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gerrit-public.fairphone.software / fp2-dev / platform / external / mesa3d / de99760bf3511d05185799c4fb4347f9e5f420f4 / . / src / mesa / main / texstate.c
blob: b352d1a5ad677c24d92fe9f33a940e4b6700cb59 [file] [log] [blame]
/*
* Mesa 3-D graphics library
* Version: 6.5
*
* Copyright (C) 1999-2005 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 texstate.c
*
* Texture state handling.
*/
#include "glheader.h"
#include "colormac.h"
#include "colortab.h"
#include "context.h"
#include "enums.h"
#include "macros.h"
#include "texobj.h"
#include "teximage.h"
#include "texstate.h"
#include "texenvprogram.h"
#include "mtypes.h"
#include "math/m_xform.h"
#define ENUM_TO_FLOAT(X) ((GLfloat)(GLint)(X))
#define ENUM_TO_DOUBLE(X) ((GLdouble)(GLint)(X))
/**
* Default texture combine environment state. This is used to initialize
* a context's texture units and as the basis for converting "classic"
* texture environmnets to ARB_texture_env_combine style values.
*/
static const struct gl_tex_env_combine_state default_combine_state = {
GL_MODULATE, GL_MODULATE,
{ GL_TEXTURE, GL_PREVIOUS, GL_CONSTANT },
{ GL_TEXTURE, GL_PREVIOUS, GL_CONSTANT },
{ GL_SRC_COLOR, GL_SRC_COLOR, GL_SRC_ALPHA },
{ GL_SRC_ALPHA, GL_SRC_ALPHA, GL_SRC_ALPHA },
0, 0,
2, 2
};
void
_mesa_copy_texture_state( const GLcontext *src, GLcontext *dst )
{
GLuint i;
ASSERT(src);
ASSERT(dst);
dst->Texture.CurrentUnit = src->Texture.CurrentUnit;
dst->Texture._GenFlags = src->Texture._GenFlags;
dst->Texture._TexGenEnabled = src->Texture._TexGenEnabled;
dst->Texture._TexMatEnabled = src->Texture._TexMatEnabled;
dst->Texture.SharedPalette = src->Texture.SharedPalette;
/* per-unit state */
for (i = 0; i < src->Const.MaxTextureUnits; i++) {
dst->Texture.Unit[i].Enabled = src->Texture.Unit[i].Enabled;
dst->Texture.Unit[i].EnvMode = src->Texture.Unit[i].EnvMode;
COPY_4V(dst->Texture.Unit[i].EnvColor, src->Texture.Unit[i].EnvColor);
dst->Texture.Unit[i].TexGenEnabled = src->Texture.Unit[i].TexGenEnabled;
dst->Texture.Unit[i].GenModeS = src->Texture.Unit[i].GenModeS;
dst->Texture.Unit[i].GenModeT = src->Texture.Unit[i].GenModeT;
dst->Texture.Unit[i].GenModeR = src->Texture.Unit[i].GenModeR;
dst->Texture.Unit[i].GenModeQ = src->Texture.Unit[i].GenModeQ;
dst->Texture.Unit[i]._GenBitS = src->Texture.Unit[i]._GenBitS;
dst->Texture.Unit[i]._GenBitT = src->Texture.Unit[i]._GenBitT;
dst->Texture.Unit[i]._GenBitR = src->Texture.Unit[i]._GenBitR;
dst->Texture.Unit[i]._GenBitQ = src->Texture.Unit[i]._GenBitQ;
dst->Texture.Unit[i]._GenFlags = src->Texture.Unit[i]._GenFlags;
COPY_4V(dst->Texture.Unit[i].ObjectPlaneS, src->Texture.Unit[i].ObjectPlaneS);
COPY_4V(dst->Texture.Unit[i].ObjectPlaneT, src->Texture.Unit[i].ObjectPlaneT);
COPY_4V(dst->Texture.Unit[i].ObjectPlaneR, src->Texture.Unit[i].ObjectPlaneR);
COPY_4V(dst->Texture.Unit[i].ObjectPlaneQ, src->Texture.Unit[i].ObjectPlaneQ);
COPY_4V(dst->Texture.Unit[i].EyePlaneS, src->Texture.Unit[i].EyePlaneS);
COPY_4V(dst->Texture.Unit[i].EyePlaneT, src->Texture.Unit[i].EyePlaneT);
COPY_4V(dst->Texture.Unit[i].EyePlaneR, src->Texture.Unit[i].EyePlaneR);
COPY_4V(dst->Texture.Unit[i].EyePlaneQ, src->Texture.Unit[i].EyePlaneQ);
dst->Texture.Unit[i].LodBias = src->Texture.Unit[i].LodBias;
/* GL_EXT_texture_env_combine */
dst->Texture.Unit[i].Combine.ModeRGB = src->Texture.Unit[i].Combine.ModeRGB;
dst->Texture.Unit[i].Combine.ModeA = src->Texture.Unit[i].Combine.ModeA;
COPY_3V(dst->Texture.Unit[i].Combine.SourceRGB, src->Texture.Unit[i].Combine.SourceRGB);
COPY_3V(dst->Texture.Unit[i].Combine.SourceA, src->Texture.Unit[i].Combine.SourceA);
COPY_3V(dst->Texture.Unit[i].Combine.OperandRGB, src->Texture.Unit[i].Combine.OperandRGB);
COPY_3V(dst->Texture.Unit[i].Combine.OperandA, src->Texture.Unit[i].Combine.OperandA);
dst->Texture.Unit[i].Combine.ScaleShiftRGB = src->Texture.Unit[i].Combine.ScaleShiftRGB;
dst->Texture.Unit[i].Combine.ScaleShiftA = src->Texture.Unit[i].Combine.ScaleShiftA;
/* texture object state */
_mesa_copy_texture_object(dst->Texture.Unit[i].Current1D,
src->Texture.Unit[i].Current1D);
_mesa_copy_texture_object(dst->Texture.Unit[i].Current2D,
src->Texture.Unit[i].Current2D);
_mesa_copy_texture_object(dst->Texture.Unit[i].Current3D,
src->Texture.Unit[i].Current3D);
_mesa_copy_texture_object(dst->Texture.Unit[i].CurrentCubeMap,
src->Texture.Unit[i].CurrentCubeMap);
_mesa_copy_texture_object(dst->Texture.Unit[i].CurrentRect,
src->Texture.Unit[i].CurrentRect);
}
}
/*
* For debugging
*/
void
_mesa_print_texunit_state( GLcontext *ctx, GLuint unit )
{
const struct gl_texture_unit *texUnit = ctx->Texture.Unit + unit;
_mesa_printf("Texture Unit %d\n", unit);
_mesa_printf(" GL_TEXTURE_ENV_MODE = %s\n", _mesa_lookup_enum_by_nr(texUnit->EnvMode));
_mesa_printf(" GL_COMBINE_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.ModeRGB));
_mesa_printf(" GL_COMBINE_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.ModeA));
_mesa_printf(" GL_SOURCE0_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceRGB[0]));
_mesa_printf(" GL_SOURCE1_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceRGB[1]));
_mesa_printf(" GL_SOURCE2_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceRGB[2]));
_mesa_printf(" GL_SOURCE0_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceA[0]));
_mesa_printf(" GL_SOURCE1_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceA[1]));
_mesa_printf(" GL_SOURCE2_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.SourceA[2]));
_mesa_printf(" GL_OPERAND0_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandRGB[0]));
_mesa_printf(" GL_OPERAND1_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandRGB[1]));
_mesa_printf(" GL_OPERAND2_RGB = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandRGB[2]));
_mesa_printf(" GL_OPERAND0_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandA[0]));
_mesa_printf(" GL_OPERAND1_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandA[1]));
_mesa_printf(" GL_OPERAND2_ALPHA = %s\n", _mesa_lookup_enum_by_nr(texUnit->Combine.OperandA[2]));
_mesa_printf(" GL_RGB_SCALE = %d\n", 1 << texUnit->Combine.ScaleShiftRGB);
_mesa_printf(" GL_ALPHA_SCALE = %d\n", 1 << texUnit->Combine.ScaleShiftA);
_mesa_printf(" GL_TEXTURE_ENV_COLOR = (%f, %f, %f, %f)\n", texUnit->EnvColor[0], texUnit->EnvColor[1], texUnit->EnvColor[2], texUnit->EnvColor[3]);
}
/**********************************************************************/
/* Texture Environment */
/**********************************************************************/
/**
* Convert "classic" texture environment to ARB_texture_env_combine style
* environments.
*
* \param state texture_env_combine state vector to be filled-in.
* \param mode Classic texture environment mode (i.e., \c GL_REPLACE,
* \c GL_BLEND, \c GL_DECAL, etc.).
* \param texBaseFormat Base format of the texture associated with the
* texture unit.
*/
static void
calculate_derived_texenv( struct gl_tex_env_combine_state *state,
GLenum mode, GLenum texBaseFormat )
{
GLenum mode_rgb;
GLenum mode_a;
*state = default_combine_state;
switch (texBaseFormat) {
case GL_ALPHA:
state->SourceRGB[0] = GL_PREVIOUS;
break;
case GL_LUMINANCE_ALPHA:
case GL_INTENSITY:
case GL_RGBA:
break;
case GL_LUMINANCE:
case GL_RGB:
case GL_YCBCR_MESA:
state->SourceA[0] = GL_PREVIOUS;
break;
default:
_mesa_problem(NULL, "Invalid texBaseFormat in calculate_derived_texenv");
return;
}
switch (mode) {
case GL_REPLACE:
case GL_MODULATE:
mode_rgb = (texBaseFormat == GL_ALPHA) ? GL_REPLACE : mode;
mode_a = mode;
break;
case GL_DECAL:
mode_rgb = GL_INTERPOLATE;
mode_a = GL_REPLACE;
state->SourceA[0] = GL_PREVIOUS;
/* Having alpha / luminance / intensity textures replace using the
* incoming fragment color matches the definition in NV_texture_shader.
* The 1.5 spec simply marks these as "undefined".
*/
switch (texBaseFormat) {
case GL_ALPHA:
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA:
case GL_INTENSITY:
state->SourceRGB[0] = GL_PREVIOUS;
break;
case GL_RGB:
case GL_YCBCR_MESA:
mode_rgb = GL_REPLACE;
break;
case GL_RGBA:
state->SourceRGB[2] = GL_TEXTURE;
break;
}
break;
case GL_BLEND:
mode_rgb = GL_INTERPOLATE;
mode_a = GL_MODULATE;
switch (texBaseFormat) {
case GL_ALPHA:
mode_rgb = GL_REPLACE;
break;
case GL_INTENSITY:
mode_a = GL_INTERPOLATE;
state->SourceA[0] = GL_CONSTANT;
state->OperandA[2] = GL_SRC_ALPHA;
/* FALLTHROUGH */
case GL_LUMINANCE:
case GL_RGB:
case GL_LUMINANCE_ALPHA:
case GL_RGBA:
case GL_YCBCR_MESA:
state->SourceRGB[2] = GL_TEXTURE;
state->SourceA[2] = GL_TEXTURE;
state->SourceRGB[0] = GL_CONSTANT;
state->OperandRGB[2] = GL_SRC_COLOR;
break;
}
break;
case GL_ADD:
mode_rgb = (texBaseFormat == GL_ALPHA) ? GL_REPLACE : GL_ADD;
mode_a = (texBaseFormat == GL_INTENSITY) ? GL_ADD : GL_MODULATE;
break;
default:
_mesa_problem(NULL,
"Invalid texture env mode in calculate_derived_texenv");
return;
}
state->ModeRGB = (state->SourceRGB[0] != GL_PREVIOUS)
? mode_rgb : GL_REPLACE;
state->ModeA = (state->SourceA[0] != GL_PREVIOUS)
? mode_a : GL_REPLACE;
}
void GLAPIENTRY
_mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
ASSERT_OUTSIDE_BEGIN_END(ctx);
#define TE_ERROR(errCode, msg, value) \
_mesa_error(ctx, errCode, msg, _mesa_lookup_enum_by_nr(value));
if (target == GL_TEXTURE_ENV) {
switch (pname) {
case GL_TEXTURE_ENV_MODE:
{
const GLenum mode = (GLenum) (GLint) *param;
if (texUnit->EnvMode == mode)
return;
if (mode == GL_MODULATE ||
mode == GL_BLEND ||
mode == GL_DECAL ||
mode == GL_REPLACE ||
(mode == GL_ADD && ctx->Extensions.EXT_texture_env_add) ||
(mode == GL_COMBINE &&
(ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine))) {
/* legal */
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->EnvMode = mode;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
}
break;
case GL_TEXTURE_ENV_COLOR:
{
GLfloat tmp[4];
tmp[0] = CLAMP( param[0], 0.0F, 1.0F );
tmp[1] = CLAMP( param[1], 0.0F, 1.0F );
tmp[2] = CLAMP( param[2], 0.0F, 1.0F );
tmp[3] = CLAMP( param[3], 0.0F, 1.0F );
if (TEST_EQ_4V(tmp, texUnit->EnvColor))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->EnvColor, tmp);
}
break;
case GL_COMBINE_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
const GLenum mode = (GLenum) (GLint) *param;
if (texUnit->Combine.ModeRGB == mode)
return;
switch (mode) {
case GL_REPLACE:
case GL_MODULATE:
case GL_ADD:
case GL_ADD_SIGNED:
case GL_INTERPOLATE:
/* OK */
break;
case GL_SUBTRACT:
if (!ctx->Extensions.ARB_texture_env_combine) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
break;
case GL_DOT3_RGB_EXT:
case GL_DOT3_RGBA_EXT:
if (!ctx->Extensions.EXT_texture_env_dot3) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
break;
case GL_DOT3_RGB:
case GL_DOT3_RGBA:
if (!ctx->Extensions.ARB_texture_env_dot3) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
break;
case GL_MODULATE_ADD_ATI:
case GL_MODULATE_SIGNED_ADD_ATI:
case GL_MODULATE_SUBTRACT_ATI:
if (!ctx->Extensions.ATI_texture_env_combine3) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.ModeRGB = mode;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_COMBINE_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
const GLenum mode = (GLenum) (GLint) *param;
if (texUnit->Combine.ModeA == mode)
return;
switch (mode) {
case GL_REPLACE:
case GL_MODULATE:
case GL_ADD:
case GL_ADD_SIGNED:
case GL_INTERPOLATE:
/* OK */
break;
case GL_SUBTRACT:
if (!ctx->Extensions.ARB_texture_env_combine) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
break;
case GL_MODULATE_ADD_ATI:
case GL_MODULATE_SIGNED_ADD_ATI:
case GL_MODULATE_SUBTRACT_ATI:
if (!ctx->Extensions.ATI_texture_env_combine3) {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode);
return;
}
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.ModeA = mode;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_SOURCE0_RGB:
case GL_SOURCE1_RGB:
case GL_SOURCE2_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
const GLenum source = (GLenum) (GLint) *param;
const GLuint s = pname - GL_SOURCE0_RGB;
if (texUnit->Combine.SourceRGB[s] == source)
return;
if (source == GL_TEXTURE ||
source == GL_CONSTANT ||
source == GL_PRIMARY_COLOR ||
source == GL_PREVIOUS ||
(ctx->Extensions.ARB_texture_env_crossbar &&
source >= GL_TEXTURE0 &&
source < GL_TEXTURE0 + ctx->Const.MaxTextureUnits) ||
(ctx->Extensions.ATI_texture_env_combine3 &&
(source == GL_ZERO || source == GL_ONE))) {
/* legal */
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.SourceRGB[s] = source;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", source);
return;
}
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_SOURCE0_ALPHA:
case GL_SOURCE1_ALPHA:
case GL_SOURCE2_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
const GLenum source = (GLenum) (GLint) *param;
const GLuint s = pname - GL_SOURCE0_ALPHA;
if (texUnit->Combine.SourceA[s] == source)
return;
if (source == GL_TEXTURE ||
source == GL_CONSTANT ||
source == GL_PRIMARY_COLOR ||
source == GL_PREVIOUS ||
(ctx->Extensions.ARB_texture_env_crossbar &&
source >= GL_TEXTURE0 &&
source < GL_TEXTURE0 + ctx->Const.MaxTextureUnits) ||
(ctx->Extensions.ATI_texture_env_combine3 &&
(source == GL_ZERO || source == GL_ONE))) {
/* legal */
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.SourceA[s] = source;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", source);
return;
}
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_OPERAND0_RGB:
case GL_OPERAND1_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
const GLenum operand = (GLenum) (GLint) *param;
const GLuint s = pname - GL_OPERAND0_RGB;
if (texUnit->Combine.OperandRGB[s] == operand)
return;
switch (operand) {
case GL_SRC_COLOR:
case GL_ONE_MINUS_SRC_COLOR:
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA:
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.OperandRGB[s] = operand;
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
return;
}
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_OPERAND0_ALPHA:
case GL_OPERAND1_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
const GLenum operand = (GLenum) (GLint) *param;
if (texUnit->Combine.OperandA[pname-GL_OPERAND0_ALPHA] == operand)
return;
switch (operand) {
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA:
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.OperandA[pname-GL_OPERAND0_ALPHA] = operand;
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
return;
}
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_OPERAND2_RGB:
if (ctx->Extensions.ARB_texture_env_combine) {
const GLenum operand = (GLenum) (GLint) *param;
if (texUnit->Combine.OperandRGB[2] == operand)
return;
switch (operand) {
case GL_SRC_COLOR: /* ARB combine only */
case GL_ONE_MINUS_SRC_COLOR: /* ARB combine only */
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA: /* ARB combine only */
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.OperandRGB[2] = operand;
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
return;
}
}
else if (ctx->Extensions.EXT_texture_env_combine) {
const GLenum operand = (GLenum) (GLint) *param;
if (texUnit->Combine.OperandRGB[2] == operand)
return;
/* operand must be GL_SRC_ALPHA which is the initial value - thus
don't need to actually compare the operand to the possible value */
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
return;
}
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_OPERAND2_ALPHA:
if (ctx->Extensions.ARB_texture_env_combine) {
const GLenum operand = (GLenum) (GLint) *param;
if (texUnit->Combine.OperandA[2] == operand)
return;
switch (operand) {
case GL_SRC_ALPHA:
case GL_ONE_MINUS_SRC_ALPHA: /* ARB combine only */
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.OperandA[2] = operand;
break;
default:
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
return;
}
}
else if (ctx->Extensions.EXT_texture_env_combine) {
const GLenum operand = (GLenum) (GLint) *param;
if (texUnit->Combine.OperandA[2] == operand)
return;
/* operand must be GL_SRC_ALPHA which is the initial value - thus
don't need to actually compare the operand to the possible value */
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", operand);
return;
}
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_RGB_SCALE:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
GLuint newshift;
if (*param == 1.0) {
newshift = 0;
}
else if (*param == 2.0) {
newshift = 1;
}
else if (*param == 4.0) {
newshift = 2;
}
else {
_mesa_error( ctx, GL_INVALID_VALUE,
"glTexEnv(GL_RGB_SCALE not 1, 2 or 4)" );
return;
}
if (texUnit->Combine.ScaleShiftRGB == newshift)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.ScaleShiftRGB = newshift;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
case GL_ALPHA_SCALE:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
GLuint newshift;
if (*param == 1.0) {
newshift = 0;
}
else if (*param == 2.0) {
newshift = 1;
}
else if (*param == 4.0) {
newshift = 2;
}
else {
_mesa_error( ctx, GL_INVALID_VALUE,
"glTexEnv(GL_ALPHA_SCALE not 1, 2 or 4)" );
return;
}
if (texUnit->Combine.ScaleShiftA == newshift)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->Combine.ScaleShiftA = newshift;
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname)" );
return;
}
}
else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
/* GL_EXT_texture_lod_bias */
if (!ctx->Extensions.EXT_texture_lod_bias) {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );
return;
}
if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
if (texUnit->LodBias == param[0])
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->LodBias = param[0];
}
else {
TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname);
return;
}
}
else if (target == GL_POINT_SPRITE_NV) {
/* GL_ARB_point_sprite / GL_NV_point_sprite */
if (!ctx->Extensions.NV_point_sprite
&& !ctx->Extensions.ARB_point_sprite) {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)", target );
return;
}
if (pname == GL_COORD_REPLACE_NV) {
const GLenum value = (GLenum) param[0];
if (value == GL_TRUE || value == GL_FALSE) {
/* It's kind of weird to set point state via glTexEnv,
* but that's what the spec calls for.
*/
const GLboolean state = (GLboolean) value;
if (ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] == state)
return;
FLUSH_VERTICES(ctx, _NEW_POINT);
ctx->Point.CoordReplace[ctx->Texture.CurrentUnit] = state;
}
else {
_mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", value);
return;
}
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname=0x%x)", pname );
return;
}
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(target=0x%x)",target );
return;
}
if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glTexEnv %s %s %.1f(%s) ...\n",
_mesa_lookup_enum_by_nr(target),
_mesa_lookup_enum_by_nr(pname),
*param,
_mesa_lookup_enum_by_nr((GLenum) (GLint) *param));
/* Tell device driver about the new texture environment */
if (ctx->Driver.TexEnv) {
(*ctx->Driver.TexEnv)( ctx, target, pname, param );
}
}
void GLAPIENTRY
_mesa_TexEnvf( GLenum target, GLenum pname, GLfloat param )
{
_mesa_TexEnvfv( target, pname, &param );
}
void GLAPIENTRY
_mesa_TexEnvi( GLenum target, GLenum pname, GLint param )
{
GLfloat p[4];
p[0] = (GLfloat) param;
p[1] = p[2] = p[3] = 0.0;
_mesa_TexEnvfv( target, pname, p );
}
void GLAPIENTRY
_mesa_TexEnviv( GLenum target, GLenum pname, const GLint *param )
{
GLfloat p[4];
if (pname == GL_TEXTURE_ENV_COLOR) {
p[0] = INT_TO_FLOAT( param[0] );
p[1] = INT_TO_FLOAT( param[1] );
p[2] = INT_TO_FLOAT( param[2] );
p[3] = INT_TO_FLOAT( param[3] );
}
else {
p[0] = (GLfloat) param[0];
p[1] = p[2] = p[3] = 0; /* init to zero, just to be safe */
}
_mesa_TexEnvfv( target, pname, p );
}
void GLAPIENTRY
_mesa_GetTexEnvfv( GLenum target, GLenum pname, GLfloat *params )
{
GET_CURRENT_CONTEXT(ctx);
const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target == GL_TEXTURE_ENV) {
switch (pname) {
case GL_TEXTURE_ENV_MODE:
*params = ENUM_TO_FLOAT(texUnit->EnvMode);
break;
case GL_TEXTURE_ENV_COLOR:
COPY_4FV( params, texUnit->EnvColor );
break;
case GL_COMBINE_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.ModeRGB;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_COMBINE_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.ModeA;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_SOURCE0_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.SourceRGB[0];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_SOURCE1_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.SourceRGB[1];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_SOURCE2_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.SourceRGB[2];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_SOURCE0_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.SourceA[0];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_SOURCE1_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.SourceA[1];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_SOURCE2_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.SourceA[2];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_OPERAND0_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.OperandRGB[0];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_OPERAND1_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.OperandRGB[1];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_OPERAND2_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.OperandRGB[2];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_OPERAND0_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.OperandA[0];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_OPERAND1_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.OperandA[1];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_OPERAND2_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLfloat) texUnit->Combine.OperandA[2];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
}
break;
case GL_RGB_SCALE:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
if (texUnit->Combine.ScaleShiftRGB == 0)
*params = 1.0;
else if (texUnit->Combine.ScaleShiftRGB == 1)
*params = 2.0;
else
*params = 4.0;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
return;
}
break;
case GL_ALPHA_SCALE:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
if (texUnit->Combine.ScaleShiftA == 0)
*params = 1.0;
else if (texUnit->Combine.ScaleShiftA == 1)
*params = 2.0;
else
*params = 4.0;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
return;
}
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname=0x%x)", pname);
}
}
else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
/* GL_EXT_texture_lod_bias */
if (!ctx->Extensions.EXT_texture_lod_bias) {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
return;
}
if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
*params = texUnit->LodBias;
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );
return;
}
}
else if (target == GL_POINT_SPRITE_NV) {
/* GL_ARB_point_sprite / GL_NV_point_sprite */
if (!ctx->Extensions.NV_point_sprite
&& !ctx->Extensions.ARB_point_sprite) {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
return;
}
if (pname == GL_COORD_REPLACE_NV) {
*params = (GLfloat) ctx->Point.CoordReplace[ctx->Texture.CurrentUnit];
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)" );
return;
}
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnvfv(target)" );
return;
}
}
void GLAPIENTRY
_mesa_GetTexEnviv( GLenum target, GLenum pname, GLint *params )
{
GET_CURRENT_CONTEXT(ctx);
const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target == GL_TEXTURE_ENV) {
switch (pname) {
case GL_TEXTURE_ENV_MODE:
*params = (GLint) texUnit->EnvMode;
break;
case GL_TEXTURE_ENV_COLOR:
params[0] = FLOAT_TO_INT( texUnit->EnvColor[0] );
params[1] = FLOAT_TO_INT( texUnit->EnvColor[1] );
params[2] = FLOAT_TO_INT( texUnit->EnvColor[2] );
params[3] = FLOAT_TO_INT( texUnit->EnvColor[3] );
break;
case GL_COMBINE_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.ModeRGB;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_COMBINE_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.ModeA;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_SOURCE0_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.SourceRGB[0];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_SOURCE1_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.SourceRGB[1];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_SOURCE2_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.SourceRGB[2];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_SOURCE0_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.SourceA[0];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_SOURCE1_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.SourceA[1];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_SOURCE2_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.SourceA[2];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_OPERAND0_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.OperandRGB[0];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_OPERAND1_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.OperandRGB[1];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_OPERAND2_RGB:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.OperandRGB[2];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_OPERAND0_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.OperandA[0];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_OPERAND1_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.OperandA[1];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_OPERAND2_ALPHA:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
*params = (GLint) texUnit->Combine.OperandA[2];
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
}
break;
case GL_RGB_SCALE:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
if (texUnit->Combine.ScaleShiftRGB == 0)
*params = 1;
else if (texUnit->Combine.ScaleShiftRGB == 1)
*params = 2;
else
*params = 4;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
return;
}
break;
case GL_ALPHA_SCALE:
if (ctx->Extensions.EXT_texture_env_combine ||
ctx->Extensions.ARB_texture_env_combine) {
if (texUnit->Combine.ScaleShiftA == 0)
*params = 1;
else if (texUnit->Combine.ScaleShiftA == 1)
*params = 2;
else
*params = 4;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
return;
}
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname=0x%x)",
pname);
}
}
else if (target == GL_TEXTURE_FILTER_CONTROL_EXT) {
/* GL_EXT_texture_lod_bias */
if (!ctx->Extensions.EXT_texture_lod_bias) {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
return;
}
if (pname == GL_TEXTURE_LOD_BIAS_EXT) {
*params = (GLint) texUnit->LodBias;
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );
return;
}
}
else if (target == GL_POINT_SPRITE_NV) {
/* GL_ARB_point_sprite / GL_NV_point_sprite */
if (!ctx->Extensions.NV_point_sprite
&& !ctx->Extensions.ARB_point_sprite) {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
return;
}
if (pname == GL_COORD_REPLACE_NV) {
*params = (GLint) ctx->Point.CoordReplace[ctx->Texture.CurrentUnit];
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)" );
return;
}
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexEnviv(target)" );
return;
}
}
/**********************************************************************/
/* Texture Parameters */
/**********************************************************************/
static GLboolean
_mesa_validate_texture_wrap_mode(GLcontext * ctx,
GLenum target, GLenum eparam)
{
const struct gl_extensions * const e = & ctx->Extensions;
if (eparam == GL_CLAMP || eparam == GL_CLAMP_TO_EDGE ||
(eparam == GL_CLAMP_TO_BORDER && e->ARB_texture_border_clamp)) {
/* any texture target */
return GL_TRUE;
}
else if (target != GL_TEXTURE_RECTANGLE_NV &&
(eparam == GL_REPEAT ||
(eparam == GL_MIRRORED_REPEAT &&
e->ARB_texture_mirrored_repeat) ||
(eparam == GL_MIRROR_CLAMP_EXT &&
(e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) ||
(eparam == GL_MIRROR_CLAMP_TO_EDGE_EXT &&
(e->ATI_texture_mirror_once || e->EXT_texture_mirror_clamp)) ||
(eparam == GL_MIRROR_CLAMP_TO_BORDER_EXT &&
(e->EXT_texture_mirror_clamp)))) {
/* non-rectangle texture */
return GL_TRUE;
}
_mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
return GL_FALSE;
}
void GLAPIENTRY
_mesa_TexParameterf( GLenum target, GLenum pname, GLfloat param )
{
_mesa_TexParameterfv(target, pname, &param);
}
void GLAPIENTRY
_mesa_TexParameterfv( GLenum target, GLenum pname, const GLfloat *params )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
GLenum eparam = (GLenum) (GLint) params[0];
struct gl_texture_object *texObj;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glTexParameter %s %s %.1f(%s)...\n",
_mesa_lookup_enum_by_nr(target),
_mesa_lookup_enum_by_nr(pname),
*params,
_mesa_lookup_enum_by_nr(eparam));
switch (target) {
case GL_TEXTURE_1D:
texObj = texUnit->Current1D;
break;
case GL_TEXTURE_2D:
texObj = texUnit->Current2D;
break;
case GL_TEXTURE_3D:
texObj = texUnit->Current3D;
break;
case GL_TEXTURE_CUBE_MAP:
if (!ctx->Extensions.ARB_texture_cube_map) {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" );
return;
}
texObj = texUnit->CurrentCubeMap;
break;
case GL_TEXTURE_RECTANGLE_NV:
if (!ctx->Extensions.NV_texture_rectangle) {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" );
return;
}
texObj = texUnit->CurrentRect;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexParameter(target)" );
return;
}
switch (pname) {
case GL_TEXTURE_MIN_FILTER:
/* A small optimization */
if (texObj->MinFilter == eparam)
return;
if (eparam==GL_NEAREST || eparam==GL_LINEAR) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->MinFilter = eparam;
}
else if ((eparam==GL_NEAREST_MIPMAP_NEAREST ||
eparam==GL_LINEAR_MIPMAP_NEAREST ||
eparam==GL_NEAREST_MIPMAP_LINEAR ||
eparam==GL_LINEAR_MIPMAP_LINEAR) &&
texObj->Target != GL_TEXTURE_RECTANGLE_NV) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->MinFilter = eparam;
}
else {
_mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
return;
}
break;
case GL_TEXTURE_MAG_FILTER:
/* A small optimization */
if (texObj->MagFilter == eparam)
return;
if (eparam==GL_NEAREST || eparam==GL_LINEAR) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->MagFilter = eparam;
}
else {
_mesa_error( ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
return;
}
break;
case GL_TEXTURE_WRAP_S:
if (texObj->WrapS == eparam)
return;
if (_mesa_validate_texture_wrap_mode(ctx, texObj->Target, eparam)) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->WrapS = eparam;
}
else {
return;
}
break;
case GL_TEXTURE_WRAP_T:
if (texObj->WrapT == eparam)
return;
if (_mesa_validate_texture_wrap_mode(ctx, texObj->Target, eparam)) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->WrapT = eparam;
}
else {
return;
}
break;
case GL_TEXTURE_WRAP_R:
if (texObj->WrapR == eparam)
return;
if (_mesa_validate_texture_wrap_mode(ctx, texObj->Target, eparam)) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->WrapR = eparam;
}
else {
return;
}
break;
case GL_TEXTURE_BORDER_COLOR:
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->BorderColor[RCOMP] = params[0];
texObj->BorderColor[GCOMP] = params[1];
texObj->BorderColor[BCOMP] = params[2];
texObj->BorderColor[ACOMP] = params[3];
UNCLAMPED_FLOAT_TO_CHAN(texObj->_BorderChan[RCOMP], params[0]);
UNCLAMPED_FLOAT_TO_CHAN(texObj->_BorderChan[GCOMP], params[1]);
UNCLAMPED_FLOAT_TO_CHAN(texObj->_BorderChan[BCOMP], params[2]);
UNCLAMPED_FLOAT_TO_CHAN(texObj->_BorderChan[ACOMP], params[3]);
break;
case GL_TEXTURE_MIN_LOD:
if (texObj->MinLod == params[0])
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->MinLod = params[0];
break;
case GL_TEXTURE_MAX_LOD:
if (texObj->MaxLod == params[0])
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->MaxLod = params[0];
break;
case GL_TEXTURE_BASE_LEVEL:
if (params[0] < 0.0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
return;
}
if (target == GL_TEXTURE_RECTANGLE_NV && params[0] != 0.0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
return;
}
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->BaseLevel = (GLint) params[0];
break;
case GL_TEXTURE_MAX_LEVEL:
if (params[0] < 0.0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
return;
}
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->MaxLevel = (GLint) params[0];
break;
case GL_TEXTURE_PRIORITY:
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->Priority = CLAMP( params[0], 0.0F, 1.0F );
break;
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
if (ctx->Extensions.EXT_texture_filter_anisotropic) {
if (params[0] < 1.0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glTexParameter(param)" );
return;
}
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
/* clamp to max, that's what NVIDIA does */
texObj->MaxAnisotropy = MIN2(params[0],
ctx->Const.MaxTextureMaxAnisotropy);
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(pname=GL_TEXTURE_MAX_ANISOTROPY_EXT)");
return;
}
break;
case GL_TEXTURE_COMPARE_SGIX:
if (ctx->Extensions.SGIX_shadow) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->CompareFlag = params[0] ? GL_TRUE : GL_FALSE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(pname=GL_TEXTURE_COMPARE_SGIX)");
return;
}
break;
case GL_TEXTURE_COMPARE_OPERATOR_SGIX:
if (ctx->Extensions.SGIX_shadow) {
GLenum op = (GLenum) params[0];
if (op == GL_TEXTURE_LEQUAL_R_SGIX ||
op == GL_TEXTURE_GEQUAL_R_SGIX) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->CompareOperator = op;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexParameter(param)");
}
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(pname=GL_TEXTURE_COMPARE_OPERATOR_SGIX)");
return;
}
break;
case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */
if (ctx->Extensions.SGIX_shadow_ambient) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->ShadowAmbient = CLAMP(params[0], 0.0F, 1.0F);
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(pname=GL_SHADOW_AMBIENT_SGIX)");
return;
}
break;
case GL_GENERATE_MIPMAP_SGIS:
if (ctx->Extensions.SGIS_generate_mipmap) {
texObj->GenerateMipmap = params[0] ? GL_TRUE : GL_FALSE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(pname=GL_GENERATE_MIPMAP_SGIS)");
return;
}
break;
case GL_TEXTURE_COMPARE_MODE_ARB:
if (ctx->Extensions.ARB_shadow) {
const GLenum mode = (GLenum) params[0];
if (mode == GL_NONE || mode == GL_COMPARE_R_TO_TEXTURE_ARB) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->CompareMode = mode;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(bad GL_TEXTURE_COMPARE_MODE_ARB: 0x%x)", mode);
return;
}
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(pname=GL_TEXTURE_COMPARE_MODE_ARB)");
return;
}
break;
case GL_TEXTURE_COMPARE_FUNC_ARB:
if (ctx->Extensions.ARB_shadow) {
const GLenum func = (GLenum) params[0];
if (func == GL_LEQUAL || func == GL_GEQUAL) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->CompareFunc = func;
}
else if (ctx->Extensions.EXT_shadow_funcs &&
(func == GL_EQUAL ||
func == GL_NOTEQUAL ||
func == GL_LESS ||
func == GL_GREATER ||
func == GL_ALWAYS ||
func == GL_NEVER)) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->CompareFunc = func;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(bad GL_TEXTURE_COMPARE_FUNC_ARB)");
return;
}
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(pname=GL_TEXTURE_COMPARE_FUNC_ARB)");
return;
}
break;
case GL_DEPTH_TEXTURE_MODE_ARB:
if (ctx->Extensions.ARB_depth_texture) {
const GLenum result = (GLenum) params[0];
if (result == GL_LUMINANCE || result == GL_INTENSITY
|| result == GL_ALPHA) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->DepthMode = result;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(bad GL_DEPTH_TEXTURE_MODE_ARB)");
return;
}
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(pname=GL_DEPTH_TEXTURE_MODE_ARB)");
return;
}
break;
case GL_TEXTURE_LOD_BIAS:
/* NOTE: this is really part of OpenGL 1.4, not EXT_texture_lod_bias*/
if (ctx->Extensions.EXT_texture_lod_bias) {
if (texObj->LodBias != params[0]) {
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texObj->LodBias = params[0];
}
}
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"glTexParameter(pname=0x%x)", pname);
return;
}
texObj->Complete = GL_FALSE;
if (ctx->Driver.TexParameter) {
(*ctx->Driver.TexParameter)( ctx, target, texObj, pname, params );
}
}
void GLAPIENTRY
_mesa_TexParameteri( GLenum target, GLenum pname, GLint param )
{
GLfloat fparam[4];
if (pname == GL_TEXTURE_PRIORITY)
fparam[0] = INT_TO_FLOAT(param);
else
fparam[0] = (GLfloat) param;
fparam[1] = fparam[2] = fparam[3] = 0.0;
_mesa_TexParameterfv(target, pname, fparam);
}
void GLAPIENTRY
_mesa_TexParameteriv( GLenum target, GLenum pname, const GLint *params )
{
GLfloat fparam[4];
if (pname == GL_TEXTURE_BORDER_COLOR) {
fparam[0] = INT_TO_FLOAT(params[0]);
fparam[1] = INT_TO_FLOAT(params[1]);
fparam[2] = INT_TO_FLOAT(params[2]);
fparam[3] = INT_TO_FLOAT(params[3]);
}
else {
if (pname == GL_TEXTURE_PRIORITY)
fparam[0] = INT_TO_FLOAT(params[0]);
else
fparam[0] = (GLfloat) params[0];
fparam[1] = fparam[2] = fparam[3] = 0.0F;
}
_mesa_TexParameterfv(target, pname, fparam);
}
void GLAPIENTRY
_mesa_GetTexLevelParameterfv( GLenum target, GLint level,
GLenum pname, GLfloat *params )
{
GLint iparam;
_mesa_GetTexLevelParameteriv( target, level, pname, &iparam );
*params = (GLfloat) iparam;
}
static GLuint
tex_image_dimensions(GLcontext *ctx, GLenum target)
{
switch (target) {
case GL_TEXTURE_1D:
case GL_PROXY_TEXTURE_1D:
return 1;
case GL_TEXTURE_2D:
case GL_PROXY_TEXTURE_2D:
return 2;
case GL_TEXTURE_3D:
case GL_PROXY_TEXTURE_3D:
return 3;
case GL_TEXTURE_CUBE_MAP:
case GL_PROXY_TEXTURE_CUBE_MAP:
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
return ctx->Extensions.ARB_texture_cube_map ? 2 : 0;
case GL_TEXTURE_RECTANGLE_NV:
case GL_PROXY_TEXTURE_RECTANGLE_NV:
return ctx->Extensions.NV_texture_rectangle ? 2 : 0;
default:
_mesa_problem(ctx, "bad target in _mesa_tex_target_dimensions()");
return 0;
}
}
void GLAPIENTRY
_mesa_GetTexLevelParameteriv( GLenum target, GLint level,
GLenum pname, GLint *params )
{
GET_CURRENT_CONTEXT(ctx);
const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
const struct gl_texture_image *img = NULL;
GLuint dimensions;
GLboolean isProxy;
GLint maxLevels;
ASSERT_OUTSIDE_BEGIN_END(ctx);
/* this will catch bad target values */
dimensions = tex_image_dimensions(ctx, target); /* 1, 2 or 3 */
if (dimensions == 0) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexLevelParameter[if]v(target)");
return;
}
maxLevels = _mesa_max_texture_levels(ctx, target);
if (maxLevels == 0) {
/* should not happen since <target> was just checked above */
_mesa_problem(ctx, "maxLevels=0 in _mesa_GetTexLevelParameter");
return;
}
if (level < 0 || level >= maxLevels) {
_mesa_error( ctx, GL_INVALID_VALUE, "glGetTexLevelParameter[if]v" );
return;
}
img = _mesa_select_tex_image(ctx, texUnit, target, level);
if (!img || !img->TexFormat) {
/* undefined texture image */
if (pname == GL_TEXTURE_COMPONENTS)
*params = 1;
else
*params = 0;
return;
}
isProxy = _mesa_is_proxy_texture(target);
switch (pname) {
case GL_TEXTURE_WIDTH:
*params = img->Width;
return;
case GL_TEXTURE_HEIGHT:
*params = img->Height;
return;
case GL_TEXTURE_DEPTH:
*params = img->Depth;
return;
case GL_TEXTURE_INTERNAL_FORMAT:
*params = img->InternalFormat;
return;
case GL_TEXTURE_BORDER:
*params = img->Border;
return;
case GL_TEXTURE_RED_SIZE:
if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA)
*params = img->TexFormat->RedBits;
else
*params = 0;
return;
case GL_TEXTURE_GREEN_SIZE:
if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA)
*params = img->TexFormat->GreenBits;
else
*params = 0;
return;
case GL_TEXTURE_BLUE_SIZE:
if (img->_BaseFormat == GL_RGB || img->_BaseFormat == GL_RGBA)
*params = img->TexFormat->BlueBits;
else
*params = 0;
return;
case GL_TEXTURE_ALPHA_SIZE:
if (img->_BaseFormat == GL_ALPHA ||
img->_BaseFormat == GL_LUMINANCE_ALPHA ||
img->_BaseFormat == GL_RGBA)
*params = img->TexFormat->AlphaBits;
else
*params = 0;
return;
case GL_TEXTURE_INTENSITY_SIZE:
if (img->_BaseFormat != GL_INTENSITY)
*params = 0;
else if (img->TexFormat->IntensityBits > 0)
*params = img->TexFormat->IntensityBits;
else /* intensity probably stored as rgb texture */
*params = MIN2(img->TexFormat->RedBits, img->TexFormat->GreenBits);
return;
case GL_TEXTURE_LUMINANCE_SIZE:
if (img->_BaseFormat != GL_LUMINANCE &&
img->_BaseFormat != GL_LUMINANCE_ALPHA)
*params = 0;
else if (img->TexFormat->LuminanceBits > 0)
*params = img->TexFormat->LuminanceBits;
else /* luminance probably stored as rgb texture */
*params = MIN2(img->TexFormat->RedBits, img->TexFormat->GreenBits);
return;
case GL_TEXTURE_INDEX_SIZE_EXT:
if (img->_BaseFormat == GL_COLOR_INDEX)
*params = img->TexFormat->IndexBits;
else
*params = 0;
return;
case GL_TEXTURE_DEPTH_SIZE_ARB:
if (ctx->Extensions.SGIX_depth_texture ||
ctx->Extensions.ARB_depth_texture)
*params = img->TexFormat->DepthBits;
else
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
return;
case GL_TEXTURE_STENCIL_SIZE_EXT:
if (ctx->Extensions.EXT_packed_depth_stencil) {
*params = img->TexFormat->StencilBits;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
return;
/* GL_ARB_texture_compression */
case GL_TEXTURE_COMPRESSED_IMAGE_SIZE:
if (ctx->Extensions.ARB_texture_compression) {
if (img->IsCompressed && !isProxy)
*params = img->CompressedSize;
else
_mesa_error(ctx, GL_INVALID_OPERATION,
"glGetTexLevelParameter[if]v(pname)");
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
return;
case GL_TEXTURE_COMPRESSED:
if (ctx->Extensions.ARB_texture_compression) {
*params = (GLint) img->IsCompressed;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
return;
/* GL_ARB_texture_float */
case GL_TEXTURE_RED_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = img->TexFormat->RedBits ? img->TexFormat->DataType : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
return;
case GL_TEXTURE_GREEN_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = img->TexFormat->GreenBits ? img->TexFormat->DataType : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
return;
case GL_TEXTURE_BLUE_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = img->TexFormat->BlueBits ? img->TexFormat->DataType : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
return;
case GL_TEXTURE_ALPHA_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = img->TexFormat->AlphaBits ? img->TexFormat->DataType : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
return;
case GL_TEXTURE_LUMINANCE_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = img->TexFormat->LuminanceBits ? img->TexFormat->DataType : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
return;
case GL_TEXTURE_INTENSITY_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = img->TexFormat->IntensityBits ? img->TexFormat->DataType : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
return;
case GL_TEXTURE_DEPTH_TYPE_ARB:
if (ctx->Extensions.ARB_texture_float) {
*params = img->TexFormat->DepthBits ? img->TexFormat->DataType : GL_NONE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
return;
default:
_mesa_error(ctx, GL_INVALID_ENUM,
"glGetTexLevelParameter[if]v(pname)");
}
}
void GLAPIENTRY
_mesa_GetTexParameterfv( GLenum target, GLenum pname, GLfloat *params )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
struct gl_texture_object *obj;
ASSERT_OUTSIDE_BEGIN_END(ctx);
obj = _mesa_select_tex_object(ctx, texUnit, target);
if (!obj) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(target)");
return;
}
switch (pname) {
case GL_TEXTURE_MAG_FILTER:
*params = ENUM_TO_FLOAT(obj->MagFilter);
return;
case GL_TEXTURE_MIN_FILTER:
*params = ENUM_TO_FLOAT(obj->MinFilter);
return;
case GL_TEXTURE_WRAP_S:
*params = ENUM_TO_FLOAT(obj->WrapS);
return;
case GL_TEXTURE_WRAP_T:
*params = ENUM_TO_FLOAT(obj->WrapT);
return;
case GL_TEXTURE_WRAP_R:
*params = ENUM_TO_FLOAT(obj->WrapR);
return;
case GL_TEXTURE_BORDER_COLOR:
params[0] = CLAMP(obj->BorderColor[0], 0.0F, 1.0F);
params[1] = CLAMP(obj->BorderColor[1], 0.0F, 1.0F);
params[2] = CLAMP(obj->BorderColor[2], 0.0F, 1.0F);
params[3] = CLAMP(obj->BorderColor[3], 0.0F, 1.0F);
return;
case GL_TEXTURE_RESIDENT:
{
GLboolean resident;
if (ctx->Driver.IsTextureResident)
resident = ctx->Driver.IsTextureResident(ctx, obj);
else
resident = GL_TRUE;
*params = ENUM_TO_FLOAT(resident);
}
return;
case GL_TEXTURE_PRIORITY:
*params = obj->Priority;
return;
case GL_TEXTURE_MIN_LOD:
*params = obj->MinLod;
return;
case GL_TEXTURE_MAX_LOD:
*params = obj->MaxLod;
return;
case GL_TEXTURE_BASE_LEVEL:
*params = (GLfloat) obj->BaseLevel;
return;
case GL_TEXTURE_MAX_LEVEL:
*params = (GLfloat) obj->MaxLevel;
return;
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
if (ctx->Extensions.EXT_texture_filter_anisotropic) {
*params = obj->MaxAnisotropy;
return;
}
break;
case GL_TEXTURE_COMPARE_SGIX:
if (ctx->Extensions.SGIX_shadow) {
*params = (GLfloat) obj->CompareFlag;
return;
}
break;
case GL_TEXTURE_COMPARE_OPERATOR_SGIX:
if (ctx->Extensions.SGIX_shadow) {
*params = (GLfloat) obj->CompareOperator;
return;
}
break;
case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */
if (ctx->Extensions.SGIX_shadow_ambient) {
*params = obj->ShadowAmbient;
return;
}
break;
case GL_GENERATE_MIPMAP_SGIS:
if (ctx->Extensions.SGIS_generate_mipmap) {
*params = (GLfloat) obj->GenerateMipmap;
return;
}
break;
case GL_TEXTURE_COMPARE_MODE_ARB:
if (ctx->Extensions.ARB_shadow) {
*params = (GLfloat) obj->CompareMode;
return;
}
break;
case GL_TEXTURE_COMPARE_FUNC_ARB:
if (ctx->Extensions.ARB_shadow) {
*params = (GLfloat) obj->CompareFunc;
return;
}
break;
case GL_DEPTH_TEXTURE_MODE_ARB:
if (ctx->Extensions.ARB_depth_texture) {
*params = (GLfloat) obj->DepthMode;
return;
}
break;
case GL_TEXTURE_LOD_BIAS:
if (ctx->Extensions.EXT_texture_lod_bias) {
*params = obj->LodBias;
return;
}
break;
default:
; /* silence warnings */
}
/* If we get here, pname was an unrecognized enum */
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameterfv(pname=0x%x)",
pname);
}
void GLAPIENTRY
_mesa_GetTexParameteriv( GLenum target, GLenum pname, GLint *params )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
struct gl_texture_object *obj;
ASSERT_OUTSIDE_BEGIN_END(ctx);
obj = _mesa_select_tex_object(ctx, texUnit, target);
if (!obj) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(target)");
return;
}
switch (pname) {
case GL_TEXTURE_MAG_FILTER:
*params = (GLint) obj->MagFilter;
return;
case GL_TEXTURE_MIN_FILTER:
*params = (GLint) obj->MinFilter;
return;
case GL_TEXTURE_WRAP_S:
*params = (GLint) obj->WrapS;
return;
case GL_TEXTURE_WRAP_T:
*params = (GLint) obj->WrapT;
return;
case GL_TEXTURE_WRAP_R:
*params = (GLint) obj->WrapR;
return;
case GL_TEXTURE_BORDER_COLOR:
{
GLfloat b[4];
b[0] = CLAMP(obj->BorderColor[0], 0.0F, 1.0F);
b[1] = CLAMP(obj->BorderColor[1], 0.0F, 1.0F);
b[2] = CLAMP(obj->BorderColor[2], 0.0F, 1.0F);
b[3] = CLAMP(obj->BorderColor[3], 0.0F, 1.0F);
params[0] = FLOAT_TO_INT(b[0]);
params[1] = FLOAT_TO_INT(b[1]);
params[2] = FLOAT_TO_INT(b[2]);
params[3] = FLOAT_TO_INT(b[3]);
}
return;
case GL_TEXTURE_RESIDENT:
{
GLboolean resident;
if (ctx->Driver.IsTextureResident)
resident = ctx->Driver.IsTextureResident(ctx, obj);
else
resident = GL_TRUE;
*params = (GLint) resident;
}
return;
case GL_TEXTURE_PRIORITY:
*params = FLOAT_TO_INT(obj->Priority);
return;
case GL_TEXTURE_MIN_LOD:
*params = (GLint) obj->MinLod;
return;
case GL_TEXTURE_MAX_LOD:
*params = (GLint) obj->MaxLod;
return;
case GL_TEXTURE_BASE_LEVEL:
*params = obj->BaseLevel;
return;
case GL_TEXTURE_MAX_LEVEL:
*params = obj->MaxLevel;
return;
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
if (ctx->Extensions.EXT_texture_filter_anisotropic) {
*params = (GLint) obj->MaxAnisotropy;
return;
}
break;
case GL_TEXTURE_COMPARE_SGIX:
if (ctx->Extensions.SGIX_shadow) {
*params = (GLint) obj->CompareFlag;
return;
}
break;
case GL_TEXTURE_COMPARE_OPERATOR_SGIX:
if (ctx->Extensions.SGIX_shadow) {
*params = (GLint) obj->CompareOperator;
return;
}
break;
case GL_SHADOW_AMBIENT_SGIX: /* aka GL_TEXTURE_COMPARE_FAIL_VALUE_ARB */
if (ctx->Extensions.SGIX_shadow_ambient) {
*params = (GLint) FLOAT_TO_INT(obj->ShadowAmbient);
return;
}
break;
case GL_GENERATE_MIPMAP_SGIS:
if (ctx->Extensions.SGIS_generate_mipmap) {
*params = (GLint) obj->GenerateMipmap;
return;
}
break;
case GL_TEXTURE_COMPARE_MODE_ARB:
if (ctx->Extensions.ARB_shadow) {
*params = (GLint) obj->CompareMode;
return;
}
break;
case GL_TEXTURE_COMPARE_FUNC_ARB:
if (ctx->Extensions.ARB_shadow) {
*params = (GLint) obj->CompareFunc;
return;
}
break;
case GL_DEPTH_TEXTURE_MODE_ARB:
if (ctx->Extensions.ARB_depth_texture) {
*params = (GLint) obj->DepthMode;
return;
}
break;
case GL_TEXTURE_LOD_BIAS:
if (ctx->Extensions.EXT_texture_lod_bias) {
*params = (GLint) obj->LodBias;
return;
}
break;
default:
; /* silence warnings */
}
/* If we get here, pname was an unrecognized enum */
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexParameteriv(pname=0x%x)", pname);
}
/**********************************************************************/
/* Texture Coord Generation */
/**********************************************************************/
#if FEATURE_texgen
void GLAPIENTRY
_mesa_TexGenfv( GLenum coord, GLenum pname, const GLfloat *params )
{
GET_CURRENT_CONTEXT(ctx);
GLuint tUnit = ctx->Texture.CurrentUnit;
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[tUnit];
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glTexGen %s %s %.1f(%s)...\n",
_mesa_lookup_enum_by_nr(coord),
_mesa_lookup_enum_by_nr(pname),
*params,
_mesa_lookup_enum_by_nr((GLenum) (GLint) *params));
switch (coord) {
case GL_S:
if (pname==GL_TEXTURE_GEN_MODE) {
GLenum mode = (GLenum) (GLint) *params;
GLbitfield bits;
switch (mode) {
case GL_OBJECT_LINEAR:
bits = TEXGEN_OBJ_LINEAR;
break;
case GL_EYE_LINEAR:
bits = TEXGEN_EYE_LINEAR;
break;
case GL_REFLECTION_MAP_NV:
bits = TEXGEN_REFLECTION_MAP_NV;
break;
case GL_NORMAL_MAP_NV:
bits = TEXGEN_NORMAL_MAP_NV;
break;
case GL_SPHERE_MAP:
bits = TEXGEN_SPHERE_MAP;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
return;
}
if (texUnit->GenModeS == mode)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->GenModeS = mode;
texUnit->_GenBitS = bits;
}
else if (pname==GL_OBJECT_PLANE) {
if (TEST_EQ_4V(texUnit->ObjectPlaneS, params))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->ObjectPlaneS, params);
}
else if (pname==GL_EYE_PLANE) {
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
if (TEST_EQ_4V(texUnit->EyePlaneS, tmp))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->EyePlaneS, tmp);
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
return;
}
break;
case GL_T:
if (pname==GL_TEXTURE_GEN_MODE) {
GLenum mode = (GLenum) (GLint) *params;
GLbitfield bitt;
switch (mode) {
case GL_OBJECT_LINEAR:
bitt = TEXGEN_OBJ_LINEAR;
break;
case GL_EYE_LINEAR:
bitt = TEXGEN_EYE_LINEAR;
break;
case GL_REFLECTION_MAP_NV:
bitt = TEXGEN_REFLECTION_MAP_NV;
break;
case GL_NORMAL_MAP_NV:
bitt = TEXGEN_NORMAL_MAP_NV;
break;
case GL_SPHERE_MAP:
bitt = TEXGEN_SPHERE_MAP;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
return;
}
if (texUnit->GenModeT == mode)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->GenModeT = mode;
texUnit->_GenBitT = bitt;
}
else if (pname==GL_OBJECT_PLANE) {
if (TEST_EQ_4V(texUnit->ObjectPlaneT, params))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->ObjectPlaneT, params);
}
else if (pname==GL_EYE_PLANE) {
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
if (TEST_EQ_4V(texUnit->EyePlaneT, tmp))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->EyePlaneT, tmp);
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
return;
}
break;
case GL_R:
if (pname==GL_TEXTURE_GEN_MODE) {
GLenum mode = (GLenum) (GLint) *params;
GLbitfield bitr;
switch (mode) {
case GL_OBJECT_LINEAR:
bitr = TEXGEN_OBJ_LINEAR;
break;
case GL_REFLECTION_MAP_NV:
bitr = TEXGEN_REFLECTION_MAP_NV;
break;
case GL_NORMAL_MAP_NV:
bitr = TEXGEN_NORMAL_MAP_NV;
break;
case GL_EYE_LINEAR:
bitr = TEXGEN_EYE_LINEAR;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
return;
}
if (texUnit->GenModeR == mode)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->GenModeR = mode;
texUnit->_GenBitR = bitr;
}
else if (pname==GL_OBJECT_PLANE) {
if (TEST_EQ_4V(texUnit->ObjectPlaneR, params))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->ObjectPlaneR, params);
}
else if (pname==GL_EYE_PLANE) {
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
if (TEST_EQ_4V(texUnit->EyePlaneR, tmp))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->EyePlaneR, tmp);
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
return;
}
break;
case GL_Q:
if (pname==GL_TEXTURE_GEN_MODE) {
GLenum mode = (GLenum) (GLint) *params;
GLbitfield bitq;
switch (mode) {
case GL_OBJECT_LINEAR:
bitq = TEXGEN_OBJ_LINEAR;
break;
case GL_EYE_LINEAR:
bitq = TEXGEN_EYE_LINEAR;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
return;
}
if (texUnit->GenModeQ == mode)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->GenModeQ = mode;
texUnit->_GenBitQ = bitq;
}
else if (pname==GL_OBJECT_PLANE) {
if (TEST_EQ_4V(texUnit->ObjectPlaneQ, params))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->ObjectPlaneQ, params);
}
else if (pname==GL_EYE_PLANE) {
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
if (TEST_EQ_4V(texUnit->EyePlaneQ, tmp))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->EyePlaneQ, tmp);
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
return;
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(coord)" );
return;
}
if (ctx->Driver.TexGen)
ctx->Driver.TexGen( ctx, coord, pname, params );
}
void GLAPIENTRY
_mesa_TexGeniv(GLenum coord, GLenum pname, const GLint *params )
{
GLfloat p[4];
p[0] = (GLfloat) params[0];
if (pname == GL_TEXTURE_GEN_MODE) {
p[1] = p[2] = p[3] = 0.0F;
}
else {
p[1] = (GLfloat) params[1];
p[2] = (GLfloat) params[2];
p[3] = (GLfloat) params[3];
}
_mesa_TexGenfv(coord, pname, p);
}
void GLAPIENTRY
_mesa_TexGend(GLenum coord, GLenum pname, GLdouble param )
{
GLfloat p = (GLfloat) param;
_mesa_TexGenfv( coord, pname, &p );
}
void GLAPIENTRY
_mesa_TexGendv(GLenum coord, GLenum pname, const GLdouble *params )
{
GLfloat p[4];
p[0] = (GLfloat) params[0];
if (pname == GL_TEXTURE_GEN_MODE) {
p[1] = p[2] = p[3] = 0.0F;
}
else {
p[1] = (GLfloat) params[1];
p[2] = (GLfloat) params[2];
p[3] = (GLfloat) params[3];
}
_mesa_TexGenfv( coord, pname, p );
}
void GLAPIENTRY
_mesa_TexGenf( GLenum coord, GLenum pname, GLfloat param )
{
_mesa_TexGenfv(coord, pname, &param);
}
void GLAPIENTRY
_mesa_TexGeni( GLenum coord, GLenum pname, GLint param )
{
_mesa_TexGeniv( coord, pname, &param );
}
void GLAPIENTRY
_mesa_GetTexGendv( GLenum coord, GLenum pname, GLdouble *params )
{
GET_CURRENT_CONTEXT(ctx);
GLuint tUnit = ctx->Texture.CurrentUnit;
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[tUnit];
ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (coord) {
case GL_S:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_DOUBLE(texUnit->GenModeS);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneS );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneS );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
return;
}
break;
case GL_T:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_DOUBLE(texUnit->GenModeT);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneT );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneT );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
return;
}
break;
case GL_R:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_DOUBLE(texUnit->GenModeR);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneR );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneR );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
return;
}
break;
case GL_Q:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_DOUBLE(texUnit->GenModeQ);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneQ );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneQ );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
return;
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(coord)" );
return;
}
}
void GLAPIENTRY
_mesa_GetTexGenfv( GLenum coord, GLenum pname, GLfloat *params )
{
GET_CURRENT_CONTEXT(ctx);
GLuint tUnit = ctx->Texture.CurrentUnit;
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[tUnit];
ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (coord) {
case GL_S:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_FLOAT(texUnit->GenModeS);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneS );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneS );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
return;
}
break;
case GL_T:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_FLOAT(texUnit->GenModeT);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneT );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneT );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
return;
}
break;
case GL_R:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_FLOAT(texUnit->GenModeR);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneR );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneR );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
return;
}
break;
case GL_Q:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_FLOAT(texUnit->GenModeQ);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneQ );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneQ );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
return;
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(coord)" );
return;
}
}
void GLAPIENTRY
_mesa_GetTexGeniv( GLenum coord, GLenum pname, GLint *params )
{
GET_CURRENT_CONTEXT(ctx);
GLuint tUnit = ctx->Texture.CurrentUnit;
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[tUnit];
ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (coord) {
case GL_S:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = texUnit->GenModeS;
}
else if (pname==GL_OBJECT_PLANE) {
params[0] = (GLint) texUnit->ObjectPlaneS[0];
params[1] = (GLint) texUnit->ObjectPlaneS[1];
params[2] = (GLint) texUnit->ObjectPlaneS[2];
params[3] = (GLint) texUnit->ObjectPlaneS[3];
}
else if (pname==GL_EYE_PLANE) {
params[0] = (GLint) texUnit->EyePlaneS[0];
params[1] = (GLint) texUnit->EyePlaneS[1];
params[2] = (GLint) texUnit->EyePlaneS[2];
params[3] = (GLint) texUnit->EyePlaneS[3];
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
return;
}
break;
case GL_T:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = texUnit->GenModeT;
}
else if (pname==GL_OBJECT_PLANE) {
params[0] = (GLint) texUnit->ObjectPlaneT[0];
params[1] = (GLint) texUnit->ObjectPlaneT[1];
params[2] = (GLint) texUnit->ObjectPlaneT[2];
params[3] = (GLint) texUnit->ObjectPlaneT[3];
}
else if (pname==GL_EYE_PLANE) {
params[0] = (GLint) texUnit->EyePlaneT[0];
params[1] = (GLint) texUnit->EyePlaneT[1];
params[2] = (GLint) texUnit->EyePlaneT[2];
params[3] = (GLint) texUnit->EyePlaneT[3];
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
return;
}
break;
case GL_R:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = texUnit->GenModeR;
}
else if (pname==GL_OBJECT_PLANE) {
params[0] = (GLint) texUnit->ObjectPlaneR[0];
params[1] = (GLint) texUnit->ObjectPlaneR[1];
params[2] = (GLint) texUnit->ObjectPlaneR[2];
params[3] = (GLint) texUnit->ObjectPlaneR[3];
}
else if (pname==GL_EYE_PLANE) {
params[0] = (GLint) texUnit->EyePlaneR[0];
params[1] = (GLint) texUnit->EyePlaneR[1];
params[2] = (GLint) texUnit->EyePlaneR[2];
params[3] = (GLint) texUnit->EyePlaneR[3];
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
return;
}
break;
case GL_Q:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = texUnit->GenModeQ;
}
else if (pname==GL_OBJECT_PLANE) {
params[0] = (GLint) texUnit->ObjectPlaneQ[0];
params[1] = (GLint) texUnit->ObjectPlaneQ[1];
params[2] = (GLint) texUnit->ObjectPlaneQ[2];
params[3] = (GLint) texUnit->ObjectPlaneQ[3];
}
else if (pname==GL_EYE_PLANE) {
params[0] = (GLint) texUnit->EyePlaneQ[0];
params[1] = (GLint) texUnit->EyePlaneQ[1];
params[2] = (GLint) texUnit->EyePlaneQ[2];
params[3] = (GLint) texUnit->EyePlaneQ[3];
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
return;
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(coord)" );
return;
}
}
#endif
/* GL_ARB_multitexture */
void GLAPIENTRY
_mesa_ActiveTextureARB( GLenum target )
{
GET_CURRENT_CONTEXT(ctx);
const GLuint texUnit = target - GL_TEXTURE0;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glActiveTexture %s\n",
_mesa_lookup_enum_by_nr(target));
/* Cater for texture unit 0 is first, therefore use >= */
if (texUnit >= ctx->Const.MaxTextureUnits) {
_mesa_error(ctx, GL_INVALID_ENUM, "glActiveTexture(target)");
return;
}
if (ctx->Texture.CurrentUnit == texUnit)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
ctx->Texture.CurrentUnit = texUnit;
if (ctx->Transform.MatrixMode == GL_TEXTURE) {
/* update current stack pointer */
ctx->CurrentStack = &ctx->TextureMatrixStack[texUnit];
}
if (ctx->Driver.ActiveTexture) {
(*ctx->Driver.ActiveTexture)( ctx, (GLuint) texUnit );
}
}
/* GL_ARB_multitexture */
void GLAPIENTRY
_mesa_ClientActiveTextureARB( GLenum target )
{
GET_CURRENT_CONTEXT(ctx);
GLuint texUnit = target - GL_TEXTURE0;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (texUnit > ctx->Const.MaxTextureUnits) {
_mesa_error(ctx, GL_INVALID_ENUM, "glClientActiveTexture(target)");
return;
}
FLUSH_VERTICES(ctx, _NEW_ARRAY);
ctx->Array.ActiveTexture = texUnit;
}
/**********************************************************************/
/* Pixel Texgen Extensions */
/**********************************************************************/
void GLAPIENTRY
_mesa_PixelTexGenSGIX(GLenum mode)
{
GLenum newRgbSource, newAlphaSource;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
switch (mode) {
case GL_NONE:
newRgbSource = GL_PIXEL_GROUP_COLOR_SGIS;
newAlphaSource = GL_PIXEL_GROUP_COLOR_SGIS;
break;
case GL_ALPHA:
newRgbSource = GL_PIXEL_GROUP_COLOR_SGIS;
newAlphaSource = GL_CURRENT_RASTER_COLOR;
break;
case GL_RGB:
newRgbSource = GL_CURRENT_RASTER_COLOR;
newAlphaSource = GL_PIXEL_GROUP_COLOR_SGIS;
break;
case GL_RGBA:
newRgbSource = GL_CURRENT_RASTER_COLOR;
newAlphaSource = GL_CURRENT_RASTER_COLOR;
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glPixelTexGenSGIX(mode)");
return;
}
if (newRgbSource == ctx->Pixel.FragmentRgbSource &&
newAlphaSource == ctx->Pixel.FragmentAlphaSource)
return;
FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.FragmentRgbSource = newRgbSource;
ctx->Pixel.FragmentAlphaSource = newAlphaSource;
}
void GLAPIENTRY
_mesa_PixelTexGenParameterfSGIS(GLenum target, GLfloat value)
{
_mesa_PixelTexGenParameteriSGIS(target, (GLint) value);
}
void GLAPIENTRY
_mesa_PixelTexGenParameterfvSGIS(GLenum target, const GLfloat *value)
{
_mesa_PixelTexGenParameteriSGIS(target, (GLint) *value);
}
void GLAPIENTRY
_mesa_PixelTexGenParameteriSGIS(GLenum target, GLint value)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (value != GL_CURRENT_RASTER_COLOR && value != GL_PIXEL_GROUP_COLOR_SGIS) {
_mesa_error(ctx, GL_INVALID_ENUM, "glPixelTexGenParameterSGIS(value)");
return;
}
switch (target) {
case GL_PIXEL_FRAGMENT_RGB_SOURCE_SGIS:
if (ctx->Pixel.FragmentRgbSource == (GLenum) value)
return;
FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.FragmentRgbSource = (GLenum) value;
break;
case GL_PIXEL_FRAGMENT_ALPHA_SOURCE_SGIS:
if (ctx->Pixel.FragmentAlphaSource == (GLenum) value)
return;
FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->Pixel.FragmentAlphaSource = (GLenum) value;
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glPixelTexGenParameterSGIS(target)");
return;
}
}
void GLAPIENTRY
_mesa_PixelTexGenParameterivSGIS(GLenum target, const GLint *value)
{
_mesa_PixelTexGenParameteriSGIS(target, *value);
}
void GLAPIENTRY
_mesa_GetPixelTexGenParameterfvSGIS(GLenum target, GLfloat *value)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target == GL_PIXEL_FRAGMENT_RGB_SOURCE_SGIS) {
*value = (GLfloat) ctx->Pixel.FragmentRgbSource;
}
else if (target == GL_PIXEL_FRAGMENT_ALPHA_SOURCE_SGIS) {
*value = (GLfloat) ctx->Pixel.FragmentAlphaSource;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelTexGenParameterfvSGIS(target)");
}
}
void GLAPIENTRY
_mesa_GetPixelTexGenParameterivSGIS(GLenum target, GLint *value)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (target == GL_PIXEL_FRAGMENT_RGB_SOURCE_SGIS) {
*value = (GLint) ctx->Pixel.FragmentRgbSource;
}
else if (target == GL_PIXEL_FRAGMENT_ALPHA_SOURCE_SGIS) {
*value = (GLint) ctx->Pixel.FragmentAlphaSource;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetPixelTexGenParameterivSGIS(target)");
}
}
/**********************************************************************/
/***** State management *****/
/**********************************************************************/
/**
* \note This routine refers to derived texture attribute values to
* compute the ENABLE_TEXMAT flags, but is only called on
* _NEW_TEXTURE_MATRIX. On changes to _NEW_TEXTURE, the ENABLE_TEXMAT
* flags are updated by _mesa_update_textures(), below.
*
* \param ctx GL context.
*/
static void
update_texture_matrices( GLcontext *ctx )
{
GLuint i;
ctx->Texture._TexMatEnabled = 0;
for (i=0; i < ctx->Const.MaxTextureUnits; i++) {
if (_math_matrix_is_dirty(ctx->TextureMatrixStack[i].Top)) {
_math_matrix_analyse( ctx->TextureMatrixStack[i].Top );
if (ctx->Texture.Unit[i]._ReallyEnabled &&
ctx->TextureMatrixStack[i].Top->type != MATRIX_IDENTITY)
ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(i);
if (ctx->Driver.TextureMatrix)
ctx->Driver.TextureMatrix( ctx, i, ctx->TextureMatrixStack[i].Top);
}
}
}
/**
* \note This routine refers to derived texture matrix values to
* compute the ENABLE_TEXMAT flags, but is only called on
* _NEW_TEXTURE. On changes to _NEW_TEXTURE_MATRIX, the ENABLE_TEXMAT
* flags are updated by _mesa_update_texture_matrices, above.
*
* \param ctx GL context.
*/
static void
update_texture_state( GLcontext *ctx )
{
GLuint unit;
ctx->NewState |= _NEW_TEXTURE; /* TODO: only set this if there are
* actual changes.
*/
ctx->Texture._EnabledUnits = 0;
ctx->Texture._GenFlags = 0;
ctx->Texture._TexMatEnabled = 0;
ctx->Texture._TexGenEnabled = 0;
/* Update texture unit state.
* XXX this loop should probably be broken into separate loops for
* texture coord units and texture image units.
*/
for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++) {
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
GLbitfield enableBits;
texUnit->_Current = NULL;
texUnit->_ReallyEnabled = 0;
texUnit->_GenFlags = 0;
/* Get the bitmask of texture enables */
if (ctx->FragmentProgram._Enabled) {
enableBits = ctx->FragmentProgram.Current->TexturesUsed[unit];
}
else {
if (!texUnit->Enabled)
continue;
enableBits = texUnit->Enabled;
}
/* Look for the highest-priority texture target that's enabled and
* complete. That's the one we'll use for texturing. If we're using
* a fragment program we're guaranteed that bitcount(enabledBits) <= 1.
*/
if (enableBits & TEXTURE_CUBE_BIT) {
struct gl_texture_object *texObj = texUnit->CurrentCubeMap;
if (!texObj->Complete) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (texObj->Complete) {
texUnit->_ReallyEnabled = TEXTURE_CUBE_BIT;
texUnit->_Current = texObj;
}
}
if (!texUnit->_ReallyEnabled && (enableBits & TEXTURE_3D_BIT)) {
struct gl_texture_object *texObj = texUnit->Current3D;
if (!texObj->Complete) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (texObj->Complete) {
texUnit->_ReallyEnabled = TEXTURE_3D_BIT;
texUnit->_Current = texObj;
}
}
if (!texUnit->_ReallyEnabled && (enableBits & TEXTURE_RECT_BIT)) {
struct gl_texture_object *texObj = texUnit->CurrentRect;
if (!texObj->Complete) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (texObj->Complete) {
texUnit->_ReallyEnabled = TEXTURE_RECT_BIT;
texUnit->_Current = texObj;
}
}
if (!texUnit->_ReallyEnabled && (enableBits & TEXTURE_2D_BIT)) {
struct gl_texture_object *texObj = texUnit->Current2D;
if (!texObj->Complete) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (texObj->Complete) {
texUnit->_ReallyEnabled = TEXTURE_2D_BIT;
texUnit->_Current = texObj;
}
}
if (!texUnit->_ReallyEnabled && (enableBits & TEXTURE_1D_BIT)) {
struct gl_texture_object *texObj = texUnit->Current1D;
if (!texObj->Complete) {
_mesa_test_texobj_completeness(ctx, texObj);
}
if (texObj->Complete) {
texUnit->_ReallyEnabled = TEXTURE_1D_BIT;
texUnit->_Current = texObj;
}
}
if (!texUnit->_ReallyEnabled) {
continue;
}
if (texUnit->_ReallyEnabled)
ctx->Texture._EnabledUnits |= (1 << unit);
if (texUnit->EnvMode == GL_COMBINE) {
texUnit->_CurrentCombine = & texUnit->Combine;
}
else {
GLenum format = texUnit->_Current->Image[0][0]->_BaseFormat;
if (format == GL_COLOR_INDEX) {
format = GL_RGBA; /* a bit of a hack */
}
else if (format == GL_DEPTH_COMPONENT
|| format == GL_DEPTH_STENCIL_EXT) {
format = texUnit->_Current->DepthMode;
}
calculate_derived_texenv(&texUnit->_EnvMode, texUnit->EnvMode, format);
texUnit->_CurrentCombine = & texUnit->_EnvMode;
}
switch (texUnit->_CurrentCombine->ModeRGB) {
case GL_REPLACE:
texUnit->_CurrentCombine->_NumArgsRGB = 1;
break;
case GL_MODULATE:
case GL_ADD:
case GL_ADD_SIGNED:
case GL_SUBTRACT:
case GL_DOT3_RGB:
case GL_DOT3_RGBA:
case GL_DOT3_RGB_EXT:
case GL_DOT3_RGBA_EXT:
texUnit->_CurrentCombine->_NumArgsRGB = 2;
break;
case GL_INTERPOLATE:
case GL_MODULATE_ADD_ATI:
case GL_MODULATE_SIGNED_ADD_ATI:
case GL_MODULATE_SUBTRACT_ATI:
texUnit->_CurrentCombine->_NumArgsRGB = 3;
break;
default:
texUnit->_CurrentCombine->_NumArgsRGB = 0;
_mesa_problem(ctx, "invalid RGB combine mode in update_texture_state");
return;
}
switch (texUnit->_CurrentCombine->ModeA) {
case GL_REPLACE:
texUnit->_CurrentCombine->_NumArgsA = 1;
break;
case GL_MODULATE:
case GL_ADD:
case GL_ADD_SIGNED:
case GL_SUBTRACT:
texUnit->_CurrentCombine->_NumArgsA = 2;
break;
case GL_INTERPOLATE:
case GL_MODULATE_ADD_ATI:
case GL_MODULATE_SIGNED_ADD_ATI:
case GL_MODULATE_SUBTRACT_ATI:
texUnit->_CurrentCombine->_NumArgsA = 3;
break;
default:
texUnit->_CurrentCombine->_NumArgsA = 0;
_mesa_problem(ctx, "invalid Alpha combine mode in update_texture_state");
break;
}
if (texUnit->TexGenEnabled) {
if (texUnit->TexGenEnabled & S_BIT) {
texUnit->_GenFlags |= texUnit->_GenBitS;
}
if (texUnit->TexGenEnabled & T_BIT) {
texUnit->_GenFlags |= texUnit->_GenBitT;
}
if (texUnit->TexGenEnabled & Q_BIT) {
texUnit->_GenFlags |= texUnit->_GenBitQ;
}
if (texUnit->TexGenEnabled & R_BIT) {
texUnit->_GenFlags |= texUnit->_GenBitR;
}
ctx->Texture._TexGenEnabled |= ENABLE_TEXGEN(unit);
ctx->Texture._GenFlags |= texUnit->_GenFlags;
}
if (ctx->TextureMatrixStack[unit].Top->type != MATRIX_IDENTITY)
ctx->Texture._TexMatEnabled |= ENABLE_TEXMAT(unit);
}
ctx->Texture._EnabledCoordUnits = ctx->Texture._EnabledUnits;
/* Fragment programs may need texture coordinates but not the
* corresponding texture images.
*/
if (ctx->FragmentProgram._Enabled) {
ctx->Texture._EnabledCoordUnits |=
(ctx->FragmentProgram.Current->Base.InputsRead >> FRAG_ATTRIB_TEX0);
}
}
void _mesa_update_texture( GLcontext *ctx, GLuint new_state )
{
if (new_state & _NEW_TEXTURE_MATRIX)
update_texture_matrices( ctx );
if (new_state & (_NEW_TEXTURE | _NEW_PROGRAM))
update_texture_state( ctx );
}
/**********************************************************************/
/***** Initialization *****/
/**********************************************************************/
/**
* Allocate the proxy textures for the given context.
*
* \param ctx the context to allocate proxies for.
*
* \return GL_TRUE on success, or GL_FALSE on failure
*
* If run out of memory part way through the allocations, clean up and return
* GL_FALSE.
*/
static GLboolean
alloc_proxy_textures( GLcontext *ctx )
{
ctx->Texture.Proxy1D = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_1D);
if (!ctx->Texture.Proxy1D)
goto cleanup;
ctx->Texture.Proxy2D = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_2D);
if (!ctx->Texture.Proxy2D)
goto cleanup;
ctx->Texture.Proxy3D = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_3D);
if (!ctx->Texture.Proxy3D)
goto cleanup;
ctx->Texture.ProxyCubeMap = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_CUBE_MAP_ARB);
if (!ctx->Texture.ProxyCubeMap)
goto cleanup;
ctx->Texture.ProxyRect = (*ctx->Driver.NewTextureObject)(ctx, 0, GL_TEXTURE_RECTANGLE_NV);
if (!ctx->Texture.ProxyRect)
goto cleanup;
return GL_TRUE;
cleanup:
if (ctx->Texture.Proxy1D)
(ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy1D);
if (ctx->Texture.Proxy2D)
(ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy2D);
if (ctx->Texture.Proxy3D)
(ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy3D);
if (ctx->Texture.ProxyCubeMap)
(ctx->Driver.DeleteTexture)(ctx, ctx->Texture.ProxyCubeMap);
if (ctx->Texture.ProxyRect)
(ctx->Driver.DeleteTexture)(ctx, ctx->Texture.ProxyRect);
return GL_FALSE;
}
/**
* Initialize a texture unit.
*
* \param ctx GL context.
* \param unit texture unit number to be initialized.
*/
static void
init_texture_unit( GLcontext *ctx, GLuint unit )
{
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
texUnit->EnvMode = GL_MODULATE;
ASSIGN_4V( texUnit->EnvColor, 0.0, 0.0, 0.0, 0.0 );
texUnit->Combine = default_combine_state;
texUnit->_EnvMode = default_combine_state;
texUnit->_CurrentCombine = & texUnit->_EnvMode;
texUnit->TexGenEnabled = 0;
texUnit->GenModeS = GL_EYE_LINEAR;
texUnit->GenModeT = GL_EYE_LINEAR;
texUnit->GenModeR = GL_EYE_LINEAR;
texUnit->GenModeQ = GL_EYE_LINEAR;
texUnit->_GenBitS = TEXGEN_EYE_LINEAR;
texUnit->_GenBitT = TEXGEN_EYE_LINEAR;
texUnit->_GenBitR = TEXGEN_EYE_LINEAR;
texUnit->_GenBitQ = TEXGEN_EYE_LINEAR;
/* Yes, these plane coefficients are correct! */
ASSIGN_4V( texUnit->ObjectPlaneS, 1.0, 0.0, 0.0, 0.0 );
ASSIGN_4V( texUnit->ObjectPlaneT, 0.0, 1.0, 0.0, 0.0 );
ASSIGN_4V( texUnit->ObjectPlaneR, 0.0, 0.0, 0.0, 0.0 );
ASSIGN_4V( texUnit->ObjectPlaneQ, 0.0, 0.0, 0.0, 0.0 );
ASSIGN_4V( texUnit->EyePlaneS, 1.0, 0.0, 0.0, 0.0 );
ASSIGN_4V( texUnit->EyePlaneT, 0.0, 1.0, 0.0, 0.0 );
ASSIGN_4V( texUnit->EyePlaneR, 0.0, 0.0, 0.0, 0.0 );
ASSIGN_4V( texUnit->EyePlaneQ, 0.0, 0.0, 0.0, 0.0 );
texUnit->Current1D = ctx->Shared->Default1D;
texUnit->Current2D = ctx->Shared->Default2D;
texUnit->Current3D = ctx->Shared->Default3D;
texUnit->CurrentCubeMap = ctx->Shared->DefaultCubeMap;
texUnit->CurrentRect = ctx->Shared->DefaultRect;
}
/**
* Initialize texture state for the given context.
*/
GLboolean
_mesa_init_texture(GLcontext *ctx)
{
GLuint i;
assert(MAX_TEXTURE_LEVELS >= MAX_3D_TEXTURE_LEVELS);
assert(MAX_TEXTURE_LEVELS >= MAX_CUBE_TEXTURE_LEVELS);
/* Effectively bind the default textures to all texture units */
ctx->Shared->Default1D->RefCount += MAX_TEXTURE_UNITS;
ctx->Shared->Default2D->RefCount += MAX_TEXTURE_UNITS;
ctx->Shared->Default3D->RefCount += MAX_TEXTURE_UNITS;
ctx->Shared->DefaultCubeMap->RefCount += MAX_TEXTURE_UNITS;
ctx->Shared->DefaultRect->RefCount += MAX_TEXTURE_UNITS;
/* Texture group */
ctx->Texture.CurrentUnit = 0; /* multitexture */
ctx->Texture._EnabledUnits = 0;
for (i=0; i<MAX_TEXTURE_UNITS; i++)
init_texture_unit( ctx, i );
ctx->Texture.SharedPalette = GL_FALSE;
_mesa_init_colortable(&ctx->Texture.Palette);
/* Allocate proxy textures */
if (!alloc_proxy_textures( ctx ))
return GL_FALSE;
return GL_TRUE;
}
/**
* Free dynamically-allocted texture data attached to the given context.
*/
void
_mesa_free_texture_data(GLcontext *ctx)
{
GLuint i;
/* Free proxy texture objects */
(ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy1D );
(ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy2D );
(ctx->Driver.DeleteTexture)(ctx, ctx->Texture.Proxy3D );
(ctx->Driver.DeleteTexture)(ctx, ctx->Texture.ProxyCubeMap );
(ctx->Driver.DeleteTexture)(ctx, ctx->Texture.ProxyRect );
for (i = 0; i < MAX_TEXTURE_IMAGE_UNITS; i++)
_mesa_free_colortable_data( &ctx->Texture.Unit[i].ColorTable );
_mesa_TexEnvProgramCacheDestroy( ctx );
}