diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/osmesa/osmesa.c | 825 |
1 files changed, 591 insertions, 234 deletions
diff --git a/src/mesa/drivers/osmesa/osmesa.c b/src/mesa/drivers/osmesa/osmesa.c index f1baa866d8..9dccea9205 100644 --- a/src/mesa/drivers/osmesa/osmesa.c +++ b/src/mesa/drivers/osmesa/osmesa.c @@ -1,6 +1,6 @@ /* * Mesa 3-D graphics library - * Version: 6.5 + * Version: 6.5.1 * * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. * @@ -38,7 +38,6 @@ #include "context.h" #include "extensions.h" #include "framebuffer.h" -#include "fbobject.h" #include "imports.h" #include "mtypes.h" #include "renderbuffer.h" @@ -46,7 +45,6 @@ #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" @@ -56,32 +54,32 @@ -/* - * 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. +/** + * OSMesa rendering context, derived from core Mesa GLcontext. */ -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 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 */ +struct osmesa_context +{ + GLcontext mesa; /*< Base class - this must be first */ + GLvisual *gl_visual; /*< Describes the buffers */ + struct gl_renderbuffer *rb; /*< The user's colorbuffer */ + GLframebuffer *gl_buffer; /*< The framebuffer, containing user's rb */ + GLenum format; /*< User-specified context format */ + GLint width, height; /*< size of image buffer */ + GLint rowlength; /*< number of pixels per row */ + GLint userRowLength; /*< user-specified number of pixels per row */ + GLint rInd, gInd, bInd, aInd;/*< index offsets for RGBA formats */ + GLvoid *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)) - +static INLINE OSMesaContext +OSMESA_CONTEXT(GLcontext *ctx) +{ + /* Just cast, since we're using structure containment */ + return (OSMesaContext) ctx; +} /**********************************************************************/ @@ -119,7 +117,7 @@ osmesa_update_state( GLcontext *ctx, GLuint new_state ) } -/* +/** * Just return the current buffer size. * There's no window to track the size of. */ @@ -141,26 +139,39 @@ get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) /***** Read/write spans/arrays of pixels *****/ /**********************************************************************/ -/* RGBA */ -#define NAME(PREFIX) PREFIX##_RGBA -#define FORMAT GL_RGBA +/* 8-bit RGBA */ +#define NAME(PREFIX) PREFIX##_RGBA8 +#define RB_TYPE GLubyte #define SPAN_VARS \ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); #define INIT_PIXEL_PTR(P, X, Y) \ - GLchan *P = osmesa->rowaddr[Y] + 4 * (X) + GLubyte *P = (GLubyte *) 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) + 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] = MAX2((VALUE[RCOMP]), 0.0F); \ - DST[1] = MAX2((VALUE[GCOMP]), 0.0F); \ - DST[2] = MAX2((VALUE[BCOMP]), 0.0F); \ - DST[3] = CHAN_MAXF -#else + DST[0] = VALUE[RCOMP]; \ + DST[1] = VALUE[GCOMP]; \ + DST[2] = VALUE[BCOMP]; \ + DST[3] = 255 +#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" + +/* 16-bit RGBA */ +#define NAME(PREFIX) PREFIX##_RGBA16 +#define RB_TYPE GLushort +#define SPAN_VARS \ + const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); +#define INIT_PIXEL_PTR(P, X, Y) \ + GLushort *P = (GLushort *) osmesa->rowaddr[Y] + 4 * (X) +#define INC_PIXEL_PTR(P) P += 4 #define STORE_PIXEL(DST, X, Y, VALUE) \ DST[0] = VALUE[RCOMP]; \ DST[1] = VALUE[GCOMP]; \ @@ -170,8 +181,32 @@ get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) DST[0] = VALUE[RCOMP]; \ DST[1] = VALUE[GCOMP]; \ DST[2] = VALUE[BCOMP]; \ - DST[3] = CHAN_MAX -#endif + DST[3] = 65535 +#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" + +/* 32-bit RGBA */ +#define NAME(PREFIX) PREFIX##_RGBA32 +#define RB_TYPE GLfloat +#define SPAN_VARS \ + const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); +#define INIT_PIXEL_PTR(P, X, Y) \ + GLfloat *P = (GLfloat *) osmesa->rowaddr[Y] + 4 * (X) +#define INC_PIXEL_PTR(P) P += 4 +#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, 1.0F) +#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] = 1.0F #define FETCH_PIXEL(DST, SRC) \ DST[RCOMP] = SRC[0]; \ DST[GCOMP] = SRC[1]; \ @@ -179,13 +214,39 @@ get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) DST[ACOMP] = SRC[3] #include "swrast/s_spantemp.h" -/* BGRA */ -#define NAME(PREFIX) PREFIX##_BGRA -#define FORMAT GL_RGBA + +/* 8-bit BGRA */ +#define NAME(PREFIX) PREFIX##_BGRA8 +#define RB_TYPE GLubyte +#define SPAN_VARS \ + const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); +#define INIT_PIXEL_PTR(P, X, Y) \ + GLubyte *P = (GLubyte *) 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] = 255 +#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" + +/* 16-bit BGRA */ +#define NAME(PREFIX) PREFIX##_BGRA16 +#define RB_TYPE GLushort #define SPAN_VARS \ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); #define INIT_PIXEL_PTR(P, X, Y) \ - GLchan *P = osmesa->rowaddr[Y] + 4 * (X) + GLushort *P = (GLushort *) osmesa->rowaddr[Y] + 4 * (X) #define INC_PIXEL_PTR(P) P += 4 #define STORE_PIXEL(DST, X, Y, VALUE) \ DST[2] = VALUE[RCOMP]; \ @@ -196,7 +257,7 @@ get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) DST[2] = VALUE[RCOMP]; \ DST[1] = VALUE[GCOMP]; \ DST[0] = VALUE[BCOMP]; \ - DST[3] = CHAN_MAX + DST[3] = 65535 #define FETCH_PIXEL(DST, SRC) \ DST[RCOMP] = SRC[2]; \ DST[GCOMP] = SRC[1]; \ @@ -204,13 +265,64 @@ get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) DST[ACOMP] = SRC[3] #include "swrast/s_spantemp.h" -/* ARGB */ -#define NAME(PREFIX) PREFIX##_ARGB -#define FORMAT GL_RGBA +/* 32-bit BGRA */ +#define NAME(PREFIX) PREFIX##_BGRA32 +#define RB_TYPE GLfloat #define SPAN_VARS \ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); #define INIT_PIXEL_PTR(P, X, Y) \ - GLchan *P = osmesa->rowaddr[Y] + 4 * (X) + GLfloat *P = (GLfloat *) 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] = 1.0F +#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" + + +/* 8-bit ARGB */ +#define NAME(PREFIX) PREFIX##_ARGB8 +#define RB_TYPE GLubyte +#define SPAN_VARS \ + const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); +#define INIT_PIXEL_PTR(P, X, Y) \ + GLubyte *P = (GLubyte *) 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] = 255 +#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" + +/* 16-bit ARGB */ +#define NAME(PREFIX) PREFIX##_ARGB16 +#define RB_TYPE GLushort +#define SPAN_VARS \ + const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); +#define INIT_PIXEL_PTR(P, X, Y) \ + GLushort *P = (GLushort *) osmesa->rowaddr[Y] + 4 * (X) #define INC_PIXEL_PTR(P) P += 4 #define STORE_PIXEL(DST, X, Y, VALUE) \ DST[1] = VALUE[RCOMP]; \ @@ -221,7 +333,7 @@ get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) DST[1] = VALUE[RCOMP]; \ DST[2] = VALUE[GCOMP]; \ DST[3] = VALUE[BCOMP]; \ - DST[0] = CHAN_MAX + DST[0] = 65535 #define FETCH_PIXEL(DST, SRC) \ DST[RCOMP] = SRC[1]; \ DST[GCOMP] = SRC[2]; \ @@ -229,13 +341,39 @@ get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) DST[ACOMP] = SRC[0] #include "swrast/s_spantemp.h" -/* RGB */ -#define NAME(PREFIX) PREFIX##_RGB -#define FORMAT GL_RGBA +/* 32-bit ARGB */ +#define NAME(PREFIX) PREFIX##_ARGB32 +#define RB_TYPE GLfloat #define SPAN_VARS \ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); #define INIT_PIXEL_PTR(P, X, Y) \ - GLchan *P = osmesa->rowaddr[Y] + 3 * (X) + GLfloat *P = (GLfloat *) 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] = 1.0F +#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" + + +/* 8-bit RGB */ +#define NAME(PREFIX) PREFIX##_RGB8 +#define RB_TYPE GLubyte +#define SPAN_VARS \ + const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); +#define INIT_PIXEL_PTR(P, X, Y) \ + GLubyte *P = (GLubyte *) osmesa->rowaddr[Y] + 3 * (X) #define INC_PIXEL_PTR(P) P += 3 #define STORE_PIXEL(DST, X, Y, VALUE) \ DST[0] = VALUE[RCOMP]; \ @@ -245,16 +383,55 @@ get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) DST[RCOMP] = SRC[0]; \ DST[GCOMP] = SRC[1]; \ DST[BCOMP] = SRC[2]; \ - DST[ACOMP] = CHAN_MAX + DST[ACOMP] = 255 #include "swrast/s_spantemp.h" -/* BGR */ -#define NAME(PREFIX) PREFIX##_BGR -#define FORMAT GL_RGBA +/* 16-bit RGB */ +#define NAME(PREFIX) PREFIX##_RGB16 +#define RB_TYPE GLushort +#define SPAN_VARS \ + const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); +#define INIT_PIXEL_PTR(P, X, Y) \ + GLushort *P = (GLushort *) osmesa->rowaddr[Y] + 3 * (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] = 65535U +#include "swrast/s_spantemp.h" + +/* 32-bit RGB */ +#define NAME(PREFIX) PREFIX##_RGB32 +#define RB_TYPE GLfloat +#define SPAN_VARS \ + const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); +#define INIT_PIXEL_PTR(P, X, Y) \ + GLfloat *P = (GLfloat *) osmesa->rowaddr[Y] + 3 * (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] = 1.0F +#include "swrast/s_spantemp.h" + + +/* 8-bit BGR */ +#define NAME(PREFIX) PREFIX##_BGR8 +#define RB_TYPE GLubyte #define SPAN_VARS \ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); #define INIT_PIXEL_PTR(P, X, Y) \ - GLchan *P = osmesa->rowaddr[Y] + 3 * (X) + GLubyte *P = (GLubyte *) osmesa->rowaddr[Y] + 3 * (X) #define INC_PIXEL_PTR(P) P += 3 #define STORE_PIXEL(DST, X, Y, VALUE) \ DST[2] = VALUE[RCOMP]; \ @@ -264,13 +441,51 @@ get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) DST[RCOMP] = SRC[2]; \ DST[GCOMP] = SRC[1]; \ DST[BCOMP] = SRC[0]; \ - DST[ACOMP] = CHAN_MAX + DST[ACOMP] = 255 #include "swrast/s_spantemp.h" -/* 16-bit RGB */ -#if CHAN_TYPE == GL_UNSIGNED_BYTE +/* 16-bit BGR */ +#define NAME(PREFIX) PREFIX##_BGR16 +#define RB_TYPE GLushort +#define SPAN_VARS \ + const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); +#define INIT_PIXEL_PTR(P, X, Y) \ + GLushort *P = (GLushort *) osmesa->rowaddr[Y] + 3 * (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] = 65535 +#include "swrast/s_spantemp.h" + +/* 32-bit BGR */ +#define NAME(PREFIX) PREFIX##_BGR32 +#define RB_TYPE GLfloat +#define SPAN_VARS \ + const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); +#define INIT_PIXEL_PTR(P, X, Y) \ + GLfloat *P = (GLfloat *) osmesa->rowaddr[Y] + 3 * (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] = 1.0F +#include "swrast/s_spantemp.h" + + +/* 16-bit 5/6/5 RGB */ #define NAME(PREFIX) PREFIX##_RGB_565 -#define FORMAT GL_RGBA +#define RB_TYPE GLubyte #define SPAN_VARS \ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); #define INIT_PIXEL_PTR(P, X, Y) \ @@ -284,11 +499,12 @@ get_buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) 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 CI_MODE +#define RB_TYPE GLubyte #define SPAN_VARS \ const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); #define INIT_PIXEL_PTR(P, X, Y) \ @@ -316,7 +532,7 @@ do { \ (DST)[osmesa->aInd] = A; \ } while (0) -#define PIXELADDR4(X,Y) (osmesa->rowaddr[Y] + 4 * (X)) +#define PIXELADDR4(X,Y) ((GLchan *) osmesa->rowaddr[Y] + 4 * (X)) /** @@ -371,9 +587,9 @@ do { \ -/* +/** * Analyze context state to see if we can provide a fast line drawing - * function, like those in lines.c. Otherwise, return NULL. + * function. Otherwise, return NULL. */ static swrast_line_func osmesa_choose_line_function( GLcontext *ctx ) @@ -481,8 +697,8 @@ osmesa_choose_line_function( GLcontext *ctx ) -/* - * Return pointer to an accelerated triangle function if possible. +/** + * Return pointer to an optimized triangle function if possible. */ static swrast_tri_func osmesa_choose_triangle_function( GLcontext *ctx ) @@ -563,75 +779,170 @@ osmesa_renderbuffer_storage(GLcontext *ctx, struct gl_renderbuffer *rb, GLenum internalFormat, GLuint width, GLuint height) { const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); + GLint bpc; /* bits per channel */ + + if (rb->DataType == GL_UNSIGNED_BYTE) + bpc = 8; + else if (rb->DataType == GL_UNSIGNED_SHORT) + bpc = 16; + else + bpc = 32; /* Note: we can ignoring internalFormat for "window-system" renderbuffers */ (void) internalFormat; 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; - rb->RedBits = - rb->GreenBits = - rb->BlueBits = - rb->AlphaBits = 8 * sizeof(GLchan); + if (rb->DataType == GL_UNSIGNED_BYTE) { + rb->GetRow = get_row_RGBA8; + rb->GetValues = get_values_RGBA8; + rb->PutRow = put_row_RGBA8; + rb->PutRowRGB = put_row_rgb_RGBA8; + rb->PutMonoRow = put_mono_row_RGBA8; + rb->PutValues = put_values_RGBA8; + rb->PutMonoValues = put_mono_values_RGBA8; + } + else if (rb->DataType == GL_UNSIGNED_SHORT) { + rb->GetRow = get_row_RGBA16; + rb->GetValues = get_values_RGBA16; + rb->PutRow = put_row_RGBA16; + rb->PutRowRGB = put_row_rgb_RGBA16; + rb->PutMonoRow = put_mono_row_RGBA16; + rb->PutValues = put_values_RGBA16; + rb->PutMonoValues = put_mono_values_RGBA16; + } + else { + rb->GetRow = get_row_RGBA32; + rb->GetValues = get_values_RGBA32; + rb->PutRow = put_row_RGBA32; + rb->PutRowRGB = put_row_rgb_RGBA32; + rb->PutMonoRow = put_mono_row_RGBA32; + rb->PutValues = put_values_RGBA32; + rb->PutMonoValues = put_mono_values_RGBA32; + } + rb->RedBits = rb->GreenBits = rb->BlueBits = rb->AlphaBits = bpc; } 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; - rb->RedBits = - rb->GreenBits = - rb->BlueBits = - rb->AlphaBits = 8 * sizeof(GLchan); + if (rb->DataType == GL_UNSIGNED_BYTE) { + rb->GetRow = get_row_BGRA8; + rb->GetValues = get_values_BGRA8; + rb->PutRow = put_row_BGRA8; + rb->PutRowRGB = put_row_rgb_BGRA8; + rb->PutMonoRow = put_mono_row_BGRA8; + rb->PutValues = put_values_BGRA8; + rb->PutMonoValues = put_mono_values_BGRA8; + } + else if (rb->DataType == GL_UNSIGNED_SHORT) { + rb->GetRow = get_row_BGRA16; + rb->GetValues = get_values_BGRA16; + rb->PutRow = put_row_BGRA16; + rb->PutRowRGB = put_row_rgb_BGRA16; + rb->PutMonoRow = put_mono_row_BGRA16; + rb->PutValues = put_values_BGRA16; + rb->PutMonoValues = put_mono_values_BGRA16; + } + else { + rb->GetRow = get_row_BGRA32; + rb->GetValues = get_values_BGRA32; + rb->PutRow = put_row_BGRA32; + rb->PutRowRGB = put_row_rgb_BGRA32; + rb->PutMonoRow = put_mono_row_BGRA32; + rb->PutValues = put_values_BGRA32; + rb->PutMonoValues = put_mono_values_BGRA32; + } + rb->RedBits = rb->GreenBits = rb->BlueBits = rb->AlphaBits = bpc; } 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; - rb->RedBits = - rb->GreenBits = - rb->BlueBits = - rb->AlphaBits = 8 * sizeof(GLchan); + if (rb->DataType == GL_UNSIGNED_BYTE) { + rb->GetRow = get_row_ARGB8; + rb->GetValues = get_values_ARGB8; + rb->PutRow = put_row_ARGB8; + rb->PutRowRGB = put_row_rgb_ARGB8; + rb->PutMonoRow = put_mono_row_ARGB8; + rb->PutValues = put_values_ARGB8; + rb->PutMonoValues = put_mono_values_ARGB8; + } + else if (rb->DataType == GL_UNSIGNED_SHORT) { + rb->GetRow = get_row_ARGB16; + rb->GetValues = get_values_ARGB16; + rb->PutRow = put_row_ARGB16; + rb->PutRowRGB = put_row_rgb_ARGB16; + rb->PutMonoRow = put_mono_row_ARGB16; + rb->PutValues = put_values_ARGB16; + rb->PutMonoValues = put_mono_values_ARGB16; + } + else { + rb->GetRow = get_row_ARGB32; + rb->GetValues = get_values_ARGB32; + rb->PutRow = put_row_ARGB32; + rb->PutRowRGB = put_row_rgb_ARGB32; + rb->PutMonoRow = put_mono_row_ARGB32; + rb->PutValues = put_values_ARGB32; + rb->PutMonoValues = put_mono_values_ARGB32; + } + rb->RedBits = rb->GreenBits = rb->BlueBits = rb->AlphaBits = bpc; } 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; - rb->RedBits = - rb->GreenBits = - rb->BlueBits = 8 * sizeof(GLchan); + if (rb->DataType == GL_UNSIGNED_BYTE) { + rb->GetRow = get_row_RGB8; + rb->GetValues = get_values_RGB8; + rb->PutRow = put_row_RGB8; + rb->PutRowRGB = put_row_rgb_RGB8; + rb->PutMonoRow = put_mono_row_RGB8; + rb->PutValues = put_values_RGB8; + rb->PutMonoValues = put_mono_values_RGB8; + } + else if (rb->DataType == GL_UNSIGNED_SHORT) { + rb->GetRow = get_row_RGB16; + rb->GetValues = get_values_RGB16; + rb->PutRow = put_row_RGB16; + rb->PutRowRGB = put_row_rgb_RGB16; + rb->PutMonoRow = put_mono_row_RGB16; + rb->PutValues = put_values_RGB16; + rb->PutMonoValues = put_mono_values_RGB16; + } + else { + rb->GetRow = get_row_RGB32; + rb->GetValues = get_values_RGB32; + rb->PutRow = put_row_RGB32; + rb->PutRowRGB = put_row_rgb_RGB32; + rb->PutMonoRow = put_mono_row_RGB32; + rb->PutValues = put_values_RGB32; + rb->PutMonoValues = put_mono_values_RGB32; + } + rb->RedBits = rb->GreenBits = rb->BlueBits = bpc; } 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; - rb->RedBits = - rb->GreenBits = - rb->BlueBits = 8 * sizeof(GLchan); + if (rb->DataType == GL_UNSIGNED_BYTE) { + rb->GetRow = get_row_BGR8; + rb->GetValues = get_values_BGR8; + rb->PutRow = put_row_BGR8; + rb->PutRowRGB = put_row_rgb_BGR8; + rb->PutMonoRow = put_mono_row_BGR8; + rb->PutValues = put_values_BGR8; + rb->PutMonoValues = put_mono_values_BGR8; + } + else if (rb->DataType == GL_UNSIGNED_SHORT) { + rb->GetRow = get_row_BGR16; + rb->GetValues = get_values_BGR16; + rb->PutRow = put_row_BGR16; + rb->PutRowRGB = put_row_rgb_BGR16; + rb->PutMonoRow = put_mono_row_BGR16; + rb->PutValues = put_values_BGR16; + rb->PutMonoValues = put_mono_values_BGR16; + } + else { + rb->GetRow = get_row_BGR32; + rb->GetValues = get_values_BGR32; + rb->PutRow = put_row_BGR32; + rb->PutRowRGB = put_row_rgb_BGR32; + rb->PutMonoRow = put_mono_row_BGR32; + rb->PutValues = put_values_BGR32; + rb->PutMonoValues = put_mono_values_BGR32; + } + rb->RedBits = rb->GreenBits = rb->BlueBits = bpc; } -#if CHAN_TYPE == GL_UNSIGNED_BYTE else if (osmesa->format == OSMESA_RGB_565) { + ASSERT(rb->DataType == GL_UNSIGNED_BYTE); rb->GetRow = get_row_RGB_565; rb->GetValues = get_values_RGB_565; rb->PutRow = put_row_RGB_565; @@ -643,7 +954,6 @@ osmesa_renderbuffer_storage(GLcontext *ctx, struct gl_renderbuffer *rb, rb->GreenBits = 6; rb->BlueBits = 5; } -#endif else if (osmesa->format == OSMESA_COLOR_INDEX) { rb->GetRow = get_row_CI; rb->GetValues = get_values_CI; @@ -668,25 +978,25 @@ osmesa_renderbuffer_storage(GLcontext *ctx, struct gl_renderbuffer *rb, * Allocate a new renderbuffer to describe the user-provided color buffer. */ static struct gl_renderbuffer * -new_osmesa_renderbuffer(GLenum format) +new_osmesa_renderbuffer(GLcontext *ctx, GLenum format, GLenum type) { - struct gl_renderbuffer *rb = CALLOC_STRUCT(gl_renderbuffer); + const GLuint name = 0; + struct gl_renderbuffer *rb = _mesa_new_renderbuffer(ctx, name); 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->_ActualFormat = GL_COLOR_INDEX8_EXT; + rb->_BaseFormat = GL_COLOR_INDEX; rb->DataType = GL_UNSIGNED_BYTE; } else { - rb->_BaseFormat = GL_RGBA; rb->InternalFormat = GL_RGBA; - rb->DataType = CHAN_TYPE; + rb->_ActualFormat = GL_RGBA; + rb->_BaseFormat = GL_RGBA; + rb->DataType = type; } } return rb; @@ -694,12 +1004,70 @@ new_osmesa_renderbuffer(GLenum format) +/** + * Recompute the values of the context's rowaddr array. + */ +static void +compute_row_addresses( OSMesaContext osmesa ) +{ + GLint bytesPerPixel, bytesPerRow, i; + GLubyte *origin = (GLubyte *) osmesa->rb->Data; + GLint bpc; /* bytes per channel */ + + if (osmesa->rb->DataType == GL_UNSIGNED_BYTE) + bpc = 1; + else if (osmesa->rb->DataType == GL_UNSIGNED_SHORT) + bpc = 2; + else if (osmesa->rb->DataType == GL_FLOAT) + bpc = 4; + else { + _mesa_problem(&osmesa->mesa, + "Unexpected datatype in osmesa::compute_row_addresses"); + return; + } + + if (osmesa->format == OSMESA_COLOR_INDEX) { + /* CI mode */ + bytesPerPixel = 1 * sizeof(GLubyte); + } + else if ((osmesa->format == OSMESA_RGB) || (osmesa->format == OSMESA_BGR)) { + /* RGB mode */ + bytesPerPixel = 3 * bpc; + } + else if (osmesa->format == OSMESA_RGB_565) { + /* 5/6/5 RGB pixel in 16 bits */ + bytesPerPixel = 2; + } + else { + /* RGBA mode */ + bytesPerPixel = 4 * bpc; + } + + bytesPerRow = osmesa->rowlength * bytesPerPixel; + + if (osmesa->yup) { + /* Y=0 is bottom line of window */ + for (i = 0; i < MAX_HEIGHT; i++) { + osmesa->rowaddr[i] = (GLvoid *) ((GLubyte *) origin + i * bytesPerRow); + } + } + else { + /* Y=0 is top line of window */ + for (i = 0; i < MAX_HEIGHT; i++) { + GLint j = osmesa->height - i - 1; + osmesa->rowaddr[i] = (GLvoid *) ((GLubyte *) origin + j * bytesPerRow); + } + } +} + + + /**********************************************************************/ /***** Public Functions *****/ /**********************************************************************/ -/* +/** * Create an Off-Screen Mesa rendering context. The only attribute needed is * an RGBA vs Color-Index mode flag. * @@ -718,7 +1086,7 @@ OSMesaCreateContext( GLenum format, OSMesaContext sharelist ) -/* +/** * New in Mesa 3.5 * * Create context and specify size of ancillary buffers. @@ -732,6 +1100,7 @@ OSMesaCreateContextExt( GLenum format, GLint depthBits, GLint stencilBits, GLint rind, gind, bind, aind; GLint indexBits = 0, redBits = 0, greenBits = 0, blueBits = 0, alphaBits =0; GLboolean rgbmode; + GLenum type = CHAN_TYPE; rind = gind = bind = aind = 0; if (format==OSMESA_COLOR_INDEX) { @@ -832,7 +1201,7 @@ OSMesaCreateContextExt( GLenum format, GLint depthBits, GLint stencilBits, 1 /* num samples */ ); if (!osmesa->gl_visual) { - FREE(osmesa); + _mesa_free(osmesa); return NULL; } @@ -849,7 +1218,7 @@ OSMesaCreateContextExt( GLenum format, GLint depthBits, GLint stencilBits, : (GLcontext *) NULL, &functions, (void *) osmesa)) { _mesa_destroy_visual( osmesa->gl_visual ); - FREE(osmesa); + _mesa_free(osmesa); return NULL; } @@ -862,13 +1231,14 @@ OSMesaCreateContextExt( GLenum format, GLint depthBits, GLint stencilBits, if (!osmesa->gl_buffer) { _mesa_destroy_visual( osmesa->gl_visual ); _mesa_free_context_data( &osmesa->mesa ); - FREE(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)); + osmesa->rb = new_osmesa_renderbuffer(&osmesa->mesa, format, type); + _mesa_add_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT, osmesa->rb); + _mesa_add_soft_renderbuffers(osmesa->gl_buffer, GL_FALSE, /* color */ osmesa->gl_visual->haveDepthBuffer, @@ -878,7 +1248,6 @@ OSMesaCreateContextExt( GLenum format, GLint depthBits, GLint stencilBits, GL_FALSE /* aux */ ); osmesa->format = format; - osmesa->buffer = NULL; osmesa->width = 0; osmesa->height = 0; osmesa->userRowLength = 0; @@ -923,73 +1292,29 @@ OSMesaCreateContextExt( GLenum format, GLint depthBits, GLint stencilBits, } -/* +/** * Destroy an Off-Screen Mesa rendering context. * - * Input: ctx - the context to destroy + * \param osmesa the context to destroy */ GLAPI void GLAPIENTRY -OSMesaDestroyContext( OSMesaContext ctx ) +OSMesaDestroyContext( OSMesaContext osmesa ) { - 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(GLubyte); - } - 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); - } + if (osmesa) { + _swsetup_DestroyContext( &osmesa->mesa ); + _tnl_DestroyContext( &osmesa->mesa ); + _ac_DestroyContext( &osmesa->mesa ); + _swrast_DestroyContext( &osmesa->mesa ); + + _mesa_destroy_visual( osmesa->gl_visual ); + _mesa_destroy_framebuffer( osmesa->gl_buffer ); + _mesa_free_context_data( &osmesa->mesa ); + _mesa_free( osmesa ); } } -/* +/** * 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 @@ -1002,33 +1327,37 @@ compute_row_addresses( OSMesaContext ctx ) * 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 + * Input: osmesa - 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. + * then type may be GL_UNSIGNED_SHORT or GL_UNSIGNED_BYTE. And if + * Mesa's been build with CHAN_BITS==32 then type may be GL_FLOAT, + * GL_UNSIGNED_SHORT or GL_UNSIGNED_BYTE. * width, height - size of image buffer in pixels, at least 1 - * Return: GL_TRUE if success, GL_FALSE if error because of invalid ctx, + * Return: GL_TRUE if success, GL_FALSE if error because of invalid osmesa, * 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, +OSMesaMakeCurrent( OSMesaContext osmesa, void *buffer, GLenum type, GLsizei width, GLsizei height ) { - if (!ctx || !buffer || + if (!osmesa || !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; + if (osmesa->format == OSMESA_RGB_565 && type != GL_UNSIGNED_SHORT_5_6_5) { + return GL_FALSE; } - else if (type != CHAN_TYPE) { + + if (!(type == GL_UNSIGNED_BYTE || + (type == GL_UNSIGNED_SHORT && CHAN_BITS >= 16) || + (type == GL_FLOAT && CHAN_BITS == 32))) { + /* i.e. is sizeof(type) * 8 > CHAN_BITS? */ return GL_FALSE; } @@ -1037,28 +1366,48 @@ OSMesaMakeCurrent( OSMesaContext ctx, void *buffer, GLenum type, * 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->width = width; + osmesa->height = height; - osmesa_update_state( &ctx->mesa, 0 ); + osmesa_update_state( &osmesa->mesa, 0 ); /* Call this periodically to detect when the user has begun using * GL rendering from multiple threads. */ _glapi_check_multithread(); - _mesa_make_current( &ctx->mesa, ctx->gl_buffer, ctx->gl_buffer ); + _mesa_make_current( &osmesa->mesa, osmesa->gl_buffer, osmesa->gl_buffer ); - if (ctx->userRowLength) - ctx->rowlength = ctx->userRowLength; + if (osmesa->userRowLength) + osmesa->rowlength = osmesa->userRowLength; else - ctx->rowlength = width; + osmesa->rowlength = width; - compute_row_addresses( ctx ); + osmesa->rb->Data = buffer; + osmesa->rb->DataType = type; + compute_row_addresses( osmesa ); + + /* update the color renderbuffer's format, type, width, height */ + osmesa_renderbuffer_storage(&osmesa->mesa, osmesa->rb, + osmesa->rb->InternalFormat, width, height); + + /* Clear renderbuffer attachment, then re-add. This installs the + * renderbuffer adaptor/wrapper if needed. + */ + { + struct gl_renderbuffer *rb + = osmesa->gl_buffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer; + if (rb && rb->Wrapped != rb) + _mesa_free(rb); + osmesa->gl_buffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer = NULL; + } + _mesa_add_renderbuffer(osmesa->gl_buffer, BUFFER_FRONT_LEFT, osmesa->rb); - /* this will make ensure we recognize the new buffer size */ - _mesa_resize_framebuffer(&ctx->mesa, ctx->gl_buffer, width, height); + /* this updates the visual's red/green/blue/alphaBits fields */ + _mesa_update_framebuffer_visual(osmesa->gl_buffer); + + /* update the framebuffer size */ + _mesa_resize_framebuffer(&osmesa->mesa, osmesa->gl_buffer, width, height); return GL_TRUE; } @@ -1120,7 +1469,13 @@ OSMesaGetIntegerv( GLint pname, GLint *value ) *value = osmesa->format; return; case OSMESA_TYPE: - *value = CHAN_TYPE; + /* current color buffer's data type */ + if (osmesa->rb) { + *value = osmesa->rb->DataType; + } + else { + *value = 0; + } return; case OSMESA_ROW_LENGTH: *value = osmesa->userRowLength; @@ -1140,7 +1495,8 @@ OSMesaGetIntegerv( GLint pname, GLint *value ) } } -/* + +/** * Return the depth buffer associated with an OSMesa context. * Input: c - the OSMesa context * Output: width, height - size of buffer in pixels @@ -1176,7 +1532,8 @@ OSMesaGetDepthBuffer( OSMesaContext c, GLint *width, GLint *height, } } -/* + +/** * Return the color buffer associated with an OSMesa context. * Input: c - the OSMesa context * Output: width, height - size of buffer in pixels @@ -1185,23 +1542,23 @@ OSMesaGetDepthBuffer( OSMesaContext c, GLint *width, GLint *height, * Return: GL_TRUE or GL_FALSE to indicate success or failure. */ GLAPI GLboolean GLAPIENTRY -OSMesaGetColorBuffer( OSMesaContext c, GLint *width, +OSMesaGetColorBuffer( OSMesaContext osmesa, GLint *width, GLint *height, GLint *format, void **buffer ) { - if (!c->buffer) { + if (osmesa->rb && osmesa->rb->Data) { + *width = osmesa->rb->Width; + *height = osmesa->rb->Height; + *format = osmesa->format; + *buffer = osmesa->rb->Data; + return GL_TRUE; + } + else { *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; - } } |