diff options
Diffstat (limited to 'src/mesa/main/texenv.c')
| -rw-r--r-- | src/mesa/main/texenv.c | 721 |
1 files changed, 373 insertions, 348 deletions
diff --git a/src/mesa/main/texenv.c b/src/mesa/main/texenv.c index e072cea136e..2f38ee8852c 100644 --- a/src/mesa/main/texenv.c +++ b/src/mesa/main/texenv.c @@ -1,8 +1,9 @@ /* * Mesa 3-D graphics library - * Version: 7.1 + * Version: 7.5 * * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 2009 VMware, Inc. 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"), @@ -37,6 +38,370 @@ #include "math/m_xform.h" +#define TE_ERROR(errCode, msg, value) \ + _mesa_error(ctx, errCode, msg, _mesa_lookup_enum_by_nr(value)); + + +/** Set texture env mode */ +static void +set_env_mode(GLcontext *ctx, + struct gl_texture_unit *texUnit, + GLenum mode) +{ + GLboolean legal; + + if (texUnit->EnvMode == mode) + return; + + switch (mode) { + case GL_MODULATE: + case GL_BLEND: + case GL_DECAL: + case GL_REPLACE: + legal = GL_TRUE; + break; + case GL_REPLACE_EXT: + mode = GL_REPLACE; /* GL_REPLACE_EXT != GL_REPLACE */ + legal = GL_TRUE; + break; + case GL_ADD: + legal = ctx->Extensions.EXT_texture_env_add; + break; + case GL_COMBINE: + legal = (ctx->Extensions.EXT_texture_env_combine || + ctx->Extensions.ARB_texture_env_combine); + break; + case GL_COMBINE4_NV: + legal = ctx->Extensions.NV_texture_env_combine4; + break; + default: + legal = GL_FALSE; + } + + if (legal) { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texUnit->EnvMode = mode; + } + else { + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode); + } +} + + +static void +set_env_color(GLcontext *ctx, + struct gl_texture_unit *texUnit, + const GLfloat *color) +{ + GLfloat tmp[4]; + tmp[0] = CLAMP(color[0], 0.0F, 1.0F); + tmp[1] = CLAMP(color[1], 0.0F, 1.0F); + tmp[2] = CLAMP(color[2], 0.0F, 1.0F); + tmp[3] = CLAMP(color[3], 0.0F, 1.0F); + if (TEST_EQ_4V(tmp, texUnit->EnvColor)) + return; + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + COPY_4FV(texUnit->EnvColor, tmp); +} + + +/** Set an RGB or A combiner mode/function */ +static void +set_combiner_mode(GLcontext *ctx, + struct gl_texture_unit *texUnit, + GLenum pname, GLenum mode) +{ + GLboolean legal; + + if (!ctx->Extensions.EXT_texture_env_combine && + !ctx->Extensions.ARB_texture_env_combine) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)"); + return; + } + + switch (mode) { + case GL_REPLACE: + case GL_MODULATE: + case GL_ADD: + case GL_ADD_SIGNED: + case GL_INTERPOLATE: + legal = GL_TRUE; + break; + case GL_SUBTRACT: + legal = ctx->Extensions.ARB_texture_env_combine; + break; + case GL_DOT3_RGB_EXT: + case GL_DOT3_RGBA_EXT: + legal = (ctx->Extensions.EXT_texture_env_dot3 && + pname == GL_COMBINE_RGB); + break; + case GL_DOT3_RGB: + case GL_DOT3_RGBA: + legal = (ctx->Extensions.ARB_texture_env_dot3 && + pname == GL_COMBINE_RGB); + break; + case GL_MODULATE_ADD_ATI: + case GL_MODULATE_SIGNED_ADD_ATI: + case GL_MODULATE_SUBTRACT_ATI: + legal =ctx->Extensions.ATI_texture_env_combine3; + break; + default: + legal = GL_FALSE; + } + + if (!legal) { + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", mode); + return; + } + + switch (pname) { + case GL_COMBINE_RGB: + if (texUnit->Combine.ModeRGB == mode) + return; + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texUnit->Combine.ModeRGB = mode; + break; + + case GL_COMBINE_ALPHA: + if (texUnit->Combine.ModeA == mode) + return; + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texUnit->Combine.ModeA = mode; + break; + default: + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); + } +} + + + +/** Set an RGB or A combiner source term */ +static void +set_combiner_source(GLcontext *ctx, + struct gl_texture_unit *texUnit, + GLenum pname, GLenum param) +{ + GLuint src; + GLboolean alpha, legal; + + if (!ctx->Extensions.EXT_texture_env_combine && + !ctx->Extensions.ARB_texture_env_combine) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)"); + return; + } + + /* + * Translate pname to (src, alpha). + */ + switch (pname) { + case GL_SOURCE0_RGB: + src = 0; + alpha = GL_FALSE; + break; + case GL_SOURCE1_RGB: + src = 1; + alpha = GL_FALSE; + break; + case GL_SOURCE2_RGB: + src = 2; + alpha = GL_FALSE; + break; + case GL_SOURCE0_ALPHA: + src = 0; + alpha = GL_TRUE; + break; + case GL_SOURCE1_ALPHA: + src = 1; + alpha = GL_TRUE; + break; + case GL_SOURCE2_ALPHA: + src = 2; + alpha = GL_TRUE; + break; + default: + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); + return; + } + + /* + * Error-check param (the source term) + */ + switch (param) { + case GL_TEXTURE: + case GL_CONSTANT: + case GL_PRIMARY_COLOR: + case GL_PREVIOUS: + legal = GL_TRUE; + break; + case GL_TEXTURE0: + case GL_TEXTURE1: + case GL_TEXTURE2: + case GL_TEXTURE3: + case GL_TEXTURE4: + case GL_TEXTURE5: + case GL_TEXTURE6: + case GL_TEXTURE7: + legal = (ctx->Extensions.ARB_texture_env_crossbar && + param - GL_TEXTURE0 < ctx->Const.MaxTextureUnits); + break; + case GL_ZERO: + case GL_ONE: + legal = ctx->Extensions.ATI_texture_env_combine3; + break; + default: + legal = GL_FALSE; + } + + if (!legal) { + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", param); + return; + } + + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + + assert(src < 4); + if (alpha) + texUnit->Combine.SourceA[src] = param; + else + texUnit->Combine.SourceRGB[src] = param; +} + + +/** Set an RGB or A combiner operand term */ +static void +set_combiner_operand(GLcontext *ctx, + struct gl_texture_unit *texUnit, + GLenum pname, GLenum param) +{ + GLuint op; + GLboolean alpha, legal; + + if (!ctx->Extensions.EXT_texture_env_combine && + !ctx->Extensions.ARB_texture_env_combine) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)"); + return; + } + + switch (pname) { + case GL_OPERAND0_RGB: + op = 0; + alpha = GL_FALSE; + break; + case GL_OPERAND1_RGB: + op = 1; + alpha = GL_FALSE; + break; + case GL_OPERAND2_RGB: + if (ctx->Extensions.ARB_texture_env_combine) { + op = 2; + alpha = GL_FALSE; + } + else { + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); + return; + } + break; + case GL_OPERAND0_ALPHA: + op = 0; + alpha = GL_TRUE; + break; + case GL_OPERAND1_ALPHA: + op = 1; + alpha = GL_TRUE; + break; + case GL_OPERAND2_ALPHA: + if (ctx->Extensions.ARB_texture_env_combine) { + op = 2; + alpha = GL_TRUE; + } + else { + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); + return; + } + break; + default: + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); + return; + } + + /* + * Error-check param (the source operand) + */ + switch (param) { + case GL_SRC_COLOR: + case GL_ONE_MINUS_SRC_COLOR: + legal = !alpha; + break; + case GL_SRC_ALPHA: + case GL_ONE_MINUS_SRC_ALPHA: + legal = GL_TRUE; + break; + default: + legal = GL_FALSE; + } + + if (!legal) { + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(param=%s)", param); + return; + } + + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + + if (alpha) + texUnit->Combine.OperandA[op] = param; + else + texUnit->Combine.OperandRGB[op] = param; +} + + +static void +set_combiner_scale(GLcontext *ctx, + struct gl_texture_unit *texUnit, + GLenum pname, GLfloat scale) +{ + GLuint shift; + + if (!ctx->Extensions.EXT_texture_env_combine && + !ctx->Extensions.ARB_texture_env_combine) { + _mesa_error(ctx, GL_INVALID_ENUM, "glTexEnv(pname)"); + return; + } + + if (scale == 1.0F) { + shift = 0; + } + else if (scale == 2.0F) { + shift = 1; + } + else if (scale == 4.0F) { + shift = 2; + } + else { + _mesa_error( ctx, GL_INVALID_VALUE, + "glTexEnv(GL_RGB_SCALE not 1, 2 or 4)" ); + return; + } + + switch (pname) { + case GL_RGB_SCALE: + if (texUnit->Combine.ScaleShiftRGB == shift) + return; + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texUnit->Combine.ScaleShiftRGB = shift; + break; + case GL_ALPHA_SCALE: + if (texUnit->Combine.ScaleShiftA == shift) + return; + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texUnit->Combine.ScaleShiftA = shift; + break; + default: + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); + return; + } +} + + void GLAPIENTRY _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param ) @@ -55,377 +420,37 @@ _mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param ) 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; - } - } + set_env_mode(ctx, texUnit, (GLenum) (GLint) param[0]); 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); - } + set_env_color(ctx, texUnit, param); 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; - } + set_combiner_mode(ctx, texUnit, pname, (GLenum) (GLint) param[0]); 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; - } + set_combiner_source(ctx, texUnit, pname, (GLenum) (GLint) param[0]); 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_OPERAND2_RGB: 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; - } + set_combiner_operand(ctx, texUnit, pname, (GLenum) (GLint) param[0]); 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; - } + set_combiner_scale(ctx, texUnit, pname, param[0]); break; default: _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname)" ); |