diff options
Diffstat (limited to 'mesalib/src/mesa/main/colortab.c')
| -rw-r--r-- | mesalib/src/mesa/main/colortab.c | 1755 |
1 files changed, 821 insertions, 934 deletions
diff --git a/mesalib/src/mesa/main/colortab.c b/mesalib/src/mesa/main/colortab.c index 9c23e253b..d0c865735 100644 --- a/mesalib/src/mesa/main/colortab.c +++ b/mesalib/src/mesa/main/colortab.c @@ -1,934 +1,821 @@ -/*
- * Mesa 3-D graphics library
- * Version: 7.1
- *
- * Copyright (C) 1999-2007 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.
- */
-
-
-#include "glheader.h"
-#include "bufferobj.h"
-#include "colortab.h"
-#include "context.h"
-#include "image.h"
-#include "macros.h"
-#include "mfeatures.h"
-#include "mtypes.h"
-#include "pack.h"
-#include "state.h"
-#include "teximage.h"
-#include "texstate.h"
-#include "main/dispatch.h"
-
-
-#if FEATURE_colortable
-
-
-/**
- * Given an internalFormat token passed to glColorTable,
- * return the corresponding base format.
- * Return -1 if invalid token.
- */
-static GLint
-base_colortab_format( GLenum format )
-{
- switch (format) {
- case GL_ALPHA:
- case GL_ALPHA4:
- case GL_ALPHA8:
- case GL_ALPHA12:
- case GL_ALPHA16:
- return GL_ALPHA;
- case GL_LUMINANCE:
- case GL_LUMINANCE4:
- case GL_LUMINANCE8:
- case GL_LUMINANCE12:
- case GL_LUMINANCE16:
- return GL_LUMINANCE;
- case GL_LUMINANCE_ALPHA:
- case GL_LUMINANCE4_ALPHA4:
- case GL_LUMINANCE6_ALPHA2:
- case GL_LUMINANCE8_ALPHA8:
- case GL_LUMINANCE12_ALPHA4:
- case GL_LUMINANCE12_ALPHA12:
- case GL_LUMINANCE16_ALPHA16:
- return GL_LUMINANCE_ALPHA;
- case GL_INTENSITY:
- case GL_INTENSITY4:
- case GL_INTENSITY8:
- case GL_INTENSITY12:
- case GL_INTENSITY16:
- return GL_INTENSITY;
- case GL_RGB:
- case GL_R3_G3_B2:
- case GL_RGB4:
- case GL_RGB5:
- case GL_RGB8:
- case GL_RGB10:
- case GL_RGB12:
- case GL_RGB16:
- return GL_RGB;
- case GL_RGBA:
- case GL_RGBA2:
- case GL_RGBA4:
- case GL_RGB5_A1:
- case GL_RGBA8:
- case GL_RGB10_A2:
- case GL_RGBA12:
- case GL_RGBA16:
- return GL_RGBA;
- default:
- return -1; /* error */
- }
-}
-
-
-
-/**
- * Examine table's format and set the component sizes accordingly.
- */
-static void
-set_component_sizes( struct gl_color_table *table )
-{
- /* assuming the ubyte table */
- const GLubyte sz = 8;
-
- switch (table->_BaseFormat) {
- case GL_ALPHA:
- table->RedSize = 0;
- table->GreenSize = 0;
- table->BlueSize = 0;
- table->AlphaSize = sz;
- table->IntensitySize = 0;
- table->LuminanceSize = 0;
- break;
- case GL_LUMINANCE:
- table->RedSize = 0;
- table->GreenSize = 0;
- table->BlueSize = 0;
- table->AlphaSize = 0;
- table->IntensitySize = 0;
- table->LuminanceSize = sz;
- break;
- case GL_LUMINANCE_ALPHA:
- table->RedSize = 0;
- table->GreenSize = 0;
- table->BlueSize = 0;
- table->AlphaSize = sz;
- table->IntensitySize = 0;
- table->LuminanceSize = sz;
- break;
- case GL_INTENSITY:
- table->RedSize = 0;
- table->GreenSize = 0;
- table->BlueSize = 0;
- table->AlphaSize = 0;
- table->IntensitySize = sz;
- table->LuminanceSize = 0;
- break;
- case GL_RGB:
- table->RedSize = sz;
- table->GreenSize = sz;
- table->BlueSize = sz;
- table->AlphaSize = 0;
- table->IntensitySize = 0;
- table->LuminanceSize = 0;
- break;
- case GL_RGBA:
- table->RedSize = sz;
- table->GreenSize = sz;
- table->BlueSize = sz;
- table->AlphaSize = sz;
- table->IntensitySize = 0;
- table->LuminanceSize = 0;
- break;
- default:
- _mesa_problem(NULL, "unexpected format in set_component_sizes");
- }
-}
-
-
-
-/**
- * Update/replace all or part of a color table. Helper function
- * used by _mesa_ColorTable() and _mesa_ColorSubTable().
- * The table->Table buffer should already be allocated.
- * \param start first entry to update
- * \param count number of entries to update
- * \param format format of user-provided table data
- * \param type datatype of user-provided table data
- * \param data user-provided table data
- * \param [rgba]Scale - RGBA scale factors
- * \param [rgba]Bias - RGBA bias factors
- */
-static void
-store_colortable_entries(struct gl_context *ctx, struct gl_color_table *table,
- GLsizei start, GLsizei count,
- GLenum format, GLenum type, const GLvoid *data,
- GLfloat rScale, GLfloat rBias,
- GLfloat gScale, GLfloat gBias,
- GLfloat bScale, GLfloat bBias,
- GLfloat aScale, GLfloat aBias)
-{
- data = _mesa_map_validate_pbo_source(ctx,
- 1, &ctx->Unpack, count, 1, 1,
- format, type, data,
- "glColor[Sub]Table");
- if (!data)
- return;
-
- {
- /* convert user-provided data to GLfloat values */
- GLfloat tempTab[MAX_COLOR_TABLE_SIZE * 4];
- GLfloat *tableF;
- GLint i;
-
- _mesa_unpack_color_span_float(ctx,
- count, /* number of pixels */
- table->_BaseFormat, /* dest format */
- tempTab, /* dest address */
- format, type, /* src format/type */
- data, /* src data */
- &ctx->Unpack,
- IMAGE_CLAMP_BIT); /* transfer ops */
-
- /* the destination */
- tableF = table->TableF;
-
- /* Apply scale & bias & clamp now */
- switch (table->_BaseFormat) {
- case GL_INTENSITY:
- for (i = 0; i < count; i++) {
- GLuint j = start + i;
- tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
- }
- break;
- case GL_LUMINANCE:
- for (i = 0; i < count; i++) {
- GLuint j = start + i;
- tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
- }
- break;
- case GL_ALPHA:
- for (i = 0; i < count; i++) {
- GLuint j = start + i;
- tableF[j] = CLAMP(tempTab[i] * aScale + aBias, 0.0F, 1.0F);
- }
- break;
- case GL_LUMINANCE_ALPHA:
- for (i = 0; i < count; i++) {
- GLuint j = start + i;
- tableF[j*2+0] = CLAMP(tempTab[i*2+0] * rScale + rBias, 0.0F, 1.0F);
- tableF[j*2+1] = CLAMP(tempTab[i*2+1] * aScale + aBias, 0.0F, 1.0F);
- }
- break;
- case GL_RGB:
- for (i = 0; i < count; i++) {
- GLuint j = start + i;
- tableF[j*3+0] = CLAMP(tempTab[i*3+0] * rScale + rBias, 0.0F, 1.0F);
- tableF[j*3+1] = CLAMP(tempTab[i*3+1] * gScale + gBias, 0.0F, 1.0F);
- tableF[j*3+2] = CLAMP(tempTab[i*3+2] * bScale + bBias, 0.0F, 1.0F);
- }
- break;
- case GL_RGBA:
- for (i = 0; i < count; i++) {
- GLuint j = start + i;
- tableF[j*4+0] = CLAMP(tempTab[i*4+0] * rScale + rBias, 0.0F, 1.0F);
- tableF[j*4+1] = CLAMP(tempTab[i*4+1] * gScale + gBias, 0.0F, 1.0F);
- tableF[j*4+2] = CLAMP(tempTab[i*4+2] * bScale + bBias, 0.0F, 1.0F);
- tableF[j*4+3] = CLAMP(tempTab[i*4+3] * aScale + aBias, 0.0F, 1.0F);
- }
- break;
- default:
- _mesa_problem(ctx, "Bad format in store_colortable_entries");
- return;
- }
- }
-
- /* update the ubyte table */
- {
- const GLint comps = _mesa_components_in_format(table->_BaseFormat);
- const GLfloat *tableF = table->TableF + start * comps;
- GLubyte *tableUB = table->TableUB + start * comps;
- GLint i;
- for (i = 0; i < count * comps; i++) {
- CLAMPED_FLOAT_TO_UBYTE(tableUB[i], tableF[i]);
- }
- }
-
- _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
-}
-
-
-
-void GLAPIENTRY
-_mesa_ColorTable( GLenum target, GLenum internalFormat,
- GLsizei width, GLenum format, GLenum type,
- const GLvoid *data )
-{
- static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
- static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
- GET_CURRENT_CONTEXT(ctx);
- struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
- struct gl_texture_object *texObj = NULL;
- struct gl_color_table *table = NULL;
- GLboolean proxy = GL_FALSE;
- GLint baseFormat;
- const GLfloat *scale = one, *bias = zero;
- GLint comps;
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
-
- switch (target) {
- case GL_SHARED_TEXTURE_PALETTE_EXT:
- table = &ctx->Texture.Palette;
- break;
- case GL_TEXTURE_COLOR_TABLE_SGI:
- if (!ctx->Extensions.SGI_texture_color_table) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
- return;
- }
- table = &(texUnit->ColorTable);
- scale = ctx->Pixel.TextureColorTableScale;
- bias = ctx->Pixel.TextureColorTableBias;
- break;
- case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
- if (!ctx->Extensions.SGI_texture_color_table) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
- return;
- }
- table = &(texUnit->ProxyColorTable);
- proxy = GL_TRUE;
- break;
- default:
- /* try texture targets */
- {
- struct gl_texture_object *texobj
- = _mesa_select_tex_object(ctx, texUnit, target);
- if (texobj) {
- table = &texobj->Palette;
- proxy = _mesa_is_proxy_texture(target);
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
- return;
- }
- }
- }
-
- assert(table);
-
- if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
- format == GL_INTENSITY) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)");
- return;
- }
-
- baseFormat = base_colortab_format(internalFormat);
- if (baseFormat < 0) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
- return;
- }
-
- if (width < 0 || (width != 0 && !_mesa_is_pow_two(width))) {
- /* error */
- if (proxy) {
- table->Size = 0;
- table->InternalFormat = (GLenum) 0;
- table->_BaseFormat = (GLenum) 0;
- }
- else {
- _mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width);
- }
- return;
- }
-
- if (width > (GLsizei) ctx->Const.MaxColorTableSize) {
- if (proxy) {
- table->Size = 0;
- table->InternalFormat = (GLenum) 0;
- table->_BaseFormat = (GLenum) 0;
- }
- else {
- _mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");
- }
- return;
- }
-
- table->Size = width;
- table->InternalFormat = internalFormat;
- table->_BaseFormat = (GLenum) baseFormat;
-
- comps = _mesa_components_in_format(table->_BaseFormat);
- assert(comps > 0); /* error should have been caught sooner */
-
- if (!proxy) {
- _mesa_free_colortable_data(table);
-
- if (width > 0) {
- table->TableF = (GLfloat *) malloc(comps * width * sizeof(GLfloat));
- table->TableUB = (GLubyte *) malloc(comps * width * sizeof(GLubyte));
-
- if (!table->TableF || !table->TableUB) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable");
- return;
- }
-
- store_colortable_entries(ctx, table,
- 0, width, /* start, count */
- format, type, data,
- scale[0], bias[0],
- scale[1], bias[1],
- scale[2], bias[2],
- scale[3], bias[3]);
- }
- } /* proxy */
-
- /* do this after the table's Type and Format are set */
- set_component_sizes(table);
-
- if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
- /* texture object palette, texObj==NULL means the shared palette */
- if (ctx->Driver.UpdateTexturePalette) {
- (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
- }
- }
-
- ctx->NewState |= _NEW_PIXEL;
-}
-
-
-
-void GLAPIENTRY
-_mesa_ColorSubTable( GLenum target, GLsizei start,
- GLsizei count, GLenum format, GLenum type,
- const GLvoid *data )
-{
- static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
- static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
- GET_CURRENT_CONTEXT(ctx);
- struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
- struct gl_texture_object *texObj = NULL;
- struct gl_color_table *table = NULL;
- const GLfloat *scale = one, *bias = zero;
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- switch (target) {
- case GL_SHARED_TEXTURE_PALETTE_EXT:
- table = &ctx->Texture.Palette;
- break;
- case GL_TEXTURE_COLOR_TABLE_SGI:
- if (!ctx->Extensions.SGI_texture_color_table) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
- return;
- }
- table = &(texUnit->ColorTable);
- scale = ctx->Pixel.TextureColorTableScale;
- bias = ctx->Pixel.TextureColorTableBias;
- break;
- default:
- /* try texture targets */
- texObj = _mesa_select_tex_object(ctx, texUnit, target);
- if (texObj && !_mesa_is_proxy_texture(target)) {
- table = &texObj->Palette;
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
- return;
- }
- }
-
- assert(table);
-
- if (!_mesa_is_legal_format_and_type(ctx, format, type) ||
- format == GL_INTENSITY) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glColorSubTable(format or type)");
- return;
- }
-
- if (count < 1) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
- return;
- }
-
- /* error should have been caught sooner */
- assert(_mesa_components_in_format(table->_BaseFormat) > 0);
-
- if (start + count > (GLint) table->Size) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
- return;
- }
-
- if (!table->TableF || !table->TableUB) {
- /* a GL_OUT_OF_MEMORY error would have been recorded previously */
- return;
- }
-
- store_colortable_entries(ctx, table, start, count,
- format, type, data,
- scale[0], bias[0],
- scale[1], bias[1],
- scale[2], bias[2],
- scale[3], bias[3]);
-
- if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) {
- /* per-texture object palette */
- if (ctx->Driver.UpdateTexturePalette) {
- (*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
- }
- }
-
- ctx->NewState |= _NEW_PIXEL;
-}
-
-
-
-static void GLAPIENTRY
-_mesa_CopyColorTable(GLenum target, GLenum internalformat,
- GLint x, GLint y, GLsizei width)
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- if (!ctx->ReadBuffer->_ColorReadBuffer) {
- return; /* no readbuffer - OK */
- }
-
- ctx->Driver.CopyColorTable( ctx, target, internalformat, x, y, width );
-}
-
-
-
-static void GLAPIENTRY
-_mesa_CopyColorSubTable(GLenum target, GLsizei start,
- GLint x, GLint y, GLsizei width)
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- if (!ctx->ReadBuffer->_ColorReadBuffer) {
- return; /* no readbuffer - OK */
- }
-
- ctx->Driver.CopyColorSubTable( ctx, target, start, x, y, width );
-}
-
-
-
-static void GLAPIENTRY
-_mesa_GetColorTable( GLenum target, GLenum format,
- GLenum type, GLvoid *data )
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
- struct gl_color_table *table = NULL;
- GLfloat rgba[MAX_COLOR_TABLE_SIZE][4];
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- if (ctx->NewState) {
- _mesa_update_state(ctx);
- }
-
- switch (target) {
- case GL_SHARED_TEXTURE_PALETTE_EXT:
- table = &ctx->Texture.Palette;
- break;
- case GL_TEXTURE_COLOR_TABLE_SGI:
- if (!ctx->Extensions.SGI_texture_color_table) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
- return;
- }
- table = &(texUnit->ColorTable);
- break;
- default:
- /* try texture targets */
- {
- struct gl_texture_object *texobj
- = _mesa_select_tex_object(ctx, texUnit, target);
- if (texobj && !_mesa_is_proxy_texture(target)) {
- table = &texobj->Palette;
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
- return;
- }
- }
- }
-
- ASSERT(table);
-
- if (table->Size <= 0) {
- return;
- }
-
- switch (table->_BaseFormat) {
- case GL_ALPHA:
- {
- GLuint i;
- for (i = 0; i < table->Size; i++) {
- rgba[i][RCOMP] = 0;
- rgba[i][GCOMP] = 0;
- rgba[i][BCOMP] = 0;
- rgba[i][ACOMP] = table->TableF[i];
- }
- }
- break;
- case GL_LUMINANCE:
- {
- GLuint i;
- for (i = 0; i < table->Size; i++) {
- rgba[i][RCOMP] =
- rgba[i][GCOMP] =
- rgba[i][BCOMP] = table->TableF[i];
- rgba[i][ACOMP] = 1.0F;
- }
- }
- break;
- case GL_LUMINANCE_ALPHA:
- {
- GLuint i;
- for (i = 0; i < table->Size; i++) {
- rgba[i][RCOMP] =
- rgba[i][GCOMP] =
- rgba[i][BCOMP] = table->TableF[i*2+0];
- rgba[i][ACOMP] = table->TableF[i*2+1];
- }
- }
- break;
- case GL_INTENSITY:
- {
- GLuint i;
- for (i = 0; i < table->Size; i++) {
- rgba[i][RCOMP] =
- rgba[i][GCOMP] =
- rgba[i][BCOMP] =
- rgba[i][ACOMP] = table->TableF[i];
- }
- }
- break;
- case GL_RGB:
- {
- GLuint i;
- for (i = 0; i < table->Size; i++) {
- rgba[i][RCOMP] = table->TableF[i*3+0];
- rgba[i][GCOMP] = table->TableF[i*3+1];
- rgba[i][BCOMP] = table->TableF[i*3+2];
- rgba[i][ACOMP] = 1.0F;
- }
- }
- break;
- case GL_RGBA:
- memcpy(rgba, table->TableF, 4 * table->Size * sizeof(GLfloat));
- break;
- default:
- _mesa_problem(ctx, "bad table format in glGetColorTable");
- return;
- }
-
- data = _mesa_map_validate_pbo_dest(ctx,
- 1, &ctx->Pack, table->Size, 1, 1,
- format, type, data,
- "glGetColorTable");
- if (!data)
- return;
-
- _mesa_pack_rgba_span_float(ctx, table->Size, rgba,
- format, type, data, &ctx->Pack, 0x0);
-
- _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
-}
-
-
-
-static void GLAPIENTRY
-_mesa_ColorTableParameterfv(GLenum target, GLenum pname, const GLfloat *params)
-{
- GLfloat *scale, *bias;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- switch (target) {
- case GL_TEXTURE_COLOR_TABLE_SGI:
- scale = ctx->Pixel.TextureColorTableScale;
- bias = ctx->Pixel.TextureColorTableBias;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameter(target)");
- return;
- }
-
- if (pname == GL_COLOR_TABLE_SCALE_SGI) {
- COPY_4V(scale, params);
- }
- else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
- COPY_4V(bias, params);
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(pname)");
- return;
- }
-
- ctx->NewState |= _NEW_PIXEL;
-}
-
-
-
-static void GLAPIENTRY
-_mesa_ColorTableParameteriv(GLenum target, GLenum pname, const GLint *params)
-{
- GLfloat fparams[4];
- if (pname == GL_TEXTURE_COLOR_TABLE_SGI) {
- /* four values */
- fparams[0] = (GLfloat) params[0];
- fparams[1] = (GLfloat) params[1];
- fparams[2] = (GLfloat) params[2];
- fparams[3] = (GLfloat) params[3];
- }
- else {
- /* one values */
- fparams[0] = (GLfloat) params[0];
- }
- _mesa_ColorTableParameterfv(target, pname, fparams);
-}
-
-
-
-static void GLAPIENTRY
-_mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params )
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
- struct gl_color_table *table = NULL;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- switch (target) {
- case GL_SHARED_TEXTURE_PALETTE_EXT:
- table = &ctx->Texture.Palette;
- break;
- case GL_TEXTURE_COLOR_TABLE_SGI:
- if (!ctx->Extensions.SGI_texture_color_table) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
- return;
- }
- table = &(texUnit->ColorTable);
- if (pname == GL_COLOR_TABLE_SCALE_SGI) {
- COPY_4V(params, ctx->Pixel.TextureColorTableScale);
- return;
- }
- else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
- COPY_4V(params, ctx->Pixel.TextureColorTableBias);
- return;
- }
- break;
- case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
- if (!ctx->Extensions.SGI_texture_color_table) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
- return;
- }
- table = &(texUnit->ProxyColorTable);
- break;
- default:
- /* try texture targets */
- {
- struct gl_texture_object *texobj
- = _mesa_select_tex_object(ctx, texUnit, target);
- if (texobj) {
- table = &texobj->Palette;
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetColorTableParameterfv(target)");
- return;
- }
- }
- }
-
- assert(table);
-
- switch (pname) {
- case GL_COLOR_TABLE_FORMAT:
- *params = (GLfloat) table->InternalFormat;
- break;
- case GL_COLOR_TABLE_WIDTH:
- *params = (GLfloat) table->Size;
- break;
- case GL_COLOR_TABLE_RED_SIZE:
- *params = (GLfloat) table->RedSize;
- break;
- case GL_COLOR_TABLE_GREEN_SIZE:
- *params = (GLfloat) table->GreenSize;
- break;
- case GL_COLOR_TABLE_BLUE_SIZE:
- *params = (GLfloat) table->BlueSize;
- break;
- case GL_COLOR_TABLE_ALPHA_SIZE:
- *params = (GLfloat) table->AlphaSize;
- break;
- case GL_COLOR_TABLE_LUMINANCE_SIZE:
- *params = (GLfloat) table->LuminanceSize;
- break;
- case GL_COLOR_TABLE_INTENSITY_SIZE:
- *params = (GLfloat) table->IntensitySize;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameterfv(pname)" );
- return;
- }
-}
-
-
-
-static void GLAPIENTRY
-_mesa_GetColorTableParameteriv( GLenum target, GLenum pname, GLint *params )
-{
- GET_CURRENT_CONTEXT(ctx);
- struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
- struct gl_color_table *table = NULL;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- switch (target) {
- case GL_SHARED_TEXTURE_PALETTE_EXT:
- table = &ctx->Texture.Palette;
- break;
- case GL_TEXTURE_COLOR_TABLE_SGI:
- if (!ctx->Extensions.SGI_texture_color_table) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
- return;
- }
- table = &(texUnit->ColorTable);
- if (pname == GL_COLOR_TABLE_SCALE_SGI) {
- params[0] = (GLint) ctx->Pixel.TextureColorTableScale[0];
- params[1] = (GLint) ctx->Pixel.TextureColorTableScale[1];
- params[2] = (GLint) ctx->Pixel.TextureColorTableScale[2];
- params[3] = (GLint) ctx->Pixel.TextureColorTableScale[3];
- return;
- }
- else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
- params[0] = (GLint) ctx->Pixel.TextureColorTableBias[0];
- params[1] = (GLint) ctx->Pixel.TextureColorTableBias[1];
- params[2] = (GLint) ctx->Pixel.TextureColorTableBias[2];
- params[3] = (GLint) ctx->Pixel.TextureColorTableBias[3];
- return;
- }
- break;
- case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
- if (!ctx->Extensions.SGI_texture_color_table) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
- return;
- }
- table = &(texUnit->ProxyColorTable);
- break;
- default:
- /* Try texture targets */
- {
- struct gl_texture_object *texobj
- = _mesa_select_tex_object(ctx, texUnit, target);
- if (texobj) {
- table = &texobj->Palette;
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetColorTableParameteriv(target)");
- return;
- }
- }
- }
-
- assert(table);
-
- switch (pname) {
- case GL_COLOR_TABLE_FORMAT:
- *params = table->InternalFormat;
- break;
- case GL_COLOR_TABLE_WIDTH:
- *params = table->Size;
- break;
- case GL_COLOR_TABLE_RED_SIZE:
- *params = table->RedSize;
- break;
- case GL_COLOR_TABLE_GREEN_SIZE:
- *params = table->GreenSize;
- break;
- case GL_COLOR_TABLE_BLUE_SIZE:
- *params = table->BlueSize;
- break;
- case GL_COLOR_TABLE_ALPHA_SIZE:
- *params = table->AlphaSize;
- break;
- case GL_COLOR_TABLE_LUMINANCE_SIZE:
- *params = table->LuminanceSize;
- break;
- case GL_COLOR_TABLE_INTENSITY_SIZE:
- *params = table->IntensitySize;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameteriv(pname)" );
- return;
- }
-}
-
-
-void
-_mesa_init_colortable_dispatch(struct _glapi_table *disp)
-{
- SET_ColorSubTable(disp, _mesa_ColorSubTable);
- SET_ColorTable(disp, _mesa_ColorTable);
- SET_ColorTableParameterfv(disp, _mesa_ColorTableParameterfv);
- SET_ColorTableParameteriv(disp, _mesa_ColorTableParameteriv);
- SET_CopyColorSubTable(disp, _mesa_CopyColorSubTable);
- SET_CopyColorTable(disp, _mesa_CopyColorTable);
- SET_GetColorTable(disp, _mesa_GetColorTable);
- SET_GetColorTableParameterfv(disp, _mesa_GetColorTableParameterfv);
- SET_GetColorTableParameteriv(disp, _mesa_GetColorTableParameteriv);
-}
-
-
-#endif /* FEATURE_colortable */
-
-
-/**********************************************************************/
-/***** Initialization *****/
-/**********************************************************************/
-
-
-void
-_mesa_init_colortable( struct gl_color_table *p )
-{
- p->TableF = NULL;
- p->TableUB = NULL;
- p->Size = 0;
- p->InternalFormat = GL_RGBA;
-}
-
-
-
-void
-_mesa_free_colortable_data( struct gl_color_table *p )
-{
- if (p->TableF) {
- free(p->TableF);
- p->TableF = NULL;
- }
- if (p->TableUB) {
- free(p->TableUB);
- p->TableUB = NULL;
- }
-}
+/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2007 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. + */ + + +#include "glheader.h" +#include "bufferobj.h" +#include "colortab.h" +#include "context.h" +#include "image.h" +#include "macros.h" +#include "mfeatures.h" +#include "mtypes.h" +#include "pack.h" +#include "pbo.h" +#include "state.h" +#include "teximage.h" +#include "texstate.h" +#include "main/dispatch.h" + + +#if FEATURE_colortable + + +/** + * Given an internalFormat token passed to glColorTable, + * return the corresponding base format. + * Return -1 if invalid token. + */ +static GLint +base_colortab_format( GLenum format ) +{ + switch (format) { + case GL_ALPHA: + case GL_ALPHA4: + case GL_ALPHA8: + case GL_ALPHA12: + case GL_ALPHA16: + return GL_ALPHA; + case GL_LUMINANCE: + case GL_LUMINANCE4: + case GL_LUMINANCE8: + case GL_LUMINANCE12: + case GL_LUMINANCE16: + return GL_LUMINANCE; + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE4_ALPHA4: + case GL_LUMINANCE6_ALPHA2: + case GL_LUMINANCE8_ALPHA8: + case GL_LUMINANCE12_ALPHA4: + case GL_LUMINANCE12_ALPHA12: + case GL_LUMINANCE16_ALPHA16: + return GL_LUMINANCE_ALPHA; + case GL_INTENSITY: + case GL_INTENSITY4: + case GL_INTENSITY8: + case GL_INTENSITY12: + case GL_INTENSITY16: + return GL_INTENSITY; + case GL_RGB: + case GL_R3_G3_B2: + case GL_RGB4: + case GL_RGB5: + case GL_RGB8: + case GL_RGB10: + case GL_RGB12: + case GL_RGB16: + return GL_RGB; + case GL_RGBA: + case GL_RGBA2: + case GL_RGBA4: + case GL_RGB5_A1: + case GL_RGBA8: + case GL_RGB10_A2: + case GL_RGBA12: + case GL_RGBA16: + return GL_RGBA; + default: + return -1; /* error */ + } +} + + + +/** + * Examine table's format and set the component sizes accordingly. + */ +static void +set_component_sizes( struct gl_color_table *table ) +{ + /* assuming the ubyte table */ + const GLubyte sz = 8; + + switch (table->_BaseFormat) { + case GL_ALPHA: + table->RedSize = 0; + table->GreenSize = 0; + table->BlueSize = 0; + table->AlphaSize = sz; + table->IntensitySize = 0; + table->LuminanceSize = 0; + break; + case GL_LUMINANCE: + table->RedSize = 0; + table->GreenSize = 0; + table->BlueSize = 0; + table->AlphaSize = 0; + table->IntensitySize = 0; + table->LuminanceSize = sz; + break; + case GL_LUMINANCE_ALPHA: + table->RedSize = 0; + table->GreenSize = 0; + table->BlueSize = 0; + table->AlphaSize = sz; + table->IntensitySize = 0; + table->LuminanceSize = sz; + break; + case GL_INTENSITY: + table->RedSize = 0; + table->GreenSize = 0; + table->BlueSize = 0; + table->AlphaSize = 0; + table->IntensitySize = sz; + table->LuminanceSize = 0; + break; + case GL_RGB: + table->RedSize = sz; + table->GreenSize = sz; + table->BlueSize = sz; + table->AlphaSize = 0; + table->IntensitySize = 0; + table->LuminanceSize = 0; + break; + case GL_RGBA: + table->RedSize = sz; + table->GreenSize = sz; + table->BlueSize = sz; + table->AlphaSize = sz; + table->IntensitySize = 0; + table->LuminanceSize = 0; + break; + default: + _mesa_problem(NULL, "unexpected format in set_component_sizes"); + } +} + + + +/** + * Update/replace all or part of a color table. Helper function + * used by _mesa_ColorTable() and _mesa_ColorSubTable(). + * The table->Table buffer should already be allocated. + * \param start first entry to update + * \param count number of entries to update + * \param format format of user-provided table data + * \param type datatype of user-provided table data + * \param data user-provided table data + * \param [rgba]Scale - RGBA scale factors + * \param [rgba]Bias - RGBA bias factors + */ +static void +store_colortable_entries(struct gl_context *ctx, struct gl_color_table *table, + GLsizei start, GLsizei count, + GLenum format, GLenum type, const GLvoid *data, + GLfloat rScale, GLfloat rBias, + GLfloat gScale, GLfloat gBias, + GLfloat bScale, GLfloat bBias, + GLfloat aScale, GLfloat aBias) +{ + data = _mesa_map_validate_pbo_source(ctx, + 1, &ctx->Unpack, count, 1, 1, + format, type, data, + "glColor[Sub]Table"); + if (!data) + return; + + { + /* convert user-provided data to GLfloat values */ + GLfloat tempTab[MAX_COLOR_TABLE_SIZE * 4]; + GLfloat *tableF; + GLint i; + + _mesa_unpack_color_span_float(ctx, + count, /* number of pixels */ + table->_BaseFormat, /* dest format */ + tempTab, /* dest address */ + format, type, /* src format/type */ + data, /* src data */ + &ctx->Unpack, + IMAGE_CLAMP_BIT); /* transfer ops */ + + /* the destination */ + tableF = table->TableF; + + /* Apply scale & bias & clamp now */ + switch (table->_BaseFormat) { + case GL_INTENSITY: + for (i = 0; i < count; i++) { + GLuint j = start + i; + tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F); + } + break; + case GL_LUMINANCE: + for (i = 0; i < count; i++) { + GLuint j = start + i; + tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F); + } + break; + case GL_ALPHA: + for (i = 0; i < count; i++) { + GLuint j = start + i; + tableF[j] = CLAMP(tempTab[i] * aScale + aBias, 0.0F, 1.0F); + } + break; + case GL_LUMINANCE_ALPHA: + for (i = 0; i < count; i++) { + GLuint j = start + i; + tableF[j*2+0] = CLAMP(tempTab[i*2+0] * rScale + rBias, 0.0F, 1.0F); + tableF[j*2+1] = CLAMP(tempTab[i*2+1] * aScale + aBias, 0.0F, 1.0F); + } + break; + case GL_RGB: + for (i = 0; i < count; i++) { + GLuint j = start + i; + tableF[j*3+0] = CLAMP(tempTab[i*3+0] * rScale + rBias, 0.0F, 1.0F); + tableF[j*3+1] = CLAMP(tempTab[i*3+1] * gScale + gBias, 0.0F, 1.0F); + tableF[j*3+2] = CLAMP(tempTab[i*3+2] * bScale + bBias, 0.0F, 1.0F); + } + break; + case GL_RGBA: + for (i = 0; i < count; i++) { + GLuint j = start + i; + tableF[j*4+0] = CLAMP(tempTab[i*4+0] * rScale + rBias, 0.0F, 1.0F); + tableF[j*4+1] = CLAMP(tempTab[i*4+1] * gScale + gBias, 0.0F, 1.0F); + tableF[j*4+2] = CLAMP(tempTab[i*4+2] * bScale + bBias, 0.0F, 1.0F); + tableF[j*4+3] = CLAMP(tempTab[i*4+3] * aScale + aBias, 0.0F, 1.0F); + } + break; + default: + _mesa_problem(ctx, "Bad format in store_colortable_entries"); + return; + } + } + + /* update the ubyte table */ + { + const GLint comps = _mesa_components_in_format(table->_BaseFormat); + const GLfloat *tableF = table->TableF + start * comps; + GLubyte *tableUB = table->TableUB + start * comps; + GLint i; + for (i = 0; i < count * comps; i++) { + CLAMPED_FLOAT_TO_UBYTE(tableUB[i], tableF[i]); + } + } + + _mesa_unmap_pbo_source(ctx, &ctx->Unpack); +} + + + +void GLAPIENTRY +_mesa_ColorTable( GLenum target, GLenum internalFormat, + GLsizei width, GLenum format, GLenum type, + const GLvoid *data ) +{ + static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 }; + static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 }; + GET_CURRENT_CONTEXT(ctx); + struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx); + struct gl_texture_object *texObj = NULL; + struct gl_color_table *table = NULL; + GLboolean proxy = GL_FALSE; + GLint baseFormat; + const GLfloat *scale = one, *bias = zero; + GLint comps; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */ + + switch (target) { + case GL_SHARED_TEXTURE_PALETTE_EXT: + table = &ctx->Texture.Palette; + break; + default: + /* try texture targets */ + { + struct gl_texture_object *texobj + = _mesa_select_tex_object(ctx, texUnit, target); + if (texobj) { + table = &texobj->Palette; + proxy = _mesa_is_proxy_texture(target); + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)"); + return; + } + } + } + + assert(table); + + if (!_mesa_is_legal_format_and_type(ctx, format, type) || + format == GL_INTENSITY) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)"); + return; + } + + baseFormat = base_colortab_format(internalFormat); + if (baseFormat < 0) { + _mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)"); + return; + } + + if (width < 0 || (width != 0 && !_mesa_is_pow_two(width))) { + /* error */ + if (proxy) { + table->Size = 0; + table->InternalFormat = (GLenum) 0; + table->_BaseFormat = (GLenum) 0; + } + else { + _mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width); + } + return; + } + + if (width > (GLsizei) ctx->Const.MaxColorTableSize) { + if (proxy) { + table->Size = 0; + table->InternalFormat = (GLenum) 0; + table->_BaseFormat = (GLenum) 0; + } + else { + _mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)"); + } + return; + } + + table->Size = width; + table->InternalFormat = internalFormat; + table->_BaseFormat = (GLenum) baseFormat; + + comps = _mesa_components_in_format(table->_BaseFormat); + assert(comps > 0); /* error should have been caught sooner */ + + if (!proxy) { + _mesa_free_colortable_data(table); + + if (width > 0) { + table->TableF = (GLfloat *) malloc(comps * width * sizeof(GLfloat)); + table->TableUB = (GLubyte *) malloc(comps * width * sizeof(GLubyte)); + + if (!table->TableF || !table->TableUB) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable"); + return; + } + + store_colortable_entries(ctx, table, + 0, width, /* start, count */ + format, type, data, + scale[0], bias[0], + scale[1], bias[1], + scale[2], bias[2], + scale[3], bias[3]); + } + } /* proxy */ + + /* do this after the table's Type and Format are set */ + set_component_sizes(table); + + if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) { + /* texture object palette, texObj==NULL means the shared palette */ + if (ctx->Driver.UpdateTexturePalette) { + (*ctx->Driver.UpdateTexturePalette)( ctx, texObj ); + } + } + + ctx->NewState |= _NEW_PIXEL; +} + + + +void GLAPIENTRY +_mesa_ColorSubTable( GLenum target, GLsizei start, + GLsizei count, GLenum format, GLenum type, + const GLvoid *data ) +{ + static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 }; + static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 }; + GET_CURRENT_CONTEXT(ctx); + struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx); + struct gl_texture_object *texObj = NULL; + struct gl_color_table *table = NULL; + const GLfloat *scale = one, *bias = zero; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + switch (target) { + case GL_SHARED_TEXTURE_PALETTE_EXT: + table = &ctx->Texture.Palette; + break; + default: + /* try texture targets */ + texObj = _mesa_select_tex_object(ctx, texUnit, target); + if (texObj && !_mesa_is_proxy_texture(target)) { + table = &texObj->Palette; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)"); + return; + } + } + + assert(table); + + if (!_mesa_is_legal_format_and_type(ctx, format, type) || + format == GL_INTENSITY) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glColorSubTable(format or type)"); + return; + } + + if (count < 1) { + _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)"); + return; + } + + /* error should have been caught sooner */ + assert(_mesa_components_in_format(table->_BaseFormat) > 0); + + if (start + count > (GLint) table->Size) { + _mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)"); + return; + } + + if (!table->TableF || !table->TableUB) { + /* a GL_OUT_OF_MEMORY error would have been recorded previously */ + return; + } + + store_colortable_entries(ctx, table, start, count, + format, type, data, + scale[0], bias[0], + scale[1], bias[1], + scale[2], bias[2], + scale[3], bias[3]); + + if (texObj || target == GL_SHARED_TEXTURE_PALETTE_EXT) { + /* per-texture object palette */ + if (ctx->Driver.UpdateTexturePalette) { + (*ctx->Driver.UpdateTexturePalette)( ctx, texObj ); + } + } + + ctx->NewState |= _NEW_PIXEL; +} + + + +static void GLAPIENTRY +_mesa_CopyColorTable(GLenum target, GLenum internalformat, + GLint x, GLint y, GLsizei width) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (!ctx->ReadBuffer->_ColorReadBuffer) { + return; /* no readbuffer - OK */ + } + + ctx->Driver.CopyColorTable( ctx, target, internalformat, x, y, width ); +} + + + +static void GLAPIENTRY +_mesa_CopyColorSubTable(GLenum target, GLsizei start, + GLint x, GLint y, GLsizei width) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (!ctx->ReadBuffer->_ColorReadBuffer) { + return; /* no readbuffer - OK */ + } + + ctx->Driver.CopyColorSubTable( ctx, target, start, x, y, width ); +} + + + +static void GLAPIENTRY +_mesa_GetColorTable( GLenum target, GLenum format, + GLenum type, GLvoid *data ) +{ + GET_CURRENT_CONTEXT(ctx); + struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx); + struct gl_color_table *table = NULL; + GLfloat rgba[MAX_COLOR_TABLE_SIZE][4]; + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (ctx->NewState) { + _mesa_update_state(ctx); + } + + switch (target) { + case GL_SHARED_TEXTURE_PALETTE_EXT: + table = &ctx->Texture.Palette; + break; + default: + /* try texture targets */ + { + struct gl_texture_object *texobj + = _mesa_select_tex_object(ctx, texUnit, target); + if (texobj && !_mesa_is_proxy_texture(target)) { + table = &texobj->Palette; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)"); + return; + } + } + } + + ASSERT(table); + + if (table->Size <= 0) { + return; + } + + switch (table->_BaseFormat) { + case GL_ALPHA: + { + GLuint i; + for (i = 0; i < table->Size; i++) { + rgba[i][RCOMP] = 0; + rgba[i][GCOMP] = 0; + rgba[i][BCOMP] = 0; + rgba[i][ACOMP] = table->TableF[i]; + } + } + break; + case GL_LUMINANCE: + { + GLuint i; + for (i = 0; i < table->Size; i++) { + rgba[i][RCOMP] = + rgba[i][GCOMP] = + rgba[i][BCOMP] = table->TableF[i]; + rgba[i][ACOMP] = 1.0F; + } + } + break; + case GL_LUMINANCE_ALPHA: + { + GLuint i; + for (i = 0; i < table->Size; i++) { + rgba[i][RCOMP] = + rgba[i][GCOMP] = + rgba[i][BCOMP] = table->TableF[i*2+0]; + rgba[i][ACOMP] = table->TableF[i*2+1]; + } + } + break; + case GL_INTENSITY: + { + GLuint i; + for (i = 0; i < table->Size; i++) { + rgba[i][RCOMP] = + rgba[i][GCOMP] = + rgba[i][BCOMP] = + rgba[i][ACOMP] = table->TableF[i]; + } + } + break; + case GL_RGB: + { + GLuint i; + for (i = 0; i < table->Size; i++) { + rgba[i][RCOMP] = table->TableF[i*3+0]; + rgba[i][GCOMP] = table->TableF[i*3+1]; + rgba[i][BCOMP] = table->TableF[i*3+2]; + rgba[i][ACOMP] = 1.0F; + } + } + break; + case GL_RGBA: + memcpy(rgba, table->TableF, 4 * table->Size * sizeof(GLfloat)); + break; + default: + _mesa_problem(ctx, "bad table format in glGetColorTable"); + return; + } + + data = _mesa_map_validate_pbo_dest(ctx, + 1, &ctx->Pack, table->Size, 1, 1, + format, type, data, + "glGetColorTable"); + if (!data) + return; + + _mesa_pack_rgba_span_float(ctx, table->Size, rgba, + format, type, data, &ctx->Pack, 0x0); + + _mesa_unmap_pbo_dest(ctx, &ctx->Pack); +} + + + +static void GLAPIENTRY +_mesa_ColorTableParameterfv(GLenum target, GLenum pname, const GLfloat *params) +{ + /* no extensions use this function */ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(target)"); +} + + + +static void GLAPIENTRY +_mesa_ColorTableParameteriv(GLenum target, GLenum pname, const GLint *params) +{ + /* no extensions use this function */ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + _mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameteriv(target)"); +} + + + +static void GLAPIENTRY +_mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params ) +{ + GET_CURRENT_CONTEXT(ctx); + struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx); + struct gl_color_table *table = NULL; + ASSERT_OUTSIDE_BEGIN_END(ctx); + + switch (target) { + case GL_SHARED_TEXTURE_PALETTE_EXT: + table = &ctx->Texture.Palette; + break; + default: + /* try texture targets */ + { + struct gl_texture_object *texobj + = _mesa_select_tex_object(ctx, texUnit, target); + if (texobj) { + table = &texobj->Palette; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetColorTableParameterfv(target)"); + return; + } + } + } + + assert(table); + + switch (pname) { + case GL_COLOR_TABLE_FORMAT: + *params = (GLfloat) table->InternalFormat; + break; + case GL_COLOR_TABLE_WIDTH: + *params = (GLfloat) table->Size; + break; + case GL_COLOR_TABLE_RED_SIZE: + *params = (GLfloat) table->RedSize; + break; + case GL_COLOR_TABLE_GREEN_SIZE: + *params = (GLfloat) table->GreenSize; + break; + case GL_COLOR_TABLE_BLUE_SIZE: + *params = (GLfloat) table->BlueSize; + break; + case GL_COLOR_TABLE_ALPHA_SIZE: + *params = (GLfloat) table->AlphaSize; + break; + case GL_COLOR_TABLE_LUMINANCE_SIZE: + *params = (GLfloat) table->LuminanceSize; + break; + case GL_COLOR_TABLE_INTENSITY_SIZE: + *params = (GLfloat) table->IntensitySize; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameterfv(pname)" ); + return; + } +} + + + +static void GLAPIENTRY +_mesa_GetColorTableParameteriv( GLenum target, GLenum pname, GLint *params ) +{ + GET_CURRENT_CONTEXT(ctx); + struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx); + struct gl_color_table *table = NULL; + ASSERT_OUTSIDE_BEGIN_END(ctx); + + switch (target) { + case GL_SHARED_TEXTURE_PALETTE_EXT: + table = &ctx->Texture.Palette; + break; + default: + /* Try texture targets */ + { + struct gl_texture_object *texobj + = _mesa_select_tex_object(ctx, texUnit, target); + if (texobj) { + table = &texobj->Palette; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetColorTableParameteriv(target)"); + return; + } + } + } + + assert(table); + + switch (pname) { + case GL_COLOR_TABLE_FORMAT: + *params = table->InternalFormat; + break; + case GL_COLOR_TABLE_WIDTH: + *params = table->Size; + break; + case GL_COLOR_TABLE_RED_SIZE: + *params = table->RedSize; + break; + case GL_COLOR_TABLE_GREEN_SIZE: + *params = table->GreenSize; + break; + case GL_COLOR_TABLE_BLUE_SIZE: + *params = table->BlueSize; + break; + case GL_COLOR_TABLE_ALPHA_SIZE: + *params = table->AlphaSize; + break; + case GL_COLOR_TABLE_LUMINANCE_SIZE: + *params = table->LuminanceSize; + break; + case GL_COLOR_TABLE_INTENSITY_SIZE: + *params = table->IntensitySize; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameteriv(pname)" ); + return; + } +} + + +void +_mesa_init_colortable_dispatch(struct _glapi_table *disp) +{ + SET_ColorSubTable(disp, _mesa_ColorSubTable); + SET_ColorTable(disp, _mesa_ColorTable); + SET_ColorTableParameterfv(disp, _mesa_ColorTableParameterfv); + SET_ColorTableParameteriv(disp, _mesa_ColorTableParameteriv); + SET_CopyColorSubTable(disp, _mesa_CopyColorSubTable); + SET_CopyColorTable(disp, _mesa_CopyColorTable); + SET_GetColorTable(disp, _mesa_GetColorTable); + SET_GetColorTableParameterfv(disp, _mesa_GetColorTableParameterfv); + SET_GetColorTableParameteriv(disp, _mesa_GetColorTableParameteriv); +} + + +#endif /* FEATURE_colortable */ + + +/**********************************************************************/ +/***** Initialization *****/ +/**********************************************************************/ + + +void +_mesa_init_colortable( struct gl_color_table *p ) +{ + p->TableF = NULL; + p->TableUB = NULL; + p->Size = 0; + p->InternalFormat = GL_RGBA; +} + + + +void +_mesa_free_colortable_data( struct gl_color_table *p ) +{ + if (p->TableF) { + free(p->TableF); + p->TableF = NULL; + } + if (p->TableUB) { + free(p->TableUB); + p->TableUB = NULL; + } +} |