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PBO support for gl[Get]PixelMap functions

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This commit is contained in:
Brian Paul
2004-10-31 18:31:07 +00:00
parent 66f3231322
commit 331cc1dcba
1 changed files with 411 additions and 122 deletions
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521
src/mesa/main/pixel.c
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@@ -1,6 +1,6 @@
/*
* Mesa 3-D graphics library
* Version: 6.1
* Version: 6.3
*
* Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
*
@@ -23,10 +23,10 @@
*/
#include "glheader.h"
#include "imports.h"
#include "image.h"
#include "bufferobj.h"
#include "colormac.h"
#include "context.h"
#include "image.h"
#include "macros.h"
#include "pixel.h"
#include "mtypes.h"
@@ -253,14 +253,95 @@ _mesa_PixelStoref( GLenum pname, GLfloat param )
/**********************************************************************/
/**
* Helper routine used by the other _mesa_PixelMap() functions.
*/
static void
pixelmap(GLcontext *ctx, GLenum map, GLsizei mapsize, const GLfloat *values)
{
GLint i;
switch (map) {
case GL_PIXEL_MAP_S_TO_S:
ctx->Pixel.MapStoSsize = mapsize;
for (i = 0; i < mapsize; i++) {
ctx->Pixel.MapStoS[i] = (GLint) values[i];
}
break;
case GL_PIXEL_MAP_I_TO_I:
ctx->Pixel.MapItoIsize = mapsize;
for (i = 0; i < mapsize; i++) {
ctx->Pixel.MapItoI[i] = (GLint) values[i];
}
break;
case GL_PIXEL_MAP_I_TO_R:
ctx->Pixel.MapItoRsize = mapsize;
for (i = 0; i < mapsize; i++) {
GLfloat val = CLAMP( values[i], 0.0F, 1.0F );
ctx->Pixel.MapItoR[i] = val;
ctx->Pixel.MapItoR8[i] = (GLint) (val * 255.0F);
}
break;
case GL_PIXEL_MAP_I_TO_G:
ctx->Pixel.MapItoGsize = mapsize;
for (i = 0; i < mapsize; i++) {
GLfloat val = CLAMP( values[i], 0.0F, 1.0F );
ctx->Pixel.MapItoG[i] = val;
ctx->Pixel.MapItoG8[i] = (GLint) (val * 255.0F);
}
break;
case GL_PIXEL_MAP_I_TO_B:
ctx->Pixel.MapItoBsize = mapsize;
for (i = 0; i < mapsize; i++) {
GLfloat val = CLAMP( values[i], 0.0F, 1.0F );
ctx->Pixel.MapItoB[i] = val;
ctx->Pixel.MapItoB8[i] = (GLint) (val * 255.0F);
}
break;
case GL_PIXEL_MAP_I_TO_A:
ctx->Pixel.MapItoAsize = mapsize;
for (i = 0; i < mapsize; i++) {
GLfloat val = CLAMP( values[i], 0.0F, 1.0F );
ctx->Pixel.MapItoA[i] = val;
ctx->Pixel.MapItoA8[i] = (GLint) (val * 255.0F);
}
break;
case GL_PIXEL_MAP_R_TO_R:
ctx->Pixel.MapRtoRsize = mapsize;
for (i = 0; i < mapsize; i++) {
ctx->Pixel.MapRtoR[i] = CLAMP( values[i], 0.0F, 1.0F );
}
break;
case GL_PIXEL_MAP_G_TO_G:
ctx->Pixel.MapGtoGsize = mapsize;
for (i = 0; i < mapsize; i++) {
ctx->Pixel.MapGtoG[i] = CLAMP( values[i], 0.0F, 1.0F );
}
break;
case GL_PIXEL_MAP_B_TO_B:
ctx->Pixel.MapBtoBsize = mapsize;
for (i = 0; i < mapsize; i++) {
ctx->Pixel.MapBtoB[i] = CLAMP( values[i], 0.0F, 1.0F );
}
break;
case GL_PIXEL_MAP_A_TO_A:
ctx->Pixel.MapAtoAsize = mapsize;
for (i = 0; i < mapsize; i++) {
ctx->Pixel.MapAtoA[i] = CLAMP( values[i], 0.0F, 1.0F );
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glPixelMap(map)" );
}
}
void GLAPIENTRY
_mesa_PixelMapfv( GLenum map, GLsizei mapsize, const GLfloat *values )
{
GLint i;
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;
@@ -276,77 +357,39 @@ _mesa_PixelMapfv( GLenum map, GLsizei mapsize, const GLfloat *values )
FLUSH_VERTICES(ctx, _NEW_PIXEL);
switch (map) {
case GL_PIXEL_MAP_S_TO_S:
ctx->Pixel.MapStoSsize = mapsize;
for (i=0;i<mapsize;i++) {
ctx->Pixel.MapStoS[i] = (GLint) values[i];
if (ctx->Unpack.BufferObj->Name) {
/* unpack pixelmap from PBO */
GLubyte *buf;
/* Note, need to use DefaultPacking and Unpack's buffer object */
ctx->DefaultPacking.BufferObj = ctx->Unpack.BufferObj;
if (!_mesa_validate_pbo_access(&ctx->DefaultPacking, mapsize, 1, 1,
GL_INTENSITY, GL_FLOAT, values)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glPixelMapfv(invalid PBO access)");
return;
}
break;
case GL_PIXEL_MAP_I_TO_I:
ctx->Pixel.MapItoIsize = mapsize;
for (i=0;i<mapsize;i++) {
ctx->Pixel.MapItoI[i] = (GLint) values[i];
/* restore */
ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj;
buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
GL_READ_ONLY_ARB,
ctx->Unpack.BufferObj);
if (!buf) {
/* buffer is already mapped - that's an error */
_mesa_error(ctx, GL_INVALID_OPERATION,
"glPixelMapfv(PBO is mapped)");
return;
}
break;
case GL_PIXEL_MAP_I_TO_R:
ctx->Pixel.MapItoRsize = mapsize;
for (i=0;i<mapsize;i++) {
GLfloat val = CLAMP( values[i], 0.0F, 1.0F );
ctx->Pixel.MapItoR[i] = val;
ctx->Pixel.MapItoR8[i] = (GLint) (val * 255.0F);
values = (const GLfloat *) ADD_POINTERS(buf, values);
}
break;
case GL_PIXEL_MAP_I_TO_G:
ctx->Pixel.MapItoGsize = mapsize;
for (i=0;i<mapsize;i++) {
GLfloat val = CLAMP( values[i], 0.0F, 1.0F );
ctx->Pixel.MapItoG[i] = val;
ctx->Pixel.MapItoG8[i] = (GLint) (val * 255.0F);
else if (!values) {
return;
}
break;
case GL_PIXEL_MAP_I_TO_B:
ctx->Pixel.MapItoBsize = mapsize;
for (i=0;i<mapsize;i++) {
GLfloat val = CLAMP( values[i], 0.0F, 1.0F );
ctx->Pixel.MapItoB[i] = val;
ctx->Pixel.MapItoB8[i] = (GLint) (val * 255.0F);
}
break;
case GL_PIXEL_MAP_I_TO_A:
ctx->Pixel.MapItoAsize = mapsize;
for (i=0;i<mapsize;i++) {
GLfloat val = CLAMP( values[i], 0.0F, 1.0F );
ctx->Pixel.MapItoA[i] = val;
ctx->Pixel.MapItoA8[i] = (GLint) (val * 255.0F);
}
break;
case GL_PIXEL_MAP_R_TO_R:
ctx->Pixel.MapRtoRsize = mapsize;
for (i=0;i<mapsize;i++) {
ctx->Pixel.MapRtoR[i] = CLAMP( values[i], 0.0F, 1.0F );
}
break;
case GL_PIXEL_MAP_G_TO_G:
ctx->Pixel.MapGtoGsize = mapsize;
for (i=0;i<mapsize;i++) {
ctx->Pixel.MapGtoG[i] = CLAMP( values[i], 0.0F, 1.0F );
}
break;
case GL_PIXEL_MAP_B_TO_B:
ctx->Pixel.MapBtoBsize = mapsize;
for (i=0;i<mapsize;i++) {
ctx->Pixel.MapBtoB[i] = CLAMP( values[i], 0.0F, 1.0F );
}
break;
case GL_PIXEL_MAP_A_TO_A:
ctx->Pixel.MapAtoAsize = mapsize;
for (i=0;i<mapsize;i++) {
ctx->Pixel.MapAtoA[i] = CLAMP( values[i], 0.0F, 1.0F );
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glPixelMapfv(map)" );
pixelmap(ctx, map, mapsize, values);
if (ctx->Unpack.BufferObj->Name) {
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
ctx->Unpack.BufferObj);
}
}
@@ -355,20 +398,73 @@ _mesa_PixelMapfv( GLenum map, GLsizei mapsize, const GLfloat *values )
void GLAPIENTRY
_mesa_PixelMapuiv(GLenum map, GLsizei mapsize, const GLuint *values )
{
const GLint n = MIN2(mapsize, MAX_PIXEL_MAP_TABLE);
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_bitcount((GLuint) mapsize) != 1) {
_mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" );
return;
}
}
FLUSH_VERTICES(ctx, _NEW_PIXEL);
if (ctx->Unpack.BufferObj->Name) {
/* unpack pixelmap from PBO */
GLubyte *buf;
/* Note, need to use DefaultPacking and Unpack's buffer object */
ctx->DefaultPacking.BufferObj = ctx->Unpack.BufferObj;
if (!_mesa_validate_pbo_access(&ctx->DefaultPacking, mapsize, 1, 1,
GL_INTENSITY, GL_UNSIGNED_INT, values)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glPixelMapuiv(invalid PBO access)");
return;
}
/* restore */
ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj;
buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
GL_READ_ONLY_ARB,
ctx->Unpack.BufferObj);
if (!buf) {
/* buffer is already mapped - that's an error */
_mesa_error(ctx, GL_INVALID_OPERATION,
"glPixelMapuiv(PBO is mapped)");
return;
}
values = (const GLuint *) ADD_POINTERS(buf, values);
}
else if (!values) {
return;
}
/* convert to floats */
if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) {
GLint i;
if (map==GL_PIXEL_MAP_I_TO_I || map==GL_PIXEL_MAP_S_TO_S) {
for (i=0;i<n;i++) {
for (i = 0; i < mapsize; i++) {
fvalues[i] = (GLfloat) values[i];
}
}
else {
for (i=0;i<n;i++) {
GLint i;
for (i = 0; i < mapsize; i++) {
fvalues[i] = UINT_TO_FLOAT( values[i] );
}
}
_mesa_PixelMapfv(map, mapsize, fvalues);
if (ctx->Unpack.BufferObj->Name) {
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
ctx->Unpack.BufferObj);
}
pixelmap(ctx, map, mapsize, fvalues);
}
@@ -376,69 +472,190 @@ _mesa_PixelMapuiv(GLenum map, GLsizei mapsize, const GLuint *values )
void GLAPIENTRY
_mesa_PixelMapusv(GLenum map, GLsizei mapsize, const GLushort *values )
{
const GLint n = MIN2(mapsize, MAX_PIXEL_MAP_TABLE);
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_bitcount((GLuint) mapsize) != 1) {
_mesa_error( ctx, GL_INVALID_VALUE, "glPixelMapuiv(mapsize)" );
return;
}
}
FLUSH_VERTICES(ctx, _NEW_PIXEL);
if (ctx->Unpack.BufferObj->Name) {
/* unpack pixelmap from PBO */
GLubyte *buf;
/* Note, need to use DefaultPacking and Unpack's buffer object */
ctx->DefaultPacking.BufferObj = ctx->Unpack.BufferObj;
if (!_mesa_validate_pbo_access(&ctx->DefaultPacking, mapsize, 1, 1,
GL_INTENSITY, GL_UNSIGNED_SHORT,
values)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glPixelMapusv(invalid PBO access)");
return;
}
/* restore */
ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj;
buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
GL_READ_ONLY_ARB,
ctx->Unpack.BufferObj);
if (!buf) {
/* buffer is already mapped - that's an error */
_mesa_error(ctx, GL_INVALID_OPERATION,
"glPixelMapusv(PBO is mapped)");
return;
}
values = (const GLushort *) ADD_POINTERS(buf, values);
}
else if (!values) {
return;
}
/* convert to floats */
if (map == GL_PIXEL_MAP_I_TO_I || map == GL_PIXEL_MAP_S_TO_S) {
GLint i;
if (map==GL_PIXEL_MAP_I_TO_I || map==GL_PIXEL_MAP_S_TO_S) {
for (i=0;i<n;i++) {
for (i = 0; i < mapsize; i++) {
fvalues[i] = (GLfloat) values[i];
}
}
else {
for (i=0;i<n;i++) {
GLint i;
for (i = 0; i < mapsize; i++) {
fvalues[i] = USHORT_TO_FLOAT( values[i] );
}
}
_mesa_PixelMapfv(map, mapsize, fvalues);
if (ctx->Unpack.BufferObj->Name) {
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
ctx->Unpack.BufferObj);
}
pixelmap(ctx, map, mapsize, fvalues);
}
/**
* Return size of the named map.
*/
static GLuint
get_map_size(GLcontext *ctx, GLenum map)
{
switch (map) {
case GL_PIXEL_MAP_I_TO_I:
return ctx->Pixel.MapItoIsize;
case GL_PIXEL_MAP_S_TO_S:
return ctx->Pixel.MapStoSsize;
case GL_PIXEL_MAP_I_TO_R:
return ctx->Pixel.MapItoRsize;
case GL_PIXEL_MAP_I_TO_G:
return ctx->Pixel.MapItoGsize;
case GL_PIXEL_MAP_I_TO_B:
return ctx->Pixel.MapItoBsize;
case GL_PIXEL_MAP_I_TO_A:
return ctx->Pixel.MapItoAsize;
case GL_PIXEL_MAP_R_TO_R:
return ctx->Pixel.MapRtoRsize;
case GL_PIXEL_MAP_G_TO_G:
return ctx->Pixel.MapGtoGsize;
case GL_PIXEL_MAP_B_TO_B:
return ctx->Pixel.MapBtoBsize;
case GL_PIXEL_MAP_A_TO_A:
return ctx->Pixel.MapAtoAsize;
default:
return 0;
}
}
void GLAPIENTRY
_mesa_GetPixelMapfv( GLenum map, GLfloat *values )
{
GET_CURRENT_CONTEXT(ctx);
GLint i;
GLuint mapsize, i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
mapsize = get_map_size(ctx, map);
if (ctx->Pack.BufferObj->Name) {
/* pack pixelmap into PBO */
GLubyte *buf;
/* Note, need to use DefaultPacking and Pack's buffer object */
ctx->DefaultPacking.BufferObj = ctx->Pack.BufferObj;
if (!_mesa_validate_pbo_access(&ctx->DefaultPacking, mapsize, 1, 1,
GL_INTENSITY, GL_FLOAT, values)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetPixelMapfv(invalid PBO access)");
return;
}
/* restore */
ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj;
buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
GL_WRITE_ONLY_ARB,
ctx->Pack.BufferObj);
if (!buf) {
/* buffer is already mapped - that's an error */
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetPixelMapfv(PBO is mapped)");
return;
}
values = (GLfloat *) ADD_POINTERS(buf, values);
}
else if (!values) {
return;
}
switch (map) {
case GL_PIXEL_MAP_I_TO_I:
for (i=0;i<ctx->Pixel.MapItoIsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = (GLfloat) ctx->Pixel.MapItoI[i];
}
break;
case GL_PIXEL_MAP_S_TO_S:
for (i=0;i<ctx->Pixel.MapStoSsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = (GLfloat) ctx->Pixel.MapStoS[i];
}
break;
case GL_PIXEL_MAP_I_TO_R:
MEMCPY(values,ctx->Pixel.MapItoR,ctx->Pixel.MapItoRsize*sizeof(GLfloat));
MEMCPY(values, ctx->Pixel.MapItoR, mapsize * sizeof(GLfloat));
break;
case GL_PIXEL_MAP_I_TO_G:
MEMCPY(values,ctx->Pixel.MapItoG,ctx->Pixel.MapItoGsize*sizeof(GLfloat));
MEMCPY(values, ctx->Pixel.MapItoG, mapsize * sizeof(GLfloat));
break;
case GL_PIXEL_MAP_I_TO_B:
MEMCPY(values,ctx->Pixel.MapItoB,ctx->Pixel.MapItoBsize*sizeof(GLfloat));
MEMCPY(values, ctx->Pixel.MapItoB, mapsize * sizeof(GLfloat));
break;
case GL_PIXEL_MAP_I_TO_A:
MEMCPY(values,ctx->Pixel.MapItoA,ctx->Pixel.MapItoAsize*sizeof(GLfloat));
MEMCPY(values, ctx->Pixel.MapItoA, mapsize * sizeof(GLfloat));
break;
case GL_PIXEL_MAP_R_TO_R:
MEMCPY(values,ctx->Pixel.MapRtoR,ctx->Pixel.MapRtoRsize*sizeof(GLfloat));
MEMCPY(values, ctx->Pixel.MapRtoR, mapsize * sizeof(GLfloat));
break;
case GL_PIXEL_MAP_G_TO_G:
MEMCPY(values,ctx->Pixel.MapGtoG,ctx->Pixel.MapGtoGsize*sizeof(GLfloat));
MEMCPY(values, ctx->Pixel.MapGtoG, mapsize * sizeof(GLfloat));
break;
case GL_PIXEL_MAP_B_TO_B:
MEMCPY(values,ctx->Pixel.MapBtoB,ctx->Pixel.MapBtoBsize*sizeof(GLfloat));
MEMCPY(values, ctx->Pixel.MapBtoB, mapsize * sizeof(GLfloat));
break;
case GL_PIXEL_MAP_A_TO_A:
MEMCPY(values,ctx->Pixel.MapAtoA,ctx->Pixel.MapAtoAsize*sizeof(GLfloat));
MEMCPY(values, ctx->Pixel.MapAtoA, mapsize * sizeof(GLfloat));
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" );
}
if (ctx->Pack.BufferObj->Name) {
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
ctx->Pack.BufferObj);
}
}
@@ -446,59 +663,94 @@ void GLAPIENTRY
_mesa_GetPixelMapuiv( GLenum map, GLuint *values )
{
GET_CURRENT_CONTEXT(ctx);
GLint i;
GLint mapsize, i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
mapsize = get_map_size(ctx, map);
if (ctx->Pack.BufferObj->Name) {
/* pack pixelmap into PBO */
GLubyte *buf;
/* Note, need to use DefaultPacking and Pack's buffer object */
ctx->DefaultPacking.BufferObj = ctx->Pack.BufferObj;
if (!_mesa_validate_pbo_access(&ctx->DefaultPacking, mapsize, 1, 1,
GL_INTENSITY, GL_UNSIGNED_INT, values)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetPixelMapuiv(invalid PBO access)");
return;
}
/* restore */
ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj;
buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
GL_WRITE_ONLY_ARB,
ctx->Pack.BufferObj);
if (!buf) {
/* buffer is already mapped - that's an error */
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetPixelMapuiv(PBO is mapped)");
return;
}
values = (GLuint *) ADD_POINTERS(buf, values);
}
else if (!values) {
return;
}
switch (map) {
case GL_PIXEL_MAP_I_TO_I:
MEMCPY(values, ctx->Pixel.MapItoI, ctx->Pixel.MapItoIsize*sizeof(GLint));
MEMCPY(values, ctx->Pixel.MapItoI, mapsize * sizeof(GLint));
break;
case GL_PIXEL_MAP_S_TO_S:
MEMCPY(values, ctx->Pixel.MapStoS, ctx->Pixel.MapStoSsize*sizeof(GLint));
MEMCPY(values, ctx->Pixel.MapStoS, mapsize * sizeof(GLint));
break;
case GL_PIXEL_MAP_I_TO_R:
for (i=0;i<ctx->Pixel.MapItoRsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapItoR[i] );
}
break;
case GL_PIXEL_MAP_I_TO_G:
for (i=0;i<ctx->Pixel.MapItoGsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapItoG[i] );
}
break;
case GL_PIXEL_MAP_I_TO_B:
for (i=0;i<ctx->Pixel.MapItoBsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapItoB[i] );
}
break;
case GL_PIXEL_MAP_I_TO_A:
for (i=0;i<ctx->Pixel.MapItoAsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapItoA[i] );
}
break;
case GL_PIXEL_MAP_R_TO_R:
for (i=0;i<ctx->Pixel.MapRtoRsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapRtoR[i] );
}
break;
case GL_PIXEL_MAP_G_TO_G:
for (i=0;i<ctx->Pixel.MapGtoGsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapGtoG[i] );
}
break;
case GL_PIXEL_MAP_B_TO_B:
for (i=0;i<ctx->Pixel.MapBtoBsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapBtoB[i] );
}
break;
case GL_PIXEL_MAP_A_TO_A:
for (i=0;i<ctx->Pixel.MapAtoAsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_UINT( ctx->Pixel.MapAtoA[i] );
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" );
}
if (ctx->Pack.BufferObj->Name) {
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
ctx->Pack.BufferObj);
}
}
@@ -506,63 +758,99 @@ void GLAPIENTRY
_mesa_GetPixelMapusv( GLenum map, GLushort *values )
{
GET_CURRENT_CONTEXT(ctx);
GLint i;
GLint mapsize, i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
mapsize = get_map_size(ctx, map);
if (ctx->Pack.BufferObj->Name) {
/* pack pixelmap into PBO */
GLubyte *buf;
/* Note, need to use DefaultPacking and Pack's buffer object */
ctx->DefaultPacking.BufferObj = ctx->Pack.BufferObj;
if (!_mesa_validate_pbo_access(&ctx->DefaultPacking, mapsize, 1, 1,
GL_INTENSITY, GL_UNSIGNED_SHORT,
values)) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetPixelMapusv(invalid PBO access)");
return;
}
/* restore */
ctx->DefaultPacking.BufferObj = ctx->Array.NullBufferObj;
buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
GL_WRITE_ONLY_ARB,
ctx->Pack.BufferObj);
if (!buf) {
/* buffer is already mapped - that's an error */
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetPixelMapusv(PBO is mapped)");
return;
}
values = (GLushort *) ADD_POINTERS(buf, values);
}
else if (!values) {
return;
}
switch (map) {
case GL_PIXEL_MAP_I_TO_I:
for (i=0;i<ctx->Pixel.MapItoIsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = (GLushort) ctx->Pixel.MapItoI[i];
}
break;
case GL_PIXEL_MAP_S_TO_S:
for (i=0;i<ctx->Pixel.MapStoSsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = (GLushort) ctx->Pixel.MapStoS[i];
}
break;
case GL_PIXEL_MAP_I_TO_R:
for (i=0;i<ctx->Pixel.MapItoRsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapItoR[i] );
}
break;
case GL_PIXEL_MAP_I_TO_G:
for (i=0;i<ctx->Pixel.MapItoGsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapItoG[i] );
}
break;
case GL_PIXEL_MAP_I_TO_B:
for (i=0;i<ctx->Pixel.MapItoBsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapItoB[i] );
}
break;
case GL_PIXEL_MAP_I_TO_A:
for (i=0;i<ctx->Pixel.MapItoAsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapItoA[i] );
}
break;
case GL_PIXEL_MAP_R_TO_R:
for (i=0;i<ctx->Pixel.MapRtoRsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapRtoR[i] );
}
break;
case GL_PIXEL_MAP_G_TO_G:
for (i=0;i<ctx->Pixel.MapGtoGsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapGtoG[i] );
}
break;
case GL_PIXEL_MAP_B_TO_B:
for (i=0;i<ctx->Pixel.MapBtoBsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapBtoB[i] );
}
break;
case GL_PIXEL_MAP_A_TO_A:
for (i=0;i<ctx->Pixel.MapAtoAsize;i++) {
for (i = 0; i < mapsize; i++) {
values[i] = FLOAT_TO_USHORT( ctx->Pixel.MapAtoA[i] );
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glGetPixelMapfv" );
}
if (ctx->Pack.BufferObj->Name) {
ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT,
ctx->Pack.BufferObj);
}
}
@@ -776,16 +1064,17 @@ _mesa_PixelTransferi( GLenum pname, GLint param )
_mesa_PixelTransferf( pname, (GLfloat) param );
}
/**********************************************************************/
/***** Pixel processing functions ******/
/**********************************************************************/
/*
* Apply scale and bias factors to an array of RGBA pixels.
*/
void
_mesa_scale_and_bias_rgba(const GLcontext *ctx, GLuint n, GLfloat rgba[][4],
_mesa_scale_and_bias_rgba(GLcontext *ctx, GLuint n, GLfloat rgba[][4],
GLfloat rScale, GLfloat gScale,
GLfloat bScale, GLfloat aScale,
GLfloat rBias, GLfloat gBias,