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authorBrian Paul <brian.paul@tungstengraphics.com>2008-06-11 19:58:30 -0600
committerBrian Paul <brian.paul@tungstengraphics.com>2008-06-11 20:17:08 -0600
commit7ecac78ab53016ae3db3dd601b187cb050037463 (patch)
treeacec72a43c3ae28344c025af8b1424ef7434dc91 /src/mesa/main/texstate.c
parent27049189d6221fefe43eb55846efaa51742dcdf4 (diff)
mesa: refactor: move glTexEnv-related functions into new texenv.c file
Diffstat (limited to 'src/mesa/main/texstate.c')
-rw-r--r--src/mesa/main/texstate.c823
1 files changed, 0 insertions, 823 deletions
diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c
index 8140787a7b..448fc53912 100644
--- a/src/mesa/main/texstate.c
+++ b/src/mesa/main/texstate.c
@@ -321,829 +321,6 @@ calculate_derived_texenv( struct gl_tex_env_combine_state *state,
}
-void GLAPIENTRY
-_mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param )
-{
- GLuint maxUnit;
- GET_CURRENT_CONTEXT(ctx);
- struct gl_texture_unit *texUnit;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
- ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
- if (ctx->Texture.CurrentUnit >= maxUnit) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glTexEnvfv(current unit)");
- return;
- }
-
- texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-
-#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:
- {
- GLenum mode = (GLenum) (GLint) *param;
- if (mode == GL_REPLACE_EXT)
- mode = GL_REPLACE;
- 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 )
-{
- GLuint maxUnit;
- const struct gl_texture_unit *texUnit;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
- ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
- if (ctx->Texture.CurrentUnit >= maxUnit) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnvfv(current unit)");
- return;
- }
-
- texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-
- 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:
- case GL_SOURCE1_RGB:
- case GL_SOURCE2_RGB:
- if (ctx->Extensions.EXT_texture_env_combine ||
- ctx->Extensions.ARB_texture_env_combine) {
- const unsigned rgb_idx = pname - GL_SOURCE0_RGB;
- *params = (GLfloat) texUnit->Combine.SourceRGB[rgb_idx];
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
- }
- 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 unsigned alpha_idx = pname - GL_SOURCE0_ALPHA;
- *params = (GLfloat) texUnit->Combine.SourceA[alpha_idx];
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
- }
- break;
- case GL_OPERAND0_RGB:
- case GL_OPERAND1_RGB:
- case GL_OPERAND2_RGB:
- if (ctx->Extensions.EXT_texture_env_combine ||
- ctx->Extensions.ARB_texture_env_combine) {
- const unsigned op_rgb = pname - GL_OPERAND0_RGB;
- *params = (GLfloat) texUnit->Combine.OperandRGB[op_rgb];
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)");
- }
- break;
- case GL_OPERAND0_ALPHA:
- case GL_OPERAND1_ALPHA:
- case GL_OPERAND2_ALPHA:
- if (ctx->Extensions.EXT_texture_env_combine ||
- ctx->Extensions.ARB_texture_env_combine) {
- const unsigned op_alpha = pname - GL_OPERAND0_ALPHA;
- *params = (GLfloat) texUnit->Combine.OperandA[op_alpha];
- }
- 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 )
-{
- GLuint maxUnit;
- const struct gl_texture_unit *texUnit;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- maxUnit = (target == GL_POINT_SPRITE_NV && pname == GL_COORD_REPLACE_NV)
- ? ctx->Const.MaxTextureCoordUnits : ctx->Const.MaxTextureImageUnits;
- if (ctx->Texture.CurrentUnit >= maxUnit) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexEnviv(current unit)");
- return;
- }
-
- texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
-
- 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:
- case GL_SOURCE1_RGB:
- case GL_SOURCE2_RGB:
- if (ctx->Extensions.EXT_texture_env_combine ||
- ctx->Extensions.ARB_texture_env_combine) {
- const unsigned rgb_idx = pname - GL_SOURCE0_RGB;
- *params = (GLint) texUnit->Combine.SourceRGB[rgb_idx];
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
- }
- 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 unsigned alpha_idx = pname - GL_SOURCE0_ALPHA;
- *params = (GLint) texUnit->Combine.SourceA[alpha_idx];
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
- }
- break;
- case GL_OPERAND0_RGB:
- case GL_OPERAND1_RGB:
- case GL_OPERAND2_RGB:
- if (ctx->Extensions.EXT_texture_env_combine ||
- ctx->Extensions.ARB_texture_env_combine) {
- const unsigned op_rgb = pname - GL_OPERAND0_RGB;
- *params = (GLint) texUnit->Combine.OperandRGB[op_rgb];
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnviv(pname)");
- }
- break;
- case GL_OPERAND0_ALPHA:
- case GL_OPERAND1_ALPHA:
- case GL_OPERAND2_ALPHA:
- if (ctx->Extensions.EXT_texture_env_combine ||
- ctx->Extensions.ARB_texture_env_combine) {
- const unsigned op_alpha = pname - GL_OPERAND0_ALPHA;
- *params = (GLint) texUnit->Combine.OperandA[op_alpha];
- }
- 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 */
/**********************************************************************/