction callback

+     */

+    void (*DestroyBuffer)(__DRIdrawable *driDrawPriv);

+

+    /**

+     * Buffer swapping callback 

+     */

+    void (*SwapBuffers)(__DRIdrawable *driDrawPriv);

+

+    /**

+     * Context activation callback

+     */

+    GLboolean (*MakeCurrent)(__DRIcontext *driContextPriv,

+                             __DRIdrawable *driDrawPriv,

+                             __DRIdrawable *driReadPriv);

+

+    /**

+     * Context unbinding callback

+     */

+    GLboolean (*UnbindContext)(__DRIcontext *driContextPriv);

+  

+    /**

+     * Retrieves statistics about buffer swap operations.  Required if

+     * GLX_OML_sync_control or GLX_MESA_swap_frame_usage is supported.

+     */

+    int (*GetSwapInfo)( __DRIdrawable *dPriv, __DRIswapInfo * sInfo );

+

+

+    /**

+     * These are required if GLX_OML_sync_control is supported.

+     */

+    /*@{*/

+    int (*WaitForMSC)( __DRIdrawable *priv, int64_t target_msc, 

+		       int64_t divisor, int64_t remainder,

+		       int64_t * msc );

+    int (*WaitForSBC)( __DRIdrawable *priv, int64_t target_sbc,

+		       int64_t * msc, int64_t * sbc );

+

+    int64_t (*SwapBuffersMSC)( __DRIdrawable *priv, int64_t target_msc,

+			       int64_t divisor, int64_t remainder );

+    /*@}*/

+    void (*CopySubBuffer)(__DRIdrawable *driDrawPriv,

+			  int x, int y, int w, int h);

+

+    /**

+     * New version of GetMSC so we can pass drawable data to the low

+     * level DRM driver (e.g. pipe info).  Required if

+     * GLX_SGI_video_sync or GLX_OML_sync_control is supported.

+     */

+    int (*GetDrawableMSC) ( __DRIscreen * priv,

+			    __DRIdrawable *drawablePrivate,

+			    int64_t *count);

+

+

+

+    /* DRI2 Entry point */

+    const __DRIconfig **(*InitScreen2) (__DRIscreen * priv);

+

+    __DRIbuffer *(*AllocateBuffer) (__DRIscreen *screenPrivate,

+				    unsigned int attachment,

+				    unsigned int format,

+				    int width, int height);

+    void (*ReleaseBuffer) (__DRIscreen *screenPrivate, __DRIbuffer *buffer);

+};

+

+extern const struct __DriverAPIRec driDriverAPI;

+

+

+struct __DRIswapInfoRec {

+    /** 

+     * Number of swapBuffers operations that have been *completed*. 

+     */

+    uint64_t swap_count;

+

+    /**

+     * Unadjusted system time of the last buffer swap.  This is the time

+     * when the swap completed, not the time when swapBuffers was called.

+     */

+    int64_t   swap_ust;

+

+    /**

+     * Number of swap operations that occurred after the swap deadline.  That

+     * is if a swap happens more than swap_interval frames after the previous

+     * swap, it has missed its deadline.  If swap_interval is 0, then the

+     * swap deadline is 1 frame after the previous swap.

+     */

+    uint64_t swap_missed_count;

+

+    /**

+     * Amount of time used by the last swap that missed its deadline.  This

+     * is calculated as (__glXGetUST() - swap_ust) / (swap_interval * 

+     * time_for_single_vrefresh)).  If the actual value of swap_interval is

+     * 0, then 1 is used instead.  If swap_missed_count is non-zero, this

+     * should be greater-than 1.0.

+     */

+    float     swap_missed_usage;

+};

+

+

+/**

+ * Per-drawable private DRI driver information.

+ */

+struct __DRIdrawableRec {

+    /**

+     * Kernel drawable handle

+     */

+    drm_drawable_t hHWDrawable;

+

+    /**

+     * Driver's private drawable information.  

+     *

+     * This structure is opaque.

+     */

+    void *driverPrivate;

+

+    /**

+     * Private data from the loader.  We just hold on to it and pass

+     * it back when calling into loader provided functions.

+     */

+    void *loaderPrivate;

+

+    /**

+     * Reference count for number of context's currently bound to this

+     * drawable.  

+     *

+     * Once it reaches zero, the drawable can be destroyed.

+     *

+     * \note This behavior will change with GLX 1.3.

+     */

+    int refcount;

+

+    /**

+     * Index of this drawable information in the SAREA.

+     */

+    unsigned int index;

+

+    /**

+     * Pointer to the "drawable has changed ID" stamp in the SAREA (or

+     * to dri2.stamp if DRI2 is being used).

+     */

+    unsigned int *pStamp;

+

+    /**

+     * Last value of the stamp.

+     *

+     * If this differs from the value stored at __DRIdrawable::pStamp,

+     * then the drawable information has been modified by the X server, and the

+     * drawable information (below) should be retrieved from the X server.

+     */

+    unsigned int lastStamp;

+

+    /**

+     * \name Drawable 

+     *

+     * Drawable information used in software fallbacks.

+     */

+    /*@{*/

+    int x;

+    int y;

+    int w;

+    int h;

+    int numClipRects;

+    drm_clip_rect_t *pClipRects;

+    /*@}*/

+

+    /**

+     * \name Back and depthbuffer

+     *

+     * Information about the back and depthbuffer where different from above.

+     */

+    /*@{*/

+    int backX;

+    int backY;

+    int backClipRectType;

+    int numBackClipRects;

+    drm_clip_rect_t *pBackClipRects;

+    /*@}*/

+

+    /**

+     * \name Vertical blank tracking information

+     * Used for waiting on vertical blank events.

+     */

+    /*@{*/

+    unsigned int vblSeq;

+    unsigned int vblFlags;

+    /*@}*/

+

+    /**

+     * \name Monotonic MSC tracking

+     *

+     * Low level driver is responsible for updating msc_base and

+     * vblSeq values so that higher level code can calculate

+     * a new msc value or msc target for a WaitMSC call.  The new value

+     * will be:

+     *   msc = msc_base + get_vblank_count() - vblank_base;

+     *

+     * And for waiting on a value, core code will use:

+     *   actual_target = target_msc - msc_base + vblank_base;

+     */

+    /*@{*/

+    int64_t vblank_base;

+    int64_t msc_base;

+    /*@}*/

+

+    /**

+     * Pointer to context to which this drawable is currently bound.

+     */

+    __DRIcontext *driContextPriv;

+

+    /**

+     * Pointer to screen on which this drawable was created.

+     */

+    __DRIscreen *driScreenPriv;

+

+    /**

+     * Controls swap interval as used by GLX_SGI_swap_control and

+     * GLX_MESA_swap_control.

+     */

+    unsigned int swap_interval;

+

+    struct {

+	unsigned int stamp;

+	drm_clip_rect_t clipRect;

+    } dri2;

+};

+

+/**

+ * Per-context private driver information.

+ */

+struct __DRIcontextRec {

+    /**

+     * Kernel context handle used to access the device lock.

+     */

+    drm_context_t hHWContext;

+

+    /**

+     * Device driver's private context data.  This structure is opaque.

+     */

+    void *driverPrivate;

+

+    /**

+     * Pointer to drawable currently bound to this context for drawing.

+     */

+    __DRIdrawable *driDrawablePriv;

+

+    /**

+     * Pointer to drawable currently bound to this context for reading.

+     */

+    __DRIdrawable *driReadablePriv;

+

+    /**

+     * Pointer to screen on which this context was created.

+     */

+    __DRIscreen *driScreenPriv;

+

+    /**

+     * The loaders's private context data.  This structure is opaque.

+     */

+    void *loaderPrivate;

+

+    struct {

+	int draw_stamp;

+	int read_stamp;

+    } dri2;

+};

+

+/**

+ * Per-screen private driver information.

+ */

+struct __DRIscreenRec {

+    /**

+     * Current screen's number

+     */

+    int myNum;

+

+    /**

+     * Callback functions into the hardware-specific DRI driver code.

+     */

+    struct __DriverAPIRec DriverAPI;

+

+    const __DRIextension **extensions;

+    /**

+     * DDX / 2D driver version information.

+     */

+    __DRIversion ddx_version;

+

+    /**

+     * DRI X extension version information.

+     */

+    __DRIversion dri_version;

+

+    /**

+     * DRM (kernel module) version information.

+     */

+    __DRIversion drm_version;

+

+    /**

+     * ID used when the client sets the drawable lock.

+     *

+     * The X server uses this value to detect if the client has died while

+     * holding the drawable lock.

+     */

+    int drawLockID;

+

+    /**

+     * File descriptor returned when the kernel device driver is opened.

+     * 

+     * Used to:

+     *   - authenticate client to kernel

+     *   - map the frame buffer, SAREA, etc.

+     *   - close the kernel device driver

+     */

+    int fd;

+

+    /**

+     * SAREA pointer 

+     *

+     * Used to access:

+     *   - the device lock

+     *   - the device-independent per-drawable and per-context(?) information

+     */

+    drm_sarea_t *pSAREA;

+

+    /**

+     * \name Direct frame buffer access information 

+     * Used for software fallbacks.

+     */

+    /*@{*/

+    unsigned char *pFB;

+    int fbSize;

+    int fbOrigin;

+    int fbStride;

+    int fbWidth;

+    int fbHeight;

+    int fbBPP;

+    /*@}*/

+

+    /**

+     * \name Device-dependent private information (stored in the SAREA).

+     *

+     * This data is accessed by the client driver only.

+     */

+    /*@{*/

+    void *pDevPriv;

+    int devPrivSize;

+    /*@}*/

+

+    /**

+     * Device-dependent private information (not stored in the SAREA).

+     * 

+     * This pointer is never touched by the DRI layer.

+     */

+#ifdef __cplusplus

+    void *priv;

+#else

+    void *private;

+#endif

+

+    /* Extensions provided by the loader. */

+    const __DRIgetDrawableInfoExtension *getDrawableInfo;

+    const __DRIsystemTimeExtension *systemTime;

+    const __DRIdamageExtension *damage;

+

+    struct {

+	/* Flag to indicate that this is a DRI2 screen.  Many of the above

+	 * fields will not be valid or initializaed in that case. */

+	int enabled;

+	__DRIdri2LoaderExtension *loader;

+	__DRIimageLookupExtension *image;

+	__DRIuseInvalidateExtension *useInvalidate;

+    } dri2;

+

+    /* The lock actually in use, old sarea or DRI2 */

+    drmLock *lock;

+

+    driOptionCache optionInfo;

+    driOptionCache optionCache;

+   unsigned int api_mask;

+   void *loaderPrivate;

+};

+

+extern void

+__driUtilUpdateDrawableInfo(__DRIdrawable *pdp);

+

+extern float

+driCalculateSwapUsage( __DRIdrawable *dPriv,

+		       int64_t last_swap_ust, int64_t current_ust );

+

+extern GLint

+driIntersectArea( drm_clip_rect_t rect1, drm_clip_rect_t rect2 );

+

+extern void

+dri2InvalidateDrawable(__DRIdrawable *drawable);

+

+#endif /* _DRI_UTIL_H_ */

diff --git a/mesalib/src/mesa/drivers/dri/common/texmem.c b/mesalib/src/mesa/drivers/dri/common/texmem.c
index e927cf0ad..03c15c895 100644
--- a/mesalib/src/mesa/drivers/dri/common/texmem.c
+++ b/mesalib/src/mesa/drivers/dri/common/texmem.c
@@ -1,1342 +1,1342 @@
-/*
- * Copyright 2000-2001 VA Linux Systems, Inc.
- * (C) Copyright IBM Corporation 2002, 2003
- * 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
- * on the rights to use, copy, modify, merge, publish, distribute, sub
- * license, 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 (including the next
- * paragraph) 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 NON-INFRINGEMENT.  IN NO EVENT SHALL
- * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS 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.
- *
- * Authors:
- *    Ian Romanick <idr@us.ibm.com>
- *    Keith Whitwell <keithw@tungstengraphics.com>
- *    Kevin E. Martin <kem@users.sourceforge.net>
- *    Gareth Hughes <gareth@nvidia.com>
- */
-
-/** \file texmem.c
- * Implements all of the device-independent texture memory management.
- * 
- * Currently, only a simple LRU texture memory management policy is
- * implemented.  In the (hopefully very near) future, better policies will be
- * implemented.  The idea is that the DRI should be able to run in one of two
- * modes.  In the default mode the DRI will dynamically attempt to discover
- * the best texture management policy for the running application.  In the
- * other mode, the user (via some sort of as yet TBD mechanism) will select
- * a texture management policy that is known to work well with the
- * application.
- */
-
-#include "main/imports.h"
-#include "main/macros.h"
-#include "main/simple_list.h"
-#include "texmem.h"
-
-
-static unsigned dummy_swap_counter;
-
-
-/**
- * Calculate \f$\log_2\f$ of a value.  This is a particularly poor
- * implementation of this function.  However, since system performance is in
- * no way dependent on this function, the slowness of the implementation is
- * irrelevent.
- * 
- * \param n Value whose \f$\log_2\f$ is to be calculated
- */
-
-static GLuint
-driLog2( GLuint n )
-{
-   GLuint log2;
-
-   for ( log2 = 1 ; n > 1 ; log2++ ) {
-      n >>= 1;
-   }
-
-   return log2;
-}
-
-
-
-
-/**
- * Determine if a texture is resident in textureable memory.  Depending on
- * the driver, this may or may not be on-card memory.  It could be AGP memory
- * or anyother type of memory from which the hardware can directly read
- * texels.
- * 
- * This function is intended to be used as the \c IsTextureResident function
- * in the device's \c dd_function_table.
- * 
- * \param ctx GL context pointer (currently unused)
- * \param texObj Texture object to be tested
- */
-
-GLboolean
-driIsTextureResident( struct gl_context * ctx, 
-		      struct gl_texture_object * texObj )
-{
-   driTextureObject * t;
-
-
-   t = (driTextureObject *) texObj->DriverData;
-   return( (t != NULL) && (t->memBlock != NULL) );
-}
-
-
-
-
-/**
- * (Re)initialize the global circular LRU list.  The last element
- * in the array (\a heap->nrRegions) is the sentinal.  Keeping it
- * at the end of the array allows the other elements of the array
- * to be addressed rationally when looking up objects at a particular
- * location in texture memory.
- * 
- * \param heap Texture heap to be reset
- */
-
-static void resetGlobalLRU( driTexHeap * heap )
-{
-   drmTextureRegionPtr list = heap->global_regions;
-   unsigned       sz = 1U << heap->logGranularity;
-   unsigned       i;
-
-   for (i = 0 ; (i+1) * sz <= heap->size ; i++) {
-      list[i].prev = i-1;
-      list[i].next = i+1;
-      list[i].age = 0;
-   }
-
-   i--;
-   list[0].prev = heap->nrRegions;
-   list[i].prev = i-1;
-   list[i].next = heap->nrRegions;
-   list[heap->nrRegions].prev = i;
-   list[heap->nrRegions].next = 0;
-   heap->global_age[0] = 0;
-}
-
-/**
- * Print out debugging information about the local texture LRU.
- *
- * \param heap Texture heap to be printed
- * \param callername Name of calling function
- */
-static void printLocalLRU( driTexHeap * heap, const char *callername  )
-{
-   driTextureObject *t;
-   unsigned sz = 1U << heap->logGranularity;
-
-   fprintf( stderr, "%s in %s:\nLocal LRU, heap %d:\n", 
-	    __FUNCTION__, callername, heap->heapId );
-
-   foreach ( t, &heap->texture_objects ) {
-      if (!t->memBlock)
-	 continue;
-      if (!t->tObj) {
-	 fprintf( stderr, "Placeholder (%p) %d at 0x%x sz 0x%x\n",
-		  (void *)t,
-		  t->memBlock->ofs / sz,
-		  t->memBlock->ofs,
-		  t->memBlock->size );
-      } else {
-	 fprintf( stderr, "Texture (%p) at 0x%x sz 0x%x\n",
-		  (void *)t,
-		  t->memBlock->ofs,
-		  t->memBlock->size );
-      }
-   }
-   foreach ( t, heap->swapped_objects ) {
-      if (!t->tObj) {
-	 fprintf( stderr, "Swapped Placeholder (%p)\n", (void *)t );
-      } else {
-	 fprintf( stderr, "Swapped Texture (%p)\n", (void *)t );
-      }
-   }
-
-   fprintf( stderr, "\n" );
-}
-
-/**
- * Print out debugging information about the global texture LRU.
- *
- * \param heap Texture heap to be printed
- * \param callername Name of calling function
- */
-static void printGlobalLRU( driTexHeap * heap, const char *callername )
-{
-   drmTextureRegionPtr list = heap->global_regions;
-   unsigned int i, j;
-
-   fprintf( stderr, "%s in %s:\nGlobal LRU, heap %d list %p:\n", 
-	    __FUNCTION__, callername, heap->heapId, (void *)list );
-
-   for ( i = 0, j = heap->nrRegions ; i < heap->nrRegions ; i++ ) {
-      fprintf( stderr, "list[%d] age %d next %d prev %d in_use %d\n",
-	       j, list[j].age, list[j].next, list[j].prev, list[j].in_use );
-      j = list[j].next;
-      if ( j == heap->nrRegions ) break;
-   }
-
-   if ( j != heap->nrRegions ) {
-      fprintf( stderr, "Loop detected in global LRU\n" );
-      for ( i = 0 ; i < heap->nrRegions ; i++ ) {
-	 fprintf( stderr, "list[%d] age %d next %d prev %d in_use %d\n",
-		  i, list[i].age, list[i].next, list[i].prev, list[i].in_use );
-      }
-   }
-
-   fprintf( stderr, "\n" );
-}
-
-
-/**
- * Called by the client whenever it touches a local texture.
- * 
- * \param t Texture object that the client has accessed
- */
-
-void driUpdateTextureLRU( driTextureObject * t )
-{
-   driTexHeap   * heap;
-   drmTextureRegionPtr list;
-   unsigned   shift;
-   unsigned   start;
-   unsigned   end;
-   unsigned   i;
-
-
-   heap = t->heap;
-   if ( heap != NULL ) {
-      shift = heap->logGranularity;
-      start = t->memBlock->ofs >> shift;
-      end = (t->memBlock->ofs + t->memBlock->size - 1) >> shift;
-
-
-      heap->local_age = ++heap->global_age[0];
-      list = heap->global_regions;
-
-
-      /* Update the context's local LRU 
-       */
-
-      move_to_head( & heap->texture_objects, t );
-
-
-      for (i = start ; i <= end ; i++) {
-	 list[i].age = heap->local_age;
-
-	 /* remove_from_list(i)
-	  */
-	 list[(unsigned)list[i].next].prev = list[i].prev;
-	 list[(unsigned)list[i].prev].next = list[i].next;
-
-	 /* insert_at_head(list, i)
-	  */
-	 list[i].prev = heap->nrRegions;
-	 list[i].next = list[heap->nrRegions].next;
-	 list[(unsigned)list[heap->nrRegions].next].prev = i;
-	 list[heap->nrRegions].next = i;
-      }
-
-      if ( 0 ) {
-	 printGlobalLRU( heap, __FUNCTION__ );
-	 printLocalLRU( heap, __FUNCTION__ );
-      }
-   }
-}
-
-
-
-
-/**
- * Keep track of swapped out texture objects.
- * 
- * \param t Texture object to be "swapped" out of its texture heap
- */
-
-void driSwapOutTextureObject( driTextureObject * t )
-{
-   unsigned   face;
-
-
-   if ( t->memBlock != NULL ) {
-      assert( t->heap != NULL );
-      mmFreeMem( t->memBlock );
-      t->memBlock = NULL;
-
-      if (t->timestamp > t->heap->timestamp)
-	 t->heap->timestamp = t->timestamp;
-
-      t->heap->texture_swaps[0]++;
-      move_to_tail( t->heap->swapped_objects, t );
-      t->heap = NULL;
-   }
-   else {
-      assert( t->heap == NULL );
-   }
-
-
-   for ( face = 0 ; face < 6 ; face++ ) {
-      t->dirty_images[face] = ~0;
-   }
-}
-
-
-
-
-/**
- * Destroy hardware state associated with texture \a t.  Calls the
- * \a destroy_texture_object method associated with the heap from which
- * \a t was allocated.
- * 
- * \param t Texture object to be destroyed
- */
-
-void driDestroyTextureObject( driTextureObject * t )
-{
-   driTexHeap * heap;
-
-
-   if ( 0 ) {
-      fprintf( stderr, "[%s:%d] freeing %p (tObj = %p, DriverData = %p)\n",
-	       __FILE__, __LINE__,
-	       (void *)t,
-	       (void *)((t != NULL) ? t->tObj : NULL),
-	       (void *)((t != NULL && t->tObj != NULL) ? t->tObj->DriverData : NULL ));
-   }
-
-   if ( t != NULL ) {
-      if ( t->memBlock ) {
-	 heap = t->heap;
-	 assert( heap != NULL );
-
-	 heap->texture_swaps[0]++;
-
-	 mmFreeMem( t->memBlock );
-	 t->memBlock = NULL;
-
-	 if (t->timestamp > t->heap->timestamp)
-	    t->heap->timestamp = t->timestamp;
-
-	 heap->destroy_texture_object( heap->driverContext, t );
-	 t->heap = NULL;
-      }
-
-      if ( t->tObj != NULL ) {
-	 assert( t->tObj->DriverData == t );
-	 t->tObj->DriverData = NULL;
-      }
-
-      remove_from_list( t );
-      FREE( t );
-   }
-
-   if ( 0 ) {
-      fprintf( stderr, "[%s:%d] done freeing %p\n", __FILE__, __LINE__, (void *)t );
-   }
-}
-
-
-
-
-/**
- * Update the local heap's representation of texture memory based on
- * data in the SAREA.  This is done each time it is detected that some other
- * direct rendering client has held the lock.  This pertains to both our local
- * textures and the textures belonging to other clients.  Keep track of other
- * client's textures by pushing a placeholder texture onto the LRU list --
- * these are denoted by \a tObj being \a NULL.
- * 
- * \param heap Heap whose state is to be updated
- * \param offset Byte offset in the heap that has been stolen
- * \param size Size, in bytes, of the stolen block
- * \param in_use Non-zero if the block is pinned/reserved by the kernel
- */
-
-static void driTexturesGone( driTexHeap * heap, int offset, int size, 
-			     int in_use )
-{
-   driTextureObject * t;
-   driTextureObject * tmp;
-
-
-   foreach_s ( t, tmp, & heap->texture_objects ) {
-      if ( (t->memBlock->ofs < (offset + size))
-	   && ((t->memBlock->ofs + t->memBlock->size) > offset) ) {
-	 /* It overlaps - kick it out.  If the texture object is just a
-	  * place holder, then destroy it all together.  Otherwise, mark
-	  * it as being swapped out.
-	  */
-
-	 if ( t->tObj != NULL ) {
-	    driSwapOutTextureObject( t );
-	 }
-	 else {
-	    driDestroyTextureObject( t );
-	 }
-      }
-   }
-
-
-   {
-      t = (driTextureObject *) CALLOC( heap->texture_object_size );
-      if ( t == NULL ) return;
-
-      t->memBlock = mmAllocMem( heap->memory_heap, size, 0, offset );
-      if ( t->memBlock == NULL ) {
-	 fprintf( stderr, "Couldn't alloc placeholder: heap %u sz %x ofs %x\n", heap->heapId,
-		  (int)size, (int)offset );
-	 mmDumpMemInfo( heap->memory_heap );
-	 FREE(t);
-	 return;
-      }
-      t->heap = heap;
-      if (in_use) 
-	 t->reserved = 1; 
-      insert_at_head( & heap->texture_objects, t );
-   }
-}
-
-
-
-
-/**
- * Called by the client on lock contention to determine whether textures have
- * been stolen.  If another client has modified a region in which we have
- * textures, then we need to figure out which of our textures have been
- * removed and update our global LRU.
- * 
- * \param heap Texture heap to be updated
- */
-
-void driAgeTextures( driTexHeap * heap )
-{
-   drmTextureRegionPtr list = heap->global_regions;
-   unsigned       sz = 1U << (heap->logGranularity);
-   unsigned       i, nr = 0;
-
-
-   /* Have to go right round from the back to ensure stuff ends up
-    * LRU in the local list...  Fix with a cursor pointer.
-    */
-
-   for (i = list[heap->nrRegions].prev ; 
-	i != heap->nrRegions && nr < heap->nrRegions ; 
-	i = list[i].prev, nr++) {
-      /* If switching texturing schemes, then the SAREA might not have been
-       * properly cleared, so we need to reset the global texture LRU.
-       */
-
-      if ( (i * sz) > heap->size ) {
-	 nr = heap->nrRegions;
-	 break;
-      }
-
-      if (list[i].age > heap->local_age) 
-	  driTexturesGone( heap, i * sz, sz, list[i].in_use); 
-   }
-
-   /* Loop or uninitialized heap detected.  Reset.
-    */
-
-   if (nr == heap->nrRegions) {
-      driTexturesGone( heap, 0, heap->size, 0);
-      resetGlobalLRU( heap );
-   }
-
-   if ( 0 ) {
-      printGlobalLRU( heap, __FUNCTION__ );
-      printLocalLRU( heap, __FUNCTION__ );
-   }
-
-   heap->local_age = heap->global_age[0];
-}
-
-
-
-
-#define INDEX_ARRAY_SIZE 6 /* I'm not aware of driver with more than 2 heaps */
-
-/**
- * Allocate memory from a texture heap to hold a texture object.  This
- * routine will attempt to allocate memory for the texture from the heaps
- * specified by \c heap_array in order.  That is, first it will try to
- * allocate from \c heap_array[0], then \c heap_array[1], and so on.
- *
- * \param heap_array Array of pointers to texture heaps to use
- * \param nr_heaps Number of heap pointer in \a heap_array
- * \param t Texture object for which space is needed
- * \return The ID of the heap from which memory was allocated, or -1 if
- *         memory could not be allocated.
- *
- * \bug The replacement policy implemented by this function is horrible.
- */
-
-
-int
-driAllocateTexture( driTexHeap * const * heap_array, unsigned nr_heaps,
-		    driTextureObject * t )
-{
-   driTexHeap       * heap;
-   driTextureObject * temp;
-   driTextureObject * cursor;
-   unsigned           id;
-
-
-   /* In case it already has texture space, initialize heap.  This also
-    * prevents GCC from issuing a warning that heap might be used
-    * uninitialized.
-    */
-
-   heap = t->heap;
-
-
-   /* Run through each of the existing heaps and try to allocate a buffer
-    * to hold the texture.
-    */
-
-   for ( id = 0 ; (t->memBlock == NULL) && (id < nr_heaps) ; id++ ) {
-      heap = heap_array[ id ];
-      if ( heap != NULL ) {
-	 t->memBlock = mmAllocMem( heap->memory_heap, t->totalSize, 
-				   heap->alignmentShift, 0 );
-      }
-   }
-
-
-   /* Kick textures out until the requested texture fits.
-    */
-
-   if ( t->memBlock == NULL ) {
-      unsigned index[INDEX_ARRAY_SIZE];
-      unsigned nrGoodHeaps = 0;
-
-      /* Trying to avoid dynamic memory allocation. If you have more
-       * heaps, increase INDEX_ARRAY_SIZE. I'm not aware of any
-       * drivers with more than 2 tex heaps. */
-      assert( nr_heaps < INDEX_ARRAY_SIZE );
-
-      /* Sort large enough heaps by duty. Insertion sort should be
-       * fast enough for such a short array. */
-      for ( id = 0 ; id < nr_heaps ; id++ ) {
-	 heap = heap_array[ id ];
-
-	 if ( heap != NULL && t->totalSize <= heap->size ) {
-	    unsigned j;
-
-	    for ( j = 0 ; j < nrGoodHeaps; j++ ) {
-	       if ( heap->duty > heap_array[ index[ j ] ]->duty )
-		  break;
-	    }
-
-	    if ( j < nrGoodHeaps ) {
-	       memmove( &index[ j+1 ], &index[ j ],
-			sizeof(index[ 0 ]) * (nrGoodHeaps - j) );
-	    }
-
-	    index[ j ] = id;
-
-	    nrGoodHeaps++;
-	 }
-      }
-
-      for ( id = 0 ; (t->memBlock == NULL) && (id < nrGoodHeaps) ; id++ ) {
-	 heap = heap_array[ index[ id ] ];
-
-	 for ( cursor = heap->texture_objects.prev, temp = cursor->prev;
-	       cursor != &heap->texture_objects ; 
-	       cursor = temp, temp = cursor->prev ) {
-	       
-	    /* The the LRU element.  If the texture is bound to one of
-	     * the texture units, then we cannot kick it out.
-	     */
-	    if ( cursor->bound || cursor->reserved ) {
-	       continue;
-	    }
-
-	    if ( cursor->memBlock )
-	       heap->duty -= cursor->memBlock->size;
-
-	    /* If this is a placeholder, there's no need to keep it */
-	    if (cursor->tObj)
-	       driSwapOutTextureObject( cursor );
-	    else
-	       driDestroyTextureObject( cursor );
-
-	    t->memBlock = mmAllocMem( heap->memory_heap, t->totalSize, 
-				      heap->alignmentShift, 0 );
-
-	    if (t->memBlock)
-	       break;
-	 }
-      }
-
-      /* Rebalance duties. If a heap kicked more data than its duty,
-       * then all other heaps get that amount multiplied with their
-       * relative weight added to their duty. The negative duty is
-       * reset to 0. In the end all heaps have a duty >= 0.
-       *
-       * CAUTION: we must not change the heap pointer here, because it
-       * is used below to update the texture object.
-       */
-      for ( id = 0 ; id < nr_heaps ; id++ )
-	 if ( heap_array[ id ] != NULL && heap_array[ id ]->duty < 0) {
-	    int duty = -heap_array[ id ]->duty;
-	    double weight = heap_array[ id ]->weight;
-	    unsigned j;
-
-	    for ( j = 0 ; j < nr_heaps ; j++ )
-	       if ( j != id && heap_array[ j ] != NULL ) {
-		  heap_array[ j ]->duty += (double) duty *
-		     heap_array[ j ]->weight / weight;
-	       }
-
-	    heap_array[ id ]->duty = 0;
-	 }
-   }
-
-
-   if ( t->memBlock != NULL ) {
-      /* id and heap->heapId may or may not be the same value here.
-       */
-
-      assert( heap != NULL );
-      assert( (t->heap == NULL) || (t->heap == heap) );
-
-      t->heap = heap;
-      return heap->heapId;
-   }
-   else {
-      assert( t->heap == NULL );
-
-      fprintf( stderr, "[%s:%d] unable to allocate texture\n",
-	       __FUNCTION__, __LINE__ );
-      return -1;
-   }
-}
-
-
-
-
-
-
-/**
- * Set the location where the texture-swap counter is stored.
- */
-
-void
-driSetTextureSwapCounterLocation( driTexHeap * heap, unsigned * counter )
-{
-   heap->texture_swaps = (counter == NULL) ? & dummy_swap_counter : counter;
-}
-
-
-
-
-/**
- * Create a new heap for texture data.
- * 
- * \param heap_id             Device-dependent heap identifier.  This value
- *                            will returned by driAllocateTexture when memory
- *                            is allocated from this heap.
- * \param context             Device-dependent driver context.  This is
- *                            supplied as the first parameter to the
- *                            \c destroy_tex_obj function.
- * \param size                Size, in bytes, of the texture region
- * \param alignmentShift      Alignment requirement for textures.  If textures 
- *                            must be allocated on a 4096 byte boundry, this
- *                            would be 12.
- * \param nr_regions          Number of regions into which this texture space
- *                            should be partitioned
- * \param global_regions      Array of \c drmTextureRegion structures in the SAREA
- * \param global_age          Pointer to the global texture age in the SAREA
- * \param swapped_objects     Pointer to the list of texture objects that are
- *                            not in texture memory (i.e., have been swapped
- *                            out).
- * \param texture_object_size Size, in bytes, of a device-dependent texture
- *                            object
- * \param destroy_tex_obj     Function used to destroy a device-dependent
- *                            texture object
- *
- * \sa driDestroyTextureHeap
- */
-
-driTexHeap *
-driCreateTextureHeap( unsigned heap_id, void * context, unsigned size,
-		      unsigned alignmentShift, unsigned nr_regions,
-		      drmTextureRegionPtr global_regions, unsigned * global_age,
-		      driTextureObject * swapped_objects, 
-		      unsigned texture_object_size,
-		      destroy_texture_object_t * destroy_tex_obj
-		    )
-{
-   driTexHeap * heap;
-   unsigned     l;
-    
-    
-   if ( 0 )
-       fprintf( stderr, "%s( %u, %p, %u, %u, %u )\n",
-		__FUNCTION__,
-		heap_id, (void *)context, size, alignmentShift, nr_regions );
-
-   heap = (driTexHeap *) CALLOC( sizeof( driTexHeap ) );
-   if ( heap != NULL ) {
-      l = driLog2( (size - 1) / nr_regions );
-      if ( l < alignmentShift )
-      {
-	 l = alignmentShift;
-      }
-
-      heap->logGranularity = l;
-      heap->size = size & ~((1L << l) - 1);
-
-      heap->memory_heap = mmInit( 0, heap->size );
-      if ( heap->memory_heap != NULL ) {
-	 heap->heapId = heap_id;
-	 heap->driverContext = context;
-
-	 heap->alignmentShift = alignmentShift;
-	 heap->nrRegions = nr_regions;
-	 heap->global_regions = global_regions;
-	 heap->global_age = global_age;
-	 heap->swapped_objects = swapped_objects;
-	 heap->texture_object_size = texture_object_size;
-	 heap->destroy_texture_object = destroy_tex_obj;
-
-	 /* Force global heap init */
-	 if (heap->global_age[0] == 0)
-	     heap->local_age = ~0;
-	 else
-	     heap->local_age = 0;
-
-	 make_empty_list( & heap->texture_objects );
-	 driSetTextureSwapCounterLocation( heap, NULL );
-
-	 heap->weight = heap->size;
-	 heap->duty = 0;
-      }
-      else {
-	 FREE( heap );
-	 heap = NULL;
-      }
-   }
-
-
-   if ( 0 )
-       fprintf( stderr, "%s returning %p\n", __FUNCTION__, (void *)heap );
-
-   return heap;
-}
-
-
-
-
-/** Destroys a texture heap
- * 
- * \param heap Texture heap to be destroyed
- */
-
-void
-driDestroyTextureHeap( driTexHeap * heap )
-{
-   driTextureObject * t;
-   driTextureObject * temp;
-
-
-   if ( heap != NULL ) {
-      foreach_s( t, temp, & heap->texture_objects ) {
-	 driDestroyTextureObject( t );
-      }
-      foreach_s( t, temp, heap->swapped_objects ) {
-	 driDestroyTextureObject( t );
-      }
-
-      mmDestroy( heap->memory_heap );
-      FREE( heap );
-   }
-}
-
-
-
-
-/****************************************************************************/
-/**
- * Determine how many texels (including all mipmap levels) would be required
- * for a texture map of size \f$2^^\c base_size_log2\f$ would require.
- *
- * \param base_size_log2 \f$log_2\f$ of the size of a side of the texture
- * \param dimensions Number of dimensions of the texture.  Either 2 or 3.
- * \param faces Number of faces of the texture.  Either 1 or 6 (for cube maps).
- * \return Number of texels
- */
-
-static unsigned
-texels_this_map_size( int base_size_log2, unsigned dimensions, unsigned faces )
-{
-   unsigned  texels;
-
-
-   assert( (faces == 1) || (faces == 6) );
-   assert( (dimensions == 2) || (dimensions == 3) );
-
-   texels = 0;
-   if ( base_size_log2 >= 0 ) {
-      texels = (1U << (dimensions * base_size_log2));
-
-      /* See http://www.mail-archive.com/dri-devel@lists.sourceforge.net/msg03636.html
-       * for the complete explaination of why this formulation is used.
-       * Basically, the smaller mipmap levels sum to 0.333 the size of the
-       * level 0 map.  The total size is therefore the size of the map
-       * multipled by 1.333.  The +2 is there to round up.
-       */
-
-      texels = (texels * 4 * faces + 2) / 3;
-   }
-
-   return texels;
-}
-
-
-
-
-struct maps_per_heap {
-   unsigned  c[32];
-};
-
-static void
-fill_in_maximums( driTexHeap * const * heaps, unsigned nr_heaps,
-		  unsigned max_bytes_per_texel, unsigned max_size,
-		  unsigned mipmaps_at_once, unsigned dimensions,
-		  unsigned faces, struct maps_per_heap * max_textures )
-{
-   unsigned   heap;
-   unsigned   log2_size;
-   unsigned   mask;
-
-
-   /* Determine how many textures of each size can be stored in each
-    * texture heap.
-    */
-
-   for ( heap = 0 ; heap < nr_heaps ; heap++ ) {
-      if ( heaps[ heap ] == NULL ) {
-	 (void) memset( max_textures[ heap ].c, 0, 
-			sizeof( max_textures[ heap ].c ) );
-	 continue;
-      }
-
-      mask = (1U << heaps[ heap ]->logGranularity) - 1;
-
-      if ( 0 ) {
-	 fprintf( stderr, "[%s:%d] heap[%u] = %u bytes, mask = 0x%08x\n",
-		  __FILE__, __LINE__,
-		  heap, heaps[ heap ]->size, mask );
-      }
-
-      for ( log2_size = max_size ; log2_size > 0 ; log2_size-- ) {
-	 unsigned   total;
-
-
-	 /* Determine the total number of bytes required by a texture of
-	  * size log2_size.
-	  */
-
-	 total = texels_this_map_size( log2_size, dimensions, faces )
-	     - texels_this_map_size( log2_size - mipmaps_at_once,
-				     dimensions, faces );
-	 total *= max_bytes_per_texel;
-	 total = (total + mask) & ~mask;
-
-	 /* The number of textures of a given size that will fit in a heap
-	  * is equal to the size of the heap divided by the size of the
-	  * texture.
-	  */
-
-	 max_textures[ heap ].c[ log2_size ] = heaps[ heap ]->size / total;
-
-	 if ( 0 ) {
-	    fprintf( stderr, "[%s:%d] max_textures[%u].c[%02u] "
-		     "= 0x%08x / 0x%08x "
-		     "= %u (%u)\n",
-		     __FILE__, __LINE__,
-		     heap, log2_size,
-		     heaps[ heap ]->size, total,
-		     heaps[ heap ]->size / total,
-		     max_textures[ heap ].c[ log2_size ] );
-	 }
-      }
-   }
-}
-
-
-static unsigned
-get_max_size( unsigned nr_heaps,
-	      unsigned texture_units,
-	      unsigned max_size,
-	      int all_textures_one_heap,
-	      struct maps_per_heap * max_textures )
-{
-   unsigned   heap;
-   unsigned   log2_size;
-
-
-   /* Determine the largest texture size such that a texture of that size
-    * can be bound to each texture unit at the same time.  Some hardware
-    * may require that all textures be in the same texture heap for
-    * multitexturing.
-    */
-
-   for ( log2_size = max_size ; log2_size > 0 ; log2_size-- ) {
-      unsigned   total = 0;
-
-      for ( heap = 0 ; heap < nr_heaps ; heap++ )
-      {
-	 total += max_textures[ heap ].c[ log2_size ];
-
-	 if ( 0 ) {
-	    fprintf( stderr, "[%s:%d] max_textures[%u].c[%02u] = %u, "
-		     "total = %u\n", __FILE__, __LINE__, heap, log2_size,
-		     max_textures[ heap ].c[ log2_size ], total );
-	 }
-
-	 if ( (max_textures[ heap ].c[ log2_size ] >= texture_units)
-	      || (!all_textures_one_heap && (total >= texture_units)) ) {
-	    /* The number of mipmap levels is the log-base-2 of the
-	     * maximum texture size plus 1.  If the maximum texture size
-	     * is 1x1, the log-base-2 is 0 and 1 mipmap level (the base
-	     * level) is available.
-	     */
-
-	    return log2_size + 1;
-	 }
-      }
-   }
-
-   /* This should NEVER happen.  It should always be possible to have at
-    * *least* a 1x1 texture in memory!
-    */
-   assert( log2_size != 0 );
-   return 0;
-}
-
-#define SET_MAX(f,v) \
-    do { if ( max_sizes[v] != 0 ) { limits-> f = max_sizes[v]; } } while( 0 )
-
-#define SET_MAX_RECT(f,v) \
-    do { if ( max_sizes[v] != 0 ) { limits-> f = 1 << (max_sizes[v] - 1); } } while( 0 )
-
-
-/**
- * Given the amount of texture memory, the number of texture units, and the
- * maximum size of a texel, calculate the maximum texture size the driver can
- * advertise.
- * 
- * \param heaps Texture heaps for this card
- * \param nr_heap Number of texture heaps
- * \param limits OpenGL contants.  MaxTextureUnits must be set.
- * \param max_bytes_per_texel Maximum size of a single texel, in bytes
- * \param max_2D_size \f$\log_2\f$ of the maximum 2D texture size (i.e.,
- *     1024x1024 textures, this would be 10)
- * \param max_3D_size \f$\log_2\f$ of the maximum 3D texture size (i.e.,
- *     1024x1024x1024 textures, this would be 10)
- * \param max_cube_size \f$\log_2\f$ of the maximum cube texture size (i.e.,
- *     1024x1024 textures, this would be 10)
- * \param max_rect_size \f$\log_2\f$ of the maximum texture rectangle size
- *     (i.e., 1024x1024 textures, this would be 10).  This is a power-of-2
- *     even though texture rectangles need not be a power-of-2.
- * \param mipmaps_at_once Total number of mipmaps that can be used
- *     at one time.  For most hardware this will be \f$\c max_size + 1\f$.
- *     For hardware that does not support mipmapping, this will be 1.
- * \param all_textures_one_heap True if the hardware requires that all
- *     textures be in a single texture heap for multitexturing.
- * \param allow_larger_textures 0 conservative, 1 calculate limits
- *     so at least one worst-case texture can fit, 2 just use hw limits.
- */
-
-void
-driCalculateMaxTextureLevels( driTexHeap * const * heaps,
-			      unsigned nr_heaps,
-			      struct gl_constants * limits,
-			      unsigned max_bytes_per_texel,
-			      unsigned max_2D_size,
-			      unsigned max_3D_size,
-			      unsigned max_cube_size,
-			      unsigned max_rect_size,
-			      unsigned mipmaps_at_once,
-			      int all_textures_one_heap,
-			      int allow_larger_textures )
-{
-   struct maps_per_heap  max_textures[8];
-   unsigned         i;
-   const unsigned   dimensions[4] = { 2, 3, 2, 2 };
-   const unsigned   faces[4]      = { 1, 1, 6, 1 };
-   unsigned         max_sizes[4];
-   unsigned         mipmaps[4];
-
-
-   max_sizes[0] = max_2D_size;
-   max_sizes[1] = max_3D_size;
-   max_sizes[2] = max_cube_size;
-   max_sizes[3] = max_rect_size;
-
-   mipmaps[0] = mipmaps_at_once;
-   mipmaps[1] = mipmaps_at_once;
-   mipmaps[2] = mipmaps_at_once;
-   mipmaps[3] = 1;
-
-
-   /* Calculate the maximum number of texture levels in two passes.  The
-    * first pass determines how many textures of each power-of-two size
-    * (including all mipmap levels for that size) can fit in each texture
-    * heap.  The second pass finds the largest texture size that allows
-    * a texture of that size to be bound to every texture unit.
-    */
-
-   for ( i = 0 ; i < 4 ; i++ ) {
-      if ( (allow_larger_textures != 2) && (max_sizes[ i ] != 0) ) {
-	 fill_in_maximums( heaps, nr_heaps, max_bytes_per_texel,
-			   max_sizes[ i ], mipmaps[ i ],
-			   dimensions[ i ], faces[ i ],
-			   max_textures );
-
-	 max_sizes[ i ] = get_max_size( nr_heaps,
-					allow_larger_textures == 1 ?
-					1 : limits->MaxTextureUnits,
-					max_sizes[ i ],
-					all_textures_one_heap,
-					max_textures );
-      }
-      else if (max_sizes[ i ] != 0) {
-	 max_sizes[ i ] += 1;
-      }
-   }
-
-   SET_MAX( MaxTextureLevels,        0 );
-   SET_MAX( Max3DTextureLevels,      1 );
-   SET_MAX( MaxCubeTextureLevels,    2 );
-   SET_MAX_RECT( MaxTextureRectSize, 3 );
-}
-
-
-
-
-/**
- * Perform initial binding of default textures objects on a per unit, per
- * texture target basis.
- *
- * \param ctx Current OpenGL context
- * \param swapped List of swapped-out textures
- * \param targets Bit-mask of value texture targets
- */
-
-void driInitTextureObjects( struct gl_context *ctx, driTextureObject * swapped,
-			    GLuint targets )
-{
-   struct gl_texture_object *texObj;
-   GLuint tmp = ctx->Texture.CurrentUnit;
-   unsigned   i;
-
-
-   for ( i = 0 ; i < ctx->Const.MaxTextureUnits ; i++ ) {
-      ctx->Texture.CurrentUnit = i;
-
-      if ( (targets & DRI_TEXMGR_DO_TEXTURE_1D) != 0 ) {
-	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_1D_INDEX];
-	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_1D, texObj );
-	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );
-      }
-
-      if ( (targets & DRI_TEXMGR_DO_TEXTURE_2D) != 0 ) {
-	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_2D_INDEX];
-	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_2D, texObj );
-	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );
-      }
-
-      if ( (targets & DRI_TEXMGR_DO_TEXTURE_3D) != 0 ) {
-	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_3D_INDEX];
-	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_3D, texObj );
-	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );
-      }
-
-      if ( (targets & DRI_TEXMGR_DO_TEXTURE_CUBE) != 0 ) {
-	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_CUBE_INDEX];
-	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_CUBE_MAP_ARB, texObj );
-	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );
-      }
-
-      if ( (targets & DRI_TEXMGR_DO_TEXTURE_RECT) != 0 ) {
-	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_RECT_INDEX];
-	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_RECTANGLE_NV, texObj );
-	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );
-      }
-   }
-
-   ctx->Texture.CurrentUnit = tmp;
-}
-
-
-
-
-/**
- * Verify that the specified texture is in the specificed heap.
- * 
- * \param tex   Texture to be tested.
- * \param heap  Texture memory heap to be tested.
- * \return True if the texture is in the heap, false otherwise.
- */
-
-static GLboolean
-check_in_heap( const driTextureObject * tex, const driTexHeap * heap )
-{
-#if 1
-   return tex->heap == heap;
-#else
-   driTextureObject * curr;
-
-   foreach( curr, & heap->texture_objects ) {
-      if ( curr == tex ) {
-	 break;
-      }
-   }
-
-   return curr == tex;
-#endif
-}
-
-
-
-/****************************************************************************/
-/**
- * Validate the consistency of a set of texture heaps.
- * Original version by Keith Whitwell in r200/r200_sanity.c.
- */
-
-GLboolean
-driValidateTextureHeaps( driTexHeap * const * texture_heaps,
-			 unsigned nr_heaps, const driTextureObject * swapped )
-{
-   driTextureObject *t;
-   unsigned  i;
-
-   for ( i = 0 ; i < nr_heaps ; i++ ) {
-      int last_end = 0;
-      unsigned textures_in_heap = 0;
-      unsigned blocks_in_mempool = 0;
-      const driTexHeap * heap = texture_heaps[i];
-      const struct mem_block *p = heap->memory_heap;
-
-      /* Check each texture object has a MemBlock, and is linked into
-       * the correct heap.  
-       *
-       * Check the texobj base address corresponds to the MemBlock
-       * range.  Check the texobj size (recalculate?) fits within
-       * the MemBlock.
-       *
-       * Count the number of texobj's using this heap.
-       */
-
-      foreach ( t, &heap->texture_objects ) {
-	 if ( !check_in_heap( t, heap ) ) {
-	    fprintf( stderr, "%s memory block for texture object @ %p not "
-		     "found in heap #%d\n",
-		     __FUNCTION__, (void *)t, i );
-	    return GL_FALSE;
-	 }
-
-
-	 if ( t->totalSize > t->memBlock->size ) {
-	    fprintf( stderr, "%s: Memory block for texture object @ %p is "
-		     "only %u bytes, but %u are required\n",
-		     __FUNCTION__, (void *)t, t->totalSize, t->memBlock->size );
-	    return GL_FALSE;
-	 }
-
-	 textures_in_heap++;
-      }
-
-      /* Validate the contents of the heap:
-       *   - Ordering
-       *   - Overlaps
-       *   - Bounds
-       */
-
-      while ( p != NULL ) {
-	 if (p->reserved) {
-	    fprintf( stderr, "%s: Block (%08x,%x), is reserved?!\n",
-		     __FUNCTION__, p->ofs, p->size );
-	    return GL_FALSE;
-	 }
-
-	 if (p->ofs != last_end) {
-	    fprintf( stderr, "%s: blocks_in_mempool = %d, last_end = %d, p->ofs = %d\n",
-		     __FUNCTION__, blocks_in_mempool, last_end, p->ofs );
-	    return GL_FALSE;
-	 }
-
-	 if (!p->reserved && !p->free) {
-	    blocks_in_mempool++;
-	 }
-
-	 last_end = p->ofs + p->size;
-	 p = p->next;
-      }
-
-      if (textures_in_heap != blocks_in_mempool) {
-	 fprintf( stderr, "%s: Different number of textures objects (%u) and "
-		  "inuse memory blocks (%u)\n", 
-		  __FUNCTION__, textures_in_heap, blocks_in_mempool );
-	 return GL_FALSE;
-      }
-
-#if 0
-      fprintf( stderr, "%s: textures_in_heap = %u\n", 
-	       __FUNCTION__, textures_in_heap );
-#endif
-   }
-
-
-   /* Check swapped texobj's have zero memblocks
-    */
-   i = 0;
-   foreach ( t, swapped ) {
-      if ( t->memBlock != NULL ) {
-	 fprintf( stderr, "%s: Swapped texobj %p has non-NULL memblock %p\n",
-		  __FUNCTION__, (void *)t, (void *)t->memBlock );
-	 return GL_FALSE;
-      }
-      i++;
-   }
-
-#if 0
-   fprintf( stderr, "%s: swapped texture count = %u\n", __FUNCTION__, i );
-#endif
-
-   return GL_TRUE;
-}
-
-
-
-
-/****************************************************************************/
-/**
- * Compute which mipmap levels that really need to be sent to the hardware.
- * This depends on the base image size, GL_TEXTURE_MIN_LOD,
- * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.
- */
-
-void
-driCalculateTextureFirstLastLevel( driTextureObject * t )
-{
-   struct gl_texture_object * const tObj = t->tObj;
-   const struct gl_texture_image * const baseImage =
-       tObj->Image[0][tObj->BaseLevel];
-
-   /* These must be signed values.  MinLod and MaxLod can be negative numbers,
-    * and having firstLevel and lastLevel as signed prevents the need for
-    * extra sign checks.
-    */
-   int   firstLevel;
-   int   lastLevel;
-
-   /* Yes, this looks overly complicated, but it's all needed.
-    */
-
-   switch (tObj->Target) {
-   case GL_TEXTURE_1D:
-   case GL_TEXTURE_2D:
-   case GL_TEXTURE_3D:
-   case GL_TEXTURE_CUBE_MAP:
-      if (tObj->Sampler.MinFilter == GL_NEAREST ||
-          tObj->Sampler.MinFilter == GL_LINEAR) {
-         /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL.
-          */
-
-         firstLevel = lastLevel = tObj->BaseLevel;
-      }
-      else {
-	 firstLevel = tObj->BaseLevel + (GLint)(tObj->Sampler.MinLod + 0.5);
-	 firstLevel = MAX2(firstLevel, tObj->BaseLevel);
-	 firstLevel = MIN2(firstLevel, tObj->BaseLevel + baseImage->MaxLog2);
-	 lastLevel = tObj->BaseLevel + (GLint)(tObj->Sampler.MaxLod + 0.5);
-	 lastLevel = MAX2(lastLevel, t->tObj->BaseLevel);
-	 lastLevel = MIN2(lastLevel, t->tObj->BaseLevel + baseImage->MaxLog2);
-	 lastLevel = MIN2(lastLevel, t->tObj->MaxLevel);
-	 lastLevel = MAX2(firstLevel, lastLevel); /* need at least one level */
-      }
-      break;
-   case GL_TEXTURE_RECTANGLE_NV:
-   case GL_TEXTURE_4D_SGIS:
-      firstLevel = lastLevel = 0;
-      break;
-   default:
-      return;
-   }
-
-   /* save these values */
-   t->firstLevel = firstLevel;
-   t->lastLevel = lastLevel;
-}
-
-
-
-
-/**
- * \name DRI texture formats.  These vars are initialized to either the
- * big- or little-endian Mesa formats.
- */
-/*@{*/
-gl_format _dri_texformat_rgba8888 = MESA_FORMAT_NONE;
-gl_format _dri_texformat_argb8888 = MESA_FORMAT_NONE;
-gl_format _dri_texformat_rgb565 = MESA_FORMAT_NONE;
-gl_format _dri_texformat_argb4444 = MESA_FORMAT_NONE;
-gl_format _dri_texformat_argb1555 = MESA_FORMAT_NONE;
-gl_format _dri_texformat_al88 = MESA_FORMAT_NONE;
-gl_format _dri_texformat_a8 = MESA_FORMAT_A8;
-gl_format _dri_texformat_ci8 = MESA_FORMAT_CI8;
-gl_format _dri_texformat_i8 = MESA_FORMAT_I8;
-gl_format _dri_texformat_l8 = MESA_FORMAT_L8;
-/*@}*/
-
-
-/**
- * Initialize _dri_texformat_* vars according to whether we're on
- * a big or little endian system.
- */
-void
-driInitTextureFormats(void)
-{
-   if (_mesa_little_endian()) {
-      _dri_texformat_rgba8888	= MESA_FORMAT_RGBA8888;
-      _dri_texformat_argb8888	= MESA_FORMAT_ARGB8888;
-      _dri_texformat_rgb565	= MESA_FORMAT_RGB565;
-      _dri_texformat_argb4444	= MESA_FORMAT_ARGB4444;
-      _dri_texformat_argb1555	= MESA_FORMAT_ARGB1555;
-      _dri_texformat_al88	= MESA_FORMAT_AL88;
-   }
-   else {
-      _dri_texformat_rgba8888	= MESA_FORMAT_RGBA8888_REV;
-      _dri_texformat_argb8888	= MESA_FORMAT_ARGB8888_REV;
-      _dri_texformat_rgb565	= MESA_FORMAT_RGB565_REV;
-      _dri_texformat_argb4444	= MESA_FORMAT_ARGB4444_REV;
-      _dri_texformat_argb1555	= MESA_FORMAT_ARGB1555_REV;
-      _dri_texformat_al88	= MESA_FORMAT_AL88_REV;
-   }
-}
+/*

+ * Copyright 2000-2001 VA Linux Systems, Inc.

+ * (C) Copyright IBM Corporation 2002, 2003

+ * 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

+ * on the rights to use, copy, modify, merge, publish, distribute, sub

+ * license, 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 (including the next

+ * paragraph) 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 NON-INFRINGEMENT.  IN NO EVENT SHALL

+ * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS 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.

+ *

+ * Authors:

+ *    Ian Romanick <idr@us.ibm.com>

+ *    Keith Whitwell <keithw@tungstengraphics.com>

+ *    Kevin E. Martin <kem@users.sourceforge.net>

+ *    Gareth Hughes <gareth@nvidia.com>

+ */

+

+/** \file texmem.c

+ * Implements all of the device-independent texture memory management.

+ * 

+ * Currently, only a simple LRU texture memory management policy is

+ * implemented.  In the (hopefully very near) future, better policies will be

+ * implemented.  The idea is that the DRI should be able to run in one of two

+ * modes.  In the default mode the DRI will dynamically attempt to discover

+ * the best texture management policy for the running application.  In the

+ * other mode, the user (via some sort of as yet TBD mechanism) will select

+ * a texture management policy that is known to work well with the

+ * application.

+ */

+

+#include "main/imports.h"

+#include "main/macros.h"

+#include "main/simple_list.h"

+#include "texmem.h"

+

+

+static unsigned dummy_swap_counter;

+

+

+/**

+ * Calculate \f$\log_2\f$ of a value.  This is a particularly poor

+ * implementation of this function.  However, since system performance is in

+ * no way dependent on this function, the slowness of the implementation is

+ * irrelevent.

+ * 

+ * \param n Value whose \f$\log_2\f$ is to be calculated

+ */

+

+static GLuint

+driLog2( GLuint n )

+{

+   GLuint log2;

+

+   for ( log2 = 1 ; n > 1 ; log2++ ) {

+      n >>= 1;

+   }

+

+   return log2;

+}

+

+

+

+

+/**

+ * Determine if a texture is resident in textureable memory.  Depending on

+ * the driver, this may or may not be on-card memory.  It could be AGP memory

+ * or anyother type of memory from which the hardware can directly read

+ * texels.

+ * 

+ * This function is intended to be used as the \c IsTextureResident function

+ * in the device's \c dd_function_table.

+ * 

+ * \param ctx GL context pointer (currently unused)

+ * \param texObj Texture object to be tested

+ */

+

+GLboolean

+driIsTextureResident( struct gl_context * ctx, 

+		      struct gl_texture_object * texObj )

+{

+   driTextureObject * t;

+

+

+   t = (driTextureObject *) texObj->DriverData;

+   return( (t != NULL) && (t->memBlock != NULL) );

+}

+

+

+

+

+/**

+ * (Re)initialize the global circular LRU list.  The last element

+ * in the array (\a heap->nrRegions) is the sentinal.  Keeping it

+ * at the end of the array allows the other elements of the array

+ * to be addressed rationally when looking up objects at a particular

+ * location in texture memory.

+ * 

+ * \param heap Texture heap to be reset

+ */

+

+static void resetGlobalLRU( driTexHeap * heap )

+{

+   drmTextureRegionPtr list = heap->global_regions;

+   unsigned       sz = 1U << heap->logGranularity;

+   unsigned       i;

+

+   for (i = 0 ; (i+1) * sz <= heap->size ; i++) {

+      list[i].prev = i-1;

+      list[i].next = i+1;

+      list[i].age = 0;

+   }

+

+   i--;

+   list[0].prev = heap->nrRegions;

+   list[i].prev = i-1;

+   list[i].next = heap->nrRegions;

+   list[heap->nrRegions].prev = i;

+   list[heap->nrRegions].next = 0;

+   heap->global_age[0] = 0;

+}

+

+/**

+ * Print out debugging information about the local texture LRU.

+ *

+ * \param heap Texture heap to be printed

+ * \param callername Name of calling function

+ */

+static void printLocalLRU( driTexHeap * heap, const char *callername  )

+{

+   driTextureObject *t;

+   unsigned sz = 1U << heap->logGranularity;

+

+   fprintf( stderr, "%s in %s:\nLocal LRU, heap %d:\n", 

+	    __FUNCTION__, callername, heap->heapId );

+

+   foreach ( t, &heap->texture_objects ) {

+      if (!t->memBlock)

+	 continue;

+      if (!t->tObj) {

+	 fprintf( stderr, "Placeholder (%p) %d at 0x%x sz 0x%x\n",

+		  (void *)t,

+		  t->memBlock->ofs / sz,

+		  t->memBlock->ofs,

+		  t->memBlock->size );

+      } else {

+	 fprintf( stderr, "Texture (%p) at 0x%x sz 0x%x\n",

+		  (void *)t,

+		  t->memBlock->ofs,

+		  t->memBlock->size );

+      }

+   }

+   foreach ( t, heap->swapped_objects ) {

+      if (!t->tObj) {

+	 fprintf( stderr, "Swapped Placeholder (%p)\n", (void *)t );

+      } else {

+	 fprintf( stderr, "Swapped Texture (%p)\n", (void *)t );

+      }

+   }

+

+   fprintf( stderr, "\n" );

+}

+

+/**

+ * Print out debugging information about the global texture LRU.

+ *

+ * \param heap Texture heap to be printed

+ * \param callername Name of calling function

+ */

+static void printGlobalLRU( driTexHeap * heap, const char *callername )

+{

+   drmTextureRegionPtr list = heap->global_regions;

+   unsigned int i, j;

+

+   fprintf( stderr, "%s in %s:\nGlobal LRU, heap %d list %p:\n", 

+	    __FUNCTION__, callername, heap->heapId, (void *)list );

+

+   for ( i = 0, j = heap->nrRegions ; i < heap->nrRegions ; i++ ) {

+      fprintf( stderr, "list[%d] age %d next %d prev %d in_use %d\n",

+	       j, list[j].age, list[j].next, list[j].prev, list[j].in_use );

+      j = list[j].next;

+      if ( j == heap->nrRegions ) break;

+   }

+

+   if ( j != heap->nrRegions ) {

+      fprintf( stderr, "Loop detected in global LRU\n" );

+      for ( i = 0 ; i < heap->nrRegions ; i++ ) {

+	 fprintf( stderr, "list[%d] age %d next %d prev %d in_use %d\n",

+		  i, list[i].age, list[i].next, list[i].prev, list[i].in_use );

+      }

+   }

+

+   fprintf( stderr, "\n" );

+}

+

+

+/**

+ * Called by the client whenever it touches a local texture.

+ * 

+ * \param t Texture object that the client has accessed

+ */

+

+void driUpdateTextureLRU( driTextureObject * t )

+{

+   driTexHeap   * heap;

+   drmTextureRegionPtr list;

+   unsigned   shift;

+   unsigned   start;

+   unsigned   end;

+   unsigned   i;

+

+

+   heap = t->heap;

+   if ( heap != NULL ) {

+      shift = heap->logGranularity;

+      start = t->memBlock->ofs >> shift;

+      end = (t->memBlock->ofs + t->memBlock->size - 1) >> shift;

+

+

+      heap->local_age = ++heap->global_age[0];

+      list = heap->global_regions;

+

+

+      /* Update the context's local LRU 

+       */

+

+      move_to_head( & heap->texture_objects, t );

+

+

+      for (i = start ; i <= end ; i++) {

+	 list[i].age = heap->local_age;

+

+	 /* remove_from_list(i)

+	  */

+	 list[(unsigned)list[i].next].prev = list[i].prev;

+	 list[(unsigned)list[i].prev].next = list[i].next;

+

+	 /* insert_at_head(list, i)

+	  */

+	 list[i].prev = heap->nrRegions;

+	 list[i].next = list[heap->nrRegions].next;

+	 list[(unsigned)list[heap->nrRegions].next].prev = i;

+	 list[heap->nrRegions].next = i;

+      }

+

+      if ( 0 ) {

+	 printGlobalLRU( heap, __FUNCTION__ );

+	 printLocalLRU( heap, __FUNCTION__ );

+      }

+   }

+}

+

+

+

+

+/**

+ * Keep track of swapped out texture objects.

+ * 

+ * \param t Texture object to be "swapped" out of its texture heap

+ */

+

+void driSwapOutTextureObject( driTextureObject * t )

+{

+   unsigned   face;

+

+

+   if ( t->memBlock != NULL ) {

+      assert( t->heap != NULL );

+      mmFreeMem( t->memBlock );

+      t->memBlock = NULL;

+

+      if (t->timestamp > t->heap->timestamp)

+	 t->heap->timestamp = t->timestamp;

+

+      t->heap->texture_swaps[0]++;

+      move_to_tail( t->heap->swapped_objects, t );

+      t->heap = NULL;

+   }

+   else {

+      assert( t->heap == NULL );

+   }

+

+

+   for ( face = 0 ; face < 6 ; face++ ) {

+      t->dirty_images[face] = ~0;

+   }

+}

+

+

+

+

+/**

+ * Destroy hardware state associated with texture \a t.  Calls the

+ * \a destroy_texture_object method associated with the heap from which

+ * \a t was allocated.

+ * 

+ * \param t Texture object to be destroyed

+ */

+

+void driDestroyTextureObject( driTextureObject * t )

+{

+   driTexHeap * heap;

+

+

+   if ( 0 ) {

+      fprintf( stderr, "[%s:%d] freeing %p (tObj = %p, DriverData = %p)\n",

+	       __FILE__, __LINE__,

+	       (void *)t,

+	       (void *)((t != NULL) ? t->tObj : NULL),

+	       (void *)((t != NULL && t->tObj != NULL) ? t->tObj->DriverData : NULL ));

+   }

+

+   if ( t != NULL ) {

+      if ( t->memBlock ) {

+	 heap = t->heap;

+	 assert( heap != NULL );

+

+	 heap->texture_swaps[0]++;

+

+	 mmFreeMem( t->memBlock );

+	 t->memBlock = NULL;

+

+	 if (t->timestamp > t->heap->timestamp)

+	    t->heap->timestamp = t->timestamp;

+

+	 heap->destroy_texture_object( heap->driverContext, t );

+	 t->heap = NULL;

+      }

+

+      if ( t->tObj != NULL ) {

+	 assert( t->tObj->DriverData == t );

+	 t->tObj->DriverData = NULL;

+      }

+

+      remove_from_list( t );

+      FREE( t );

+   }

+

+   if ( 0 ) {

+      fprintf( stderr, "[%s:%d] done freeing %p\n", __FILE__, __LINE__, (void *)t );

+   }

+}

+

+

+

+

+/**

+ * Update the local heap's representation of texture memory based on

+ * data in the SAREA.  This is done each time it is detected that some other

+ * direct rendering client has held the lock.  This pertains to both our local

+ * textures and the textures belonging to other clients.  Keep track of other

+ * client's textures by pushing a placeholder texture onto the LRU list --

+ * these are denoted by \a tObj being \a NULL.

+ * 

+ * \param heap Heap whose state is to be updated

+ * \param offset Byte offset in the heap that has been stolen

+ * \param size Size, in bytes, of the stolen block

+ * \param in_use Non-zero if the block is pinned/reserved by the kernel

+ */

+

+static void driTexturesGone( driTexHeap * heap, int offset, int size, 

+			     int in_use )

+{

+   driTextureObject * t;

+   driTextureObject * tmp;

+

+

+   foreach_s ( t, tmp, & heap->texture_objects ) {

+      if ( (t->memBlock->ofs < (offset + size))

+	   && ((t->memBlock->ofs + t->memBlock->size) > offset) ) {

+	 /* It overlaps - kick it out.  If the texture object is just a

+	  * place holder, then destroy it all together.  Otherwise, mark

+	  * it as being swapped out.

+	  */

+

+	 if ( t->tObj != NULL ) {

+	    driSwapOutTextureObject( t );

+	 }

+	 else {

+	    driDestroyTextureObject( t );

+	 }

+      }

+   }

+

+

+   {

+      t = (driTextureObject *) CALLOC( heap->texture_object_size );

+      if ( t == NULL ) return;

+

+      t->memBlock = mmAllocMem( heap->memory_heap, size, 0, offset );

+      if ( t->memBlock == NULL ) {

+	 fprintf( stderr, "Couldn't alloc placeholder: heap %u sz %x ofs %x\n", heap->heapId,

+		  (int)size, (int)offset );

+	 mmDumpMemInfo( heap->memory_heap );

+	 FREE(t);

+	 return;

+      }

+      t->heap = heap;

+      if (in_use) 

+	 t->reserved = 1; 

+      insert_at_head( & heap->texture_objects, t );

+   }

+}

+

+

+

+

+/**

+ * Called by the client on lock contention to determine whether textures have

+ * been stolen.  If another client has modified a region in which we have

+ * textures, then we need to figure out which of our textures have been

+ * removed and update our global LRU.

+ * 

+ * \param heap Texture heap to be updated

+ */

+

+void driAgeTextures( driTexHeap * heap )

+{

+   drmTextureRegionPtr list = heap->global_regions;

+   unsigned       sz = 1U << (heap->logGranularity);

+   unsigned       i, nr = 0;

+

+

+   /* Have to go right round from the back to ensure stuff ends up

+    * LRU in the local list...  Fix with a cursor pointer.

+    */

+

+   for (i = list[heap->nrRegions].prev ; 

+	i != heap->nrRegions && nr < heap->nrRegions ; 

+	i = list[i].prev, nr++) {

+      /* If switching texturing schemes, then the SAREA might not have been

+       * properly cleared, so we need to reset the global texture LRU.

+       */

+

+      if ( (i * sz) > heap->size ) {

+	 nr = heap->nrRegions;

+	 break;

+      }

+

+      if (list[i].age > heap->local_age) 

+	  driTexturesGone( heap, i * sz, sz, list[i].in_use); 

+   }

+

+   /* Loop or uninitialized heap detected.  Reset.

+    */

+

+   if (nr == heap->nrRegions) {

+      driTexturesGone( heap, 0, heap->size, 0);

+      resetGlobalLRU( heap );

+   }

+

+   if ( 0 ) {

+      printGlobalLRU( heap, __FUNCTION__ );

+      printLocalLRU( heap, __FUNCTION__ );

+   }

+

+   heap->local_age = heap->global_age[0];

+}

+

+

+

+

+#define INDEX_ARRAY_SIZE 6 /* I'm not aware of driver with more than 2 heaps */

+

+/**

+ * Allocate memory from a texture heap to hold a texture object.  This

+ * routine will attempt to allocate memory for the texture from the heaps

+ * specified by \c heap_array in order.  That is, first it will try to

+ * allocate from \c heap_array[0], then \c heap_array[1], and so on.

+ *

+ * \param heap_array Array of pointers to texture heaps to use

+ * \param nr_heaps Number of heap pointer in \a heap_array

+ * \param t Texture object for which space is needed

+ * \return The ID of the heap from which memory was allocated, or -1 if

+ *         memory could not be allocated.

+ *

+ * \bug The replacement policy implemented by this function is horrible.

+ */

+

+

+int

+driAllocateTexture( driTexHeap * const * heap_array, unsigned nr_heaps,

+		    driTextureObject * t )

+{

+   driTexHeap       * heap;

+   driTextureObject * temp;

+   driTextureObject * cursor;

+   unsigned           id;

+

+

+   /* In case it already has texture space, initialize heap.  This also

+    * prevents GCC from issuing a warning that heap might be used

+    * uninitialized.

+    */

+

+   heap = t->heap;

+

+

+   /* Run through each of the existing heaps and try to allocate a buffer

+    * to hold the texture.

+    */

+

+   for ( id = 0 ; (t->memBlock == NULL) && (id < nr_heaps) ; id++ ) {

+      heap = heap_array[ id ];

+      if ( heap != NULL ) {

+	 t->memBlock = mmAllocMem( heap->memory_heap, t->totalSize, 

+				   heap->alignmentShift, 0 );

+      }

+   }

+

+

+   /* Kick textures out until the requested texture fits.

+    */

+

+   if ( t->memBlock == NULL ) {

+      unsigned index[INDEX_ARRAY_SIZE];

+      unsigned nrGoodHeaps = 0;

+

+      /* Trying to avoid dynamic memory allocation. If you have more

+       * heaps, increase INDEX_ARRAY_SIZE. I'm not aware of any

+       * drivers with more than 2 tex heaps. */

+      assert( nr_heaps < INDEX_ARRAY_SIZE );

+

+      /* Sort large enough heaps by duty. Insertion sort should be

+       * fast enough for such a short array. */

+      for ( id = 0 ; id < nr_heaps ; id++ ) {

+	 heap = heap_array[ id ];

+

+	 if ( heap != NULL && t->totalSize <= heap->size ) {

+	    unsigned j;

+

+	    for ( j = 0 ; j < nrGoodHeaps; j++ ) {

+	       if ( heap->duty > heap_array[ index[ j ] ]->duty )

+		  break;

+	    }

+

+	    if ( j < nrGoodHeaps ) {

+	       memmove( &index[ j+1 ], &index[ j ],

+			sizeof(index[ 0 ]) * (nrGoodHeaps - j) );

+	    }

+

+	    index[ j ] = id;

+

+	    nrGoodHeaps++;

+	 }

+      }

+

+      for ( id = 0 ; (t->memBlock == NULL) && (id < nrGoodHeaps) ; id++ ) {

+	 heap = heap_array[ index[ id ] ];

+

+	 for ( cursor = heap->texture_objects.prev, temp = cursor->prev;

+	       cursor != &heap->texture_objects ; 

+	       cursor = temp, temp = cursor->prev ) {

+	       

+	    /* The the LRU element.  If the texture is bound to one of

+	     * the texture units, then we cannot kick it out.

+	     */

+	    if ( cursor->bound || cursor->reserved ) {

+	       continue;

+	    }

+

+	    if ( cursor->memBlock )

+	       heap->duty -= cursor->memBlock->size;

+

+	    /* If this is a placeholder, there's no need to keep it */

+	    if (cursor->tObj)

+	       driSwapOutTextureObject( cursor );

+	    else

+	       driDestroyTextureObject( cursor );

+

+	    t->memBlock = mmAllocMem( heap->memory_heap, t->totalSize, 

+				      heap->alignmentShift, 0 );

+

+	    if (t->memBlock)

+	       break;

+	 }

+      }

+

+      /* Rebalance duties. If a heap kicked more data than its duty,

+       * then all other heaps get that amount multiplied with their

+       * relative weight added to their duty. The negative duty is

+       * reset to 0. In the end all heaps have a duty >= 0.

+       *

+       * CAUTION: we must not change the heap pointer here, because it

+       * is used below to update the texture object.

+       */

+      for ( id = 0 ; id < nr_heaps ; id++ )

+	 if ( heap_array[ id ] != NULL && heap_array[ id ]->duty < 0) {

+	    int duty = -heap_array[ id ]->duty;

+	    double weight = heap_array[ id ]->weight;

+	    unsigned j;

+

+	    for ( j = 0 ; j < nr_heaps ; j++ )

+	       if ( j != id && heap_array[ j ] != NULL ) {

+		  heap_array[ j ]->duty += (double) duty *

+		     heap_array[ j ]->weight / weight;

+	       }

+

+	    heap_array[ id ]->duty = 0;

+	 }

+   }

+

+

+   if ( t->memBlock != NULL ) {

+      /* id and heap->heapId may or may not be the same value here.

+       */

+

+      assert( heap != NULL );

+      assert( (t->heap == NULL) || (t->heap == heap) );

+

+      t->heap = heap;

+      return heap->heapId;

+   }

+   else {

+      assert( t->heap == NULL );

+

+      fprintf( stderr, "[%s:%d] unable to allocate texture\n",

+	       __FUNCTION__, __LINE__ );

+      return -1;

+   }

+}

+

+

+

+

+

+

+/**

+ * Set the location where the texture-swap counter is stored.

+ */

+

+void

+driSetTextureSwapCounterLocation( driTexHeap * heap, unsigned * counter )

+{

+   heap->texture_swaps = (counter == NULL) ? & dummy_swap_counter : counter;

+}

+

+

+

+

+/**

+ * Create a new heap for texture data.

+ * 

+ * \param heap_id             Device-dependent heap identifier.  This value

+ *                            will returned by driAllocateTexture when memory

+ *                            is allocated from this heap.

+ * \param context             Device-dependent driver context.  This is

+ *                            supplied as the first parameter to the

+ *                            \c destroy_tex_obj function.

+ * \param size                Size, in bytes, of the texture region

+ * \param alignmentShift      Alignment requirement for textures.  If textures 

+ *                            must be allocated on a 4096 byte boundry, this

+ *                            would be 12.

+ * \param nr_regions          Number of regions into which this texture space

+ *                            should be partitioned

+ * \param global_regions      Array of \c drmTextureRegion structures in the SAREA

+ * \param global_age          Pointer to the global texture age in the SAREA

+ * \param swapped_objects     Pointer to the list of texture objects that are

+ *                            not in texture memory (i.e., have been swapped

+ *                            out).

+ * \param texture_object_size Size, in bytes, of a device-dependent texture

+ *                            object

+ * \param destroy_tex_obj     Function used to destroy a device-dependent

+ *                            texture object

+ *

+ * \sa driDestroyTextureHeap

+ */

+

+driTexHeap *

+driCreateTextureHeap( unsigned heap_id, void * context, unsigned size,

+		      unsigned alignmentShift, unsigned nr_regions,

+		      drmTextureRegionPtr global_regions, unsigned * global_age,

+		      driTextureObject * swapped_objects, 

+		      unsigned texture_object_size,

+		      destroy_texture_object_t * destroy_tex_obj

+		    )

+{

+   driTexHeap * heap;

+   unsigned     l;

+    

+    

+   if ( 0 )

+       fprintf( stderr, "%s( %u, %p, %u, %u, %u )\n",

+		__FUNCTION__,

+		heap_id, (void *)context, size, alignmentShift, nr_regions );

+

+   heap = (driTexHeap *) CALLOC( sizeof( driTexHeap ) );

+   if ( heap != NULL ) {

+      l = driLog2( (size - 1) / nr_regions );

+      if ( l < alignmentShift )

+      {

+	 l = alignmentShift;

+      }

+

+      heap->logGranularity = l;

+      heap->size = size & ~((1L << l) - 1);

+

+      heap->memory_heap = mmInit( 0, heap->size );

+      if ( heap->memory_heap != NULL ) {

+	 heap->heapId = heap_id;

+	 heap->driverContext = context;

+

+	 heap->alignmentShift = alignmentShift;

+	 heap->nrRegions = nr_regions;

+	 heap->global_regions = global_regions;

+	 heap->global_age = global_age;

+	 heap->swapped_objects = swapped_objects;

+	 heap->texture_object_size = texture_object_size;

+	 heap->destroy_texture_object = destroy_tex_obj;

+

+	 /* Force global heap init */

+	 if (heap->global_age[0] == 0)

+	     heap->local_age = ~0;

+	 else

+	     heap->local_age = 0;

+

+	 make_empty_list( & heap->texture_objects );

+	 driSetTextureSwapCounterLocation( heap, NULL );

+

+	 heap->weight = heap->size;

+	 heap->duty = 0;

+      }

+      else {

+	 FREE( heap );

+	 heap = NULL;

+      }

+   }

+

+

+   if ( 0 )

+       fprintf( stderr, "%s returning %p\n", __FUNCTION__, (void *)heap );

+

+   return heap;

+}

+

+

+

+

+/** Destroys a texture heap

+ * 

+ * \param heap Texture heap to be destroyed

+ */

+

+void

+driDestroyTextureHeap( driTexHeap * heap )

+{

+   driTextureObject * t;

+   driTextureObject * temp;

+

+

+   if ( heap != NULL ) {

+      foreach_s( t, temp, & heap->texture_objects ) {

+	 driDestroyTextureObject( t );

+      }

+      foreach_s( t, temp, heap->swapped_objects ) {

+	 driDestroyTextureObject( t );

+      }

+

+      mmDestroy( heap->memory_heap );

+      FREE( heap );

+   }

+}

+

+

+

+

+/****************************************************************************/

+/**

+ * Determine how many texels (including all mipmap levels) would be required

+ * for a texture map of size \f$2^^\c base_size_log2\f$ would require.

+ *

+ * \param base_size_log2 \f$log_2\f$ of the size of a side of the texture

+ * \param dimensions Number of dimensions of the texture.  Either 2 or 3.

+ * \param faces Number of faces of the texture.  Either 1 or 6 (for cube maps).

+ * \return Number of texels

+ */

+

+static unsigned

+texels_this_map_size( int base_size_log2, unsigned dimensions, unsigned faces )

+{

+   unsigned  texels;

+

+

+   assert( (faces == 1) || (faces == 6) );

+   assert( (dimensions == 2) || (dimensions == 3) );

+

+   texels = 0;

+   if ( base_size_log2 >= 0 ) {

+      texels = (1U << (dimensions * base_size_log2));

+

+      /* See http://www.mail-archive.com/dri-devel@lists.sourceforge.net/msg03636.html

+       * for the complete explaination of why this formulation is used.

+       * Basically, the smaller mipmap levels sum to 0.333 the size of the

+       * level 0 map.  The total size is therefore the size of the map

+       * multipled by 1.333.  The +2 is there to round up.

+       */

+

+      texels = (texels * 4 * faces + 2) / 3;

+   }

+

+   return texels;

+}

+

+

+

+

+struct maps_per_heap {

+   unsigned  c[32];

+};

+

+static void

+fill_in_maximums( driTexHeap * const * heaps, unsigned nr_heaps,

+		  unsigned max_bytes_per_texel, unsigned max_size,

+		  unsigned mipmaps_at_once, unsigned dimensions,

+		  unsigned faces, struct maps_per_heap * max_textures )

+{

+   unsigned   heap;

+   unsigned   log2_size;

+   unsigned   mask;

+

+

+   /* Determine how many textures of each size can be stored in each

+    * texture heap.

+    */

+

+   for ( heap = 0 ; heap < nr_heaps ; heap++ ) {

+      if ( heaps[ heap ] == NULL ) {

+	 (void) memset( max_textures[ heap ].c, 0, 

+			sizeof( max_textures[ heap ].c ) );

+	 continue;

+      }

+

+      mask = (1U << heaps[ heap ]->logGranularity) - 1;

+

+      if ( 0 ) {

+	 fprintf( stderr, "[%s:%d] heap[%u] = %u bytes, mask = 0x%08x\n",

+		  __FILE__, __LINE__,

+		  heap, heaps[ heap ]->size, mask );

+      }

+

+      for ( log2_size = max_size ; log2_size > 0 ; log2_size-- ) {

+	 unsigned   total;

+

+

+	 /* Determine the total number of bytes required by a texture of

+	  * size log2_size.

+	  */

+

+	 total = texels_this_map_size( log2_size, dimensions, faces )

+	     - texels_this_map_size( log2_size - mipmaps_at_once,

+				     dimensions, faces );

+	 total *= max_bytes_per_texel;

+	 total = (total + mask) & ~mask;

+

+	 /* The number of textures of a given size that will fit in a heap

+	  * is equal to the size of the heap divided by the size of the

+	  * texture.

+	  */

+

+	 max_textures[ heap ].c[ log2_size ] = heaps[ heap ]->size / total;

+

+	 if ( 0 ) {

+	    fprintf( stderr, "[%s:%d] max_textures[%u].c[%02u] "

+		     "= 0x%08x / 0x%08x "

+		     "= %u (%u)\n",

+		     __FILE__, __LINE__,

+		     heap, log2_size,

+		     heaps[ heap ]->size, total,

+		     heaps[ heap ]->size / total,

+		     max_textures[ heap ].c[ log2_size ] );

+	 }

+      }

+   }

+}

+

+

+static unsigned

+get_max_size( unsigned nr_heaps,

+	      unsigned texture_units,

+	      unsigned max_size,

+	      int all_textures_one_heap,

+	      struct maps_per_heap * max_textures )

+{

+   unsigned   heap;

+   unsigned   log2_size;

+

+

+   /* Determine the largest texture size such that a texture of that size

+    * can be bound to each texture unit at the same time.  Some hardware

+    * may require that all textures be in the same texture heap for

+    * multitexturing.

+    */

+

+   for ( log2_size = max_size ; log2_size > 0 ; log2_size-- ) {

+      unsigned   total = 0;

+

+      for ( heap = 0 ; heap < nr_heaps ; heap++ )

+      {

+	 total += max_textures[ heap ].c[ log2_size ];

+

+	 if ( 0 ) {

+	    fprintf( stderr, "[%s:%d] max_textures[%u].c[%02u] = %u, "

+		     "total = %u\n", __FILE__, __LINE__, heap, log2_size,

+		     max_textures[ heap ].c[ log2_size ], total );

+	 }

+

+	 if ( (max_textures[ heap ].c[ log2_size ] >= texture_units)

+	      || (!all_textures_one_heap && (total >= texture_units)) ) {

+	    /* The number of mipmap levels is the log-base-2 of the

+	     * maximum texture size plus 1.  If the maximum texture size

+	     * is 1x1, the log-base-2 is 0 and 1 mipmap level (the base

+	     * level) is available.

+	     */

+

+	    return log2_size + 1;

+	 }

+      }

+   }

+

+   /* This should NEVER happen.  It should always be possible to have at

+    * *least* a 1x1 texture in memory!

+    */

+   assert( log2_size != 0 );

+   return 0;

+}

+

+#define SET_MAX(f,v) \

+    do { if ( max_sizes[v] != 0 ) { limits-> f = max_sizes[v]; } } while( 0 )

+

+#define SET_MAX_RECT(f,v) \

+    do { if ( max_sizes[v] != 0 ) { limits-> f = 1 << (max_sizes[v] - 1); } } while( 0 )

+

+

+/**

+ * Given the amount of texture memory, the number of texture units, and the

+ * maximum size of a texel, calculate the maximum texture size the driver can

+ * advertise.

+ * 

+ * \param heaps Texture heaps for this card

+ * \param nr_heap Number of texture heaps

+ * \param limits OpenGL contants.  MaxTextureUnits must be set.

+ * \param max_bytes_per_texel Maximum size of a single texel, in bytes

+ * \param max_2D_size \f$\log_2\f$ of the maximum 2D texture size (i.e.,

+ *     1024x1024 textures, this would be 10)

+ * \param max_3D_size \f$\log_2\f$ of the maximum 3D texture size (i.e.,

+ *     1024x1024x1024 textures, this would be 10)

+ * \param max_cube_size \f$\log_2\f$ of the maximum cube texture size (i.e.,

+ *     1024x1024 textures, this would be 10)

+ * \param max_rect_size \f$\log_2\f$ of the maximum texture rectangle size

+ *     (i.e., 1024x1024 textures, this would be 10).  This is a power-of-2

+ *     even though texture rectangles need not be a power-of-2.

+ * \param mipmaps_at_once Total number of mipmaps that can be used

+ *     at one time.  For most hardware this will be \f$\c max_size + 1\f$.

+ *     For hardware that does not support mipmapping, this will be 1.

+ * \param all_textures_one_heap True if the hardware requires that all

+ *     textures be in a single texture heap for multitexturing.

+ * \param allow_larger_textures 0 conservative, 1 calculate limits

+ *     so at least one worst-case texture can fit, 2 just use hw limits.

+ */

+

+void

+driCalculateMaxTextureLevels( driTexHeap * const * heaps,

+			      unsigned nr_heaps,

+			      struct gl_constants * limits,

+			      unsigned max_bytes_per_texel,

+			      unsigned max_2D_size,

+			      unsigned max_3D_size,

+			      unsigned max_cube_size,

+			      unsigned max_rect_size,

+			      unsigned mipmaps_at_once,

+			      int all_textures_one_heap,

+			      int allow_larger_textures )

+{

+   struct maps_per_heap  max_textures[8];

+   unsigned         i;

+   const unsigned   dimensions[4] = { 2, 3, 2, 2 };

+   const unsigned   faces[4]      = { 1, 1, 6, 1 };

+   unsigned         max_sizes[4];

+   unsigned         mipmaps[4];

+

+

+   max_sizes[0] = max_2D_size;

+   max_sizes[1] = max_3D_size;

+   max_sizes[2] = max_cube_size;

+   max_sizes[3] = max_rect_size;

+

+   mipmaps[0] = mipmaps_at_once;

+   mipmaps[1] = mipmaps_at_once;

+   mipmaps[2] = mipmaps_at_once;

+   mipmaps[3] = 1;

+

+

+   /* Calculate the maximum number of texture levels in two passes.  The

+    * first pass determines how many textures of each power-of-two size

+    * (including all mipmap levels for that size) can fit in each texture

+    * heap.  The second pass finds the largest texture size that allows

+    * a texture of that size to be bound to every texture unit.

+    */

+

+   for ( i = 0 ; i < 4 ; i++ ) {

+      if ( (allow_larger_textures != 2) && (max_sizes[ i ] != 0) ) {

+	 fill_in_maximums( heaps, nr_heaps, max_bytes_per_texel,

+			   max_sizes[ i ], mipmaps[ i ],

+			   dimensions[ i ], faces[ i ],

+			   max_textures );

+

+	 max_sizes[ i ] = get_max_size( nr_heaps,

+					allow_larger_textures == 1 ?

+					1 : limits->MaxTextureUnits,

+					max_sizes[ i ],

+					all_textures_one_heap,

+					max_textures );

+      }

+      else if (max_sizes[ i ] != 0) {

+	 max_sizes[ i ] += 1;

+      }

+   }

+

+   SET_MAX( MaxTextureLevels,        0 );

+   SET_MAX( Max3DTextureLevels,      1 );

+   SET_MAX( MaxCubeTextureLevels,    2 );

+   SET_MAX_RECT( MaxTextureRectSize, 3 );

+}

+

+

+

+

+/**

+ * Perform initial binding of default textures objects on a per unit, per

+ * texture target basis.

+ *

+ * \param ctx Current OpenGL context

+ * \param swapped List of swapped-out textures

+ * \param targets Bit-mask of value texture targets

+ */

+

+void driInitTextureObjects( struct gl_context *ctx, driTextureObject * swapped,

+			    GLuint targets )

+{

+   struct gl_texture_object *texObj;

+   GLuint tmp = ctx->Texture.CurrentUnit;

+   unsigned   i;

+

+

+   for ( i = 0 ; i < ctx->Const.MaxTextureUnits ; i++ ) {

+      ctx->Texture.CurrentUnit = i;

+

+      if ( (targets & DRI_TEXMGR_DO_TEXTURE_1D) != 0 ) {

+	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_1D_INDEX];

+	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_1D, texObj );

+	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );

+      }

+

+      if ( (targets & DRI_TEXMGR_DO_TEXTURE_2D) != 0 ) {

+	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_2D_INDEX];

+	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_2D, texObj );

+	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );

+      }

+

+      if ( (targets & DRI_TEXMGR_DO_TEXTURE_3D) != 0 ) {

+	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_3D_INDEX];

+	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_3D, texObj );

+	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );

+      }

+

+      if ( (targets & DRI_TEXMGR_DO_TEXTURE_CUBE) != 0 ) {

+	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_CUBE_INDEX];

+	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_CUBE_MAP_ARB, texObj );

+	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );

+      }

+

+      if ( (targets & DRI_TEXMGR_DO_TEXTURE_RECT) != 0 ) {

+	 texObj = ctx->Texture.Unit[i].CurrentTex[TEXTURE_RECT_INDEX];

+	 ctx->Driver.BindTexture( ctx, GL_TEXTURE_RECTANGLE_NV, texObj );

+	 move_to_tail( swapped, (driTextureObject *) texObj->DriverData );

+      }

+   }

+

+   ctx->Texture.CurrentUnit = tmp;

+}

+

+

+

+

+/**

+ * Verify that the specified texture is in the specificed heap.

+ * 

+ * \param tex   Texture to be tested.

+ * \param heap  Texture memory heap to be tested.

+ * \return True if the texture is in the heap, false otherwise.

+ */

+

+static GLboolean

+check_in_heap( const driTextureObject * tex, const driTexHeap * heap )

+{

+#if 1

+   return tex->heap == heap;

+#else

+   driTextureObject * curr;

+

+   foreach( curr, & heap->texture_objects ) {

+      if ( curr == tex ) {

+	 break;

+      }

+   }

+

+   return curr == tex;

+#endif

+}

+

+

+

+/****************************************************************************/

+/**

+ * Validate the consistency of a set of texture heaps.

+ * Original version by Keith Whitwell in r200/r200_sanity.c.

+ */

+

+GLboolean

+driValidateTextureHeaps( driTexHeap * const * texture_heaps,

+			 unsigned nr_heaps, const driTextureObject * swapped )

+{

+   driTextureObject *t;

+   unsigned  i;

+

+   for ( i = 0 ; i < nr_heaps ; i++ ) {

+      int last_end = 0;

+      unsigned textures_in_heap = 0;

+      unsigned blocks_in_mempool = 0;

+      const driTexHeap * heap = texture_heaps[i];

+      const struct mem_block *p = heap->memory_heap;

+

+      /* Check each texture object has a MemBlock, and is linked into

+       * the correct heap.  

+       *

+       * Check the texobj base address corresponds to the MemBlock

+       * range.  Check the texobj size (recalculate?) fits within

+       * the MemBlock.

+       *

+       * Count the number of texobj's using this heap.

+       */

+

+      foreach ( t, &heap->texture_objects ) {

+	 if ( !check_in_heap( t, heap ) ) {

+	    fprintf( stderr, "%s memory block for texture object @ %p not "

+		     "found in heap #%d\n",

+		     __FUNCTION__, (void *)t, i );

+	    return GL_FALSE;

+	 }

+

+

+	 if ( t->totalSize > t->memBlock->size ) {

+	    fprintf( stderr, "%s: Memory block for texture object @ %p is "

+		     "only %u bytes, but %u are required\n",

+		     __FUNCTION__, (void *)t, t->totalSize, t->memBlock->size );

+	    return GL_FALSE;

+	 }

+

+	 textures_in_heap++;

+      }

+

+      /* Validate the contents of the heap:

+       *   - Ordering

+       *   - Overlaps

+       *   - Bounds

+       */

+

+      while ( p != NULL ) {

+	 if (p->reserved) {

+	    fprintf( stderr, "%s: Block (%08x,%x), is reserved?!\n",

+		     __FUNCTION__, p->ofs, p->size );

+	    return GL_FALSE;

+	 }

+

+	 if (p->ofs != last_end) {

+	    fprintf( stderr, "%s: blocks_in_mempool = %d, last_end = %d, p->ofs = %d\n",

+		     __FUNCTION__, blocks_in_mempool, last_end, p->ofs );

+	    return GL_FALSE;

+	 }

+

+	 if (!p->reserved && !p->free) {

+	    blocks_in_mempool++;

+	 }

+

+	 last_end = p->ofs + p->size;

+	 p = p->next;

+      }

+

+      if (textures_in_heap != blocks_in_mempool) {

+	 fprintf( stderr, "%s: Different number of textures objects (%u) and "

+		  "inuse memory blocks (%u)\n", 

+		  __FUNCTION__, textures_in_heap, blocks_in_mempool );

+	 return GL_FALSE;

+      }

+

+#if 0

+      fprintf( stderr, "%s: textures_in_heap = %u\n", 

+	       __FUNCTION__, textures_in_heap );

+#endif

+   }

+

+

+   /* Check swapped texobj's have zero memblocks

+    */

+   i = 0;

+   foreach ( t, swapped ) {

+      if ( t->memBlock != NULL ) {

+	 fprintf( stderr, "%s: Swapped texobj %p has non-NULL memblock %p\n",

+		  __FUNCTION__, (void *)t, (void *)t->memBlock );

+	 return GL_FALSE;

+      }

+      i++;

+   }

+

+#if 0

+   fprintf( stderr, "%s: swapped texture count = %u\n", __FUNCTION__, i );

+#endif

+

+   return GL_TRUE;

+}

+

+

+

+

+/****************************************************************************/

+/**

+ * Compute which mipmap levels that really need to be sent to the hardware.

+ * This depends on the base image size, GL_TEXTURE_MIN_LOD,

+ * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.

+ */

+

+void

+driCalculateTextureFirstLastLevel( driTextureObject * t )

+{

+   struct gl_texture_object * const tObj = t->tObj;

+   const struct gl_texture_image * const baseImage =

+       tObj->Image[0][tObj->BaseLevel];

+

+   /* These must be signed values.  MinLod and MaxLod can be negative numbers,

+    * and having firstLevel and lastLevel as signed prevents the need for

+    * extra sign checks.

+    */

+   int   firstLevel;

+   int   lastLevel;

+

+   /* Yes, this looks overly complicated, but it's all needed.

+    */

+

+   switch (tObj->Target) {

+   case GL_TEXTURE_1D:

+   case GL_TEXTURE_2D:

+   case GL_TEXTURE_3D:

+   case GL_TEXTURE_CUBE_MAP:

+      if (tObj->Sampler.MinFilter == GL_NEAREST ||

+          tObj->Sampler.MinFilter == GL_LINEAR) {

+         /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL.

+          */

+

+         firstLevel = lastLevel = tObj->BaseLevel;

+      }

+      else {

+	 firstLevel = tObj->BaseLevel + (GLint)(tObj->Sampler.MinLod + 0.5);

+	 firstLevel = MAX2(firstLevel, tObj->BaseLevel);

+	 firstLevel = MIN2(firstLevel, tObj->BaseLevel + baseImage->MaxLog2);

+	 lastLevel = tObj->BaseLevel + (GLint)(tObj->Sampler.MaxLod + 0.5);

+	 lastLevel = MAX2(lastLevel, t->tObj->BaseLevel);

+	 lastLevel = MIN2(lastLevel, t->tObj->BaseLevel + baseImage->MaxLog2);

+	 lastLevel = MIN2(lastLevel, t->tObj->MaxLevel);

+	 lastLevel = MAX2(firstLevel, lastLevel); /* need at least one level */

+      }

+      break;

+   case GL_TEXTURE_RECTANGLE_NV:

+   case GL_TEXTURE_4D_SGIS:

+      firstLevel = lastLevel = 0;

+      break;

+   default:

+      return;

+   }

+

+   /* save these values */

+   t->firstLevel = firstLevel;

+   t->lastLevel = lastLevel;

+}

+

+

+

+

+/**

+ * \name DRI texture formats.  These vars are initialized to either the

+ * big- or little-endian Mesa formats.

+ */

+/*@{*/

+gl_format _dri_texformat_rgba8888 = MESA_FORMAT_NONE;

+gl_format _dri_texformat_argb8888 = MESA_FORMAT_NONE;

+gl_format _dri_texformat_rgb565 = MESA_FORMAT_NONE;

+gl_format _dri_texformat_argb4444 = MESA_FORMAT_NONE;

+gl_format _dri_texformat_argb1555 = MESA_FORMAT_NONE;

+gl_format _dri_texformat_al88 = MESA_FORMAT_NONE;

+gl_format _dri_texformat_a8 = MESA_FORMAT_A8;

+gl_format _dri_texformat_ci8 = MESA_FORMAT_CI8;

+gl_format _dri_texformat_i8 = MESA_FORMAT_I8;

+gl_format _dri_texformat_l8 = MESA_FORMAT_L8;

+/*@}*/

+

+

+/**

+ * Initialize _dri_texformat_* vars according to whether we're on

+ * a big or little endian system.

+ */

+void

+driInitTextureFormats(void)

+{

+   if (_mesa_little_endian()) {

+      _dri_texformat_rgba8888	= MESA_FORMAT_RGBA8888;

+      _dri_texformat_argb8888	= MESA_FORMAT_ARGB8888;

+      _dri_texformat_rgb565	= MESA_FORMAT_RGB565;

+      _dri_texformat_argb4444	= MESA_FORMAT_ARGB4444;

+      _dri_texformat_argb1555	= MESA_FORMAT_ARGB1555;

+      _dri_texformat_al88	= MESA_FORMAT_AL88;

+   }

+   else {

+      _dri_texformat_rgba8888	= MESA_FORMAT_RGBA8888_REV;

+      _dri_texformat_argb8888	= MESA_FORMAT_ARGB8888_REV;

+      _dri_texformat_rgb565	= MESA_FORMAT_RGB565_REV;

+      _dri_texformat_argb4444	= MESA_FORMAT_ARGB4444_REV;

+      _dri_texformat_argb1555	= MESA_FORMAT_ARGB1555_REV;

+      _dri_texformat_al88	= MESA_FORMAT_AL88_REV;

+   }

+}

diff --git a/mesalib/src/mesa/drivers/dri/common/utils.c b/mesalib/src/mesa/drivers/dri/common/utils.c
index 539296d1a..2df2386ff 100644
--- a/mesalib/src/mesa/drivers/dri/common/utils.c
+++ b/mesalib/src/mesa/drivers/dri/common/utils.c
@@ -218,7 +218,9 @@ void driInitExtensions( struct gl_context * ctx,
       /* Map the static functions.  Together with those mapped by remap

        * table, this should cover everything mesa core knows.

        */

+#ifdef _GLAPI_USE_REMAP_TABLE

       _mesa_map_static_functions();

+#endif

       return;

    }

 

diff --git a/mesalib/src/mesa/drivers/dri/swrast/swrast.c b/mesalib/src/mesa/drivers/dri/swrast/swrast.c
index 719b406ec..e6d1ab741 100644
--- a/mesalib/src/mesa/drivers/dri/swrast/swrast.c
+++ b/mesalib/src/mesa/drivers/dri/swrast/swrast.c
@@ -1,806 +1,811 @@
-/*
- * Copyright 2008, 2010 George Sapountzis <gsapountzis@gmail.com>
- *
- * 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.
- */
-
-/*
- * DRI software rasterizer
- *
- * This is the mesa swrast module packaged into a DRI driver structure.
- *
- * The front-buffer is allocated by the loader. The loader provides read/write
- * callbacks for access to the front-buffer. The driver uses a scratch row for
- * front-buffer rendering to avoid repeated calls to the loader.
- *
- * The back-buffer is allocated by the driver and is private.
- */
-
-#include "main/context.h"
-#include "main/extensions.h"
-#include "main/formats.h"
-#include "main/framebuffer.h"
-#include "main/imports.h"
-#include "main/renderbuffer.h"
-#include "swrast/swrast.h"
-#include "swrast_setup/swrast_setup.h"
-#include "tnl/tnl.h"
-#include "tnl/t_context.h"
-#include "tnl/t_pipeline.h"
-#include "vbo/vbo.h"
-#include "drivers/common/driverfuncs.h"
-#include "drivers/common/meta.h"
-#include "utils.h"
-
-#include "main/teximage.h"
-#include "main/texformat.h"
-#include "main/texstate.h"
-
-#include "swrast_priv.h"
-
-
-/**
- * Screen and config-related functions
- */
-
-static void swrastSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
-				GLint texture_format, __DRIdrawable *dPriv)
-{
-    struct dri_context *dri_ctx;
-    int x, y, w, h;
-    __DRIscreen *sPriv = dPriv->driScreenPriv;
-    struct gl_texture_unit *texUnit;
-    struct gl_texture_object *texObj;
-    struct gl_texture_image *texImage;
-    uint32_t internalFormat;
-    gl_format texFormat;
-
-    dri_ctx = pDRICtx->driverPrivate;
-
-    internalFormat = (texture_format == __DRI_TEXTURE_FORMAT_RGB ? 3 : 4);
-
-    texUnit = _mesa_get_current_tex_unit(&dri_ctx->Base);
-    texObj = _mesa_select_tex_object(&dri_ctx->Base, texUnit, target);
-    texImage = _mesa_get_tex_image(&dri_ctx->Base, texObj, target, 0);
-
-    _mesa_lock_texture(&dri_ctx->Base, texObj);
-
-    sPriv->swrast_loader->getDrawableInfo(dPriv, &x, &y, &w, &h, dPriv->loaderPrivate);
-
-    if (texture_format == __DRI_TEXTURE_FORMAT_RGB)
-	texFormat = MESA_FORMAT_XRGB8888;
-    else
-	texFormat = MESA_FORMAT_ARGB8888;
-
-    _mesa_init_teximage_fields(&dri_ctx->Base, target, texImage,
-			       w, h, 1, 0, internalFormat, texFormat);
-
-    sPriv->swrast_loader->getImage(dPriv, x, y, w, h, (char *)texImage->Data,
-				   dPriv->loaderPrivate);
-
-    _mesa_unlock_texture(&dri_ctx->Base, texObj);
-}
-
-static void swrastSetTexBuffer(__DRIcontext *pDRICtx, GLint target,
-			       __DRIdrawable *dPriv)
-{
-    swrastSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
-}
-
-static const __DRItexBufferExtension swrastTexBufferExtension = {
-    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
-    swrastSetTexBuffer,
-    swrastSetTexBuffer2,
-};
-
-static const __DRIextension *dri_screen_extensions[] = {
-    &swrastTexBufferExtension.base,
-    NULL
-};
-
-static __DRIconfig **
-swrastFillInModes(__DRIscreen *psp,
-		  unsigned pixel_bits, unsigned depth_bits,
-		  unsigned stencil_bits, GLboolean have_back_buffer)
-{
-    __DRIconfig **configs;
-    unsigned depth_buffer_factor;
-    unsigned back_buffer_factor;
-    GLenum fb_format;
-    GLenum fb_type;
-
-    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
-     * support pageflipping at all.
-     */
-    static const GLenum back_buffer_modes[] = {
-	GLX_NONE, GLX_SWAP_UNDEFINED_OML
-    };
-
-    uint8_t depth_bits_array[4];
-    uint8_t stencil_bits_array[4];
-    uint8_t msaa_samples_array[1];
-
-    depth_bits_array[0] = 0;
-    depth_bits_array[1] = 0;
-    depth_bits_array[2] = depth_bits;
-    depth_bits_array[3] = depth_bits;
-
-    /* Just like with the accumulation buffer, always provide some modes
-     * with a stencil buffer.
-     */
-    stencil_bits_array[0] = 0;
-    stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
-    stencil_bits_array[2] = 0;
-    stencil_bits_array[3] = (stencil_bits == 0) ? 8 : stencil_bits;
-
-    msaa_samples_array[0] = 0;
-
-    depth_buffer_factor = 4;
-    back_buffer_factor = 2;
-
-    switch (pixel_bits) {
-    case 8:
-	fb_format = GL_RGB;
-	fb_type = GL_UNSIGNED_BYTE_2_3_3_REV;
-	break;
-    case 16:
-	fb_format = GL_RGB;
-	fb_type = GL_UNSIGNED_SHORT_5_6_5;
-	break;
-    case 24:
-	fb_format = GL_BGR;
-	fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
-	break;
-    case 32:
-	fb_format = GL_BGRA;
-	fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
-	break;
-    default:
-	fprintf(stderr, "[%s:%u] bad depth %d\n", __func__, __LINE__,
-		pixel_bits);
-	return NULL;
-    }
-
-    configs = driCreateConfigs(fb_format, fb_type,
-			       depth_bits_array, stencil_bits_array,
-			       depth_buffer_factor, back_buffer_modes,
-			       back_buffer_factor, msaa_samples_array, 1,
-			       GL_TRUE);
-    if (configs == NULL) {
-	fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
-		__LINE__);
-	return NULL;
-    }
-
-    return configs;
-}
-
-static const __DRIconfig **
-dri_init_screen(__DRIscreen * psp)
-{
-    __DRIconfig **configs8, **configs16, **configs24, **configs32;
-
-    TRACE;
-
-    psp->extensions = dri_screen_extensions;
-
-    configs8  = swrastFillInModes(psp,  8,  8, 0, 1);
-    configs16 = swrastFillInModes(psp, 16, 16, 0, 1);
-    configs24 = swrastFillInModes(psp, 24, 24, 8, 1);
-    configs32 = swrastFillInModes(psp, 32, 24, 8, 1);
-
-    configs16 = driConcatConfigs(configs8, configs16);
-    configs24 = driConcatConfigs(configs16, configs24);
-    configs32 = driConcatConfigs(configs24, configs32);
-
-    return (const __DRIconfig **)configs32;
-}
-
-static void
-dri_destroy_screen(__DRIscreen * sPriv)
-{
-    TRACE;
-}
-
-
-/**
- * Framebuffer and renderbuffer-related functions.
- */
-
-static GLuint
-choose_pixel_format(const struct gl_config *v)
-{
-    int depth = v->rgbBits;
-
-    if (depth == 32
-	&& v->redMask   == 0xff0000
-	&& v->greenMask == 0x00ff00
-	&& v->blueMask  == 0x0000ff)
-	return PF_A8R8G8B8;
-    else if (depth == 24
-	     && v->redMask   == 0xff0000
-	     && v->greenMask == 0x00ff00
-	     && v->blueMask  == 0x0000ff)
-	return PF_X8R8G8B8;
-    else if (depth == 16
-	     && v->redMask   == 0xf800
-	     && v->greenMask == 0x07e0
-	     && v->blueMask  == 0x001f)
-	return PF_R5G6B5;
-    else if (depth == 8
-	     && v->redMask   == 0x07
-	     && v->greenMask == 0x38
-	     && v->blueMask  == 0xc0)
-	return PF_R3G3B2;
-
-    _mesa_problem( NULL, "unexpected format in %s", __FUNCTION__ );
-    return 0;
-}
-
-static void
-swrast_delete_renderbuffer(struct gl_renderbuffer *rb)
-{
-    TRACE;
-
-    free(rb->Data);
-    free(rb);
-}
-
-/* see bytes_per_line in libGL */
-static INLINE int
-bytes_per_line(unsigned pitch_bits, unsigned mul)
-{
-   unsigned mask = mul - 1;
-
-   return ((pitch_bits + mask) & ~mask) / 8;
-}
-
-static GLboolean
-swrast_alloc_front_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
-			   GLenum internalFormat, GLuint width, GLuint height)
-{
-    struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
-
-    TRACE;
-
-    rb->Data = NULL;
-    rb->Width = width;
-    rb->Height = height;
-
-    xrb->pitch = bytes_per_line(width * xrb->bpp, 32);
-
-    return GL_TRUE;
-}
-
-static GLboolean
-swrast_alloc_back_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
-			  GLenum internalFormat, GLuint width, GLuint height)
-{
-    struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);
-
-    TRACE;
-
-    free(rb->Data);
-
-    swrast_alloc_front_storage(ctx, rb, internalFormat, width, height);
-
-    rb->Data = malloc(height * xrb->pitch);
-
-    return GL_TRUE;
-}
-
-static struct swrast_renderbuffer *
-swrast_new_renderbuffer(const struct gl_config *visual, GLboolean front)
-{
-    struct swrast_renderbuffer *xrb = calloc(1, sizeof *xrb);
-    GLuint pixel_format;
-
-    TRACE;
-
-    if (!xrb)
-	return NULL;
-
-    _mesa_init_renderbuffer(&xrb->Base, 0);
-
-    pixel_format = choose_pixel_format(visual);
-
-    xrb->Base.Delete = swrast_delete_renderbuffer;
-    if (front) {
-	xrb->Base.AllocStorage = swrast_alloc_front_storage;
-	swrast_set_span_funcs_front(xrb, pixel_format);
-    }
-    else {
-	xrb->Base.AllocStorage = swrast_alloc_back_storage;
-	swrast_set_span_funcs_back(xrb, pixel_format);
-    }
-
-    switch (pixel_format) {
-    case PF_A8R8G8B8:
-	xrb->Base.Format = MESA_FORMAT_ARGB8888;
-	xrb->Base.InternalFormat = GL_RGBA;
-	xrb->Base._BaseFormat = GL_RGBA;
-	xrb->Base.DataType = GL_UNSIGNED_BYTE;
-	xrb->bpp = 32;
-	break;
-    case PF_X8R8G8B8:
-	xrb->Base.Format = MESA_FORMAT_ARGB8888; /* XXX */
-	xrb->Base.InternalFormat = GL_RGB;
-	xrb->Base._BaseFormat = GL_RGB;
-	xrb->Base.DataType = GL_UNSIGNED_BYTE;
-	xrb->bpp = 32;
-	break;
-    case PF_R5G6B5:
-	xrb->Base.Format = MESA_FORMAT_RGB565;
-	xrb->Base.InternalFormat = GL_RGB;
-	xrb->Base._BaseFormat = GL_RGB;
-	xrb->Base.DataType = GL_UNSIGNED_BYTE;
-	xrb->bpp = 16;
-	break;
-    case PF_R3G3B2:
-	xrb->Base.Format = MESA_FORMAT_RGB332;
-	xrb->Base.InternalFormat = GL_RGB;
-	xrb->Base._BaseFormat = GL_RGB;
-	xrb->Base.DataType = GL_UNSIGNED_BYTE;
-	xrb->bpp = 8;
-	break;
-    default:
-	return NULL;
-    }
-
-    return xrb;
-}
-
-static GLboolean
-dri_create_buffer(__DRIscreen * sPriv,
-		  __DRIdrawable * dPriv,
-		  const struct gl_config * visual, GLboolean isPixmap)
-{
-    struct dri_drawable *drawable = NULL;
-    struct gl_framebuffer *fb;
-    struct swrast_renderbuffer *frontrb, *backrb;
-
-    TRACE;
-
-    drawable = CALLOC_STRUCT(dri_drawable);
-    if (drawable == NULL)
-	goto drawable_fail;
-
-    dPriv->driverPrivate = drawable;
-    drawable->dPriv = dPriv;
-
-    drawable->row = malloc(MAX_WIDTH * 4);
-    if (drawable->row == NULL)
-	goto drawable_fail;
-
-    fb = &drawable->Base;
-
-    /* basic framebuffer setup */
-    _mesa_initialize_window_framebuffer(fb, visual);
-
-    /* add front renderbuffer */
-    frontrb = swrast_new_renderbuffer(visual, GL_TRUE);
-    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontrb->Base);
-
-    /* add back renderbuffer */
-    if (visual->doubleBufferMode) {
-	backrb = swrast_new_renderbuffer(visual, GL_FALSE);
-	_mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backrb->Base);
-    }
-
-    /* add software renderbuffers */
-    _mesa_add_soft_renderbuffers(fb,
-				 GL_FALSE, /* color */
-				 visual->haveDepthBuffer,
-				 visual->haveStencilBuffer,
-				 visual->haveAccumBuffer,
-				 GL_FALSE, /* alpha */
-				 GL_FALSE /* aux bufs */);
-
-    return GL_TRUE;
-
-drawable_fail:
-
-    if (drawable)
-	free(drawable->row);
-
-    FREE(drawable);
-
-    return GL_FALSE;
-}
-
-static void
-dri_destroy_buffer(__DRIdrawable * dPriv)
-{
-    TRACE;
-
-    if (dPriv) {
-	struct dri_drawable *drawable = dri_drawable(dPriv);
-	struct gl_framebuffer *fb;
-
-	free(drawable->row);
-
-	fb = &drawable->Base;
-
-	fb->DeletePending = GL_TRUE;
-	_mesa_reference_framebuffer(&fb, NULL);
-    }
-}
-
-static void
-dri_swap_buffers(__DRIdrawable * dPriv)
-{
-    __DRIscreen *sPriv = dPriv->driScreenPriv;
-
-    GET_CURRENT_CONTEXT(ctx);
-
-    struct dri_drawable *drawable = dri_drawable(dPriv);
-    struct gl_framebuffer *fb;
-    struct swrast_renderbuffer *frontrb, *backrb;
-
-    TRACE;
-
-    fb = &drawable->Base;
-
-    frontrb =
-	swrast_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);
-    backrb =
-	swrast_renderbuffer(fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer);
-
-    /* check for signle-buffered */
-    if (backrb == NULL)
-	return;
-
-    /* check if swapping currently bound buffer */
-    if (ctx && ctx->DrawBuffer == fb) {
-	/* flush pending rendering */
-	_mesa_notifySwapBuffers(ctx);
-    }
-
-    sPriv->swrast_loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,
-				   0, 0,
-				   frontrb->Base.Width,
-				   frontrb->Base.Height,
-				   backrb->Base.Data,
-				   dPriv->loaderPrivate);
-}
-
-
-/**
- * General device driver functions.
- */
-
-static void
-get_window_size( struct gl_framebuffer *fb, GLsizei *w, GLsizei *h )
-{
-    __DRIdrawable *dPriv = swrast_drawable(fb)->dPriv;
-    __DRIscreen *sPriv = dPriv->driScreenPriv;
-    int x, y;
-
-    sPriv->swrast_loader->getDrawableInfo(dPriv,
-					  &x, &y, w, h,
-					  dPriv->loaderPrivate);
-}
-
-static void
-swrast_check_and_update_window_size( struct gl_context *ctx, struct gl_framebuffer *fb )
-{
-    GLsizei width, height;
-
-    get_window_size(fb, &width, &height);
-    if (fb->Width != width || fb->Height != height) {
-	_mesa_resize_framebuffer(ctx, fb, width, height);
-    }
-}
-
-static const GLubyte *
-get_string(struct gl_context *ctx, GLenum pname)
-{
-    (void) ctx;
-    switch (pname) {
-	case GL_VENDOR:
-	    return (const GLubyte *) "Mesa Project";
-	case GL_RENDERER:
-	    return (const GLubyte *) "Software Rasterizer";
-	default:
-	    return NULL;
-    }
-}
-
-static void
-update_state( struct gl_context *ctx, GLuint new_state )
-{
-    /* not much to do here - pass it on */
-    _swrast_InvalidateState( ctx, new_state );
-    _swsetup_InvalidateState( ctx, new_state );
-    _vbo_InvalidateState( ctx, new_state );
-    _tnl_InvalidateState( ctx, new_state );
-}
-
-static void
-viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
-{
-    struct gl_framebuffer *draw = ctx->WinSysDrawBuffer;
-    struct gl_framebuffer *read = ctx->WinSysReadBuffer;
-
-    swrast_check_and_update_window_size(ctx, draw);
-    swrast_check_and_update_window_size(ctx, read);
-}
-
-static gl_format swrastChooseTextureFormat(struct gl_context * ctx,
-					   GLint internalFormat,
-					   GLenum format,
-					   GLenum type)
-{
-    if (internalFormat == GL_RGB)
-	return MESA_FORMAT_XRGB8888;
-    return _mesa_choose_tex_format(ctx, internalFormat, format, type);
-}
-
-static void
-swrast_init_driver_functions(struct dd_function_table *driver)
-{
-    driver->GetString = get_string;
-    driver->UpdateState = update_state;
-    driver->GetBufferSize = NULL;
-    driver->Viewport = viewport;
-    driver->ChooseTextureFormat = swrastChooseTextureFormat;
-}
-
-static const char *es2_extensions[] = {
-   /* Used by mesa internally (cf all_mesa_extensions in ../common/utils.c) */
-   "GL_ARB_draw_buffers",
-   "GL_ARB_multisample",
-   "GL_ARB_texture_compression",
-   "GL_ARB_transpose_matrix",
-   "GL_ARB_vertex_buffer_object",
-   "GL_ARB_window_pos",
-   "GL_EXT_blend_func_separate",
-   "GL_EXT_compiled_vertex_array",
-   "GL_EXT_framebuffer_blit",
-   "GL_EXT_multi_draw_arrays",
-   "GL_EXT_polygon_offset",
-   "GL_EXT_texture_object",
-   "GL_EXT_vertex_array",
-   "GL_IBM_multimode_draw_arrays",
-   "GL_MESA_window_pos",
-   "GL_NV_vertex_program",
-
-   /* Required by GLES2 */
-   "GL_ARB_fragment_program",
-   "GL_ARB_fragment_shader",
-   "GL_ARB_multitexture",
-   "GL_ARB_shader_objects",
-   "GL_ARB_texture_cube_map",
-   "GL_ARB_texture_mirrored_repeat",
-   "GL_ARB_texture_non_power_of_two",
-   "GL_ARB_vertex_shader",
-   "GL_EXT_blend_color",
-   "GL_EXT_blend_equation_separate",
-   "GL_EXT_blend_minmax",
-   "GL_EXT_blend_subtract",
-   "GL_EXT_stencil_wrap",
-
-   /* Optional GLES2 */
-   "GL_ARB_framebuffer_object",
-   "GL_EXT_texture_filter_anisotropic",
-   "GL_ARB_depth_texture",
-   "GL_EXT_packed_depth_stencil",
-   "GL_EXT_framebuffer_object",
-   NULL,
-};
-
-static void
-InitExtensionsES2(struct gl_context *ctx)
-{
-   int i;
-
-   /* Can't use driInitExtensions() since it uses extensions from
-    * main/remap_helper.h when called the first time. */
-
-   for (i = 0; es2_extensions[i]; i++)
-      _mesa_enable_extension(ctx, es2_extensions[i]);
-}
-
-/**
- * Context-related functions.
- */
-
-static GLboolean
-dri_create_context(gl_api api,
-		   const struct gl_config * visual,
-		   __DRIcontext * cPriv, void *sharedContextPrivate)
-{
-    struct dri_context *ctx = NULL;
-    struct dri_context *share = (struct dri_context *)sharedContextPrivate;
-    struct gl_context *mesaCtx = NULL;
-    struct gl_context *sharedCtx = NULL;
-    struct dd_function_table functions;
-
-    TRACE;
-
-    ctx = CALLOC_STRUCT(dri_context);
-    if (ctx == NULL)
-	goto context_fail;
-
-    cPriv->driverPrivate = ctx;
-    ctx->cPriv = cPriv;
-
-    /* build table of device driver functions */
-    _mesa_init_driver_functions(&functions);
-    swrast_init_driver_functions(&functions);
-
-    if (share) {
-	sharedCtx = &share->Base;
-    }
-
-    mesaCtx = &ctx->Base;
-
-    /* basic context setup */
-    if (!_mesa_initialize_context(mesaCtx, api, visual, sharedCtx, &functions, (void *) cPriv)) {
-	goto context_fail;
-    }
-
-    /* do bounds checking to prevent segfaults and server crashes! */
-    mesaCtx->Const.CheckArrayBounds = GL_TRUE;
-
-    /* create module contexts */
-    _swrast_CreateContext( mesaCtx );
-    _vbo_CreateContext( mesaCtx );
-    _tnl_CreateContext( mesaCtx );
-    _swsetup_CreateContext( mesaCtx );
-    _swsetup_Wakeup( mesaCtx );
-
-    /* use default TCL pipeline */
-    {
-       TNLcontext *tnl = TNL_CONTEXT(mesaCtx);
-       tnl->Driver.RunPipeline = _tnl_run_pipeline;
-    }
-
-    _mesa_meta_init(mesaCtx);
-    _mesa_enable_sw_extensions(mesaCtx);
-
-    switch (api) {
-    case API_OPENGL:
-        _mesa_enable_1_3_extensions(mesaCtx);
-        _mesa_enable_1_4_extensions(mesaCtx);
-        _mesa_enable_1_5_extensions(mesaCtx);
-        _mesa_enable_2_0_extensions(mesaCtx);
-        _mesa_enable_2_1_extensions(mesaCtx);
-
-        driInitExtensions( mesaCtx, NULL, GL_FALSE );
-        break;
-    case API_OPENGLES:
-        _mesa_enable_1_3_extensions(mesaCtx);
-        _mesa_enable_1_4_extensions(mesaCtx);
-        _mesa_enable_1_5_extensions(mesaCtx);
-
-        break;
-    case API_OPENGLES2:
-        InitExtensionsES2( mesaCtx);
-        break;
-    }
-
-    return GL_TRUE;
-
-context_fail:
-
-    FREE(ctx);
-
-    return GL_FALSE;
-}
-
-static void
-dri_destroy_context(__DRIcontext * cPriv)
-{
-    TRACE;
-
-    if (cPriv) {
-	struct dri_context *ctx = dri_context(cPriv);
-	struct gl_context *mesaCtx;
-
-	mesaCtx = &ctx->Base;
-
-        _mesa_meta_free(mesaCtx);
-	_swsetup_DestroyContext( mesaCtx );
-	_swrast_DestroyContext( mesaCtx );
-	_tnl_DestroyContext( mesaCtx );
-	_vbo_DestroyContext( mesaCtx );
-	_mesa_destroy_context( mesaCtx );
-    }
-}
-
-static GLboolean
-dri_make_current(__DRIcontext * cPriv,
-		 __DRIdrawable * driDrawPriv,
-		 __DRIdrawable * driReadPriv)
-{
-    struct gl_context *mesaCtx;
-    struct gl_framebuffer *mesaDraw;
-    struct gl_framebuffer *mesaRead;
-    TRACE;
-
-    if (cPriv) {
-	struct dri_context *ctx = dri_context(cPriv);
-	struct dri_drawable *draw;
-	struct dri_drawable *read;
-
-	if (!driDrawPriv || !driReadPriv)
-	    return GL_FALSE;
-
-	draw = dri_drawable(driDrawPriv);
-	read = dri_drawable(driReadPriv);
-	mesaCtx = &ctx->Base;
-	mesaDraw = &draw->Base;
-	mesaRead = &read->Base;
-
-	/* check for same context and buffer */
-	if (mesaCtx == _mesa_get_current_context()
-	    && mesaCtx->DrawBuffer == mesaDraw
-	    && mesaCtx->ReadBuffer == mesaRead) {
-	    return GL_TRUE;
-	}
-
-	_glapi_check_multithread();
-
-	swrast_check_and_update_window_size(mesaCtx, mesaDraw);
-	if (mesaRead != mesaDraw)
-	    swrast_check_and_update_window_size(mesaCtx, mesaRead);
-
-	_mesa_make_current( mesaCtx,
-			    mesaDraw,
-			    mesaRead );
-    }
-    else {
-	/* unbind */
-	_mesa_make_current( NULL, NULL, NULL );
-    }
-
-    return GL_TRUE;
-}
-
-static GLboolean
-dri_unbind_context(__DRIcontext * cPriv)
-{
-    TRACE;
-    (void) cPriv;
-
-    /* Unset current context and dispath table */
-    _mesa_make_current(NULL, NULL, NULL);
-
-    return GL_TRUE;
-}
-
-
-const struct __DriverAPIRec driDriverAPI = {
-    .InitScreen = dri_init_screen,
-    .DestroyScreen = dri_destroy_screen,
-    .CreateContext = dri_create_context,
-    .DestroyContext = dri_destroy_context,
-    .CreateBuffer = dri_create_buffer,
-    .DestroyBuffer = dri_destroy_buffer,
-    .SwapBuffers = dri_swap_buffers,
-    .MakeCurrent = dri_make_current,
-    .UnbindContext = dri_unbind_context,
-};
-
-/* This is the table of extensions that the loader will dlsym() for. */
-PUBLIC const __DRIextension *__driDriverExtensions[] = {
-    &driCoreExtension.base,
-    &driSWRastExtension.base,
-    NULL
-};
+/*

+ * Copyright 2008, 2010 George Sapountzis <gsapountzis@gmail.com>

+ *

+ * 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.

+ */

+

+/*

+ * DRI software rasterizer

+ *

+ * This is the mesa swrast module packaged into a DRI driver structure.

+ *

+ * The front-buffer is allocated by the loader. The loader provides read/write

+ * callbacks for access to the front-buffer. The driver uses a scratch row for

+ * front-buffer rendering to avoid repeated calls to the loader.

+ *

+ * The back-buffer is allocated by the driver and is private.

+ */

+

+#ifdef _MSC_VER

+#define WIN32_LEAN_AND_MEAN 1

+#include <windows.h>

+#endif

+

+#include "main/context.h"

+#include "main/extensions.h"

+#include "main/formats.h"

+#include "main/framebuffer.h"

+#include "main/imports.h"

+#include "main/renderbuffer.h"

+#include "swrast/swrast.h"

+#include "swrast_setup/swrast_setup.h"

+#include "tnl/tnl.h"

+#include "tnl/t_context.h"

+#include "tnl/t_pipeline.h"

+#include "vbo/vbo.h"

+#include "drivers/common/driverfuncs.h"

+#include "drivers/common/meta.h"

+#include "utils.h"

+

+#include "main/teximage.h"

+#include "main/texformat.h"

+#include "main/texstate.h"

+

+#include "swrast_priv.h"

+

+

+/**

+ * Screen and config-related functions

+ */

+

+static void swrastSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,

+				GLint texture_format, __DRIdrawable *dPriv)

+{

+    struct dri_context *dri_ctx;

+    int x, y, w, h;

+    __DRIscreen *sPriv = dPriv->driScreenPriv;

+    struct gl_texture_unit *texUnit;

+    struct gl_texture_object *texObj;

+    struct gl_texture_image *texImage;

+    uint32_t internalFormat;

+    gl_format texFormat;

+

+    dri_ctx = pDRICtx->driverPrivate;

+

+    internalFormat = (texture_format == __DRI_TEXTURE_FORMAT_RGB ? 3 : 4);

+

+    texUnit = _mesa_get_current_tex_unit(&dri_ctx->Base);

+    texObj = _mesa_select_tex_object(&dri_ctx->Base, texUnit, target);

+    texImage = _mesa_get_tex_image(&dri_ctx->Base, texObj, target, 0);

+

+    _mesa_lock_texture(&dri_ctx->Base, texObj);

+

+    sPriv->swrast_loader->getDrawableInfo(dPriv, &x, &y, &w, &h, dPriv->loaderPrivate);

+

+    if (texture_format == __DRI_TEXTURE_FORMAT_RGB)

+	texFormat = MESA_FORMAT_XRGB8888;

+    else

+	texFormat = MESA_FORMAT_ARGB8888;

+

+    _mesa_init_teximage_fields(&dri_ctx->Base, target, texImage,

+			       w, h, 1, 0, internalFormat, texFormat);

+

+    sPriv->swrast_loader->getImage(dPriv, x, y, w, h, (char *)texImage->Data,

+				   dPriv->loaderPrivate);

+

+    _mesa_unlock_texture(&dri_ctx->Base, texObj);

+}

+

+static void swrastSetTexBuffer(__DRIcontext *pDRICtx, GLint target,

+			       __DRIdrawable *dPriv)

+{

+    swrastSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);

+}

+

+static const __DRItexBufferExtension swrastTexBufferExtension = {

+    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },

+    swrastSetTexBuffer,

+    swrastSetTexBuffer2,

+};

+

+static const __DRIextension *dri_screen_extensions[] = {

+    &swrastTexBufferExtension.base,

+    NULL

+};

+

+static __DRIconfig **

+swrastFillInModes(__DRIscreen *psp,

+		  unsigned pixel_bits, unsigned depth_bits,

+		  unsigned stencil_bits, GLboolean have_back_buffer)

+{

+    __DRIconfig **configs;

+    unsigned depth_buffer_factor;

+    unsigned back_buffer_factor;

+    GLenum fb_format;

+    GLenum fb_type;

+

+    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't

+     * support pageflipping at all.

+     */

+    static const GLenum back_buffer_modes[] = {

+	GLX_NONE, GLX_SWAP_UNDEFINED_OML

+    };

+

+    uint8_t depth_bits_array[4];

+    uint8_t stencil_bits_array[4];

+    uint8_t msaa_samples_array[1];

+

+    depth_bits_array[0] = 0;

+    depth_bits_array[1] = 0;

+    depth_bits_array[2] = depth_bits;

+    depth_bits_array[3] = depth_bits;

+

+    /* Just like with the accumulation buffer, always provide some modes

+     * with a stencil buffer.

+     */

+    stencil_bits_array[0] = 0;

+    stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;

+    stencil_bits_array[2] = 0;

+    stencil_bits_array[3] = (stencil_bits == 0) ? 8 : stencil_bits;

+

+    msaa_samples_array[0] = 0;

+

+    depth_buffer_factor = 4;

+    back_buffer_factor = 2;

+

+    switch (pixel_bits) {

+    case 8:

+	fb_format = GL_RGB;

+	fb_type = GL_UNSIGNED_BYTE_2_3_3_REV;

+	break;

+    case 16:

+	fb_format = GL_RGB;

+	fb_type = GL_UNSIGNED_SHORT_5_6_5;

+	break;

+    case 24:

+	fb_format = GL_BGR;

+	fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;

+	break;

+    case 32:

+	fb_format = GL_BGRA;

+	fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;

+	break;

+    default:

+	fprintf(stderr, "[%s:%u] bad depth %d\n", __FUNCTION__, __LINE__,

+		pixel_bits);

+	return NULL;

+    }

+

+    configs = driCreateConfigs(fb_format, fb_type,

+			       depth_bits_array, stencil_bits_array,

+			       depth_buffer_factor, back_buffer_modes,

+			       back_buffer_factor, msaa_samples_array, 1,

+			       GL_TRUE);

+    if (configs == NULL) {

+	fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __FUNCTION__,

+		__LINE__);

+	return NULL;

+    }

+

+    return configs;

+}

+

+static const __DRIconfig **

+dri_init_screen(__DRIscreen * psp)

+{

+    __DRIconfig **configs8, **configs16, **configs24, **configs32;

+

+    TRACE;

+

+    psp->extensions = dri_screen_extensions;

+

+    configs8  = swrastFillInModes(psp,  8,  8, 0, 1);

+    configs16 = swrastFillInModes(psp, 16, 16, 0, 1);

+    configs24 = swrastFillInModes(psp, 24, 24, 8, 1);

+    configs32 = swrastFillInModes(psp, 32, 24, 8, 1);

+

+    configs16 = driConcatConfigs(configs8, configs16);

+    configs24 = driConcatConfigs(configs16, configs24);

+    configs32 = driConcatConfigs(configs24, configs32);

+

+    return (const __DRIconfig **)configs32;

+}

+

+static void

+dri_destroy_screen(__DRIscreen * sPriv)

+{

+    TRACE;

+}

+

+

+/**

+ * Framebuffer and renderbuffer-related functions.

+ */

+

+static GLuint

+choose_pixel_format(const struct gl_config *v)

+{

+    int depth = v->rgbBits;

+

+    if (depth == 32

+	&& v->redMask   == 0xff0000

+	&& v->greenMask == 0x00ff00

+	&& v->blueMask  == 0x0000ff)

+	return PF_A8R8G8B8;

+    else if (depth == 24

+	     && v->redMask   == 0xff0000

+	     && v->greenMask == 0x00ff00

+	     && v->blueMask  == 0x0000ff)

+	return PF_X8R8G8B8;

+    else if (depth == 16

+	     && v->redMask   == 0xf800

+	     && v->greenMask == 0x07e0

+	     && v->blueMask  == 0x001f)

+	return PF_R5G6B5;

+    else if (depth == 8

+	     && v->redMask   == 0x07

+	     && v->greenMask == 0x38

+	     && v->blueMask  == 0xc0)

+	return PF_R3G3B2;

+

+    _mesa_problem( NULL, "unexpected format in %s", __FUNCTION__ );

+    return 0;

+}

+

+static void

+swrast_delete_renderbuffer(struct gl_renderbuffer *rb)

+{

+    TRACE;

+

+    free(rb->Data);

+    free(rb);

+}

+

+/* see bytes_per_line in libGL */

+static INLINE int

+bytes_per_line(unsigned pitch_bits, unsigned mul)

+{

+   unsigned mask = mul - 1;

+

+   return ((pitch_bits + mask) & ~mask) / 8;

+}

+

+static GLboolean

+swrast_alloc_front_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,

+			   GLenum internalFormat, GLuint width, GLuint height)

+{

+    struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);

+

+    TRACE;

+

+    rb->Data = NULL;

+    rb->Width = width;

+    rb->Height = height;

+

+    xrb->pitch = bytes_per_line(width * xrb->bpp, 32);

+

+    return GL_TRUE;

+}

+

+static GLboolean

+swrast_alloc_back_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,

+			  GLenum internalFormat, GLuint width, GLuint height)

+{

+    struct swrast_renderbuffer *xrb = swrast_renderbuffer(rb);

+

+    TRACE;

+

+    free(rb->Data);

+

+    swrast_alloc_front_storage(ctx, rb, internalFormat, width, height);

+

+    rb->Data = malloc(height * xrb->pitch);

+

+    return GL_TRUE;

+}

+

+static struct swrast_renderbuffer *

+swrast_new_renderbuffer(const struct gl_config *visual, GLboolean front)

+{

+    struct swrast_renderbuffer *xrb = calloc(1, sizeof *xrb);

+    GLuint pixel_format;

+

+    TRACE;

+

+    if (!xrb)

+	return NULL;

+

+    _mesa_init_renderbuffer(&xrb->Base, 0);

+

+    pixel_format = choose_pixel_format(visual);

+

+    xrb->Base.Delete = swrast_delete_renderbuffer;

+    if (front) {

+	xrb->Base.AllocStorage = swrast_alloc_front_storage;

+	swrast_set_span_funcs_front(xrb, pixel_format);

+    }

+    else {

+	xrb->Base.AllocStorage = swrast_alloc_back_storage;

+	swrast_set_span_funcs_back(xrb, pixel_format);

+    }

+

+    switch (pixel_format) {

+    case PF_A8R8G8B8:

+	xrb->Base.Format = MESA_FORMAT_ARGB8888;

+	xrb->Base.InternalFormat = GL_RGBA;

+	xrb->Base._BaseFormat = GL_RGBA;

+	xrb->Base.DataType = GL_UNSIGNED_BYTE;

+	xrb->bpp = 32;

+	break;

+    case PF_X8R8G8B8:

+	xrb->Base.Format = MESA_FORMAT_ARGB8888; /* XXX */

+	xrb->Base.InternalFormat = GL_RGB;

+	xrb->Base._BaseFormat = GL_RGB;

+	xrb->Base.DataType = GL_UNSIGNED_BYTE;

+	xrb->bpp = 32;

+	break;

+    case PF_R5G6B5:

+	xrb->Base.Format = MESA_FORMAT_RGB565;

+	xrb->Base.InternalFormat = GL_RGB;

+	xrb->Base._BaseFormat = GL_RGB;

+	xrb->Base.DataType = GL_UNSIGNED_BYTE;

+	xrb->bpp = 16;

+	break;

+    case PF_R3G3B2:

+	xrb->Base.Format = MESA_FORMAT_RGB332;

+	xrb->Base.InternalFormat = GL_RGB;

+	xrb->Base._BaseFormat = GL_RGB;

+	xrb->Base.DataType = GL_UNSIGNED_BYTE;

+	xrb->bpp = 8;

+	break;

+    default:

+	return NULL;

+    }

+

+    return xrb;

+}

+

+static GLboolean

+dri_create_buffer(__DRIscreen * sPriv,

+		  __DRIdrawable * dPriv,

+		  const struct gl_config * visual, GLboolean isPixmap)

+{

+    struct dri_drawable *drawable = NULL;

+    struct gl_framebuffer *fb;

+    struct swrast_renderbuffer *frontrb, *backrb;

+

+    TRACE;

+

+    drawable = CALLOC_STRUCT(dri_drawable);

+    if (drawable == NULL)

+	goto drawable_fail;

+

+    dPriv->driverPrivate = drawable;

+    drawable->dPriv = dPriv;

+

+    drawable->row = malloc(MAX_WIDTH * 4);

+    if (drawable->row == NULL)

+	goto drawable_fail;

+

+    fb = &drawable->Base;

+

+    /* basic framebuffer setup */

+    _mesa_initialize_window_framebuffer(fb, visual);

+

+    /* add front renderbuffer */

+    frontrb = swrast_new_renderbuffer(visual, GL_TRUE);

+    _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontrb->Base);

+

+    /* add back renderbuffer */

+    if (visual->doubleBufferMode) {

+	backrb = swrast_new_renderbuffer(visual, GL_FALSE);

+	_mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backrb->Base);

+    }

+

+    /* add software renderbuffers */

+    _mesa_add_soft_renderbuffers(fb,

+				 GL_FALSE, /* color */

+				 visual->haveDepthBuffer,

+				 visual->haveStencilBuffer,

+				 visual->haveAccumBuffer,

+				 GL_FALSE, /* alpha */

+				 GL_FALSE /* aux bufs */);

+

+    return GL_TRUE;

+

+drawable_fail:

+

+    if (drawable)

+	free(drawable->row);

+

+    FREE(drawable);

+

+    return GL_FALSE;

+}

+

+static void

+dri_destroy_buffer(__DRIdrawable * dPriv)

+{

+    TRACE;

+

+    if (dPriv) {

+	struct dri_drawable *drawable = dri_drawable(dPriv);

+	struct gl_framebuffer *fb;

+

+	free(drawable->row);

+

+	fb = &drawable->Base;

+

+	fb->DeletePending = GL_TRUE;

+	_mesa_reference_framebuffer(&fb, NULL);

+    }

+}

+

+static void

+dri_swap_buffers(__DRIdrawable * dPriv)

+{

+    __DRIscreen *sPriv = dPriv->driScreenPriv;

+

+    GET_CURRENT_CONTEXT(ctx);

+

+    struct dri_drawable *drawable = dri_drawable(dPriv);

+    struct gl_framebuffer *fb;

+    struct swrast_renderbuffer *frontrb, *backrb;

+

+    TRACE;

+

+    fb = &drawable->Base;

+

+    frontrb =

+	swrast_renderbuffer(fb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer);

+    backrb =

+	swrast_renderbuffer(fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer);

+

+    /* check for signle-buffered */

+    if (backrb == NULL)

+	return;

+

+    /* check if swapping currently bound buffer */

+    if (ctx && ctx->DrawBuffer == fb) {

+	/* flush pending rendering */

+	_mesa_notifySwapBuffers(ctx);

+    }

+

+    sPriv->swrast_loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP,

+				   0, 0,

+				   frontrb->Base.Width,

+				   frontrb->Base.Height,

+				   backrb->Base.Data,

+				   dPriv->loaderPrivate);

+}

+

+

+/**

+ * General device driver functions.

+ */

+

+static void

+get_window_size( struct gl_framebuffer *fb, GLsizei *w, GLsizei *h )

+{

+    __DRIdrawable *dPriv = swrast_drawable(fb)->dPriv;

+    __DRIscreen *sPriv = dPriv->driScreenPriv;

+    int x, y;

+

+    sPriv->swrast_loader->getDrawableInfo(dPriv,

+					  &x, &y, w, h,

+					  dPriv->loaderPrivate);

+}

+

+static void

+swrast_check_and_update_window_size( struct gl_context *ctx, struct gl_framebuffer *fb )

+{

+    GLsizei width, height;

+

+    get_window_size(fb, &width, &height);

+    if (fb->Width != width || fb->Height != height) {

+	_mesa_resize_framebuffer(ctx, fb, width, height);

+    }

+}

+

+static const GLubyte *

+get_string(struct gl_context *ctx, GLenum pname)

+{

+    (void) ctx;

+    switch (pname) {

+	case GL_VENDOR:

+	    return (const GLubyte *) "Mesa Project";

+	case GL_RENDERER:

+	    return (const GLubyte *) "Software Rasterizer";

+	default:

+	    return NULL;

+    }

+}

+

+static void

+update_state( struct gl_context *ctx, GLuint new_state )

+{

+    /* not much to do here - pass it on */

+    _swrast_InvalidateState( ctx, new_state );

+    _swsetup_InvalidateState( ctx, new_state );

+    _vbo_InvalidateState( ctx, new_state );

+    _tnl_InvalidateState( ctx, new_state );

+}

+

+static void

+viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)

+{

+    struct gl_framebuffer *draw = ctx->WinSysDrawBuffer;

+    struct gl_framebuffer *read = ctx->WinSysReadBuffer;

+

+    swrast_check_and_update_window_size(ctx, draw);

+    swrast_check_and_update_window_size(ctx, read);

+}

+

+static gl_format swrastChooseTextureFormat(struct gl_context * ctx,

+					   GLint internalFormat,

+					   GLenum format,

+					   GLenum type)

+{

+    if (internalFormat == GL_RGB)

+	return MESA_FORMAT_XRGB8888;

+    return _mesa_choose_tex_format(ctx, internalFormat, format, type);

+}

+

+static void

+swrast_init_driver_functions(struct dd_function_table *driver)

+{

+    driver->GetString = get_string;

+    driver->UpdateState = update_state;

+    driver->GetBufferSize = NULL;

+    driver->Viewport = viewport;

+    driver->ChooseTextureFormat = swrastChooseTextureFormat;

+}

+

+static const char *es2_extensions[] = {

+   /* Used by mesa internally (cf all_mesa_extensions in ../common/utils.c) */

+   "GL_ARB_draw_buffers",

+   "GL_ARB_multisample",

+   "GL_ARB_texture_compression",

+   "GL_ARB_transpose_matrix",

+   "GL_ARB_vertex_buffer_object",

+   "GL_ARB_window_pos",

+   "GL_EXT_blend_func_separate",

+   "GL_EXT_compiled_vertex_array",

+   "GL_EXT_framebuffer_blit",

+   "GL_EXT_multi_draw_arrays",

+   "GL_EXT_polygon_offset",

+   "GL_EXT_texture_object",

+   "GL_EXT_vertex_array",

+   "GL_IBM_multimode_draw_arrays",

+   "GL_MESA_window_pos",

+   "GL_NV_vertex_program",

+

+   /* Required by GLES2 */

+   "GL_ARB_fragment_program",

+   "GL_ARB_fragment_shader",

+   "GL_ARB_multitexture",

+   "GL_ARB_shader_objects",

+   "GL_ARB_texture_cube_map",

+   "GL_ARB_texture_mirrored_repeat",

+   "GL_ARB_texture_non_power_of_two",

+   "GL_ARB_vertex_shader",

+   "GL_EXT_blend_color",

+   "GL_EXT_blend_equation_separate",

+   "GL_EXT_blend_minmax",

+   "GL_EXT_blend_subtract",

+   "GL_EXT_stencil_wrap",

+

+   /* Optional GLES2 */

+   "GL_ARB_framebuffer_object",

+   "GL_EXT_texture_filter_anisotropic",

+   "GL_ARB_depth_texture",

+   "GL_EXT_packed_depth_stencil",

+   "GL_EXT_framebuffer_object",

+   NULL,

+};

+

+static void

+InitExtensionsES2(struct gl_context *ctx)

+{

+   int i;

+

+   /* Can't use driInitExtensions() since it uses extensions from

+    * main/remap_helper.h when called the first time. */

+

+   for (i = 0; es2_extensions[i]; i++)

+      _mesa_enable_extension(ctx, es2_extensions[i]);

+}

+

+/**

+ * Context-related functions.

+ */

+

+static GLboolean

+dri_create_context(gl_api api,

+		   const struct gl_config * visual,

+		   __DRIcontext * cPriv, void *sharedContextPrivate)

+{

+    struct dri_context *ctx = NULL;

+    struct dri_context *share = (struct dri_context *)sharedContextPrivate;

+    struct gl_context *mesaCtx = NULL;

+    struct gl_context *sharedCtx = NULL;

+    struct dd_function_table functions;

+

+    TRACE;

+

+    ctx = CALLOC_STRUCT(dri_context);

+    if (ctx == NULL)

+	goto context_fail;

+

+    cPriv->driverPrivate = ctx;

+    ctx->cPriv = cPriv;

+

+    /* build table of device driver functions */

+    _mesa_init_driver_functions(&functions);

+    swrast_init_driver_functions(&functions);

+

+    if (share) {

+	sharedCtx = &share->Base;

+    }

+

+    mesaCtx = &ctx->Base;

+

+    /* basic context setup */

+    if (!_mesa_initialize_context(mesaCtx, api, visual, sharedCtx, &functions, (void *) cPriv)) {

+	goto context_fail;

+    }

+

+    /* do bounds checking to prevent segfaults and server crashes! */

+    mesaCtx->Const.CheckArrayBounds = GL_TRUE;

+

+    /* create module contexts */

+    _swrast_CreateContext( mesaCtx );

+    _vbo_CreateContext( mesaCtx );

+    _tnl_CreateContext( mesaCtx );

+    _swsetup_CreateContext( mesaCtx );

+    _swsetup_Wakeup( mesaCtx );

+

+    /* use default TCL pipeline */

+    {

+       TNLcontext *tnl = TNL_CONTEXT(mesaCtx);

+       tnl->Driver.RunPipeline = _tnl_run_pipeline;

+    }

+

+    _mesa_meta_init(mesaCtx);

+    _mesa_enable_sw_extensions(mesaCtx);

+

+    switch (api) {

+    case API_OPENGL:

+        _mesa_enable_1_3_extensions(mesaCtx);

+        _mesa_enable_1_4_extensions(mesaCtx);

+        _mesa_enable_1_5_extensions(mesaCtx);

+        _mesa_enable_2_0_extensions(mesaCtx);

+        _mesa_enable_2_1_extensions(mesaCtx);

+

+        driInitExtensions( mesaCtx, NULL, GL_FALSE );

+        break;

+    case API_OPENGLES:

+        _mesa_enable_1_3_extensions(mesaCtx);

+        _mesa_enable_1_4_extensions(mesaCtx);

+        _mesa_enable_1_5_extensions(mesaCtx);

+

+        break;

+    case API_OPENGLES2:

+        InitExtensionsES2( mesaCtx);

+        break;

+    }

+

+    return GL_TRUE;

+

+context_fail:

+

+    FREE(ctx);

+

+    return GL_FALSE;

+}

+

+static void

+dri_destroy_context(__DRIcontext * cPriv)

+{

+    TRACE;

+

+    if (cPriv) {

+	struct dri_context *ctx = dri_context(cPriv);

+	struct gl_context *mesaCtx;

+

+	mesaCtx = &ctx->Base;

+

+        _mesa_meta_free(mesaCtx);

+	_swsetup_DestroyContext( mesaCtx );

+	_swrast_DestroyContext( mesaCtx );

+	_tnl_DestroyContext( mesaCtx );

+	_vbo_DestroyContext( mesaCtx );

+	_mesa_destroy_context( mesaCtx );

+    }

+}

+

+static GLboolean

+dri_make_current(__DRIcontext * cPriv,

+		 __DRIdrawable * driDrawPriv,

+		 __DRIdrawable * driReadPriv)

+{

+    struct gl_context *mesaCtx;

+    struct gl_framebuffer *mesaDraw;

+    struct gl_framebuffer *mesaRead;

+    TRACE;

+

+    if (cPriv) {

+	struct dri_context *ctx = dri_context(cPriv);

+	struct dri_drawable *draw;

+	struct dri_drawable *read;

+

+	if (!driDrawPriv || !driReadPriv)

+	    return GL_FALSE;

+

+	draw = dri_drawable(driDrawPriv);

+	read = dri_drawable(driReadPriv);

+	mesaCtx = &ctx->Base;

+	mesaDraw = &draw->Base;

+	mesaRead = &read->Base;

+

+	/* check for same context and buffer */

+	if (mesaCtx == _mesa_get_current_context()

+	    && mesaCtx->DrawBuffer == mesaDraw

+	    && mesaCtx->ReadBuffer == mesaRead) {

+	    return GL_TRUE;

+	}

+

+	_glapi_check_multithread();

+

+	swrast_check_and_update_window_size(mesaCtx, mesaDraw);

+	if (mesaRead != mesaDraw)

+	    swrast_check_and_update_window_size(mesaCtx, mesaRead);

+

+	_mesa_make_current( mesaCtx,

+			    mesaDraw,

+			    mesaRead );

+    }

+    else {

+	/* unbind */

+	_mesa_make_current( NULL, NULL, NULL );

+    }

+

+    return GL_TRUE;

+}

+

+static GLboolean

+dri_unbind_context(__DRIcontext * cPriv)

+{

+    TRACE;

+    (void) cPriv;

+

+    /* Unset current context and dispath table */

+    _mesa_make_current(NULL, NULL, NULL);

+

+    return GL_TRUE;

+}

+

+

+const struct __DriverAPIRec driDriverAPI = {

+    /*.InitScreen = */dri_init_screen,

+    /*.DestroyScreen = */dri_destroy_screen,

+    /*.CreateContext = */dri_create_context,

+    /*.DestroyContext = */dri_destroy_context,

+    /*.CreateBuffer = */dri_create_buffer,

+    /*.DestroyBuffer = */dri_destroy_buffer,

+    /*.SwapBuffers = */dri_swap_buffers,

+    /*.MakeCurrent = */dri_make_current,

+    /*.UnbindContext = */dri_unbind_context,

+};

+

+/* This is the table of extensions that the loader will dlsym() for. */

+PUBLIC const __DRIextension *__driDriverExtensions[] = {

+    &driCoreExtension.base,

+    &driSWRastExtension.base,

+    NULL

+};

diff --git a/mesalib/src/mesa/drivers/dri/swrast/swrast_priv.h b/mesalib/src/mesa/drivers/dri/swrast/swrast_priv.h
index 4c3c9830f..e61965147 100644
--- a/mesalib/src/mesa/drivers/dri/swrast/swrast_priv.h
+++ b/mesalib/src/mesa/drivers/dri/swrast/swrast_priv.h
@@ -32,6 +32,13 @@
 #include "main/mtypes.h"

 #include "drisw_util.h"

 

+#ifdef _MSC_VER

+#ifdef PUBLIC

+#undef PUBLIC

+#endif

+#define PUBLIC __declspec(dllexport)

+#endif

+

 

 /**

  * Debugging