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authorReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
committerReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
commitf4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch)
tree2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/extras/Mesa/src/mesa/drivers/osmesa
parenta840692edc9c6d19cd7c057f68e39c7d95eb767d (diff)
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Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/drivers/osmesa')
-rw-r--r--nx-X11/extras/Mesa/src/mesa/drivers/osmesa/Makefile.win39
-rw-r--r--nx-X11/extras/Mesa/src/mesa/drivers/osmesa/descrip.mms41
-rw-r--r--nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.c1333
-rw-r--r--nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.def13
4 files changed, 1426 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/Makefile.win b/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/Makefile.win
new file mode 100644
index 000000000..36d520e65
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/Makefile.win
@@ -0,0 +1,39 @@
+# Makefile for Win32
+
+!include <win32.mak>
+
+TOP = ..\..
+
+OSMESA_SRCS = osmesa.c
+OSMESA_OBJS = osmesa.obj
+
+ASM_SRCS =
+CORE_SRCS =
+DRIVER_SRCS = $(OSMESA_SRCS)
+
+SRCS = $(OSMESA_SRCS)
+
+all : osmesadll
+
+!include "$(TOP)/mesawin32.mak"
+
+osmesadll: $(OSMESADLL)
+
+CFLAGS = $(cvarsdll) $(CFLAGS) -D_OPENGL32_ -DBUILD_GL32 -I$(TOP)/src
+LFLAGS = $(dlllflags) $(lcommon) $(LFLAGS)
+
+OBJS = $(ASM_SRCS:.S=.obj) $(CORE_SRCS:.c=.obj) $(DRIVER_SRCS:.c=.obj)
+LIBS = $(guilibsdll) $(TOP)/lib/$(MESALIB)
+
+$(OSMESADLL) : $(OBJS) osmesa.def
+ $(link) $(LFLAGS) -def:osmesa.def -out:$(OSMESADLL) $(OBJS) $(LIBS)
+ @echo "copying OSMesa library to library directory..."
+ -copy $(OSMESALIB) $(TOP)\lib
+ @echo "copying OSMesa dll to library directory..."
+ -copy $(OSMESADLL) $(TOP)\lib
+
+install : $(OSMESADLL)
+ @echo "copying OSMesa library to system library directory..."
+ -copy $(OSMESALIB) $(LIBINSTALL)
+ @echo "copying OSMesa dll to system library directory..."
+ -copy $(OSMESADLL) $(DLLINSTALL)
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/descrip.mms b/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/descrip.mms
new file mode 100644
index 000000000..64dc041f9
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/descrip.mms
@@ -0,0 +1,41 @@
+# Makefile for core library for VMS
+# contributed by Jouk Jansen joukj@hrem.stm.tudelft.nl
+# Last revision : 16 June 2003
+
+.first
+ define gl [----.include.gl]
+ define math [--.math]
+ define tnl [--.tnl]
+ define swrast [--.swrast]
+ define swrast_setup [--.swrast_setup]
+ define array_cache [--.array_cache]
+ define drivers [-]
+
+.include [----]mms-config.
+
+##### MACROS #####
+
+VPATH = RCS
+
+INCDIR = [----.include],[--.main],[--.glapi]
+LIBDIR = [----.lib]
+CFLAGS = /include=($(INCDIR),[])/define=(PTHREADS=1)/name=(as_is,short)
+
+SOURCES = osmesa.c
+
+OBJECTS = osmesa.obj
+
+##### RULES #####
+
+VERSION=Mesa V3.4
+
+##### TARGETS #####
+# Make the library
+$(LIBDIR)$(GL_LIB) : $(OBJECTS)
+ @ library $(LIBDIR)$(GL_LIB) $(OBJECTS)
+
+clean :
+ purge
+ delete *.obj;*
+
+osmesa.obj : osmesa.c
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.c b/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.c
new file mode 100644
index 000000000..8a85b5ecf
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.c
@@ -0,0 +1,1333 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.3
+ *
+ * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/*
+ * Off-Screen Mesa rendering / Rendering into client memory space
+ *
+ * Note on thread safety: this driver is thread safe. All
+ * functions are reentrant. The notion of current context is
+ * managed by the core _mesa_make_current() and _mesa_get_current_context()
+ * functions. Those functions are thread-safe.
+ */
+
+
+#include "glheader.h"
+#include "GL/osmesa.h"
+#include "context.h"
+#include "extensions.h"
+#include "framebuffer.h"
+#include "fbobject.h"
+#include "imports.h"
+#include "mtypes.h"
+#include "renderbuffer.h"
+#include "array_cache/acache.h"
+#include "swrast/swrast.h"
+#include "swrast_setup/swrast_setup.h"
+#include "swrast/s_context.h"
+#include "swrast/s_depth.h"
+#include "swrast/s_lines.h"
+#include "swrast/s_triangle.h"
+#include "tnl/tnl.h"
+#include "tnl/t_context.h"
+#include "tnl/t_pipeline.h"
+#include "drivers/common/driverfuncs.h"
+
+
+
+/*
+ * This is the OS/Mesa context struct.
+ * Notice how it includes a GLcontext. By doing this we're mimicking
+ * C++ inheritance/derivation.
+ * Later, we can cast a GLcontext pointer into an OSMesaContext pointer
+ * or vice versa.
+ */
+struct osmesa_context {
+ GLcontext mesa; /* The core GL/Mesa context */
+ GLvisual *gl_visual; /* Describes the buffers */
+ GLframebuffer *gl_buffer; /* Depth, stencil, accum, etc buffers */
+ GLenum format; /* either GL_RGBA or GL_COLOR_INDEX */
+ void *buffer; /* the image buffer */
+ GLint width, height; /* size of image buffer */
+ GLint rowlength; /* number of pixels per row */
+ GLint userRowLength; /* user-specified number of pixels per row */
+ GLint rshift, gshift; /* bit shifts for RGBA formats */
+ GLint bshift, ashift;
+ GLint rInd, gInd, bInd, aInd;/* index offsets for RGBA formats */
+ GLchan *rowaddr[MAX_HEIGHT]; /* address of first pixel in each image row */
+ GLboolean yup; /* TRUE -> Y increases upward */
+ /* FALSE -> Y increases downward */
+};
+
+
+/* Just cast, since we're using structure containment */
+#define OSMESA_CONTEXT(ctx) ((OSMesaContext) (ctx->DriverCtx))
+
+
+
+/**********************************************************************/
+/*** Private Device Driver Functions ***/
+/**********************************************************************/
+
+
+static const GLubyte *
+get_string( GLcontext *ctx, GLenum name )
+{
+ (void) ctx;
+ switch (name) {
+ case GL_RENDERER:
+#if CHAN_BITS == 32
+ return (const GLubyte *) "Mesa OffScreen32";
+#elif CHAN_BITS == 16
+ return (const GLubyte *) "Mesa OffScreen16";
+#else
+ return (const GLubyte *) "Mesa OffScreen";
+#endif
+ default:
+ return NULL;
+ }
+}
+
+
+static void
+osmesa_update_state( GLcontext *ctx, GLuint new_state )
+{
+ /* easy - just propogate */
+ _swrast_InvalidateState( ctx, new_state );
+ _swsetup_InvalidateState( ctx, new_state );
+ _ac_InvalidateState( ctx, new_state );
+ _tnl_InvalidateState( ctx, new_state );
+}
+
+
+static void
+set_buffer( GLcontext *ctx, GLframebuffer *buffer, GLuint bufferBit )
+{
+ /* separate read buffer not supported */
+ ASSERT(buffer == ctx->DrawBuffer);
+ ASSERT(bufferBit == BUFFER_BIT_FRONT_LEFT);
+}
+
+
+/*
+ * Just return the current buffer size.
+ * There's no window to track the size of.
+ */
+static void
+get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height )
+{
+ /* don't use GET_CURRENT_CONTEXT(ctx) here - it's a problem on Windows */
+ GLcontext *ctx = (GLcontext *) _glapi_get_context();
+ (void) buffer;
+ if (ctx) {
+ OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+ *width = osmesa->width;
+ *height = osmesa->height;
+ }
+}
+
+
+/**********************************************************************/
+/***** Read/write spans/arrays of pixels *****/
+/**********************************************************************/
+
+/* RGBA */
+#define NAME(PREFIX) PREFIX##_RGBA
+#define FORMAT GL_RGBA
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLchan *P = osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 4
+#if CHAN_TYPE == GL_FLOAT
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[0] = MAX2((VALUE[RCOMP]), 0.0F); \
+ DST[1] = MAX2((VALUE[GCOMP]), 0.0F); \
+ DST[2] = MAX2((VALUE[BCOMP]), 0.0F); \
+ DST[3] = CLAMP((VALUE[ACOMP]), 0.0F, CHAN_MAXF)
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[0] = MAX2((VALUE[RCOMP]), 0.0F); \
+ DST[1] = MAX2((VALUE[GCOMP]), 0.0F); \
+ DST[2] = MAX2((VALUE[BCOMP]), 0.0F); \
+ DST[3] = CHAN_MAXF
+#else
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[0] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[2] = VALUE[BCOMP]; \
+ DST[3] = VALUE[ACOMP]
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[0] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[2] = VALUE[BCOMP]; \
+ DST[3] = CHAN_MAX
+#endif
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[0]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[2]; \
+ DST[ACOMP] = SRC[3]
+#include "swrast/s_spantemp.h"
+
+/* BGRA */
+#define NAME(PREFIX) PREFIX##_BGRA
+#define FORMAT GL_RGBA
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLchan *P = osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 4
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[2] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[0] = VALUE[BCOMP]; \
+ DST[3] = VALUE[ACOMP]
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[2] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[0] = VALUE[BCOMP]; \
+ DST[3] = CHAN_MAX
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[2]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[0]; \
+ DST[ACOMP] = SRC[3]
+#include "swrast/s_spantemp.h"
+
+/* ARGB */
+#define NAME(PREFIX) PREFIX##_ARGB
+#define FORMAT GL_RGBA
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLchan *P = osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 4
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[1] = VALUE[RCOMP]; \
+ DST[2] = VALUE[GCOMP]; \
+ DST[3] = VALUE[BCOMP]; \
+ DST[0] = VALUE[ACOMP]
+#define STORE_PIXEL_RGB(DST, X, Y, VALUE) \
+ DST[1] = VALUE[RCOMP]; \
+ DST[2] = VALUE[GCOMP]; \
+ DST[3] = VALUE[BCOMP]; \
+ DST[0] = CHAN_MAX
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[1]; \
+ DST[GCOMP] = SRC[2]; \
+ DST[BCOMP] = SRC[3]; \
+ DST[ACOMP] = SRC[0]
+#include "swrast/s_spantemp.h"
+
+/* RGB */
+#define NAME(PREFIX) PREFIX##_RGB
+#define FORMAT GL_RGBA
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLchan *P = osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 3
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[0] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[2] = VALUE[BCOMP]
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[0]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[2]; \
+ DST[ACOMP] = CHAN_MAX
+#include "swrast/s_spantemp.h"
+
+/* BGR */
+#define NAME(PREFIX) PREFIX##_BGR
+#define FORMAT GL_RGBA
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLchan *P = osmesa->rowaddr[Y] + 4 * (X)
+#define INC_PIXEL_PTR(P) P += 3
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ DST[2] = VALUE[RCOMP]; \
+ DST[1] = VALUE[GCOMP]; \
+ DST[0] = VALUE[BCOMP]
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = SRC[2]; \
+ DST[GCOMP] = SRC[1]; \
+ DST[BCOMP] = SRC[0]; \
+ DST[ACOMP] = CHAN_MAX
+#include "swrast/s_spantemp.h"
+
+/* 16-bit BGR */
+#if CHAN_TYPE == GL_UNSIGNED_BYTE
+#define NAME(PREFIX) PREFIX##_RGB_565
+#define FORMAT GL_RGBA
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLushort *P = (GLushort *) osmesa->rowaddr[Y] + (X)
+#define INC_PIXEL_PTR(P) P += 1
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ *DST = ( (((VALUE[RCOMP]) & 0xf8) << 8) | (((VALUE[GCOMP]) & 0xfc) << 3) | ((VALUE[BCOMP]) >> 3) )
+#define FETCH_PIXEL(DST, SRC) \
+ DST[RCOMP] = ( (((*SRC) >> 8) & 0xf8) | (((*SRC) >> 11) & 0x7) ); \
+ DST[GCOMP] = ( (((*SRC) >> 3) & 0xfc) | (((*SRC) >> 5) & 0x3) ); \
+ DST[BCOMP] = ( (((*SRC) << 3) & 0xf8) | (((*SRC) ) & 0x7) ); \
+ DST[ACOMP] = CHAN_MAX
+#include "swrast/s_spantemp.h"
+#endif /* CHAN_TYPE == GL_UNSIGNED_BYTE */
+
+/* color index */
+#define NAME(PREFIX) PREFIX##_CI
+#define FORMAT GL_COLOR_INDEX8_EXT
+#define SPAN_VARS \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define INIT_PIXEL_PTR(P, X, Y) \
+ GLubyte *P = osmesa->rowaddr[Y] + (X)
+#define INC_PIXEL_PTR(P) P += 1
+#define STORE_PIXEL(DST, X, Y, VALUE) \
+ *DST = VALUE[0]
+#define FETCH_PIXEL(DST, SRC) \
+ DST = SRC[0]
+#include "swrast/s_spantemp.h"
+
+
+
+
+/**********************************************************************/
+/***** Optimized line rendering *****/
+/**********************************************************************/
+
+
+#if CHAN_TYPE == GL_FLOAT
+#define PACK_RGBA(DST, R, G, B, A) \
+do { \
+ (DST)[0] = MAX2( R, 0.0F ); \
+ (DST)[1] = MAX2( G, 0.0F ); \
+ (DST)[2] = MAX2( B, 0.0F ); \
+ (DST)[3] = CLAMP(A, 0.0F, CHAN_MAXF);\
+} while (0)
+#else
+#define PACK_RGBA(DST, R, G, B, A) \
+do { \
+ (DST)[osmesa->rInd] = R; \
+ (DST)[osmesa->gInd] = G; \
+ (DST)[osmesa->bInd] = B; \
+ (DST)[osmesa->aInd] = A; \
+} while (0)
+#endif
+
+#define PACK_RGB(DST, R, G, B) \
+do { \
+ (DST)[0] = R; \
+ (DST)[1] = G; \
+ (DST)[2] = B; \
+} while (0)
+
+#define PACK_BGR(DST, R, G, B) \
+do { \
+ (DST)[0] = B; \
+ (DST)[1] = G; \
+ (DST)[2] = R; \
+} while (0)
+
+#define PACK_RGB_565(DST, R, G, B) \
+do { \
+ (DST) = (((int) (R) << 8) & 0xf800) | (((int) (G) << 3) & 0x7e0) | ((int) (B) >> 3);\
+} while (0)
+
+#define UNPACK_RED(P) ( (P)[osmesa->rInd] )
+#define UNPACK_GREEN(P) ( (P)[osmesa->gInd] )
+#define UNPACK_BLUE(P) ( (P)[osmesa->bInd] )
+#define UNPACK_ALPHA(P) ( (P)[osmesa->aInd] )
+
+#define PIXELADDR1(X,Y) (osmesa->rowaddr[Y] + (X))
+#define PIXELADDR2(X,Y) (osmesa->rowaddr[Y] + 2 * (X))
+#define PIXELADDR3(X,Y) (osmesa->rowaddr[Y] + 3 * (X))
+#define PIXELADDR4(X,Y) (osmesa->rowaddr[Y] + 4 * (X))
+
+
+/*
+ * Draw a flat-shaded, RGB line into an osmesa buffer.
+ */
+#define NAME flat_rgba_line
+#define CLIP_HACK 1
+#define SETUP_CODE \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); \
+ const GLchan *color = vert1->color;
+
+#define PLOT(X, Y) \
+do { \
+ GLchan *p = PIXELADDR4(X, Y); \
+ PACK_RGBA(p, color[0], color[1], color[2], color[3]); \
+} while (0)
+
+#ifdef WIN32
+#include "..\swrast\s_linetemp.h"
+#else
+#include "swrast/s_linetemp.h"
+#endif
+
+
+
+/*
+ * Draw a flat-shaded, Z-less, RGB line into an osmesa buffer.
+ */
+#define NAME flat_rgba_z_line
+#define CLIP_HACK 1
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define SETUP_CODE \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); \
+ const GLchan *color = vert1->color;
+
+#define PLOT(X, Y) \
+do { \
+ if (Z < *zPtr) { \
+ GLchan *p = PIXELADDR4(X, Y); \
+ PACK_RGBA(p, color[RCOMP], color[GCOMP], \
+ color[BCOMP], color[ACOMP]); \
+ *zPtr = Z; \
+ } \
+} while (0)
+
+#ifdef WIN32
+#include "..\swrast\s_linetemp.h"
+#else
+#include "swrast/s_linetemp.h"
+#endif
+
+
+
+/*
+ * Analyze context state to see if we can provide a fast line drawing
+ * function, like those in lines.c. Otherwise, return NULL.
+ */
+static swrast_line_func
+osmesa_choose_line_function( GLcontext *ctx )
+{
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+ const SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ if (CHAN_BITS != 8) return NULL;
+ if (ctx->RenderMode != GL_RENDER) return NULL;
+ if (ctx->Line.SmoothFlag) return NULL;
+ if (ctx->Texture._EnabledUnits) return NULL;
+ if (ctx->Light.ShadeModel != GL_FLAT) return NULL;
+ if (ctx->Line.Width != 1.0F) return NULL;
+ if (ctx->Line.StippleFlag) return NULL;
+ if (ctx->Line.SmoothFlag) return NULL;
+ if (osmesa->format != OSMESA_RGBA &&
+ osmesa->format != OSMESA_BGRA &&
+ osmesa->format != OSMESA_ARGB) return NULL;
+
+ if (swrast->_RasterMask==DEPTH_BIT
+ && ctx->Depth.Func==GL_LESS
+ && ctx->Depth.Mask==GL_TRUE
+ && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) {
+ return (swrast_line_func) flat_rgba_z_line;
+ }
+
+ if (swrast->_RasterMask == 0) {
+ return (swrast_line_func) flat_rgba_line;
+ }
+
+ return (swrast_line_func) NULL;
+}
+
+
+/**********************************************************************/
+/***** Optimized triangle rendering *****/
+/**********************************************************************/
+
+
+/*
+ * Smooth-shaded, z-less triangle, RGBA color.
+ */
+#define NAME smooth_rgba_z_triangle
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define INTERP_RGB 1
+#define INTERP_ALPHA 1
+#define SETUP_CODE \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+#define RENDER_SPAN( span ) \
+ GLuint i; \
+ GLchan *img = PIXELADDR4(span.x, span.y); \
+ for (i = 0; i < span.end; i++, img += 4) { \
+ const GLdepth z = FixedToDepth(span.z); \
+ if (z < zRow[i]) { \
+ PACK_RGBA(img, FixedToChan(span.red), \
+ FixedToChan(span.green), FixedToChan(span.blue), \
+ FixedToChan(span.alpha)); \
+ zRow[i] = z; \
+ } \
+ span.red += span.redStep; \
+ span.green += span.greenStep; \
+ span.blue += span.blueStep; \
+ span.alpha += span.alphaStep; \
+ span.z += span.zStep; \
+ }
+#ifdef WIN32
+#include "..\swrast\s_tritemp.h"
+#else
+#include "swrast/s_tritemp.h"
+#endif
+
+
+
+/*
+ * Flat-shaded, z-less triangle, RGBA color.
+ */
+#define NAME flat_rgba_z_triangle
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define SETUP_CODE \
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); \
+ GLuint pixel; \
+ PACK_RGBA((GLchan *) &pixel, v2->color[0], v2->color[1], \
+ v2->color[2], v2->color[3]);
+
+#define RENDER_SPAN( span ) \
+ GLuint i; \
+ GLuint *img = (GLuint *) PIXELADDR4(span.x, span.y); \
+ for (i = 0; i < span.end; i++) { \
+ const GLdepth z = FixedToDepth(span.z); \
+ if (z < zRow[i]) { \
+ img[i] = pixel; \
+ zRow[i] = z; \
+ } \
+ span.z += span.zStep; \
+ }
+#ifdef WIN32
+#include "..\swrast\s_tritemp.h"
+#else
+#include "swrast/s_tritemp.h"
+#endif
+
+
+
+/*
+ * Return pointer to an accelerated triangle function if possible.
+ */
+static swrast_tri_func
+osmesa_choose_triangle_function( GLcontext *ctx )
+{
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+ const SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ if (CHAN_BITS != 8) return (swrast_tri_func) NULL;
+ if (ctx->RenderMode != GL_RENDER) return (swrast_tri_func) NULL;
+ if (ctx->Polygon.SmoothFlag) return (swrast_tri_func) NULL;
+ if (ctx->Polygon.StippleFlag) return (swrast_tri_func) NULL;
+ if (ctx->Texture._EnabledUnits) return (swrast_tri_func) NULL;
+ if (osmesa->format != OSMESA_RGBA &&
+ osmesa->format != OSMESA_BGRA &&
+ osmesa->format != OSMESA_ARGB) return (swrast_tri_func) NULL;
+ if (ctx->Polygon.CullFlag &&
+ ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
+ return (swrast_tri_func) NULL;
+
+ if (swrast->_RasterMask == DEPTH_BIT &&
+ ctx->Depth.Func == GL_LESS &&
+ ctx->Depth.Mask == GL_TRUE &&
+ ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) {
+ if (ctx->Light.ShadeModel == GL_SMOOTH) {
+ return (swrast_tri_func) smooth_rgba_z_triangle;
+ }
+ else {
+ return (swrast_tri_func) flat_rgba_z_triangle;
+ }
+ }
+ return (swrast_tri_func) NULL;
+}
+
+
+
+/* Override for the swrast triangle-selection function. Try to use one
+ * of our internal triangle functions, otherwise fall back to the
+ * standard swrast functions.
+ */
+static void
+osmesa_choose_triangle( GLcontext *ctx )
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ swrast->Triangle = osmesa_choose_triangle_function( ctx );
+ if (!swrast->Triangle)
+ _swrast_choose_triangle( ctx );
+}
+
+static void
+osmesa_choose_line( GLcontext *ctx )
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ swrast->Line = osmesa_choose_line_function( ctx );
+ if (!swrast->Line)
+ _swrast_choose_line( ctx );
+}
+
+
+#define OSMESA_NEW_LINE (_NEW_LINE | \
+ _NEW_TEXTURE | \
+ _NEW_LIGHT | \
+ _NEW_DEPTH | \
+ _NEW_RENDERMODE | \
+ _SWRAST_NEW_RASTERMASK)
+
+#define OSMESA_NEW_TRIANGLE (_NEW_POLYGON | \
+ _NEW_TEXTURE | \
+ _NEW_LIGHT | \
+ _NEW_DEPTH | \
+ _NEW_RENDERMODE | \
+ _SWRAST_NEW_RASTERMASK)
+
+
+/**
+ * Don't use _mesa_delete_renderbuffer since we can't free rb->Data.
+ */
+static void
+osmesa_delete_renderbuffer(struct gl_renderbuffer *rb)
+{
+ _mesa_free(rb);
+}
+
+
+/**
+ * Allocate renderbuffer storage. We don't actually allocate any storage
+ * since we're using a user-provided buffer.
+ * Just set up all the gl_renderbuffer methods.
+ */
+static GLboolean
+osmesa_renderbuffer_storage(GLcontext *ctx, struct gl_renderbuffer *rb,
+ GLenum internalFormat, GLuint width, GLuint height)
+{
+ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx);
+
+ if (osmesa->format == OSMESA_RGBA) {
+ rb->GetRow = get_row_RGBA;
+ rb->GetValues = get_values_RGBA;
+ rb->PutRow = put_row_RGBA;
+ rb->PutRowRGB = put_row_rgb_RGBA;
+ rb->PutMonoRow = put_mono_row_RGBA;
+ rb->PutValues = put_values_RGBA;
+ rb->PutMonoValues = put_mono_values_RGBA;
+ }
+ else if (osmesa->format == OSMESA_BGRA) {
+ rb->GetRow = get_row_BGRA;
+ rb->GetValues = get_values_BGRA;
+ rb->PutRow = put_row_BGRA;
+ rb->PutRowRGB = put_row_rgb_BGRA;
+ rb->PutMonoRow = put_mono_row_BGRA;
+ rb->PutValues = put_values_BGRA;
+ rb->PutMonoValues = put_mono_values_BGRA;
+ }
+ else if (osmesa->format == OSMESA_ARGB) {
+ rb->GetRow = get_row_ARGB;
+ rb->GetValues = get_values_ARGB;
+ rb->PutRow = put_row_ARGB;
+ rb->PutRowRGB = put_row_rgb_ARGB;
+ rb->PutMonoRow = put_mono_row_ARGB;
+ rb->PutValues = put_values_ARGB;
+ rb->PutMonoValues = put_mono_values_ARGB;
+ }
+ else if (osmesa->format == OSMESA_RGB) {
+ rb->GetRow = get_row_RGB;
+ rb->GetValues = get_values_RGB;
+ rb->PutRow = put_row_RGB;
+ rb->PutRowRGB = put_row_rgb_RGB;
+ rb->PutMonoRow = put_mono_row_RGB;
+ rb->PutValues = put_values_RGB;
+ rb->PutMonoValues = put_mono_values_RGB;
+ }
+ else if (osmesa->format == OSMESA_BGR) {
+ rb->GetRow = get_row_BGR;
+ rb->GetValues = get_values_BGR;
+ rb->PutRow = put_row_BGR;
+ rb->PutRowRGB = put_row_rgb_BGR;
+ rb->PutMonoRow = put_mono_row_BGR;
+ rb->PutValues = put_values_BGR;
+ rb->PutMonoValues = put_mono_values_BGR;
+ }
+#if CHAN_TYPE == GL_UNSIGNED_BYTE
+ else if (osmesa->format == OSMESA_RGB_565) {
+ rb->GetRow = get_row_RGB_565;
+ rb->GetValues = get_values_RGB_565;
+ rb->PutRow = put_row_RGB_565;
+ rb->PutRow = put_row_rgb_RGB_565;
+ rb->PutMonoRow = put_mono_row_RGB_565;
+ rb->PutValues = put_values_RGB_565;
+ rb->PutMonoValues = put_mono_values_RGB_565;
+ }
+#endif
+ else if (osmesa->format == OSMESA_COLOR_INDEX) {
+ rb->GetRow = get_row_CI;
+ rb->GetValues = get_values_CI;
+ rb->PutRow = put_row_CI;
+ rb->PutMonoRow = put_mono_row_CI;
+ rb->PutValues = put_values_CI;
+ rb->PutMonoValues = put_mono_values_CI;
+ }
+ else {
+ _mesa_problem(ctx, "bad pixel format in osmesa renderbuffer_storage");
+ }
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Allocate a new renderbuffer tpo describe the user-provided color buffer.
+ */
+static struct gl_renderbuffer *
+new_osmesa_renderbuffer(GLenum format)
+{
+ struct gl_renderbuffer *rb = CALLOC_STRUCT(gl_renderbuffer);
+ if (rb) {
+ const GLuint name = 0;
+ _mesa_init_renderbuffer(rb, name);
+
+ rb->Delete = osmesa_delete_renderbuffer;
+ rb->AllocStorage = osmesa_renderbuffer_storage;
+
+ if (format == OSMESA_COLOR_INDEX) {
+ rb->_BaseFormat = GL_COLOR_INDEX;
+ rb->InternalFormat = GL_COLOR_INDEX;
+ rb->DataType = GL_UNSIGNED_BYTE;
+ }
+ else {
+ rb->_BaseFormat = GL_RGBA;
+ rb->InternalFormat = GL_RGBA;
+ rb->DataType = CHAN_TYPE;
+ }
+ }
+ return rb;
+}
+
+
+
+/**********************************************************************/
+/***** Public Functions *****/
+/**********************************************************************/
+
+
+/*
+ * Create an Off-Screen Mesa rendering context. The only attribute needed is
+ * an RGBA vs Color-Index mode flag.
+ *
+ * Input: format - either GL_RGBA or GL_COLOR_INDEX
+ * sharelist - specifies another OSMesaContext with which to share
+ * display lists. NULL indicates no sharing.
+ * Return: an OSMesaContext or 0 if error
+ */
+GLAPI OSMesaContext GLAPIENTRY
+OSMesaCreateContext( GLenum format, OSMesaContext sharelist )
+{
+ const GLint accumBits = (format == OSMESA_COLOR_INDEX) ? 0 : 16;
+ return OSMesaCreateContextExt(format, DEFAULT_SOFTWARE_DEPTH_BITS,
+ 8, accumBits, sharelist);
+}
+
+
+
+/*
+ * New in Mesa 3.5
+ *
+ * Create context and specify size of ancillary buffers.
+ */
+GLAPI OSMesaContext GLAPIENTRY
+OSMesaCreateContextExt( GLenum format, GLint depthBits, GLint stencilBits,
+ GLint accumBits, OSMesaContext sharelist )
+{
+ OSMesaContext osmesa;
+ struct dd_function_table functions;
+ GLint rshift, gshift, bshift, ashift;
+ GLint rind, gind, bind, aind;
+ GLint indexBits = 0, redBits = 0, greenBits = 0, blueBits = 0, alphaBits =0;
+ GLboolean rgbmode;
+ const GLuint i4 = 1;
+ const GLubyte *i1 = (GLubyte *) &i4;
+ const GLint little_endian = *i1;
+
+ rind = gind = bind = aind = 0;
+ if (format==OSMESA_COLOR_INDEX) {
+ indexBits = 8;
+ rshift = gshift = bshift = ashift = 0;
+ rgbmode = GL_FALSE;
+ }
+ else if (format==OSMESA_RGBA) {
+ indexBits = 0;
+ redBits = CHAN_BITS;
+ greenBits = CHAN_BITS;
+ blueBits = CHAN_BITS;
+ alphaBits = CHAN_BITS;
+ rind = 0;
+ gind = 1;
+ bind = 2;
+ aind = 3;
+ if (little_endian) {
+ rshift = 0;
+ gshift = 8;
+ bshift = 16;
+ ashift = 24;
+ }
+ else {
+ rshift = 24;
+ gshift = 16;
+ bshift = 8;
+ ashift = 0;
+ }
+ rgbmode = GL_TRUE;
+ }
+ else if (format==OSMESA_BGRA) {
+ indexBits = 0;
+ redBits = CHAN_BITS;
+ greenBits = CHAN_BITS;
+ blueBits = CHAN_BITS;
+ alphaBits = CHAN_BITS;
+ bind = 0;
+ gind = 1;
+ rind = 2;
+ aind = 3;
+ if (little_endian) {
+ bshift = 0;
+ gshift = 8;
+ rshift = 16;
+ ashift = 24;
+ }
+ else {
+ bshift = 24;
+ gshift = 16;
+ rshift = 8;
+ ashift = 0;
+ }
+ rgbmode = GL_TRUE;
+ }
+ else if (format==OSMESA_ARGB) {
+ indexBits = 0;
+ redBits = CHAN_BITS;
+ greenBits = CHAN_BITS;
+ blueBits = CHAN_BITS;
+ alphaBits = CHAN_BITS;
+ aind = 0;
+ rind = 1;
+ gind = 2;
+ bind = 3;
+ if (little_endian) {
+ ashift = 0;
+ rshift = 8;
+ gshift = 16;
+ bshift = 24;
+ }
+ else {
+ ashift = 24;
+ rshift = 16;
+ gshift = 8;
+ bshift = 0;
+ }
+ rgbmode = GL_TRUE;
+ }
+ else if (format==OSMESA_RGB) {
+ indexBits = 0;
+ redBits = CHAN_BITS;
+ greenBits = CHAN_BITS;
+ blueBits = CHAN_BITS;
+ alphaBits = 0;
+ bshift = 0;
+ gshift = 8;
+ rshift = 16;
+ ashift = 24;
+ rind = 0;
+ gind = 1;
+ bind = 2;
+ rgbmode = GL_TRUE;
+ }
+ else if (format==OSMESA_BGR) {
+ indexBits = 0;
+ redBits = CHAN_BITS;
+ greenBits = CHAN_BITS;
+ blueBits = CHAN_BITS;
+ alphaBits = 0;
+ bshift = 0;
+ gshift = 8;
+ rshift = 16;
+ ashift = 24;
+ rind = 2;
+ gind = 1;
+ bind = 0;
+ rgbmode = GL_TRUE;
+ }
+#if CHAN_TYPE == GL_UNSIGNED_BYTE
+ else if (format==OSMESA_RGB_565) {
+ indexBits = 0;
+ redBits = 5;
+ greenBits = 6;
+ blueBits = 5;
+ alphaBits = 0;
+ rshift = 11;
+ gshift = 5;
+ bshift = 0;
+ ashift = 0;
+ rind = 0; /* not used */
+ gind = 0;
+ bind = 0;
+ rgbmode = GL_TRUE;
+ }
+#endif
+ else {
+ return NULL;
+ }
+
+ osmesa = (OSMesaContext) CALLOC_STRUCT(osmesa_context);
+ if (osmesa) {
+ osmesa->gl_visual = _mesa_create_visual( rgbmode,
+ GL_FALSE, /* double buffer */
+ GL_FALSE, /* stereo */
+ redBits,
+ greenBits,
+ blueBits,
+ alphaBits,
+ indexBits,
+ depthBits,
+ stencilBits,
+ accumBits,
+ accumBits,
+ accumBits,
+ alphaBits ? accumBits : 0,
+ 1 /* num samples */
+ );
+ if (!osmesa->gl_visual) {
+ FREE(osmesa);
+ return NULL;
+ }
+
+ /* Initialize device driver function table */
+ _mesa_init_driver_functions(&functions);
+ /* override with our functions */
+ functions.GetString = get_string;
+ functions.UpdateState = osmesa_update_state;
+ functions.GetBufferSize = get_buffer_size;
+
+ if (!_mesa_initialize_context(&osmesa->mesa,
+ osmesa->gl_visual,
+ sharelist ? &sharelist->mesa
+ : (GLcontext *) NULL,
+ &functions, (void *) osmesa)) {
+ _mesa_destroy_visual( osmesa->gl_visual );
+ FREE(osmesa);
+ return NULL;
+ }
+
+ _mesa_enable_sw_extensions(&(osmesa->mesa));
+ _mesa_enable_1_3_extensions(&(osmesa->mesa));
+ _mesa_enable_1_4_extensions(&(osmesa->mesa));
+ _mesa_enable_1_5_extensions(&(osmesa->mesa));
+
+ osmesa->gl_buffer = _mesa_create_framebuffer(osmesa->gl_visual);
+ if (!osmesa->gl_buffer) {
+ _mesa_destroy_visual( osmesa->gl_visual );
+ _mesa_free_context_data( &osmesa->mesa );
+ FREE(osmesa);
+ return NULL;
+ }
+
+ /* create front color buffer in user-provided memory (no back buffer) */
+ _mesa_add_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT,
+ new_osmesa_renderbuffer(format));
+ _mesa_add_soft_renderbuffers(osmesa->gl_buffer,
+ GL_FALSE, /* color */
+ osmesa->gl_visual->haveDepthBuffer,
+ osmesa->gl_visual->haveStencilBuffer,
+ osmesa->gl_visual->haveAccumBuffer,
+ GL_FALSE, /* alpha */
+ GL_FALSE /* aux */ );
+
+ osmesa->format = format;
+ osmesa->buffer = NULL;
+ osmesa->width = 0;
+ osmesa->height = 0;
+ osmesa->userRowLength = 0;
+ osmesa->rowlength = 0;
+ osmesa->yup = GL_TRUE;
+ osmesa->rshift = rshift;
+ osmesa->gshift = gshift;
+ osmesa->bshift = bshift;
+ osmesa->ashift = ashift;
+ osmesa->rInd = rind;
+ osmesa->gInd = gind;
+ osmesa->bInd = bind;
+ osmesa->aInd = aind;
+
+ /* Initialize the software rasterizer and helper modules. */
+ {
+ GLcontext *ctx = &osmesa->mesa;
+ SWcontext *swrast;
+ struct swrast_device_driver *swdd;
+ TNLcontext *tnl;
+
+ if (!_swrast_CreateContext( ctx ) ||
+ !_ac_CreateContext( ctx ) ||
+ !_tnl_CreateContext( ctx ) ||
+ !_swsetup_CreateContext( ctx )) {
+ _mesa_destroy_visual(osmesa->gl_visual);
+ _mesa_free_context_data(ctx);
+ _mesa_free(osmesa);
+ return NULL;
+ }
+
+ _swsetup_Wakeup( ctx );
+
+ /* use default TCL pipeline */
+ tnl = TNL_CONTEXT(ctx);
+ tnl->Driver.RunPipeline = _tnl_run_pipeline;
+
+ swdd = _swrast_GetDeviceDriverReference( ctx );
+ swdd->SetBuffer = set_buffer;
+
+ /* Extend the software rasterizer with our optimized line and triangle
+ * drawing functions.
+ */
+ swrast = SWRAST_CONTEXT( ctx );
+ swrast->choose_line = osmesa_choose_line;
+ swrast->choose_triangle = osmesa_choose_triangle;
+ swrast->invalidate_line |= OSMESA_NEW_LINE;
+ swrast->invalidate_triangle |= OSMESA_NEW_TRIANGLE;
+ }
+ }
+ return osmesa;
+}
+
+
+/*
+ * Destroy an Off-Screen Mesa rendering context.
+ *
+ * Input: ctx - the context to destroy
+ */
+GLAPI void GLAPIENTRY
+OSMesaDestroyContext( OSMesaContext ctx )
+{
+ if (ctx) {
+ _swsetup_DestroyContext( &ctx->mesa );
+ _tnl_DestroyContext( &ctx->mesa );
+ _ac_DestroyContext( &ctx->mesa );
+ _swrast_DestroyContext( &ctx->mesa );
+
+ _mesa_destroy_visual( ctx->gl_visual );
+ _mesa_destroy_framebuffer( ctx->gl_buffer );
+ _mesa_free_context_data( &ctx->mesa );
+ FREE( ctx );
+ }
+}
+
+
+/*
+ * Recompute the values of the context's rowaddr array.
+ */
+static void
+compute_row_addresses( OSMesaContext ctx )
+{
+ GLint bytesPerPixel, bytesPerRow, i;
+ GLubyte *origin = (GLubyte *) ctx->buffer;
+
+ if (ctx->format == OSMESA_COLOR_INDEX) {
+ /* CI mode */
+ bytesPerPixel = 1 * sizeof(GLchan);
+ }
+ else if ((ctx->format == OSMESA_RGB) || (ctx->format == OSMESA_BGR)) {
+ /* RGB mode */
+ bytesPerPixel = 3 * sizeof(GLchan);
+ }
+ else if (ctx->format == OSMESA_RGB_565) {
+ /* 5/6/5 RGB pixel in 16 bits */
+ bytesPerPixel = 2;
+ }
+ else {
+ /* RGBA mode */
+ bytesPerPixel = 4 * sizeof(GLchan);
+ }
+
+ bytesPerRow = ctx->rowlength * bytesPerPixel;
+
+ if (ctx->yup) {
+ /* Y=0 is bottom line of window */
+ for (i = 0; i < MAX_HEIGHT; i++) {
+ ctx->rowaddr[i] = (GLchan *) ((GLubyte *) origin + i * bytesPerRow);
+ }
+ }
+ else {
+ /* Y=0 is top line of window */
+ for (i = 0; i < MAX_HEIGHT; i++) {
+ GLint j = ctx->height - i - 1;
+ ctx->rowaddr[i] = (GLchan *) ((GLubyte *) origin + j * bytesPerRow);
+ }
+ }
+}
+
+
+/*
+ * Bind an OSMesaContext to an image buffer. The image buffer is just a
+ * block of memory which the client provides. Its size must be at least
+ * as large as width*height*sizeof(type). Its address should be a multiple
+ * of 4 if using RGBA mode.
+ *
+ * Image data is stored in the order of glDrawPixels: row-major order
+ * with the lower-left image pixel stored in the first array position
+ * (ie. bottom-to-top).
+ *
+ * If the context's viewport hasn't been initialized yet, it will now be
+ * initialized to (0,0,width,height).
+ *
+ * Input: ctx - the rendering context
+ * buffer - the image buffer memory
+ * type - data type for pixel components
+ * Normally, only GL_UNSIGNED_BYTE and GL_UNSIGNED_SHORT_5_6_5
+ * are supported. But if Mesa's been compiled with CHAN_BITS==16
+ * then type must be GL_UNSIGNED_SHORT. And if Mesa's been build
+ * with CHAN_BITS==32 then type must be GL_FLOAT.
+ * width, height - size of image buffer in pixels, at least 1
+ * Return: GL_TRUE if success, GL_FALSE if error because of invalid ctx,
+ * invalid buffer address, invalid type, width<1, height<1,
+ * width>internal limit or height>internal limit.
+ */
+GLAPI GLboolean GLAPIENTRY
+OSMesaMakeCurrent( OSMesaContext ctx, void *buffer, GLenum type,
+ GLsizei width, GLsizei height )
+{
+ if (!ctx || !buffer ||
+ width < 1 || height < 1 ||
+ width > MAX_WIDTH || height > MAX_HEIGHT) {
+ return GL_FALSE;
+ }
+
+ if (ctx->format == OSMESA_RGB_565) {
+ if (type != GL_UNSIGNED_SHORT_5_6_5)
+ return GL_FALSE;
+ }
+ else if (type != CHAN_TYPE) {
+ return GL_FALSE;
+ }
+
+ /* Need to set these before calling _mesa_make_current() since the first
+ * time the context is bound, _mesa_make_current() will call our
+ * get_buffer_size() function to initialize the viewport. These are the
+ * values returned by get_buffer_size():
+ */
+ ctx->buffer = buffer;
+ ctx->width = width;
+ ctx->height = height;
+
+ osmesa_update_state( &ctx->mesa, 0 );
+ _mesa_make_current( &ctx->mesa, ctx->gl_buffer, ctx->gl_buffer );
+
+ if (ctx->userRowLength)
+ ctx->rowlength = ctx->userRowLength;
+ else
+ ctx->rowlength = width;
+
+ compute_row_addresses( ctx );
+
+ /* this will make ensure we recognize the new buffer size */
+ _mesa_resize_framebuffer(&ctx->mesa, ctx->gl_buffer, width, height);
+
+ /* Added by Gerk Huisma: */
+ _tnl_MakeCurrent( &ctx->mesa, ctx->mesa.DrawBuffer,
+ ctx->mesa.ReadBuffer );
+
+ return GL_TRUE;
+}
+
+
+
+GLAPI OSMesaContext GLAPIENTRY
+OSMesaGetCurrentContext( void )
+{
+ GLcontext *ctx = _mesa_get_current_context();
+ if (ctx)
+ return (OSMesaContext) ctx;
+ else
+ return NULL;
+}
+
+
+
+GLAPI void GLAPIENTRY
+OSMesaPixelStore( GLint pname, GLint value )
+{
+ OSMesaContext osmesa = OSMesaGetCurrentContext();
+
+ switch (pname) {
+ case OSMESA_ROW_LENGTH:
+ if (value<0) {
+ _mesa_error( &osmesa->mesa, GL_INVALID_VALUE,
+ "OSMesaPixelStore(value)" );
+ return;
+ }
+ osmesa->userRowLength = value;
+ osmesa->rowlength = value ? value : osmesa->width;
+ break;
+ case OSMESA_Y_UP:
+ osmesa->yup = value ? GL_TRUE : GL_FALSE;
+ break;
+ default:
+ _mesa_error( &osmesa->mesa, GL_INVALID_ENUM, "OSMesaPixelStore(pname)" );
+ return;
+ }
+
+ compute_row_addresses( osmesa );
+}
+
+
+GLAPI void GLAPIENTRY
+OSMesaGetIntegerv( GLint pname, GLint *value )
+{
+ OSMesaContext osmesa = OSMesaGetCurrentContext();
+
+ switch (pname) {
+ case OSMESA_WIDTH:
+ *value = osmesa->width;
+ return;
+ case OSMESA_HEIGHT:
+ *value = osmesa->height;
+ return;
+ case OSMESA_FORMAT:
+ *value = osmesa->format;
+ return;
+ case OSMESA_TYPE:
+ *value = CHAN_TYPE;
+ return;
+ case OSMESA_ROW_LENGTH:
+ *value = osmesa->userRowLength;
+ return;
+ case OSMESA_Y_UP:
+ *value = osmesa->yup;
+ return;
+ case OSMESA_MAX_WIDTH:
+ *value = MAX_WIDTH;
+ return;
+ case OSMESA_MAX_HEIGHT:
+ *value = MAX_HEIGHT;
+ return;
+ default:
+ _mesa_error(&osmesa->mesa, GL_INVALID_ENUM, "OSMesaGetIntergerv(pname)");
+ return;
+ }
+}
+
+/*
+ * Return the depth buffer associated with an OSMesa context.
+ * Input: c - the OSMesa context
+ * Output: width, height - size of buffer in pixels
+ * bytesPerValue - bytes per depth value (2 or 4)
+ * buffer - pointer to depth buffer values
+ * Return: GL_TRUE or GL_FALSE to indicate success or failure.
+ */
+GLAPI GLboolean GLAPIENTRY
+OSMesaGetDepthBuffer( OSMesaContext c, GLint *width, GLint *height,
+ GLint *bytesPerValue, void **buffer )
+{
+ struct gl_renderbuffer *rb = NULL;
+
+ if (c->gl_buffer)
+ rb = c->gl_buffer->Attachment[BUFFER_DEPTH].Renderbuffer;
+
+ if (!rb || !rb->Data) {
+ /*if ((!c->gl_buffer) || (!c->gl_buffer->DepthBuffer)) {*/
+ *width = 0;
+ *height = 0;
+ *bytesPerValue = 0;
+ *buffer = 0;
+ return GL_FALSE;
+ }
+ else {
+ *width = c->gl_buffer->Width;
+ *height = c->gl_buffer->Height;
+ if (c->gl_visual->depthBits <= 16)
+ *bytesPerValue = sizeof(GLushort);
+ else
+ *bytesPerValue = sizeof(GLuint);
+ *buffer = rb->Data;
+ return GL_TRUE;
+ }
+}
+
+/*
+ * Return the color buffer associated with an OSMesa context.
+ * Input: c - the OSMesa context
+ * Output: width, height - size of buffer in pixels
+ * format - the pixel format (OSMESA_FORMAT)
+ * buffer - pointer to color buffer values
+ * Return: GL_TRUE or GL_FALSE to indicate success or failure.
+ */
+GLAPI GLboolean GLAPIENTRY
+OSMesaGetColorBuffer( OSMesaContext c, GLint *width,
+ GLint *height, GLint *format, void **buffer )
+{
+ if (!c->buffer) {
+ *width = 0;
+ *height = 0;
+ *format = 0;
+ *buffer = 0;
+ return GL_FALSE;
+ }
+ else {
+ *width = c->width;
+ *height = c->height;
+ *format = c->format;
+ *buffer = c->buffer;
+ return GL_TRUE;
+ }
+}
+
+
+struct name_function
+{
+ const char *Name;
+ OSMESAproc Function;
+};
+
+static struct name_function functions[] = {
+ { "OSMesaCreateContext", (OSMESAproc) OSMesaCreateContext },
+ { "OSMesaCreateContextExt", (OSMESAproc) OSMesaCreateContextExt },
+ { "OSMesaDestroyContext", (OSMESAproc) OSMesaDestroyContext },
+ { "OSMesaMakeCurrent", (OSMESAproc) OSMesaMakeCurrent },
+ { "OSMesaGetCurrentContext", (OSMESAproc) OSMesaGetCurrentContext },
+ { "OSMesaPixelsStore", (OSMESAproc) OSMesaPixelStore },
+ { "OSMesaGetIntegerv", (OSMESAproc) OSMesaGetIntegerv },
+ { "OSMesaGetDepthBuffer", (OSMESAproc) OSMesaGetDepthBuffer },
+ { "OSMesaGetColorBuffer", (OSMESAproc) OSMesaGetColorBuffer },
+ { "OSMesaGetProcAddress", (OSMESAproc) OSMesaGetProcAddress },
+ { NULL, NULL }
+};
+
+
+GLAPI OSMESAproc GLAPIENTRY
+OSMesaGetProcAddress( const char *funcName )
+{
+ int i;
+ for (i = 0; functions[i].Name; i++) {
+ if (_mesa_strcmp(functions[i].Name, funcName) == 0)
+ return functions[i].Function;
+ }
+ return _glapi_get_proc_address(funcName);
+}
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.def b/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.def
new file mode 100644
index 000000000..a92a30f35
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.def
@@ -0,0 +1,13 @@
+DESCRIPTION 'Mesa OSMesa lib for Win32'
+VERSION 4.1
+
+EXPORTS
+ OSMesaCreateContext
+ OSMesaCreateContextExt
+ OSMesaDestroyContext
+ OSMesaMakeCurrent
+ OSMesaGetCurrentContext
+ OSMesaPixelStore
+ OSMesaGetIntegerv
+ OSMesaGetDepthBuffer
+ OSMesaGetColorBuffer