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Diffstat (limited to 'mesalib/src/mesa/main/texenv.c')
-rw-r--r--mesalib/src/mesa/main/texenv.c2086
1 files changed, 1043 insertions, 1043 deletions
diff --git a/mesalib/src/mesa/main/texenv.c b/mesalib/src/mesa/main/texenv.c
index c0d0f3779..7419a08fc 100644
--- a/mesalib/src/mesa/main/texenv.c
+++ b/mesalib/src/mesa/main/texenv.c
@@ -1,1043 +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/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.MaxCombinedTextureImageUnits;
- 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.MaxCombinedTextureImageUnits;
- 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.MaxCombinedTextureImageUnits;
- 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.MaxCombinedTextureImageUnits;
+ 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.MaxCombinedTextureImageUnits;
+ 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.MaxCombinedTextureImageUnits;
+ 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;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 08:19:28 +0000