WebSVN – Kolibri OS – Blame – /programs/develop/libraries/Mesa/src/mesa/main/colortab.c

Rev	Author	Line No.	Line
1901	serge	1	/*
		2	* Mesa 3-D graphics library
		3	* Version: 7.1
		4	*
		5	* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
		6	*
		7	* Permission is hereby granted, free of charge, to any person obtaining a
		8	* copy of this software and associated documentation files (the "Software"),
		9	* to deal in the Software without restriction, including without limitation
		10	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
		11	* and/or sell copies of the Software, and to permit persons to whom the
		12	* Software is furnished to do so, subject to the following conditions:
		13	*
		14	* The above copyright notice and this permission notice shall be included
		15	* in all copies or substantial portions of the Software.
		16	*
		17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
		18	* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
		19	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
		20	* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
		21	* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
		22	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
		23	*/
		24
		25
		26	#include "glheader.h"
		27	#include "bufferobj.h"
		28	#include "colortab.h"
		29	#include "context.h"
		30	#include "image.h"
		31	#include "macros.h"
		32	#include "pack.h"
		33	#include "state.h"
		34	#include "teximage.h"
		35	#include "texstate.h"
		36	#include "main/dispatch.h"
		37
		38
		39	#if FEATURE_colortable
		40
		41
		42	/**
		43	* Given an internalFormat token passed to glColorTable,
		44	* return the corresponding base format.
		45	* Return -1 if invalid token.
		46	*/
		47	static GLint
		48	base_colortab_format( GLenum format )
		49	{
		50	switch (format) {
		51	case GL_ALPHA:
		52	case GL_ALPHA4:
		53	case GL_ALPHA8:
		54	case GL_ALPHA12:
		55	case GL_ALPHA16:
		56	return GL_ALPHA;
		57	case GL_LUMINANCE:
		58	case GL_LUMINANCE4:
		59	case GL_LUMINANCE8:
		60	case GL_LUMINANCE12:
		61	case GL_LUMINANCE16:
		62	return GL_LUMINANCE;
		63	case GL_LUMINANCE_ALPHA:
		64	case GL_LUMINANCE4_ALPHA4:
		65	case GL_LUMINANCE6_ALPHA2:
		66	case GL_LUMINANCE8_ALPHA8:
		67	case GL_LUMINANCE12_ALPHA4:
		68	case GL_LUMINANCE12_ALPHA12:
		69	case GL_LUMINANCE16_ALPHA16:
		70	return GL_LUMINANCE_ALPHA;
		71	case GL_INTENSITY:
		72	case GL_INTENSITY4:
		73	case GL_INTENSITY8:
		74	case GL_INTENSITY12:
		75	case GL_INTENSITY16:
		76	return GL_INTENSITY;
		77	case GL_RGB:
		78	case GL_R3_G3_B2:
		79	case GL_RGB4:
		80	case GL_RGB5:
		81	case GL_RGB8:
		82	case GL_RGB10:
		83	case GL_RGB12:
		84	case GL_RGB16:
		85	return GL_RGB;
		86	case GL_RGBA:
		87	case GL_RGBA2:
		88	case GL_RGBA4:
		89	case GL_RGB5_A1:
		90	case GL_RGBA8:
		91	case GL_RGB10_A2:
		92	case GL_RGBA12:
		93	case GL_RGBA16:
		94	return GL_RGBA;
		95	default:
		96	return -1; /* error */
		97	}
		98	}
		99
		100
		101
		102	/**
		103	* Examine table's format and set the component sizes accordingly.
		104	*/
		105	static void
		106	set_component_sizes( struct gl_color_table *table )
		107	{
		108	/* assuming the ubyte table */
		109	const GLubyte sz = 8;
		110
		111	switch (table->_BaseFormat) {
		112	case GL_ALPHA:
		113	table->RedSize = 0;
		114	table->GreenSize = 0;
		115	table->BlueSize = 0;
		116	table->AlphaSize = sz;
		117	table->IntensitySize = 0;
		118	table->LuminanceSize = 0;
		119	break;
		120	case GL_LUMINANCE:
		121	table->RedSize = 0;
		122	table->GreenSize = 0;
		123	table->BlueSize = 0;
		124	table->AlphaSize = 0;
		125	table->IntensitySize = 0;
		126	table->LuminanceSize = sz;
		127	break;
		128	case GL_LUMINANCE_ALPHA:
		129	table->RedSize = 0;
		130	table->GreenSize = 0;
		131	table->BlueSize = 0;
		132	table->AlphaSize = sz;
		133	table->IntensitySize = 0;
		134	table->LuminanceSize = sz;
		135	break;
		136	case GL_INTENSITY:
		137	table->RedSize = 0;
		138	table->GreenSize = 0;
		139	table->BlueSize = 0;
		140	table->AlphaSize = 0;
		141	table->IntensitySize = sz;
		142	table->LuminanceSize = 0;
		143	break;
		144	case GL_RGB:
		145	table->RedSize = sz;
		146	table->GreenSize = sz;
		147	table->BlueSize = sz;
		148	table->AlphaSize = 0;
		149	table->IntensitySize = 0;
		150	table->LuminanceSize = 0;
		151	break;
		152	case GL_RGBA:
		153	table->RedSize = sz;
		154	table->GreenSize = sz;
		155	table->BlueSize = sz;
		156	table->AlphaSize = sz;
		157	table->IntensitySize = 0;
		158	table->LuminanceSize = 0;
		159	break;
		160	default:
		161	_mesa_problem(NULL, "unexpected format in set_component_sizes");
		162	}
		163	}
		164
		165
		166
		167	/**
		168	* Update/replace all or part of a color table. Helper function
		169	* used by _mesa_ColorTable() and _mesa_ColorSubTable().
		170	* The table->Table buffer should already be allocated.
		171	* \param start first entry to update
		172	* \param count number of entries to update
		173	* \param format format of user-provided table data
		174	* \param type datatype of user-provided table data
		175	* \param data user-provided table data
		176	* \param [rgba]Scale - RGBA scale factors
		177	* \param [rgba]Bias - RGBA bias factors
		178	*/
		179	static void
		180	store_colortable_entries(struct gl_context ctx, struct gl_color_table table,
		181	GLsizei start, GLsizei count,
		182	GLenum format, GLenum type, const GLvoid *data,
		183	GLfloat rScale, GLfloat rBias,
		184	GLfloat gScale, GLfloat gBias,
		185	GLfloat bScale, GLfloat bBias,
		186	GLfloat aScale, GLfloat aBias)
		187	{
		188	data = _mesa_map_validate_pbo_source(ctx,
		189	1, &ctx->Unpack, count, 1, 1,
		190	format, type, data,
		191	"glColor[Sub]Table");
		192	if (!data)
		193	return;
		194
		195	{
		196	/* convert user-provided data to GLfloat values */
		197	GLfloat tempTab[MAX_COLOR_TABLE_SIZE * 4];
		198	GLfloat *tableF;
		199	GLint i;
		200
		201	_mesa_unpack_color_span_float(ctx,
		202	count, /* number of pixels */
		203	table->_BaseFormat, /* dest format */
		204	tempTab, /* dest address */
		205	format, type, /* src format/type */
		206	data, /* src data */
		207	&ctx->Unpack,
		208	IMAGE_CLAMP_BIT); /* transfer ops */
		209
		210	/* the destination */
		211	tableF = table->TableF;
		212
		213	/* Apply scale & bias & clamp now */
		214	switch (table->_BaseFormat) {
		215	case GL_INTENSITY:
		216	for (i = 0; i < count; i++) {
		217	GLuint j = start + i;
		218	tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
		219	}
		220	break;
		221	case GL_LUMINANCE:
		222	for (i = 0; i < count; i++) {
		223	GLuint j = start + i;
		224	tableF[j] = CLAMP(tempTab[i] * rScale + rBias, 0.0F, 1.0F);
		225	}
		226	break;
		227	case GL_ALPHA:
		228	for (i = 0; i < count; i++) {
		229	GLuint j = start + i;
		230	tableF[j] = CLAMP(tempTab[i] * aScale + aBias, 0.0F, 1.0F);
		231	}
		232	break;
		233	case GL_LUMINANCE_ALPHA:
		234	for (i = 0; i < count; i++) {
		235	GLuint j = start + i;
		236	tableF[j2+0] = CLAMP(tempTab[i2+0] * rScale + rBias, 0.0F, 1.0F);
		237	tableF[j2+1] = CLAMP(tempTab[i2+1] * aScale + aBias, 0.0F, 1.0F);
		238	}
		239	break;
		240	case GL_RGB:
		241	for (i = 0; i < count; i++) {
		242	GLuint j = start + i;
		243	tableF[j3+0] = CLAMP(tempTab[i3+0] * rScale + rBias, 0.0F, 1.0F);
		244	tableF[j3+1] = CLAMP(tempTab[i3+1] * gScale + gBias, 0.0F, 1.0F);
		245	tableF[j3+2] = CLAMP(tempTab[i3+2] * bScale + bBias, 0.0F, 1.0F);
		246	}
		247	break;
		248	case GL_RGBA:
		249	for (i = 0; i < count; i++) {
		250	GLuint j = start + i;
		251	tableF[j4+0] = CLAMP(tempTab[i4+0] * rScale + rBias, 0.0F, 1.0F);
		252	tableF[j4+1] = CLAMP(tempTab[i4+1] * gScale + gBias, 0.0F, 1.0F);
		253	tableF[j4+2] = CLAMP(tempTab[i4+2] * bScale + bBias, 0.0F, 1.0F);
		254	tableF[j4+3] = CLAMP(tempTab[i4+3] * aScale + aBias, 0.0F, 1.0F);
		255	}
		256	break;
		257	default:
		258	_mesa_problem(ctx, "Bad format in store_colortable_entries");
		259	return;
		260	}
		261	}
		262
		263	/* update the ubyte table */
		264	{
		265	const GLint comps = _mesa_components_in_format(table->_BaseFormat);
		266	const GLfloat tableF = table->TableF + start comps;
		267	GLubyte tableUB = table->TableUB + start comps;
		268	GLint i;
		269	for (i = 0; i < count * comps; i++) {
		270	CLAMPED_FLOAT_TO_UBYTE(tableUB[i], tableF[i]);
		271	}
		272	}
		273
		274	_mesa_unmap_pbo_source(ctx, &ctx->Unpack);
		275	}
		276
		277
		278
		279	void GLAPIENTRY
		280	_mesa_ColorTable( GLenum target, GLenum internalFormat,
		281	GLsizei width, GLenum format, GLenum type,
		282	const GLvoid *data )
		283	{
		284	static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
		285	static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
		286	GET_CURRENT_CONTEXT(ctx);
		287	struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
		288	struct gl_texture_object *texObj = NULL;
		289	struct gl_color_table *table = NULL;
		290	GLboolean proxy = GL_FALSE;
		291	GLint baseFormat;
		292	const GLfloat scale = one, bias = zero;
		293	GLint comps;
		294
		295	ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */
		296
		297	switch (target) {
		298	case GL_SHARED_TEXTURE_PALETTE_EXT:
		299	table = &ctx->Texture.Palette;
		300	break;
		301	case GL_TEXTURE_COLOR_TABLE_SGI:
		302	if (!ctx->Extensions.SGI_texture_color_table) {
		303	_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
		304	return;
		305	}
		306	table = &(texUnit->ColorTable);
		307	scale = ctx->Pixel.TextureColorTableScale;
		308	bias = ctx->Pixel.TextureColorTableBias;
		309	break;
		310	case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
		311	if (!ctx->Extensions.SGI_texture_color_table) {
		312	_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
		313	return;
		314	}
		315	table = &(texUnit->ProxyColorTable);
		316	proxy = GL_TRUE;
		317	break;
		318	default:
		319	/* try texture targets */
		320	{
		321	struct gl_texture_object *texobj
		322	= _mesa_select_tex_object(ctx, texUnit, target);
		323	if (texobj) {
		324	table = &texobj->Palette;
		325	proxy = _mesa_is_proxy_texture(target);
		326	}
		327	else {
		328	_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(target)");
		329	return;
		330	}
		331	}
		332	}
		333
		334	assert(table);
		335
		336	if (!_mesa_is_legal_format_and_type(ctx, format, type) \|\|
		337	format == GL_INTENSITY) {
		338	_mesa_error(ctx, GL_INVALID_OPERATION, "glColorTable(format or type)");
		339	return;
		340	}
		341
		342	baseFormat = base_colortab_format(internalFormat);
		343	if (baseFormat < 0) {
		344	_mesa_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
		345	return;
		346	}
		347
		348	if (width < 0 \|\| (width != 0 && !_mesa_is_pow_two(width))) {
		349	/* error */
		350	if (proxy) {
		351	table->Size = 0;
		352	table->InternalFormat = (GLenum) 0;
		353	table->_BaseFormat = (GLenum) 0;
		354	}
		355	else {
		356	_mesa_error(ctx, GL_INVALID_VALUE, "glColorTable(width=%d)", width);
		357	}
		358	return;
		359	}
		360
		361	if (width > (GLsizei) ctx->Const.MaxColorTableSize) {
		362	if (proxy) {
		363	table->Size = 0;
		364	table->InternalFormat = (GLenum) 0;
		365	table->_BaseFormat = (GLenum) 0;
		366	}
		367	else {
		368	_mesa_error(ctx, GL_TABLE_TOO_LARGE, "glColorTable(width)");
		369	}
		370	return;
		371	}
		372
		373	table->Size = width;
		374	table->InternalFormat = internalFormat;
		375	table->_BaseFormat = (GLenum) baseFormat;
		376
		377	comps = _mesa_components_in_format(table->_BaseFormat);
		378	assert(comps > 0); /* error should have been caught sooner */
		379
		380	if (!proxy) {
		381	_mesa_free_colortable_data(table);
		382
		383	if (width > 0) {
		384	table->TableF = (GLfloat ) malloc(comps width * sizeof(GLfloat));
		385	table->TableUB = (GLubyte ) malloc(comps width * sizeof(GLubyte));
		386
		387	if (!table->TableF \|\| !table->TableUB) {
		388	_mesa_error(ctx, GL_OUT_OF_MEMORY, "glColorTable");
		389	return;
		390	}
		391
		392	store_colortable_entries(ctx, table,
		393	0, width, /* start, count */
		394	format, type, data,
		395	scale[0], bias[0],
		396	scale[1], bias[1],
		397	scale[2], bias[2],
		398	scale[3], bias[3]);
		399	}
		400	} /* proxy */
		401
		402	/* do this after the table's Type and Format are set */
		403	set_component_sizes(table);
		404
		405	if (texObj \|\| target == GL_SHARED_TEXTURE_PALETTE_EXT) {
		406	/* texture object palette, texObj==NULL means the shared palette */
		407	if (ctx->Driver.UpdateTexturePalette) {
		408	(*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
		409	}
		410	}
		411
		412	ctx->NewState \|= _NEW_PIXEL;
		413	}
		414
		415
		416
		417	void GLAPIENTRY
		418	_mesa_ColorSubTable( GLenum target, GLsizei start,
		419	GLsizei count, GLenum format, GLenum type,
		420	const GLvoid *data )
		421	{
		422	static const GLfloat one[4] = { 1.0, 1.0, 1.0, 1.0 };
		423	static const GLfloat zero[4] = { 0.0, 0.0, 0.0, 0.0 };
		424	GET_CURRENT_CONTEXT(ctx);
		425	struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
		426	struct gl_texture_object *texObj = NULL;
		427	struct gl_color_table *table = NULL;
		428	const GLfloat scale = one, bias = zero;
		429
		430	ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
		431
		432	switch (target) {
		433	case GL_SHARED_TEXTURE_PALETTE_EXT:
		434	table = &ctx->Texture.Palette;
		435	break;
		436	case GL_TEXTURE_COLOR_TABLE_SGI:
		437	if (!ctx->Extensions.SGI_texture_color_table) {
		438	_mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
		439	return;
		440	}
		441	table = &(texUnit->ColorTable);
		442	scale = ctx->Pixel.TextureColorTableScale;
		443	bias = ctx->Pixel.TextureColorTableBias;
		444	break;
		445	default:
		446	/* try texture targets */
		447	texObj = _mesa_select_tex_object(ctx, texUnit, target);
		448	if (texObj && !_mesa_is_proxy_texture(target)) {
		449	table = &texObj->Palette;
		450	}
		451	else {
		452	_mesa_error(ctx, GL_INVALID_ENUM, "glColorSubTable(target)");
		453	return;
		454	}
		455	}
		456
		457	assert(table);
		458
		459	if (!_mesa_is_legal_format_and_type(ctx, format, type) \|\|
		460	format == GL_INTENSITY) {
		461	_mesa_error(ctx, GL_INVALID_OPERATION, "glColorSubTable(format or type)");
		462	return;
		463	}
		464
		465	if (count < 1) {
		466	_mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
		467	return;
		468	}
		469
		470	/* error should have been caught sooner */
		471	assert(_mesa_components_in_format(table->_BaseFormat) > 0);
		472
		473	if (start + count > (GLint) table->Size) {
		474	_mesa_error(ctx, GL_INVALID_VALUE, "glColorSubTable(count)");
		475	return;
		476	}
		477
		478	if (!table->TableF \|\| !table->TableUB) {
		479	/* a GL_OUT_OF_MEMORY error would have been recorded previously */
		480	return;
		481	}
		482
		483	store_colortable_entries(ctx, table, start, count,
		484	format, type, data,
		485	scale[0], bias[0],
		486	scale[1], bias[1],
		487	scale[2], bias[2],
		488	scale[3], bias[3]);
		489
		490	if (texObj \|\| target == GL_SHARED_TEXTURE_PALETTE_EXT) {
		491	/* per-texture object palette */
		492	if (ctx->Driver.UpdateTexturePalette) {
		493	(*ctx->Driver.UpdateTexturePalette)( ctx, texObj );
		494	}
		495	}
		496
		497	ctx->NewState \|= _NEW_PIXEL;
		498	}
		499
		500
		501
		502	static void GLAPIENTRY
		503	_mesa_CopyColorTable(GLenum target, GLenum internalformat,
		504	GLint x, GLint y, GLsizei width)
		505	{
		506	GET_CURRENT_CONTEXT(ctx);
		507	ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
		508
		509	if (!ctx->ReadBuffer->_ColorReadBuffer) {
		510	return; /* no readbuffer - OK */
		511	}
		512
		513	ctx->Driver.CopyColorTable( ctx, target, internalformat, x, y, width );
		514	}
		515
		516
		517
		518	static void GLAPIENTRY
		519	_mesa_CopyColorSubTable(GLenum target, GLsizei start,
		520	GLint x, GLint y, GLsizei width)
		521	{
		522	GET_CURRENT_CONTEXT(ctx);
		523	ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
		524
		525	if (!ctx->ReadBuffer->_ColorReadBuffer) {
		526	return; /* no readbuffer - OK */
		527	}
		528
		529	ctx->Driver.CopyColorSubTable( ctx, target, start, x, y, width );
		530	}
		531
		532
		533
		534	static void GLAPIENTRY
		535	_mesa_GetColorTable( GLenum target, GLenum format,
		536	GLenum type, GLvoid *data )
		537	{
		538	GET_CURRENT_CONTEXT(ctx);
		539	struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
		540	struct gl_color_table *table = NULL;
		541	GLfloat rgba[MAX_COLOR_TABLE_SIZE][4];
		542	ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
		543
		544	if (ctx->NewState) {
		545	_mesa_update_state(ctx);
		546	}
		547
		548	switch (target) {
		549	case GL_SHARED_TEXTURE_PALETTE_EXT:
		550	table = &ctx->Texture.Palette;
		551	break;
		552	case GL_TEXTURE_COLOR_TABLE_SGI:
		553	if (!ctx->Extensions.SGI_texture_color_table) {
		554	_mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
		555	return;
		556	}
		557	table = &(texUnit->ColorTable);
		558	break;
		559	default:
		560	/* try texture targets */
		561	{
		562	struct gl_texture_object *texobj
		563	= _mesa_select_tex_object(ctx, texUnit, target);
		564	if (texobj && !_mesa_is_proxy_texture(target)) {
		565	table = &texobj->Palette;
		566	}
		567	else {
		568	_mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTable(target)");
		569	return;
		570	}
		571	}
		572	}
		573
		574	ASSERT(table);
		575
		576	if (table->Size <= 0) {
		577	return;
		578	}
		579
		580	switch (table->_BaseFormat) {
		581	case GL_ALPHA:
		582	{
		583	GLuint i;
		584	for (i = 0; i < table->Size; i++) {
		585	rgba[i][RCOMP] = 0;
		586	rgba[i][GCOMP] = 0;
		587	rgba[i][BCOMP] = 0;
		588	rgba[i][ACOMP] = table->TableF[i];
		589	}
		590	}
		591	break;
		592	case GL_LUMINANCE:
		593	{
		594	GLuint i;
		595	for (i = 0; i < table->Size; i++) {
		596	rgba[i][RCOMP] =
		597	rgba[i][GCOMP] =
		598	rgba[i][BCOMP] = table->TableF[i];
		599	rgba[i][ACOMP] = 1.0F;
		600	}
		601	}
		602	break;
		603	case GL_LUMINANCE_ALPHA:
		604	{
		605	GLuint i;
		606	for (i = 0; i < table->Size; i++) {
		607	rgba[i][RCOMP] =
		608	rgba[i][GCOMP] =
		609	rgba[i][BCOMP] = table->TableF[i*2+0];
		610	rgba[i][ACOMP] = table->TableF[i*2+1];
		611	}
		612	}
		613	break;
		614	case GL_INTENSITY:
		615	{
		616	GLuint i;
		617	for (i = 0; i < table->Size; i++) {
		618	rgba[i][RCOMP] =
		619	rgba[i][GCOMP] =
		620	rgba[i][BCOMP] =
		621	rgba[i][ACOMP] = table->TableF[i];
		622	}
		623	}
		624	break;
		625	case GL_RGB:
		626	{
		627	GLuint i;
		628	for (i = 0; i < table->Size; i++) {
		629	rgba[i][RCOMP] = table->TableF[i*3+0];
		630	rgba[i][GCOMP] = table->TableF[i*3+1];
		631	rgba[i][BCOMP] = table->TableF[i*3+2];
		632	rgba[i][ACOMP] = 1.0F;
		633	}
		634	}
		635	break;
		636	case GL_RGBA:
		637	memcpy(rgba, table->TableF, 4 * table->Size * sizeof(GLfloat));
		638	break;
		639	default:
		640	_mesa_problem(ctx, "bad table format in glGetColorTable");
		641	return;
		642	}
		643
		644	data = _mesa_map_validate_pbo_dest(ctx,
		645	1, &ctx->Pack, table->Size, 1, 1,
		646	format, type, data,
		647	"glGetColorTable");
		648	if (!data)
		649	return;
		650
		651	_mesa_pack_rgba_span_float(ctx, table->Size, rgba,
		652	format, type, data, &ctx->Pack, 0x0);
		653
		654	_mesa_unmap_pbo_dest(ctx, &ctx->Pack);
		655	}
		656
		657
		658
		659	static void GLAPIENTRY
		660	_mesa_ColorTableParameterfv(GLenum target, GLenum pname, const GLfloat *params)
		661	{
		662	GLfloat scale, bias;
		663	GET_CURRENT_CONTEXT(ctx);
		664	ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
		665
		666	switch (target) {
		667	case GL_TEXTURE_COLOR_TABLE_SGI:
		668	scale = ctx->Pixel.TextureColorTableScale;
		669	bias = ctx->Pixel.TextureColorTableBias;
		670	break;
		671	default:
		672	_mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameter(target)");
		673	return;
		674	}
		675
		676	if (pname == GL_COLOR_TABLE_SCALE_SGI) {
		677	COPY_4V(scale, params);
		678	}
		679	else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
		680	COPY_4V(bias, params);
		681	}
		682	else {
		683	_mesa_error(ctx, GL_INVALID_ENUM, "glColorTableParameterfv(pname)");
		684	return;
		685	}
		686
		687	ctx->NewState \|= _NEW_PIXEL;
		688	}
		689
		690
		691
		692	static void GLAPIENTRY
		693	_mesa_ColorTableParameteriv(GLenum target, GLenum pname, const GLint *params)
		694	{
		695	GLfloat fparams[4];
		696	if (pname == GL_TEXTURE_COLOR_TABLE_SGI) {
		697	/* four values */
		698	fparams[0] = (GLfloat) params[0];
		699	fparams[1] = (GLfloat) params[1];
		700	fparams[2] = (GLfloat) params[2];
		701	fparams[3] = (GLfloat) params[3];
		702	}
		703	else {
		704	/* one values */
		705	fparams[0] = (GLfloat) params[0];
		706	}
		707	_mesa_ColorTableParameterfv(target, pname, fparams);
		708	}
		709
		710
		711
		712	static void GLAPIENTRY
		713	_mesa_GetColorTableParameterfv( GLenum target, GLenum pname, GLfloat *params )
		714	{
		715	GET_CURRENT_CONTEXT(ctx);
		716	struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
		717	struct gl_color_table *table = NULL;
		718	ASSERT_OUTSIDE_BEGIN_END(ctx);
		719
		720	switch (target) {
		721	case GL_SHARED_TEXTURE_PALETTE_EXT:
		722	table = &ctx->Texture.Palette;
		723	break;
		724	case GL_TEXTURE_COLOR_TABLE_SGI:
		725	if (!ctx->Extensions.SGI_texture_color_table) {
		726	_mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
		727	return;
		728	}
		729	table = &(texUnit->ColorTable);
		730	if (pname == GL_COLOR_TABLE_SCALE_SGI) {
		731	COPY_4V(params, ctx->Pixel.TextureColorTableScale);
		732	return;
		733	}
		734	else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
		735	COPY_4V(params, ctx->Pixel.TextureColorTableBias);
		736	return;
		737	}
		738	break;
		739	case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
		740	if (!ctx->Extensions.SGI_texture_color_table) {
		741	_mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
		742	return;
		743	}
		744	table = &(texUnit->ProxyColorTable);
		745	break;
		746	default:
		747	/* try texture targets */
		748	{
		749	struct gl_texture_object *texobj
		750	= _mesa_select_tex_object(ctx, texUnit, target);
		751	if (texobj) {
		752	table = &texobj->Palette;
		753	}
		754	else {
		755	_mesa_error(ctx, GL_INVALID_ENUM,
		756	"glGetColorTableParameterfv(target)");
		757	return;
		758	}
		759	}
		760	}
		761
		762	assert(table);
		763
		764	switch (pname) {
		765	case GL_COLOR_TABLE_FORMAT:
		766	*params = (GLfloat) table->InternalFormat;
		767	break;
		768	case GL_COLOR_TABLE_WIDTH:
		769	*params = (GLfloat) table->Size;
		770	break;
		771	case GL_COLOR_TABLE_RED_SIZE:
		772	*params = (GLfloat) table->RedSize;
		773	break;
		774	case GL_COLOR_TABLE_GREEN_SIZE:
		775	*params = (GLfloat) table->GreenSize;
		776	break;
		777	case GL_COLOR_TABLE_BLUE_SIZE:
		778	*params = (GLfloat) table->BlueSize;
		779	break;
		780	case GL_COLOR_TABLE_ALPHA_SIZE:
		781	*params = (GLfloat) table->AlphaSize;
		782	break;
		783	case GL_COLOR_TABLE_LUMINANCE_SIZE:
		784	*params = (GLfloat) table->LuminanceSize;
		785	break;
		786	case GL_COLOR_TABLE_INTENSITY_SIZE:
		787	*params = (GLfloat) table->IntensitySize;
		788	break;
		789	default:
		790	_mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameterfv(pname)" );
		791	return;
		792	}
		793	}
		794
		795
		796
		797	static void GLAPIENTRY
		798	_mesa_GetColorTableParameteriv( GLenum target, GLenum pname, GLint *params )
		799	{
		800	GET_CURRENT_CONTEXT(ctx);
		801	struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(ctx);
		802	struct gl_color_table *table = NULL;
		803	ASSERT_OUTSIDE_BEGIN_END(ctx);
		804
		805	switch (target) {
		806	case GL_SHARED_TEXTURE_PALETTE_EXT:
		807	table = &ctx->Texture.Palette;
		808	break;
		809	case GL_TEXTURE_COLOR_TABLE_SGI:
		810	if (!ctx->Extensions.SGI_texture_color_table) {
		811	_mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
		812	return;
		813	}
		814	table = &(texUnit->ColorTable);
		815	if (pname == GL_COLOR_TABLE_SCALE_SGI) {
		816	params[0] = (GLint) ctx->Pixel.TextureColorTableScale[0];
		817	params[1] = (GLint) ctx->Pixel.TextureColorTableScale[1];
		818	params[2] = (GLint) ctx->Pixel.TextureColorTableScale[2];
		819	params[3] = (GLint) ctx->Pixel.TextureColorTableScale[3];
		820	return;
		821	}
		822	else if (pname == GL_COLOR_TABLE_BIAS_SGI) {
		823	params[0] = (GLint) ctx->Pixel.TextureColorTableBias[0];
		824	params[1] = (GLint) ctx->Pixel.TextureColorTableBias[1];
		825	params[2] = (GLint) ctx->Pixel.TextureColorTableBias[2];
		826	params[3] = (GLint) ctx->Pixel.TextureColorTableBias[3];
		827	return;
		828	}
		829	break;
		830	case GL_PROXY_TEXTURE_COLOR_TABLE_SGI:
		831	if (!ctx->Extensions.SGI_texture_color_table) {
		832	_mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameter(target)");
		833	return;
		834	}
		835	table = &(texUnit->ProxyColorTable);
		836	break;
		837	default:
		838	/* Try texture targets */
		839	{
		840	struct gl_texture_object *texobj
		841	= _mesa_select_tex_object(ctx, texUnit, target);
		842	if (texobj) {
		843	table = &texobj->Palette;
		844	}
		845	else {
		846	_mesa_error(ctx, GL_INVALID_ENUM,
		847	"glGetColorTableParameteriv(target)");
		848	return;
		849	}
		850	}
		851	}
		852
		853	assert(table);
		854
		855	switch (pname) {
		856	case GL_COLOR_TABLE_FORMAT:
		857	*params = table->InternalFormat;
		858	break;
		859	case GL_COLOR_TABLE_WIDTH:
		860	*params = table->Size;
		861	break;
		862	case GL_COLOR_TABLE_RED_SIZE:
		863	*params = table->RedSize;
		864	break;
		865	case GL_COLOR_TABLE_GREEN_SIZE:
		866	*params = table->GreenSize;
		867	break;
		868	case GL_COLOR_TABLE_BLUE_SIZE:
		869	*params = table->BlueSize;
		870	break;
		871	case GL_COLOR_TABLE_ALPHA_SIZE:
		872	*params = table->AlphaSize;
		873	break;
		874	case GL_COLOR_TABLE_LUMINANCE_SIZE:
		875	*params = table->LuminanceSize;
		876	break;
		877	case GL_COLOR_TABLE_INTENSITY_SIZE:
		878	*params = table->IntensitySize;
		879	break;
		880	default:
		881	_mesa_error(ctx, GL_INVALID_ENUM, "glGetColorTableParameteriv(pname)" );
		882	return;
		883	}
		884	}
		885
		886
		887	void
		888	_mesa_init_colortable_dispatch(struct _glapi_table *disp)
		889	{
		890	SET_ColorSubTable(disp, _mesa_ColorSubTable);
		891	SET_ColorTable(disp, _mesa_ColorTable);
		892	SET_ColorTableParameterfv(disp, _mesa_ColorTableParameterfv);
		893	SET_ColorTableParameteriv(disp, _mesa_ColorTableParameteriv);
		894	SET_CopyColorSubTable(disp, _mesa_CopyColorSubTable);
		895	SET_CopyColorTable(disp, _mesa_CopyColorTable);
		896	SET_GetColorTable(disp, _mesa_GetColorTable);
		897	SET_GetColorTableParameterfv(disp, _mesa_GetColorTableParameterfv);
		898	SET_GetColorTableParameteriv(disp, _mesa_GetColorTableParameteriv);
		899	}
		900
		901
		902	#endif /* FEATURE_colortable */
		903
		904
		905	/**********************************************************************/
		906	/*** Initialization ***/
		907	/**********************************************************************/
		908
		909
		910	void
		911	_mesa_init_colortable( struct gl_color_table *p )
		912	{
		913	p->TableF = NULL;
		914	p->TableUB = NULL;
		915	p->Size = 0;
		916	p->InternalFormat = GL_RGBA;
		917	}
		918
		919
		920
		921	void
		922	_mesa_free_colortable_data( struct gl_color_table *p )
		923	{
		924	if (p->TableF) {
		925	free(p->TableF);
		926	p->TableF = NULL;
		927	}
		928	if (p->TableUB) {
		929	free(p->TableUB);
		930	p->TableUB = NULL;
		931	}
		932	}

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(root)/programs/develop/libraries/Mesa/src/mesa/main/colortab.c – Rev 4217