diff options
Diffstat (limited to 'mesalib/src/mesa/main/pixel.c')
| -rw-r--r-- | mesalib/src/mesa/main/pixel.c | 1462 |
1 files changed, 731 insertions, 731 deletions
diff --git a/mesalib/src/mesa/main/pixel.c b/mesalib/src/mesa/main/pixel.c index 26fb71508..775746270 100644 --- a/mesalib/src/mesa/main/pixel.c +++ b/mesalib/src/mesa/main/pixel.c @@ -1,731 +1,731 @@ -/*
- * Mesa 3-D graphics library
- * Version: 7.1
- *
- * Copyright (C) 1999-2008 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.
- */
-
-
-/**
- * \file pixel.c
- * Pixel transfer functions (glPixelZoom, glPixelMap, glPixelTransfer)
- */
-
-#include "glheader.h"
-#include "bufferobj.h"
-#include "colormac.h"
-#include "context.h"
-#include "macros.h"
-#include "mfeatures.h"
-#include "pixel.h"
-#include "pbo.h"
-#include "mtypes.h"
-#include "main/dispatch.h"
-
-
-#if FEATURE_pixel_transfer
-
-
-/**********************************************************************/
-/***** glPixelZoom *****/
-/**********************************************************************/
-
-static void GLAPIENTRY
-_mesa_PixelZoom( GLfloat xfactor, GLfloat yfactor )
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if (ctx->Pixel.ZoomX == xfactor &&
- ctx->Pixel.ZoomY == yfactor)
- return;
-
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.ZoomX = xfactor;
- ctx->Pixel.ZoomY = yfactor;
-}
-
-
-
-/**********************************************************************/
-/***** glPixelMap *****/
-/**********************************************************************/
-
-/**
- * Return pointer to a pixelmap by name.
- */
-static struct gl_pixelmap *
-get_pixelmap(struct gl_context *ctx, GLenum map)
-{
- switch (map) {
- case GL_PIXEL_MAP_I_TO_I:
- return &ctx->PixelMaps.ItoI;
- case GL_PIXEL_MAP_S_TO_S:
- return &ctx->PixelMaps.StoS;
- case GL_PIXEL_MAP_I_TO_R:
- return &ctx->PixelMaps.ItoR;
- case GL_PIXEL_MAP_I_TO_G:
- return &ctx->PixelMaps.ItoG;
- case GL_PIXEL_MAP_I_TO_B:
- return &ctx->PixelMaps.ItoB;
- case GL_PIXEL_MAP_I_TO_A:
- return &ctx->PixelMaps.ItoA;
- case GL_PIXEL_MAP_R_TO_R:
- return &ctx->PixelMaps.RtoR;
- case GL_PIXEL_MAP_G_TO_G:
- return &ctx->PixelMaps.GtoG;
- case GL_PIXEL_MAP_B_TO_B:
- return &ctx->PixelMaps.BtoB;
- case GL_PIXEL_MAP_A_TO_A:
- return &ctx->PixelMaps.AtoA;
- default:
- return NULL;
- }
-}
-
-
-/**
- * Helper routine used by the other _mesa_PixelMap() functions.
- */
-static void
-store_pixelmap(struct gl_context *ctx, GLenum map, GLsizei mapsize,
- const GLfloat *values)
-{
- GLint i;
- struct gl_pixelmap *pm = get_pixelmap(ctx, map);
- if (!pm) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glPixelMap(map)");
- return;
- }
-
- switch (map) {
- case GL_PIXEL_MAP_S_TO_S:
- /* special case */
- ctx->PixelMaps.StoS.Size = mapsize;
- for (i = 0; i < mapsize; i++) {
- ctx->PixelMaps.StoS.Map[i] = (GLfloat)IROUND(values[i]);
- }
- break;
- case GL_PIXEL_MAP_I_TO_I:
- /* special case */
- ctx->PixelMaps.ItoI.Size = mapsize;
- for (i = 0; i < mapsize; i++) {
- ctx->PixelMaps.ItoI.Map[i] = values[i];
- }
- break;
- default:
- /* general case */
- pm->Size = mapsize;
- for (i = 0; i < mapsize; i++) {
- GLfloat val = CLAMP(values[i], 0.0F, 1.0F);
- pm->Map[i] = val;
- pm->Map8[i] = (GLint) (val * 255.0F);
- }
- }
-}
-
-
-/**
- * Convenience wrapper for _mesa_validate_pbo_access() for gl[Get]PixelMap().
- */
-static GLboolean
-validate_pbo_access(struct gl_context *ctx,
- struct gl_pixelstore_attrib *pack, GLsizei mapsize,
- GLenum format, GLenum type, GLsizei clientMemSize,
- const GLvoid *ptr)
-{
- GLboolean ok;
-
- /* Note, need to use DefaultPacking and Unpack's buffer object */
- _mesa_reference_buffer_object(ctx,
- &ctx->DefaultPacking.BufferObj,
- pack->BufferObj);
-
- ok = _mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1,
- format, type, clientMemSize, ptr);
-
- /* restore */
- _mesa_reference_buffer_object(ctx,
- &ctx->DefaultPacking.BufferObj,
- ctx->Shared->NullBufferObj);
-
- if (!ok) {
- if (_mesa_is_bufferobj(pack->BufferObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "gl[Get]PixelMap*v(out of bounds PBO access)");
- } else {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetnPixelMap*vARB(out of bounds access:"
- " bufSize (%d) is too small)", clientMemSize);
- }
- }
- return ok;
-}
-
-
-static void GLAPIENTRY
-_mesa_PixelMapfv( GLenum map, GLsizei mapsize, const GLfloat *values )
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- /* XXX someday, test against ctx->Const.MaxPixelMapTableSize */
- if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );
- return;
- }
-
- if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) {
- /* test that mapsize is a power of two */
- if (!_mesa_is_pow_two(mapsize)) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" );
- return;
- }
- }
-
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
-
- if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize, GL_INTENSITY,
- GL_FLOAT, INT_MAX, values)) {
- return;
- }
-
- values = (const GLfloat *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values);
- if (!values) {
- if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glPixelMapfv(PBO is mapped)");
- }
- return;
- }
-
- store_pixelmap(ctx, map, mapsize, values);
-
- _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
-}
-
-
-static void GLAPIENTRY
-_mesa_PixelMapuiv(GLenum map, GLsizei mapsize, const GLuint *values )
-{
- GLfloat fvalues[MAX_PIXEL_MAP_TABLE];
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" );
- return;
- }
-
- if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) {
- /* test that mapsize is a power of two */
- if (!_mesa_is_pow_two(mapsize)) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" );
- return;
- }
- }
-
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
-
- if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize, GL_INTENSITY,
- GL_UNSIGNED_INT, INT_MAX, values)) {
- return;
- }
-
- values = (const GLuint *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values);
- if (!values) {
- if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glPixelMapuiv(PBO is mapped)");
- }
- return;
- }
-
- /* convert to floats */
- if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) {
- GLint i;
- for (i = 0; i < mapsize; i++) {
- fvalues[i] = (GLfloat) values[i];
- }
- }
- else {
- GLint i;
- for (i = 0; i < mapsize; i++) {
- fvalues[i] = UINT_TO_FLOAT( values[i] );
- }
- }
-
- _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
-
- store_pixelmap(ctx, map, mapsize, fvalues);
-}
-
-
-static void GLAPIENTRY
-_mesa_PixelMapusv(GLenum map, GLsizei mapsize, const GLushort *values )
-{
- GLfloat fvalues[MAX_PIXEL_MAP_TABLE];
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapusv(mapsize)" );
- return;
- }
-
- if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) {
- /* test that mapsize is a power of two */
- if (!_mesa_is_pow_two(mapsize)) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" );
- return;
- }
- }
-
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
-
- if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize, GL_INTENSITY,
- GL_UNSIGNED_SHORT, INT_MAX, values)) {
- return;
- }
-
- values = (const GLushort *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values);
- if (!values) {
- if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glPixelMapusv(PBO is mapped)");
- }
- return;
- }
-
- /* convert to floats */
- if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) {
- GLint i;
- for (i = 0; i < mapsize; i++) {
- fvalues[i] = (GLfloat) values[i];
- }
- }
- else {
- GLint i;
- for (i = 0; i < mapsize; i++) {
- fvalues[i] = USHORT_TO_FLOAT( values[i] );
- }
- }
-
- _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
-
- store_pixelmap(ctx, map, mapsize, fvalues);
-}
-
-
-static void GLAPIENTRY
-_mesa_GetnPixelMapfvARB( GLenum map, GLsizei bufSize, GLfloat *values )
-{
- GET_CURRENT_CONTEXT(ctx);
- GLint mapsize, i;
- const struct gl_pixelmap *pm;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- pm = get_pixelmap(ctx, map);
- if (!pm) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapfv(map)");
- return;
- }
-
- mapsize = pm->Size;
-
- if (!validate_pbo_access(ctx, &ctx->Pack, mapsize, GL_INTENSITY,
- GL_FLOAT, bufSize, values)) {
- return;
- }
-
- values = (GLfloat *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values);
- if (!values) {
- if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetPixelMapfv(PBO is mapped)");
- }
- return;
- }
-
- if (map == GL_PIXEL_MAP_S_TO_S) {
- /* special case */
- for (i = 0; i < mapsize; i++) {
- values[i] = (GLfloat) ctx->PixelMaps.StoS.Map[i];
- }
- }
- else {
- memcpy(values, pm->Map, mapsize * sizeof(GLfloat));
- }
-
- _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
-}
-
-
-static void GLAPIENTRY
-_mesa_GetPixelMapfv( GLenum map, GLfloat *values )
-{
- _mesa_GetnPixelMapfvARB(map, INT_MAX, values);
-}
-
-static void GLAPIENTRY
-_mesa_GetnPixelMapuivARB( GLenum map, GLsizei bufSize, GLuint *values )
-{
- GET_CURRENT_CONTEXT(ctx);
- GLint mapsize, i;
- const struct gl_pixelmap *pm;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- pm = get_pixelmap(ctx, map);
- if (!pm) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapuiv(map)");
- return;
- }
-
- mapsize = pm->Size;
-
- if (!validate_pbo_access(ctx, &ctx->Pack, mapsize, GL_INTENSITY,
- GL_UNSIGNED_INT, bufSize, values)) {
- return;
- }
-
- values = (GLuint *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values);
- if (!values) {
- if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetPixelMapuiv(PBO is mapped)");
- }
- return;
- }
-
- if (map == GL_PIXEL_MAP_S_TO_S) {
- /* special case */
- memcpy(values, ctx->PixelMaps.StoS.Map, mapsize * sizeof(GLint));
- }
- else {
- for (i = 0; i < mapsize; i++) {
- values[i] = FLOAT_TO_UINT( pm->Map[i] );
- }
- }
-
- _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
-}
-
-
-static void GLAPIENTRY
-_mesa_GetPixelMapuiv( GLenum map, GLuint *values )
-{
- _mesa_GetnPixelMapuivARB(map, INT_MAX, values);
-}
-
-static void GLAPIENTRY
-_mesa_GetnPixelMapusvARB( GLenum map, GLsizei bufSize, GLushort *values )
-{
- GET_CURRENT_CONTEXT(ctx);
- GLint mapsize, i;
- const struct gl_pixelmap *pm;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- pm = get_pixelmap(ctx, map);
- if (!pm) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapusv(map)");
- return;
- }
-
- mapsize = pm->Size;
-
- if (!validate_pbo_access(ctx, &ctx->Pack, mapsize, GL_INTENSITY,
- GL_UNSIGNED_SHORT, bufSize, values)) {
- return;
- }
-
- values = (GLushort *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values);
- if (!values) {
- if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetPixelMapusv(PBO is mapped)");
- }
- return;
- }
-
- switch (map) {
- /* special cases */
- case GL_PIXEL_MAP_I_TO_I:
- for (i = 0; i < mapsize; i++) {
- values[i] = (GLushort) CLAMP(ctx->PixelMaps.ItoI.Map[i], 0.0, 65535.);
- }
- break;
- case GL_PIXEL_MAP_S_TO_S:
- for (i = 0; i < mapsize; i++) {
- values[i] = (GLushort) CLAMP(ctx->PixelMaps.StoS.Map[i], 0.0, 65535.);
- }
- break;
- default:
- for (i = 0; i < mapsize; i++) {
- CLAMPED_FLOAT_TO_USHORT(values[i], pm->Map[i] );
- }
- }
-
- _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
-}
-
-
-static void GLAPIENTRY
-_mesa_GetPixelMapusv( GLenum map, GLushort *values )
-{
- _mesa_GetnPixelMapusvARB(map, INT_MAX, values);
-}
-
-
-/**********************************************************************/
-/***** glPixelTransfer *****/
-/**********************************************************************/
-
-
-/*
- * Implements glPixelTransfer[fi] whether called immediately or from a
- * display list.
- */
-static void GLAPIENTRY
-_mesa_PixelTransferf( GLenum pname, GLfloat param )
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- switch (pname) {
- case GL_MAP_COLOR:
- if (ctx->Pixel.MapColorFlag == (param ? GL_TRUE : GL_FALSE))
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.MapColorFlag = param ? GL_TRUE : GL_FALSE;
- break;
- case GL_MAP_STENCIL:
- if (ctx->Pixel.MapStencilFlag == (param ? GL_TRUE : GL_FALSE))
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.MapStencilFlag = param ? GL_TRUE : GL_FALSE;
- break;
- case GL_INDEX_SHIFT:
- if (ctx->Pixel.IndexShift == (GLint) param)
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.IndexShift = (GLint) param;
- break;
- case GL_INDEX_OFFSET:
- if (ctx->Pixel.IndexOffset == (GLint) param)
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.IndexOffset = (GLint) param;
- break;
- case GL_RED_SCALE:
- if (ctx->Pixel.RedScale == param)
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.RedScale = param;
- break;
- case GL_RED_BIAS:
- if (ctx->Pixel.RedBias == param)
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.RedBias = param;
- break;
- case GL_GREEN_SCALE:
- if (ctx->Pixel.GreenScale == param)
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.GreenScale = param;
- break;
- case GL_GREEN_BIAS:
- if (ctx->Pixel.GreenBias == param)
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.GreenBias = param;
- break;
- case GL_BLUE_SCALE:
- if (ctx->Pixel.BlueScale == param)
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.BlueScale = param;
- break;
- case GL_BLUE_BIAS:
- if (ctx->Pixel.BlueBias == param)
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.BlueBias = param;
- break;
- case GL_ALPHA_SCALE:
- if (ctx->Pixel.AlphaScale == param)
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.AlphaScale = param;
- break;
- case GL_ALPHA_BIAS:
- if (ctx->Pixel.AlphaBias == param)
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.AlphaBias = param;
- break;
- case GL_DEPTH_SCALE:
- if (ctx->Pixel.DepthScale == param)
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.DepthScale = param;
- break;
- case GL_DEPTH_BIAS:
- if (ctx->Pixel.DepthBias == param)
- return;
- FLUSH_VERTICES(ctx, _NEW_PIXEL);
- ctx->Pixel.DepthBias = param;
- break;
- default:
- _mesa_error( ctx, GL_INVALID_ENUM, "glPixelTransfer(pname)" );
- return;
- }
-}
-
-
-static void GLAPIENTRY
-_mesa_PixelTransferi( GLenum pname, GLint param )
-{
- _mesa_PixelTransferf( pname, (GLfloat) param );
-}
-
-
-
-/**********************************************************************/
-/***** State Management *****/
-/**********************************************************************/
-
-/*
- * Return a bitmask of IMAGE_*_BIT flags which to indicate which
- * pixel transfer operations are enabled.
- */
-static void
-update_image_transfer_state(struct gl_context *ctx)
-{
- GLuint mask = 0;
-
- if (ctx->Pixel.RedScale != 1.0F || ctx->Pixel.RedBias != 0.0F ||
- ctx->Pixel.GreenScale != 1.0F || ctx->Pixel.GreenBias != 0.0F ||
- ctx->Pixel.BlueScale != 1.0F || ctx->Pixel.BlueBias != 0.0F ||
- ctx->Pixel.AlphaScale != 1.0F || ctx->Pixel.AlphaBias != 0.0F)
- mask |= IMAGE_SCALE_BIAS_BIT;
-
- if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset)
- mask |= IMAGE_SHIFT_OFFSET_BIT;
-
- if (ctx->Pixel.MapColorFlag)
- mask |= IMAGE_MAP_COLOR_BIT;
-
- ctx->_ImageTransferState = mask;
-}
-
-
-/**
- * Update mesa pixel transfer derived state.
- */
-void _mesa_update_pixel( struct gl_context *ctx, GLuint new_state )
-{
- if (new_state & _NEW_PIXEL)
- update_image_transfer_state(ctx);
-}
-
-
-void
-_mesa_init_pixel_dispatch(struct _glapi_table *disp)
-{
- SET_GetPixelMapfv(disp, _mesa_GetPixelMapfv);
- SET_GetPixelMapuiv(disp, _mesa_GetPixelMapuiv);
- SET_GetPixelMapusv(disp, _mesa_GetPixelMapusv);
- SET_PixelMapfv(disp, _mesa_PixelMapfv);
- SET_PixelMapuiv(disp, _mesa_PixelMapuiv);
- SET_PixelMapusv(disp, _mesa_PixelMapusv);
- SET_PixelTransferf(disp, _mesa_PixelTransferf);
- SET_PixelTransferi(disp, _mesa_PixelTransferi);
- SET_PixelZoom(disp, _mesa_PixelZoom);
-
- /* GL_ARB_robustness */
- SET_GetnPixelMapfvARB(disp, _mesa_GetnPixelMapfvARB);
- SET_GetnPixelMapuivARB(disp, _mesa_GetnPixelMapuivARB);
- SET_GetnPixelMapusvARB(disp, _mesa_GetnPixelMapusvARB);
-}
-
-
-#endif /* FEATURE_pixel_transfer */
-
-
-/**********************************************************************/
-/***** Initialization *****/
-/**********************************************************************/
-
-static void
-init_pixelmap(struct gl_pixelmap *map)
-{
- map->Size = 1;
- map->Map[0] = 0.0;
- map->Map8[0] = 0;
-}
-
-
-/**
- * Initialize the context's PIXEL attribute group.
- */
-void
-_mesa_init_pixel( struct gl_context *ctx )
-{
- /* Pixel group */
- ctx->Pixel.RedBias = 0.0;
- ctx->Pixel.RedScale = 1.0;
- ctx->Pixel.GreenBias = 0.0;
- ctx->Pixel.GreenScale = 1.0;
- ctx->Pixel.BlueBias = 0.0;
- ctx->Pixel.BlueScale = 1.0;
- ctx->Pixel.AlphaBias = 0.0;
- ctx->Pixel.AlphaScale = 1.0;
- ctx->Pixel.DepthBias = 0.0;
- ctx->Pixel.DepthScale = 1.0;
- ctx->Pixel.IndexOffset = 0;
- ctx->Pixel.IndexShift = 0;
- ctx->Pixel.ZoomX = 1.0;
- ctx->Pixel.ZoomY = 1.0;
- ctx->Pixel.MapColorFlag = GL_FALSE;
- ctx->Pixel.MapStencilFlag = GL_FALSE;
- init_pixelmap(&ctx->PixelMaps.StoS);
- init_pixelmap(&ctx->PixelMaps.ItoI);
- init_pixelmap(&ctx->PixelMaps.ItoR);
- init_pixelmap(&ctx->PixelMaps.ItoG);
- init_pixelmap(&ctx->PixelMaps.ItoB);
- init_pixelmap(&ctx->PixelMaps.ItoA);
- init_pixelmap(&ctx->PixelMaps.RtoR);
- init_pixelmap(&ctx->PixelMaps.GtoG);
- init_pixelmap(&ctx->PixelMaps.BtoB);
- init_pixelmap(&ctx->PixelMaps.AtoA);
-
- if (ctx->Visual.doubleBufferMode) {
- ctx->Pixel.ReadBuffer = GL_BACK;
- }
- else {
- ctx->Pixel.ReadBuffer = GL_FRONT;
- }
-
- /* Miscellaneous */
- ctx->_ImageTransferState = 0;
-}
+/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2008 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. + */ + + +/** + * \file pixel.c + * Pixel transfer functions (glPixelZoom, glPixelMap, glPixelTransfer) + */ + +#include "glheader.h" +#include "bufferobj.h" +#include "colormac.h" +#include "context.h" +#include "macros.h" +#include "mfeatures.h" +#include "pixel.h" +#include "pbo.h" +#include "mtypes.h" +#include "main/dispatch.h" + + +#if FEATURE_pixel_transfer + + +/**********************************************************************/ +/***** glPixelZoom *****/ +/**********************************************************************/ + +static void GLAPIENTRY +_mesa_PixelZoom( GLfloat xfactor, GLfloat yfactor ) +{ + GET_CURRENT_CONTEXT(ctx); + + if (ctx->Pixel.ZoomX == xfactor && + ctx->Pixel.ZoomY == yfactor) + return; + + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.ZoomX = xfactor; + ctx->Pixel.ZoomY = yfactor; +} + + + +/**********************************************************************/ +/***** glPixelMap *****/ +/**********************************************************************/ + +/** + * Return pointer to a pixelmap by name. + */ +static struct gl_pixelmap * +get_pixelmap(struct gl_context *ctx, GLenum map) +{ + switch (map) { + case GL_PIXEL_MAP_I_TO_I: + return &ctx->PixelMaps.ItoI; + case GL_PIXEL_MAP_S_TO_S: + return &ctx->PixelMaps.StoS; + case GL_PIXEL_MAP_I_TO_R: + return &ctx->PixelMaps.ItoR; + case GL_PIXEL_MAP_I_TO_G: + return &ctx->PixelMaps.ItoG; + case GL_PIXEL_MAP_I_TO_B: + return &ctx->PixelMaps.ItoB; + case GL_PIXEL_MAP_I_TO_A: + return &ctx->PixelMaps.ItoA; + case GL_PIXEL_MAP_R_TO_R: + return &ctx->PixelMaps.RtoR; + case GL_PIXEL_MAP_G_TO_G: + return &ctx->PixelMaps.GtoG; + case GL_PIXEL_MAP_B_TO_B: + return &ctx->PixelMaps.BtoB; + case GL_PIXEL_MAP_A_TO_A: + return &ctx->PixelMaps.AtoA; + default: + return NULL; + } +} + + +/** + * Helper routine used by the other _mesa_PixelMap() functions. + */ +static void +store_pixelmap(struct gl_context *ctx, GLenum map, GLsizei mapsize, + const GLfloat *values) +{ + GLint i; + struct gl_pixelmap *pm = get_pixelmap(ctx, map); + if (!pm) { + _mesa_error(ctx, GL_INVALID_ENUM, "glPixelMap(map)"); + return; + } + + switch (map) { + case GL_PIXEL_MAP_S_TO_S: + /* special case */ + ctx->PixelMaps.StoS.Size = mapsize; + for (i = 0; i < mapsize; i++) { + ctx->PixelMaps.StoS.Map[i] = (GLfloat)IROUND(values[i]); + } + break; + case GL_PIXEL_MAP_I_TO_I: + /* special case */ + ctx->PixelMaps.ItoI.Size = mapsize; + for (i = 0; i < mapsize; i++) { + ctx->PixelMaps.ItoI.Map[i] = values[i]; + } + break; + default: + /* general case */ + pm->Size = mapsize; + for (i = 0; i < mapsize; i++) { + GLfloat val = CLAMP(values[i], 0.0F, 1.0F); + pm->Map[i] = val; + pm->Map8[i] = (GLint) (val * 255.0F); + } + } +} + + +/** + * Convenience wrapper for _mesa_validate_pbo_access() for gl[Get]PixelMap(). + */ +static GLboolean +validate_pbo_access(struct gl_context *ctx, + struct gl_pixelstore_attrib *pack, GLsizei mapsize, + GLenum format, GLenum type, GLsizei clientMemSize, + const GLvoid *ptr) +{ + GLboolean ok; + + /* Note, need to use DefaultPacking and Unpack's buffer object */ + _mesa_reference_buffer_object(ctx, + &ctx->DefaultPacking.BufferObj, + pack->BufferObj); + + ok = _mesa_validate_pbo_access(1, &ctx->DefaultPacking, mapsize, 1, 1, + format, type, clientMemSize, ptr); + + /* restore */ + _mesa_reference_buffer_object(ctx, + &ctx->DefaultPacking.BufferObj, + ctx->Shared->NullBufferObj); + + if (!ok) { + if (_mesa_is_bufferobj(pack->BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "gl[Get]PixelMap*v(out of bounds PBO access)"); + } else { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetnPixelMap*vARB(out of bounds access:" + " bufSize (%d) is too small)", clientMemSize); + } + } + return ok; +} + + +static void GLAPIENTRY +_mesa_PixelMapfv( GLenum map, GLsizei mapsize, const GLfloat *values ) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + /* XXX someday, test against ctx->Const.MaxPixelMapTableSize */ + if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) { + _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" ); + return; + } + + if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) { + /* test that mapsize is a power of two */ + if (!_mesa_is_pow_two(mapsize)) { + _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapfv(mapsize)" ); + return; + } + } + + FLUSH_VERTICES(ctx, _NEW_PIXEL); + + if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize, GL_INTENSITY, + GL_FLOAT, INT_MAX, values)) { + return; + } + + values = (const GLfloat *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values); + if (!values) { + if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glPixelMapfv(PBO is mapped)"); + } + return; + } + + store_pixelmap(ctx, map, mapsize, values); + + _mesa_unmap_pbo_source(ctx, &ctx->Unpack); +} + + +static void GLAPIENTRY +_mesa_PixelMapuiv(GLenum map, GLsizei mapsize, const GLuint *values ) +{ + GLfloat fvalues[MAX_PIXEL_MAP_TABLE]; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) { + _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" ); + return; + } + + if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) { + /* test that mapsize is a power of two */ + if (!_mesa_is_pow_two(mapsize)) { + _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" ); + return; + } + } + + FLUSH_VERTICES(ctx, _NEW_PIXEL); + + if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize, GL_INTENSITY, + GL_UNSIGNED_INT, INT_MAX, values)) { + return; + } + + values = (const GLuint *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values); + if (!values) { + if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glPixelMapuiv(PBO is mapped)"); + } + return; + } + + /* convert to floats */ + if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) { + GLint i; + for (i = 0; i < mapsize; i++) { + fvalues[i] = (GLfloat) values[i]; + } + } + else { + GLint i; + for (i = 0; i < mapsize; i++) { + fvalues[i] = UINT_TO_FLOAT( values[i] ); + } + } + + _mesa_unmap_pbo_source(ctx, &ctx->Unpack); + + store_pixelmap(ctx, map, mapsize, fvalues); +} + + +static void GLAPIENTRY +_mesa_PixelMapusv(GLenum map, GLsizei mapsize, const GLushort *values ) +{ + GLfloat fvalues[MAX_PIXEL_MAP_TABLE]; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (mapsize < 1 || mapsize > MAX_PIXEL_MAP_TABLE) { + _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapusv(mapsize)" ); + return; + } + + if (map >= GL_PIXEL_MAP_S_TO_S && map <= GL_PIXEL_MAP_I_TO_A) { + /* test that mapsize is a power of two */ + if (!_mesa_is_pow_two(mapsize)) { + _mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" ); + return; + } + } + + FLUSH_VERTICES(ctx, _NEW_PIXEL); + + if (!validate_pbo_access(ctx, &ctx->Unpack, mapsize, GL_INTENSITY, + GL_UNSIGNED_SHORT, INT_MAX, values)) { + return; + } + + values = (const GLushort *) _mesa_map_pbo_source(ctx, &ctx->Unpack, values); + if (!values) { + if (_mesa_is_bufferobj(ctx->Unpack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glPixelMapusv(PBO is mapped)"); + } + return; + } + + /* convert to floats */ + if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) { + GLint i; + for (i = 0; i < mapsize; i++) { + fvalues[i] = (GLfloat) values[i]; + } + } + else { + GLint i; + for (i = 0; i < mapsize; i++) { + fvalues[i] = USHORT_TO_FLOAT( values[i] ); + } + } + + _mesa_unmap_pbo_source(ctx, &ctx->Unpack); + + store_pixelmap(ctx, map, mapsize, fvalues); +} + + +static void GLAPIENTRY +_mesa_GetnPixelMapfvARB( GLenum map, GLsizei bufSize, GLfloat *values ) +{ + GET_CURRENT_CONTEXT(ctx); + GLint mapsize, i; + const struct gl_pixelmap *pm; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + pm = get_pixelmap(ctx, map); + if (!pm) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapfv(map)"); + return; + } + + mapsize = pm->Size; + + if (!validate_pbo_access(ctx, &ctx->Pack, mapsize, GL_INTENSITY, + GL_FLOAT, bufSize, values)) { + return; + } + + values = (GLfloat *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values); + if (!values) { + if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetPixelMapfv(PBO is mapped)"); + } + return; + } + + if (map == GL_PIXEL_MAP_S_TO_S) { + /* special case */ + for (i = 0; i < mapsize; i++) { + values[i] = (GLfloat) ctx->PixelMaps.StoS.Map[i]; + } + } + else { + memcpy(values, pm->Map, mapsize * sizeof(GLfloat)); + } + + _mesa_unmap_pbo_dest(ctx, &ctx->Pack); +} + + +static void GLAPIENTRY +_mesa_GetPixelMapfv( GLenum map, GLfloat *values ) +{ + _mesa_GetnPixelMapfvARB(map, INT_MAX, values); +} + +static void GLAPIENTRY +_mesa_GetnPixelMapuivARB( GLenum map, GLsizei bufSize, GLuint *values ) +{ + GET_CURRENT_CONTEXT(ctx); + GLint mapsize, i; + const struct gl_pixelmap *pm; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + pm = get_pixelmap(ctx, map); + if (!pm) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapuiv(map)"); + return; + } + + mapsize = pm->Size; + + if (!validate_pbo_access(ctx, &ctx->Pack, mapsize, GL_INTENSITY, + GL_UNSIGNED_INT, bufSize, values)) { + return; + } + + values = (GLuint *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values); + if (!values) { + if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetPixelMapuiv(PBO is mapped)"); + } + return; + } + + if (map == GL_PIXEL_MAP_S_TO_S) { + /* special case */ + memcpy(values, ctx->PixelMaps.StoS.Map, mapsize * sizeof(GLint)); + } + else { + for (i = 0; i < mapsize; i++) { + values[i] = FLOAT_TO_UINT( pm->Map[i] ); + } + } + + _mesa_unmap_pbo_dest(ctx, &ctx->Pack); +} + + +static void GLAPIENTRY +_mesa_GetPixelMapuiv( GLenum map, GLuint *values ) +{ + _mesa_GetnPixelMapuivARB(map, INT_MAX, values); +} + +static void GLAPIENTRY +_mesa_GetnPixelMapusvARB( GLenum map, GLsizei bufSize, GLushort *values ) +{ + GET_CURRENT_CONTEXT(ctx); + GLint mapsize, i; + const struct gl_pixelmap *pm; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + pm = get_pixelmap(ctx, map); + if (!pm) { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelMapusv(map)"); + return; + } + + mapsize = pm->Size; + + if (!validate_pbo_access(ctx, &ctx->Pack, mapsize, GL_INTENSITY, + GL_UNSIGNED_SHORT, bufSize, values)) { + return; + } + + values = (GLushort *) _mesa_map_pbo_dest(ctx, &ctx->Pack, values); + if (!values) { + if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetPixelMapusv(PBO is mapped)"); + } + return; + } + + switch (map) { + /* special cases */ + case GL_PIXEL_MAP_I_TO_I: + for (i = 0; i < mapsize; i++) { + values[i] = (GLushort) CLAMP(ctx->PixelMaps.ItoI.Map[i], 0.0, 65535.); + } + break; + case GL_PIXEL_MAP_S_TO_S: + for (i = 0; i < mapsize; i++) { + values[i] = (GLushort) CLAMP(ctx->PixelMaps.StoS.Map[i], 0.0, 65535.); + } + break; + default: + for (i = 0; i < mapsize; i++) { + CLAMPED_FLOAT_TO_USHORT(values[i], pm->Map[i] ); + } + } + + _mesa_unmap_pbo_dest(ctx, &ctx->Pack); +} + + +static void GLAPIENTRY +_mesa_GetPixelMapusv( GLenum map, GLushort *values ) +{ + _mesa_GetnPixelMapusvARB(map, INT_MAX, values); +} + + +/**********************************************************************/ +/***** glPixelTransfer *****/ +/**********************************************************************/ + + +/* + * Implements glPixelTransfer[fi] whether called immediately or from a + * display list. + */ +static void GLAPIENTRY +_mesa_PixelTransferf( GLenum pname, GLfloat param ) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + switch (pname) { + case GL_MAP_COLOR: + if (ctx->Pixel.MapColorFlag == (param ? GL_TRUE : GL_FALSE)) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.MapColorFlag = param ? GL_TRUE : GL_FALSE; + break; + case GL_MAP_STENCIL: + if (ctx->Pixel.MapStencilFlag == (param ? GL_TRUE : GL_FALSE)) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.MapStencilFlag = param ? GL_TRUE : GL_FALSE; + break; + case GL_INDEX_SHIFT: + if (ctx->Pixel.IndexShift == (GLint) param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.IndexShift = (GLint) param; + break; + case GL_INDEX_OFFSET: + if (ctx->Pixel.IndexOffset == (GLint) param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.IndexOffset = (GLint) param; + break; + case GL_RED_SCALE: + if (ctx->Pixel.RedScale == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.RedScale = param; + break; + case GL_RED_BIAS: + if (ctx->Pixel.RedBias == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.RedBias = param; + break; + case GL_GREEN_SCALE: + if (ctx->Pixel.GreenScale == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.GreenScale = param; + break; + case GL_GREEN_BIAS: + if (ctx->Pixel.GreenBias == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.GreenBias = param; + break; + case GL_BLUE_SCALE: + if (ctx->Pixel.BlueScale == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.BlueScale = param; + break; + case GL_BLUE_BIAS: + if (ctx->Pixel.BlueBias == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.BlueBias = param; + break; + case GL_ALPHA_SCALE: + if (ctx->Pixel.AlphaScale == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.AlphaScale = param; + break; + case GL_ALPHA_BIAS: + if (ctx->Pixel.AlphaBias == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.AlphaBias = param; + break; + case GL_DEPTH_SCALE: + if (ctx->Pixel.DepthScale == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.DepthScale = param; + break; + case GL_DEPTH_BIAS: + if (ctx->Pixel.DepthBias == param) + return; + FLUSH_VERTICES(ctx, _NEW_PIXEL); + ctx->Pixel.DepthBias = param; + break; + default: + _mesa_error( ctx, GL_INVALID_ENUM, "glPixelTransfer(pname)" ); + return; + } +} + + +static void GLAPIENTRY +_mesa_PixelTransferi( GLenum pname, GLint param ) +{ + _mesa_PixelTransferf( pname, (GLfloat) param ); +} + + + +/**********************************************************************/ +/***** State Management *****/ +/**********************************************************************/ + +/* + * Return a bitmask of IMAGE_*_BIT flags which to indicate which + * pixel transfer operations are enabled. + */ +static void +update_image_transfer_state(struct gl_context *ctx) +{ + GLuint mask = 0; + + if (ctx->Pixel.RedScale != 1.0F || ctx->Pixel.RedBias != 0.0F || + ctx->Pixel.GreenScale != 1.0F || ctx->Pixel.GreenBias != 0.0F || + ctx->Pixel.BlueScale != 1.0F || ctx->Pixel.BlueBias != 0.0F || + ctx->Pixel.AlphaScale != 1.0F || ctx->Pixel.AlphaBias != 0.0F) + mask |= IMAGE_SCALE_BIAS_BIT; + + if (ctx->Pixel.IndexShift || ctx->Pixel.IndexOffset) + mask |= IMAGE_SHIFT_OFFSET_BIT; + + if (ctx->Pixel.MapColorFlag) + mask |= IMAGE_MAP_COLOR_BIT; + + ctx->_ImageTransferState = mask; +} + + +/** + * Update mesa pixel transfer derived state. + */ +void _mesa_update_pixel( struct gl_context *ctx, GLuint new_state ) +{ + if (new_state & _NEW_PIXEL) + update_image_transfer_state(ctx); +} + + +void +_mesa_init_pixel_dispatch(struct _glapi_table *disp) +{ + SET_GetPixelMapfv(disp, _mesa_GetPixelMapfv); + SET_GetPixelMapuiv(disp, _mesa_GetPixelMapuiv); + SET_GetPixelMapusv(disp, _mesa_GetPixelMapusv); + SET_PixelMapfv(disp, _mesa_PixelMapfv); + SET_PixelMapuiv(disp, _mesa_PixelMapuiv); + SET_PixelMapusv(disp, _mesa_PixelMapusv); + SET_PixelTransferf(disp, _mesa_PixelTransferf); + SET_PixelTransferi(disp, _mesa_PixelTransferi); + SET_PixelZoom(disp, _mesa_PixelZoom); + + /* GL_ARB_robustness */ + SET_GetnPixelMapfvARB(disp, _mesa_GetnPixelMapfvARB); + SET_GetnPixelMapuivARB(disp, _mesa_GetnPixelMapuivARB); + SET_GetnPixelMapusvARB(disp, _mesa_GetnPixelMapusvARB); +} + + +#endif /* FEATURE_pixel_transfer */ + + +/**********************************************************************/ +/***** Initialization *****/ +/**********************************************************************/ + +static void +init_pixelmap(struct gl_pixelmap *map) +{ + map->Size = 1; + map->Map[0] = 0.0; + map->Map8[0] = 0; +} + + +/** + * Initialize the context's PIXEL attribute group. + */ +void +_mesa_init_pixel( struct gl_context *ctx ) +{ + /* Pixel group */ + ctx->Pixel.RedBias = 0.0; + ctx->Pixel.RedScale = 1.0; + ctx->Pixel.GreenBias = 0.0; + ctx->Pixel.GreenScale = 1.0; + ctx->Pixel.BlueBias = 0.0; + ctx->Pixel.BlueScale = 1.0; + ctx->Pixel.AlphaBias = 0.0; + ctx->Pixel.AlphaScale = 1.0; + ctx->Pixel.DepthBias = 0.0; + ctx->Pixel.DepthScale = 1.0; + ctx->Pixel.IndexOffset = 0; + ctx->Pixel.IndexShift = 0; + ctx->Pixel.ZoomX = 1.0; + ctx->Pixel.ZoomY = 1.0; + ctx->Pixel.MapColorFlag = GL_FALSE; + ctx->Pixel.MapStencilFlag = GL_FALSE; + init_pixelmap(&ctx->PixelMaps.StoS); + init_pixelmap(&ctx->PixelMaps.ItoI); + init_pixelmap(&ctx->PixelMaps.ItoR); + init_pixelmap(&ctx->PixelMaps.ItoG); + init_pixelmap(&ctx->PixelMaps.ItoB); + init_pixelmap(&ctx->PixelMaps.ItoA); + init_pixelmap(&ctx->PixelMaps.RtoR); + init_pixelmap(&ctx->PixelMaps.GtoG); + init_pixelmap(&ctx->PixelMaps.BtoB); + init_pixelmap(&ctx->PixelMaps.AtoA); + + if (ctx->Visual.doubleBufferMode) { + ctx->Pixel.ReadBuffer = GL_BACK; + } + else { + ctx->Pixel.ReadBuffer = GL_FRONT; + } + + /* Miscellaneous */ + ctx->_ImageTransferState = 0; +} |