From 7ecac78ab53016ae3db3dd601b187cb050037463 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Wed, 11 Jun 2008 19:58:30 -0600 Subject: mesa: refactor: move glTexEnv-related functions into new texenv.c file --- src/mesa/main/texstate.c | 823 ----------------------------------------------- 1 file changed, 823 deletions(-) (limited to 'src/mesa/main/texstate.c') 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, ¶m ); -} - - - -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 */ /**********************************************************************/ -- cgit v1.2.3