From 2039567395da75a3ae318fb82738cdcf2caa05a1 Mon Sep 17 00:00:00 2001 From: marha Date: Wed, 30 Mar 2011 06:43:04 +0000 Subject: mesa git update 30 Mar 2011 --- mesalib/src/mesa/main/texenv.c | 2081 ++++++++++++++++++++-------------------- 1 file changed, 1043 insertions(+), 1038 deletions(-) (limited to 'mesalib/src/mesa/main/texenv.c') diff --git a/mesalib/src/mesa/main/texenv.c b/mesalib/src/mesa/main/texenv.c index 9caca7c11..9228e354a 100644 --- a/mesalib/src/mesa/main/texenv.c +++ b/mesalib/src/mesa/main/texenv.c @@ -1,1038 +1,1043 @@ -/* - * Mesa 3-D graphics library - * 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"), - * 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 texenv.c - * - * glTexEnv-related functions - */ - - -#include "main/glheader.h" -#include "main/context.h" -#include "main/enums.h" -#include "main/macros.h" -#include "main/mtypes.h" -#include "main/texenv.h" -#include "main/texstate.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(struct gl_context *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(struct gl_context *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(struct gl_context *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; - case GL_BUMP_ENVMAP_ATI: - legal = (ctx->Extensions.ATI_envmap_bumpmap && - pname == GL_COMBINE_RGB); - 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(struct gl_context *ctx, - struct gl_texture_unit *texUnit, - GLenum pname, GLenum param) -{ - GLuint term; - 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 (term, alpha). - * - * The enums were given sequential values for a reason. - */ - switch (pname) { - case GL_SOURCE0_RGB: - case GL_SOURCE1_RGB: - case GL_SOURCE2_RGB: - case GL_SOURCE3_RGB_NV: - term = pname - GL_SOURCE0_RGB; - alpha = GL_FALSE; - break; - case GL_SOURCE0_ALPHA: - case GL_SOURCE1_ALPHA: - case GL_SOURCE2_ALPHA: - case GL_SOURCE3_ALPHA_NV: - term = pname - GL_SOURCE0_ALPHA; - alpha = GL_TRUE; - break; - default: - TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); - return; - } - - if ((term == 3) && !ctx->Extensions.NV_texture_env_combine4) { - TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); - return; - } - - assert(term < MAX_COMBINER_TERMS); - - /* - * 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: - legal = (ctx->Extensions.ATI_texture_env_combine3 || - ctx->Extensions.NV_texture_env_combine4); - break; - 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); - - if (alpha) - texUnit->Combine.SourceA[term] = param; - else - texUnit->Combine.SourceRGB[term] = param; -} - - -/** Set an RGB or A combiner operand term */ -static void -set_combiner_operand(struct gl_context *ctx, - struct gl_texture_unit *texUnit, - GLenum pname, GLenum param) -{ - GLuint term; - 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; - } - - /* The enums were given sequential values for a reason. - */ - switch (pname) { - case GL_OPERAND0_RGB: - case GL_OPERAND1_RGB: - case GL_OPERAND2_RGB: - case GL_OPERAND3_RGB_NV: - term = pname - GL_OPERAND0_RGB; - alpha = GL_FALSE; - break; - case GL_OPERAND0_ALPHA: - case GL_OPERAND1_ALPHA: - case GL_OPERAND2_ALPHA: - case GL_OPERAND3_ALPHA_NV: - term = pname - GL_OPERAND0_ALPHA; - alpha = GL_TRUE; - break; - default: - TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); - return; - } - - if ((term == 3) && !ctx->Extensions.NV_texture_env_combine4) { - TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); - return; - } - - assert(term < MAX_COMBINER_TERMS); - - /* - * Error-check param (the source operand) - */ - switch (param) { - case GL_SRC_COLOR: - case GL_ONE_MINUS_SRC_COLOR: - /* The color input can only be used with GL_OPERAND[01]_RGB in the EXT - * version. In the ARB and NV versions they can be used for any RGB - * operand. - */ - legal = !alpha - && ((term < 2) || ctx->Extensions.ARB_texture_env_combine - || ctx->Extensions.NV_texture_env_combine4); - break; - case GL_ONE_MINUS_SRC_ALPHA: - /* GL_ONE_MINUS_SRC_ALPHA can only be used with - * GL_OPERAND[01]_(RGB|ALPHA) in the EXT version. In the ARB and NV - * versions it can be used for any operand. - */ - legal = (term < 2) || ctx->Extensions.ARB_texture_env_combine - || ctx->Extensions.NV_texture_env_combine4; - break; - case GL_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[term] = param; - else - texUnit->Combine.OperandRGB[term] = param; -} - - -static void -set_combiner_scale(struct gl_context *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); - } -} - - - -void GLAPIENTRY -_mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param ) -{ - const GLint iparam0 = (GLint) param[0]; - struct gl_texture_unit *texUnit; - GLuint maxUnit; - - 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, "glTexEnvfv(current unit)"); - return; - } - - texUnit = _mesa_get_current_tex_unit(ctx); - - if (target == GL_TEXTURE_ENV) { - switch (pname) { - case GL_TEXTURE_ENV_MODE: - set_env_mode(ctx, texUnit, (GLenum) iparam0); - break; - case GL_TEXTURE_ENV_COLOR: - set_env_color(ctx, texUnit, param); - break; - case GL_COMBINE_RGB: - case GL_COMBINE_ALPHA: - set_combiner_mode(ctx, texUnit, pname, (GLenum) iparam0); - break; - case GL_SOURCE0_RGB: - case GL_SOURCE1_RGB: - case GL_SOURCE2_RGB: - case GL_SOURCE3_RGB_NV: - case GL_SOURCE0_ALPHA: - case GL_SOURCE1_ALPHA: - case GL_SOURCE2_ALPHA: - case GL_SOURCE3_ALPHA_NV: - set_combiner_source(ctx, texUnit, pname, (GLenum) iparam0); - break; - case GL_OPERAND0_RGB: - case GL_OPERAND1_RGB: - case GL_OPERAND2_RGB: - case GL_OPERAND3_RGB_NV: - case GL_OPERAND0_ALPHA: - case GL_OPERAND1_ALPHA: - case GL_OPERAND2_ALPHA: - case GL_OPERAND3_ALPHA_NV: - set_combiner_operand(ctx, texUnit, pname, (GLenum) iparam0); - break; - case GL_RGB_SCALE: - case GL_ALPHA_SCALE: - set_combiner_scale(ctx, texUnit, pname, param[0]); - break; - case GL_BUMP_TARGET_ATI: - if (!ctx->Extensions.ATI_envmap_bumpmap) { - _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname=0x%x)", pname ); - return; - } - if ((iparam0 < GL_TEXTURE0) || - (iparam0 > GL_TEXTURE31)) { - /* spec doesn't say this but it seems logical */ - _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(param=0x%x)", iparam0); - return; - } - if (!((1 << (iparam0 - GL_TEXTURE0)) & ctx->Const.SupportedBumpUnits)) { - _mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", iparam0); - return; - } - else { - FLUSH_VERTICES(ctx, _NEW_TEXTURE); - texUnit->BumpTarget = iparam0; - } - 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) { - if (iparam0 == GL_TRUE || iparam0 == 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) iparam0; - 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)", iparam0); - 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) iparam0)); - - /* 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 ) -{ - GLfloat p[4]; - p[0] = param; - p[1] = p[2] = p[3] = 0.0; - _mesa_TexEnvfv( target, pname, p ); -} - - - -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 ); -} - - - -/** - * Helper for glGetTexEnvi/f() - * \return value of queried pname or -1 if error. - */ -static GLint -get_texenvi(struct gl_context *ctx, const struct gl_texture_unit *texUnit, - GLenum pname) -{ - switch (pname) { - case GL_TEXTURE_ENV_MODE: - return texUnit->EnvMode; - break; - case GL_COMBINE_RGB: - if (ctx->Extensions.EXT_texture_env_combine || - ctx->Extensions.ARB_texture_env_combine) { - return 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) { - return 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; - return texUnit->Combine.SourceRGB[rgb_idx]; - } - else { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); - } - break; - case GL_SOURCE3_RGB_NV: - if (ctx->Extensions.NV_texture_env_combine4) { - return texUnit->Combine.SourceRGB[3]; - } - 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; - return texUnit->Combine.SourceA[alpha_idx]; - } - else { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); - } - break; - case GL_SOURCE3_ALPHA_NV: - if (ctx->Extensions.NV_texture_env_combine4) { - return texUnit->Combine.SourceA[3]; - } - 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; - return texUnit->Combine.OperandRGB[op_rgb]; - } - else { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); - } - break; - case GL_OPERAND3_RGB_NV: - if (ctx->Extensions.NV_texture_env_combine4) { - return texUnit->Combine.OperandRGB[3]; - } - 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; - return texUnit->Combine.OperandA[op_alpha]; - } - else { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); - } - break; - case GL_OPERAND3_ALPHA_NV: - if (ctx->Extensions.NV_texture_env_combine4) { - return texUnit->Combine.OperandA[3]; - } - 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) { - return 1 << texUnit->Combine.ScaleShiftRGB; - } - else { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); - } - break; - case GL_ALPHA_SCALE: - if (ctx->Extensions.EXT_texture_env_combine || - ctx->Extensions.ARB_texture_env_combine) { - return 1 << texUnit->Combine.ScaleShiftA; - } - else { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); - } - break; - case GL_BUMP_TARGET_ATI: - /* spec doesn't say so, but I think this should be queryable */ - if (ctx->Extensions.ATI_envmap_bumpmap) { - return texUnit->BumpTarget; - } - else { - _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); - } - break; - - default: - ; - } - - return -1; /* error */ -} - - - -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 = _mesa_get_current_tex_unit(ctx); - - if (target == GL_TEXTURE_ENV) { - if (pname == GL_TEXTURE_ENV_COLOR) { - COPY_4FV( params, texUnit->EnvColor ); - } - else { - GLint val = get_texenvi(ctx, texUnit, pname); - if (val >= 0) { - *params = (GLfloat) val; - } - } - } - 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 = _mesa_get_current_tex_unit(ctx); - - if (target == GL_TEXTURE_ENV) { - if (pname == 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] ); - } - else { - GLint val = get_texenvi(ctx, texUnit, pname); - if (val >= 0) { - *params = val; - } - } - } - 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; - } -} - - -/** - * Why does ATI_envmap_bumpmap require new entrypoints? Should just - * reuse TexEnv ones... - */ -void GLAPIENTRY -_mesa_TexBumpParameterivATI( GLenum pname, const GLint *param ) -{ - GLfloat p[4]; - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (!ctx->Extensions.ATI_envmap_bumpmap) { - /* This isn't an "official" error case, but let's tell the user - * that something's wrong. - */ - _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBumpParameterivATI"); - return; - } - - if (pname == GL_BUMP_ROT_MATRIX_ATI) { - /* hope that conversion is correct here */ - 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] = 0.0F; /* init to zero, just to be safe */ - } - _mesa_TexBumpParameterfvATI( pname, p ); -} - - -void GLAPIENTRY -_mesa_TexBumpParameterfvATI( GLenum pname, const GLfloat *param ) -{ - struct gl_texture_unit *texUnit; - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (!ctx->Extensions.ATI_envmap_bumpmap) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBumpParameterfvATI"); - return; - } - - texUnit = _mesa_get_current_tex_unit(ctx); - - if (pname == GL_BUMP_ROT_MATRIX_ATI) { - if (TEST_EQ_4V(param, texUnit->RotMatrix)) - return; - FLUSH_VERTICES(ctx, _NEW_TEXTURE); - COPY_4FV(texUnit->RotMatrix, param); - } - else { - _mesa_error( ctx, GL_INVALID_ENUM, "glTexBumpParameter(pname)" ); - return; - } - /* Drivers might want to know about this, instead of dedicated function - just shove it into TexEnv where it really belongs anyway */ - if (ctx->Driver.TexEnv) { - (*ctx->Driver.TexEnv)( ctx, 0, pname, param ); - } -} - - -void GLAPIENTRY -_mesa_GetTexBumpParameterivATI( GLenum pname, GLint *param ) -{ - const struct gl_texture_unit *texUnit; - GLuint i; - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (!ctx->Extensions.ATI_envmap_bumpmap) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexBumpParameterivATI"); - return; - } - - texUnit = _mesa_get_current_tex_unit(ctx); - - if (pname == GL_BUMP_ROT_MATRIX_SIZE_ATI) { - /* spec leaves open to support larger matrices. - Don't think anyone would ever want to use it - (and apps almost certainly would not understand it and - thus fail to submit matrices correctly) so hardcode this. */ - *param = 4; - } - else if (pname == GL_BUMP_ROT_MATRIX_ATI) { - /* hope that conversion is correct here */ - param[0] = FLOAT_TO_INT(texUnit->RotMatrix[0]); - param[1] = FLOAT_TO_INT(texUnit->RotMatrix[1]); - param[2] = FLOAT_TO_INT(texUnit->RotMatrix[2]); - param[3] = FLOAT_TO_INT(texUnit->RotMatrix[3]); - } - else if (pname == GL_BUMP_NUM_TEX_UNITS_ATI) { - GLint count = 0; - for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) { - if (ctx->Const.SupportedBumpUnits & (1 << i)) { - count++; - } - } - *param = count; - } - else if (pname == GL_BUMP_TEX_UNITS_ATI) { - for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) { - if (ctx->Const.SupportedBumpUnits & (1 << i)) { - *param++ = i + GL_TEXTURE0; - } - } - } - else { - _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexBumpParameter(pname)" ); - return; - } -} - - -void GLAPIENTRY -_mesa_GetTexBumpParameterfvATI( GLenum pname, GLfloat *param ) -{ - const struct gl_texture_unit *texUnit; - GLuint i; - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (!ctx->Extensions.ATI_envmap_bumpmap) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexBumpParameterfvATI"); - return; - } - - texUnit = _mesa_get_current_tex_unit(ctx); - - if (pname == GL_BUMP_ROT_MATRIX_SIZE_ATI) { - /* spec leaves open to support larger matrices. - Don't think anyone would ever want to use it - (and apps might not understand it) so hardcode this. */ - *param = 4.0F; - } - else if (pname == GL_BUMP_ROT_MATRIX_ATI) { - param[0] = texUnit->RotMatrix[0]; - param[1] = texUnit->RotMatrix[1]; - param[2] = texUnit->RotMatrix[2]; - param[3] = texUnit->RotMatrix[3]; - } - else if (pname == GL_BUMP_NUM_TEX_UNITS_ATI) { - GLint count = 0; - for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) { - if (ctx->Const.SupportedBumpUnits & (1 << i)) { - count++; - } - } - *param = (GLfloat) count; - } - else if (pname == GL_BUMP_TEX_UNITS_ATI) { - for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) { - if (ctx->Const.SupportedBumpUnits & (1 << i)) { - *param++ = (GLfloat) (i + GL_TEXTURE0); - } - } - } - else { - _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexBumpParameter(pname)" ); - return; - } -} +/* + * Mesa 3-D graphics library + * 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"), + * 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 texenv.c + * + * glTexEnv-related functions + */ + + +#include "main/glheader.h" +#include "main/context.h" +#include "main/enums.h" +#include "main/macros.h" +#include "main/mtypes.h" +#include "main/state.h" +#include "main/texenv.h" +#include "main/texstate.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(struct gl_context *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(struct gl_context *ctx, + struct gl_texture_unit *texUnit, + const GLfloat *color) +{ + if (TEST_EQ_4V(color, texUnit->EnvColorUnclamped)) + return; + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + COPY_4FV(texUnit->EnvColorUnclamped, color); + texUnit->EnvColor[0] = CLAMP(color[0], 0.0F, 1.0F); + texUnit->EnvColor[1] = CLAMP(color[1], 0.0F, 1.0F); + texUnit->EnvColor[2] = CLAMP(color[2], 0.0F, 1.0F); + texUnit->EnvColor[3] = CLAMP(color[3], 0.0F, 1.0F); +} + + +/** Set an RGB or A combiner mode/function */ +static void +set_combiner_mode(struct gl_context *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; + case GL_BUMP_ENVMAP_ATI: + legal = (ctx->Extensions.ATI_envmap_bumpmap && + pname == GL_COMBINE_RGB); + 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(struct gl_context *ctx, + struct gl_texture_unit *texUnit, + GLenum pname, GLenum param) +{ + GLuint term; + 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 (term, alpha). + * + * The enums were given sequential values for a reason. + */ + switch (pname) { + case GL_SOURCE0_RGB: + case GL_SOURCE1_RGB: + case GL_SOURCE2_RGB: + case GL_SOURCE3_RGB_NV: + term = pname - GL_SOURCE0_RGB; + alpha = GL_FALSE; + break; + case GL_SOURCE0_ALPHA: + case GL_SOURCE1_ALPHA: + case GL_SOURCE2_ALPHA: + case GL_SOURCE3_ALPHA_NV: + term = pname - GL_SOURCE0_ALPHA; + alpha = GL_TRUE; + break; + default: + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); + return; + } + + if ((term == 3) && !ctx->Extensions.NV_texture_env_combine4) { + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); + return; + } + + assert(term < MAX_COMBINER_TERMS); + + /* + * 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: + legal = (ctx->Extensions.ATI_texture_env_combine3 || + ctx->Extensions.NV_texture_env_combine4); + break; + 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); + + if (alpha) + texUnit->Combine.SourceA[term] = param; + else + texUnit->Combine.SourceRGB[term] = param; +} + + +/** Set an RGB or A combiner operand term */ +static void +set_combiner_operand(struct gl_context *ctx, + struct gl_texture_unit *texUnit, + GLenum pname, GLenum param) +{ + GLuint term; + 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; + } + + /* The enums were given sequential values for a reason. + */ + switch (pname) { + case GL_OPERAND0_RGB: + case GL_OPERAND1_RGB: + case GL_OPERAND2_RGB: + case GL_OPERAND3_RGB_NV: + term = pname - GL_OPERAND0_RGB; + alpha = GL_FALSE; + break; + case GL_OPERAND0_ALPHA: + case GL_OPERAND1_ALPHA: + case GL_OPERAND2_ALPHA: + case GL_OPERAND3_ALPHA_NV: + term = pname - GL_OPERAND0_ALPHA; + alpha = GL_TRUE; + break; + default: + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); + return; + } + + if ((term == 3) && !ctx->Extensions.NV_texture_env_combine4) { + TE_ERROR(GL_INVALID_ENUM, "glTexEnv(pname=%s)", pname); + return; + } + + assert(term < MAX_COMBINER_TERMS); + + /* + * Error-check param (the source operand) + */ + switch (param) { + case GL_SRC_COLOR: + case GL_ONE_MINUS_SRC_COLOR: + /* The color input can only be used with GL_OPERAND[01]_RGB in the EXT + * version. In the ARB and NV versions they can be used for any RGB + * operand. + */ + legal = !alpha + && ((term < 2) || ctx->Extensions.ARB_texture_env_combine + || ctx->Extensions.NV_texture_env_combine4); + break; + case GL_ONE_MINUS_SRC_ALPHA: + /* GL_ONE_MINUS_SRC_ALPHA can only be used with + * GL_OPERAND[01]_(RGB|ALPHA) in the EXT version. In the ARB and NV + * versions it can be used for any operand. + */ + legal = (term < 2) || ctx->Extensions.ARB_texture_env_combine + || ctx->Extensions.NV_texture_env_combine4; + break; + case GL_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[term] = param; + else + texUnit->Combine.OperandRGB[term] = param; +} + + +static void +set_combiner_scale(struct gl_context *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); + } +} + + + +void GLAPIENTRY +_mesa_TexEnvfv( GLenum target, GLenum pname, const GLfloat *param ) +{ + const GLint iparam0 = (GLint) param[0]; + struct gl_texture_unit *texUnit; + GLuint maxUnit; + + 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, "glTexEnvfv(current unit)"); + return; + } + + texUnit = _mesa_get_current_tex_unit(ctx); + + if (target == GL_TEXTURE_ENV) { + switch (pname) { + case GL_TEXTURE_ENV_MODE: + set_env_mode(ctx, texUnit, (GLenum) iparam0); + break; + case GL_TEXTURE_ENV_COLOR: + set_env_color(ctx, texUnit, param); + break; + case GL_COMBINE_RGB: + case GL_COMBINE_ALPHA: + set_combiner_mode(ctx, texUnit, pname, (GLenum) iparam0); + break; + case GL_SOURCE0_RGB: + case GL_SOURCE1_RGB: + case GL_SOURCE2_RGB: + case GL_SOURCE3_RGB_NV: + case GL_SOURCE0_ALPHA: + case GL_SOURCE1_ALPHA: + case GL_SOURCE2_ALPHA: + case GL_SOURCE3_ALPHA_NV: + set_combiner_source(ctx, texUnit, pname, (GLenum) iparam0); + break; + case GL_OPERAND0_RGB: + case GL_OPERAND1_RGB: + case GL_OPERAND2_RGB: + case GL_OPERAND3_RGB_NV: + case GL_OPERAND0_ALPHA: + case GL_OPERAND1_ALPHA: + case GL_OPERAND2_ALPHA: + case GL_OPERAND3_ALPHA_NV: + set_combiner_operand(ctx, texUnit, pname, (GLenum) iparam0); + break; + case GL_RGB_SCALE: + case GL_ALPHA_SCALE: + set_combiner_scale(ctx, texUnit, pname, param[0]); + break; + case GL_BUMP_TARGET_ATI: + if (!ctx->Extensions.ATI_envmap_bumpmap) { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(pname=0x%x)", pname ); + return; + } + if ((iparam0 < GL_TEXTURE0) || + (iparam0 > GL_TEXTURE31)) { + /* spec doesn't say this but it seems logical */ + _mesa_error( ctx, GL_INVALID_ENUM, "glTexEnv(param=0x%x)", iparam0); + return; + } + if (!((1 << (iparam0 - GL_TEXTURE0)) & ctx->Const.SupportedBumpUnits)) { + _mesa_error( ctx, GL_INVALID_VALUE, "glTexEnv(param=0x%x)", iparam0); + return; + } + else { + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + texUnit->BumpTarget = iparam0; + } + 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) { + if (iparam0 == GL_TRUE || iparam0 == 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) iparam0; + 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)", iparam0); + 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) iparam0)); + + /* 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 ) +{ + GLfloat p[4]; + p[0] = param; + p[1] = p[2] = p[3] = 0.0; + _mesa_TexEnvfv( target, pname, p ); +} + + + +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 ); +} + + + +/** + * Helper for glGetTexEnvi/f() + * \return value of queried pname or -1 if error. + */ +static GLint +get_texenvi(struct gl_context *ctx, const struct gl_texture_unit *texUnit, + GLenum pname) +{ + switch (pname) { + case GL_TEXTURE_ENV_MODE: + return texUnit->EnvMode; + break; + case GL_COMBINE_RGB: + if (ctx->Extensions.EXT_texture_env_combine || + ctx->Extensions.ARB_texture_env_combine) { + return 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) { + return 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; + return texUnit->Combine.SourceRGB[rgb_idx]; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); + } + break; + case GL_SOURCE3_RGB_NV: + if (ctx->Extensions.NV_texture_env_combine4) { + return texUnit->Combine.SourceRGB[3]; + } + 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; + return texUnit->Combine.SourceA[alpha_idx]; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); + } + break; + case GL_SOURCE3_ALPHA_NV: + if (ctx->Extensions.NV_texture_env_combine4) { + return texUnit->Combine.SourceA[3]; + } + 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; + return texUnit->Combine.OperandRGB[op_rgb]; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); + } + break; + case GL_OPERAND3_RGB_NV: + if (ctx->Extensions.NV_texture_env_combine4) { + return texUnit->Combine.OperandRGB[3]; + } + 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; + return texUnit->Combine.OperandA[op_alpha]; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); + } + break; + case GL_OPERAND3_ALPHA_NV: + if (ctx->Extensions.NV_texture_env_combine4) { + return texUnit->Combine.OperandA[3]; + } + 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) { + return 1 << texUnit->Combine.ScaleShiftRGB; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); + } + break; + case GL_ALPHA_SCALE: + if (ctx->Extensions.EXT_texture_env_combine || + ctx->Extensions.ARB_texture_env_combine) { + return 1 << texUnit->Combine.ScaleShiftA; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); + } + break; + case GL_BUMP_TARGET_ATI: + /* spec doesn't say so, but I think this should be queryable */ + if (ctx->Extensions.ATI_envmap_bumpmap) { + return texUnit->BumpTarget; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexEnvfv(pname)"); + } + break; + + default: + ; + } + + return -1; /* error */ +} + + + +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 = _mesa_get_current_tex_unit(ctx); + + if (target == GL_TEXTURE_ENV) { + if (pname == GL_TEXTURE_ENV_COLOR) { + if(ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP)) + _mesa_update_state(ctx); + if(ctx->Color._ClampFragmentColor) + COPY_4FV( params, texUnit->EnvColor ); + else + COPY_4FV( params, texUnit->EnvColorUnclamped ); + } + else { + GLint val = get_texenvi(ctx, texUnit, pname); + if (val >= 0) { + *params = (GLfloat) val; + } + } + } + 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 = _mesa_get_current_tex_unit(ctx); + + if (target == GL_TEXTURE_ENV) { + if (pname == 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] ); + } + else { + GLint val = get_texenvi(ctx, texUnit, pname); + if (val >= 0) { + *params = val; + } + } + } + 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; + } +} + + +/** + * Why does ATI_envmap_bumpmap require new entrypoints? Should just + * reuse TexEnv ones... + */ +void GLAPIENTRY +_mesa_TexBumpParameterivATI( GLenum pname, const GLint *param ) +{ + GLfloat p[4]; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.ATI_envmap_bumpmap) { + /* This isn't an "official" error case, but let's tell the user + * that something's wrong. + */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBumpParameterivATI"); + return; + } + + if (pname == GL_BUMP_ROT_MATRIX_ATI) { + /* hope that conversion is correct here */ + 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] = 0.0F; /* init to zero, just to be safe */ + } + _mesa_TexBumpParameterfvATI( pname, p ); +} + + +void GLAPIENTRY +_mesa_TexBumpParameterfvATI( GLenum pname, const GLfloat *param ) +{ + struct gl_texture_unit *texUnit; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.ATI_envmap_bumpmap) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glTexBumpParameterfvATI"); + return; + } + + texUnit = _mesa_get_current_tex_unit(ctx); + + if (pname == GL_BUMP_ROT_MATRIX_ATI) { + if (TEST_EQ_4V(param, texUnit->RotMatrix)) + return; + FLUSH_VERTICES(ctx, _NEW_TEXTURE); + COPY_4FV(texUnit->RotMatrix, param); + } + else { + _mesa_error( ctx, GL_INVALID_ENUM, "glTexBumpParameter(pname)" ); + return; + } + /* Drivers might want to know about this, instead of dedicated function + just shove it into TexEnv where it really belongs anyway */ + if (ctx->Driver.TexEnv) { + (*ctx->Driver.TexEnv)( ctx, 0, pname, param ); + } +} + + +void GLAPIENTRY +_mesa_GetTexBumpParameterivATI( GLenum pname, GLint *param ) +{ + const struct gl_texture_unit *texUnit; + GLuint i; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.ATI_envmap_bumpmap) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexBumpParameterivATI"); + return; + } + + texUnit = _mesa_get_current_tex_unit(ctx); + + if (pname == GL_BUMP_ROT_MATRIX_SIZE_ATI) { + /* spec leaves open to support larger matrices. + Don't think anyone would ever want to use it + (and apps almost certainly would not understand it and + thus fail to submit matrices correctly) so hardcode this. */ + *param = 4; + } + else if (pname == GL_BUMP_ROT_MATRIX_ATI) { + /* hope that conversion is correct here */ + param[0] = FLOAT_TO_INT(texUnit->RotMatrix[0]); + param[1] = FLOAT_TO_INT(texUnit->RotMatrix[1]); + param[2] = FLOAT_TO_INT(texUnit->RotMatrix[2]); + param[3] = FLOAT_TO_INT(texUnit->RotMatrix[3]); + } + else if (pname == GL_BUMP_NUM_TEX_UNITS_ATI) { + GLint count = 0; + for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) { + if (ctx->Const.SupportedBumpUnits & (1 << i)) { + count++; + } + } + *param = count; + } + else if (pname == GL_BUMP_TEX_UNITS_ATI) { + for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) { + if (ctx->Const.SupportedBumpUnits & (1 << i)) { + *param++ = i + GL_TEXTURE0; + } + } + } + else { + _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexBumpParameter(pname)" ); + return; + } +} + + +void GLAPIENTRY +_mesa_GetTexBumpParameterfvATI( GLenum pname, GLfloat *param ) +{ + const struct gl_texture_unit *texUnit; + GLuint i; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.ATI_envmap_bumpmap) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexBumpParameterfvATI"); + return; + } + + texUnit = _mesa_get_current_tex_unit(ctx); + + if (pname == GL_BUMP_ROT_MATRIX_SIZE_ATI) { + /* spec leaves open to support larger matrices. + Don't think anyone would ever want to use it + (and apps might not understand it) so hardcode this. */ + *param = 4.0F; + } + else if (pname == GL_BUMP_ROT_MATRIX_ATI) { + param[0] = texUnit->RotMatrix[0]; + param[1] = texUnit->RotMatrix[1]; + param[2] = texUnit->RotMatrix[2]; + param[3] = texUnit->RotMatrix[3]; + } + else if (pname == GL_BUMP_NUM_TEX_UNITS_ATI) { + GLint count = 0; + for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) { + if (ctx->Const.SupportedBumpUnits & (1 << i)) { + count++; + } + } + *param = (GLfloat) count; + } + else if (pname == GL_BUMP_TEX_UNITS_ATI) { + for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) { + if (ctx->Const.SupportedBumpUnits & (1 << i)) { + *param++ = (GLfloat) (i + GL_TEXTURE0); + } + } + } + else { + _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexBumpParameter(pname)" ); + return; + } +} -- cgit v1.2.3