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Implementation of GL_EXT_pixel_buffer_object extension.

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Note: extension may not be finalized yet - subject to change!
Note: implementation not fully suitable for h/w implementation yet.
This commit is contained in:
Brian Paul
2004-03-13 18:21:40 +00:00
parent 5498e8b9f3
commit 7a6b71ef29
22 changed files with 486 additions and 164 deletions
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30
src/mesa/main/pixel.c
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@@ -24,6 +24,7 @@
#include "glheader.h"
#include "imports.h"
#include "image.h"
#include "colormac.h"
#include "context.h"
#include "macros.h"
@@ -1682,7 +1683,8 @@ void _mesa_update_pixel( GLcontext *ctx, GLuint new_state )
/***** Initialization *****/
/**********************************************************************/
void _mesa_init_pixel( GLcontext * ctx )
void
_mesa_init_pixel( GLcontext * ctx )
{
int i;
@@ -1774,6 +1776,9 @@ void _mesa_init_pixel( GLcontext * ctx )
ctx->Pack.LsbFirst = GL_FALSE;
ctx->Pack.ClientStorage = GL_FALSE;
ctx->Pack.Invert = GL_FALSE;
#if FEATURE_EXT_pixel_buffer_object
ctx->Pack.BufferObj = ctx->Array.NullBufferObj;
#endif
ctx->Unpack.Alignment = 4;
ctx->Unpack.RowLength = 0;
ctx->Unpack.ImageHeight = 0;
@@ -1784,6 +1789,29 @@ void _mesa_init_pixel( GLcontext * ctx )
ctx->Unpack.LsbFirst = GL_FALSE;
ctx->Unpack.ClientStorage = GL_FALSE;
ctx->Unpack.Invert = GL_FALSE;
#if FEATURE_EXT_pixel_buffer_object
ctx->Unpack.BufferObj = ctx->Array.NullBufferObj;
#endif
/*
* _mesa_unpack_image() returns image data in this format. When we
* execute image commands (glDrawPixels(), glTexImage(), etc) from
* within display lists we have to be sure to set the current
* unpacking parameters to these values!
*/
ctx->DefaultPacking.Alignment = 1;
ctx->DefaultPacking.RowLength = 0;
ctx->DefaultPacking.SkipPixels = 0;
ctx->DefaultPacking.SkipRows = 0;
ctx->DefaultPacking.ImageHeight = 0;
ctx->DefaultPacking.SkipImages = 0;
ctx->DefaultPacking.SwapBytes = GL_FALSE;
ctx->DefaultPacking.LsbFirst = GL_FALSE;
ctx->DefaultPacking.ClientStorage = GL_FALSE;
ctx->DefaultPacking.Invert = GL_FALSE;
#if FEATURE_EXT_pixel_buffer_object
ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj;
#endif
if (ctx->Visual.doubleBufferMode) {
ctx->Pixel.ReadBuffer = GL_BACK;