From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Mon, 10 Oct 2011 17:43:39 +0200 Subject: Imported nx-X11-3.1.0-1.tar.gz Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository --- .../Mesa/src/mesa/drivers/osmesa/Makefile.win | 39 + .../Mesa/src/mesa/drivers/osmesa/descrip.mms | 41 + .../extras/Mesa/src/mesa/drivers/osmesa/osmesa.c | 1333 ++++++++++++++++++++ .../extras/Mesa/src/mesa/drivers/osmesa/osmesa.def | 13 + 4 files changed, 1426 insertions(+) create mode 100644 nx-X11/extras/Mesa/src/mesa/drivers/osmesa/Makefile.win create mode 100644 nx-X11/extras/Mesa/src/mesa/drivers/osmesa/descrip.mms create mode 100644 nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.c create mode 100644 nx-X11/extras/Mesa/src/mesa/drivers/osmesa/osmesa.def (limited to 'nx-X11/extras/Mesa/src/mesa/drivers/osmesa') 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 + +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 -- cgit v1.2.3