602 lines
17 KiB
C
602 lines
17 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 7.1
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*
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file texgen.c
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*
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* glTexGen-related functions
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*/
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#include "main/glheader.h"
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#include "main/context.h"
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#include "main/enums.h"
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#include "main/macros.h"
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#include "main/texgen.h"
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#include "math/m_xform.h"
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void GLAPIENTRY
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_mesa_TexGenfv( GLenum coord, GLenum pname, const GLfloat *params )
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{
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GET_CURRENT_CONTEXT(ctx);
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struct gl_texture_unit *texUnit;
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ASSERT_OUTSIDE_BEGIN_END(ctx);
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if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
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_mesa_debug(ctx, "glTexGen %s %s %.1f(%s)...\n",
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_mesa_lookup_enum_by_nr(coord),
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_mesa_lookup_enum_by_nr(pname),
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*params,
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_mesa_lookup_enum_by_nr((GLenum) (GLint) *params));
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if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
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_mesa_error(ctx, GL_INVALID_OPERATION, "glTexGen(current unit)");
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return;
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}
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texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
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switch (coord) {
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case GL_S:
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if (pname==GL_TEXTURE_GEN_MODE) {
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GLenum mode = (GLenum) (GLint) *params;
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GLbitfield bits;
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switch (mode) {
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case GL_OBJECT_LINEAR:
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bits = TEXGEN_OBJ_LINEAR;
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break;
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case GL_EYE_LINEAR:
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bits = TEXGEN_EYE_LINEAR;
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break;
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case GL_REFLECTION_MAP_NV:
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bits = TEXGEN_REFLECTION_MAP_NV;
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break;
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case GL_NORMAL_MAP_NV:
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bits = TEXGEN_NORMAL_MAP_NV;
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break;
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case GL_SPHERE_MAP:
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bits = TEXGEN_SPHERE_MAP;
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break;
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default:
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_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
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return;
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}
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if (texUnit->GenModeS == mode)
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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texUnit->GenModeS = mode;
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texUnit->_GenBitS = bits;
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}
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else if (pname==GL_OBJECT_PLANE) {
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if (TEST_EQ_4V(texUnit->ObjectPlaneS, params))
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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COPY_4FV(texUnit->ObjectPlaneS, params);
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}
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else if (pname==GL_EYE_PLANE) {
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GLfloat tmp[4];
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/* Transform plane equation by the inverse modelview matrix */
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if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
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_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
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}
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_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
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if (TEST_EQ_4V(texUnit->EyePlaneS, tmp))
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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COPY_4FV(texUnit->EyePlaneS, tmp);
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
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return;
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}
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break;
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case GL_T:
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if (pname==GL_TEXTURE_GEN_MODE) {
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GLenum mode = (GLenum) (GLint) *params;
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GLbitfield bitt;
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switch (mode) {
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case GL_OBJECT_LINEAR:
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bitt = TEXGEN_OBJ_LINEAR;
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break;
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case GL_EYE_LINEAR:
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bitt = TEXGEN_EYE_LINEAR;
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break;
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case GL_REFLECTION_MAP_NV:
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bitt = TEXGEN_REFLECTION_MAP_NV;
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break;
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case GL_NORMAL_MAP_NV:
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bitt = TEXGEN_NORMAL_MAP_NV;
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break;
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case GL_SPHERE_MAP:
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bitt = TEXGEN_SPHERE_MAP;
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break;
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default:
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_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
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return;
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}
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if (texUnit->GenModeT == mode)
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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texUnit->GenModeT = mode;
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texUnit->_GenBitT = bitt;
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}
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else if (pname==GL_OBJECT_PLANE) {
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if (TEST_EQ_4V(texUnit->ObjectPlaneT, params))
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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COPY_4FV(texUnit->ObjectPlaneT, params);
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}
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else if (pname==GL_EYE_PLANE) {
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GLfloat tmp[4];
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/* Transform plane equation by the inverse modelview matrix */
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if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
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_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
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}
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_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
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if (TEST_EQ_4V(texUnit->EyePlaneT, tmp))
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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COPY_4FV(texUnit->EyePlaneT, tmp);
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
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return;
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}
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break;
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case GL_R:
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if (pname==GL_TEXTURE_GEN_MODE) {
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GLenum mode = (GLenum) (GLint) *params;
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GLbitfield bitr;
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switch (mode) {
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case GL_OBJECT_LINEAR:
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bitr = TEXGEN_OBJ_LINEAR;
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break;
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case GL_REFLECTION_MAP_NV:
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bitr = TEXGEN_REFLECTION_MAP_NV;
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break;
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case GL_NORMAL_MAP_NV:
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bitr = TEXGEN_NORMAL_MAP_NV;
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break;
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case GL_EYE_LINEAR:
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bitr = TEXGEN_EYE_LINEAR;
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break;
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default:
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_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
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return;
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}
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if (texUnit->GenModeR == mode)
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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texUnit->GenModeR = mode;
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texUnit->_GenBitR = bitr;
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}
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else if (pname==GL_OBJECT_PLANE) {
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if (TEST_EQ_4V(texUnit->ObjectPlaneR, params))
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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COPY_4FV(texUnit->ObjectPlaneR, params);
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}
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else if (pname==GL_EYE_PLANE) {
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GLfloat tmp[4];
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/* Transform plane equation by the inverse modelview matrix */
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if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
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_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
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}
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_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
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if (TEST_EQ_4V(texUnit->EyePlaneR, tmp))
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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COPY_4FV(texUnit->EyePlaneR, tmp);
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
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return;
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}
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break;
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case GL_Q:
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if (pname==GL_TEXTURE_GEN_MODE) {
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GLenum mode = (GLenum) (GLint) *params;
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GLbitfield bitq;
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switch (mode) {
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case GL_OBJECT_LINEAR:
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bitq = TEXGEN_OBJ_LINEAR;
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break;
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case GL_EYE_LINEAR:
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bitq = TEXGEN_EYE_LINEAR;
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break;
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default:
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_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
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return;
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}
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if (texUnit->GenModeQ == mode)
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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texUnit->GenModeQ = mode;
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texUnit->_GenBitQ = bitq;
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}
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else if (pname==GL_OBJECT_PLANE) {
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if (TEST_EQ_4V(texUnit->ObjectPlaneQ, params))
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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COPY_4FV(texUnit->ObjectPlaneQ, params);
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}
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else if (pname==GL_EYE_PLANE) {
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GLfloat tmp[4];
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/* Transform plane equation by the inverse modelview matrix */
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if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
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_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
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}
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_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
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if (TEST_EQ_4V(texUnit->EyePlaneQ, tmp))
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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COPY_4FV(texUnit->EyePlaneQ, tmp);
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
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return;
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}
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break;
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default:
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_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(coord)" );
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return;
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}
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if (ctx->Driver.TexGen)
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ctx->Driver.TexGen( ctx, coord, pname, params );
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}
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void GLAPIENTRY
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_mesa_TexGeniv(GLenum coord, GLenum pname, const GLint *params )
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{
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GLfloat p[4];
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p[0] = (GLfloat) params[0];
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if (pname == GL_TEXTURE_GEN_MODE) {
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p[1] = p[2] = p[3] = 0.0F;
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}
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else {
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p[1] = (GLfloat) params[1];
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p[2] = (GLfloat) params[2];
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p[3] = (GLfloat) params[3];
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}
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_mesa_TexGenfv(coord, pname, p);
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}
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void GLAPIENTRY
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_mesa_TexGend(GLenum coord, GLenum pname, GLdouble param )
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{
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GLfloat p = (GLfloat) param;
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_mesa_TexGenfv( coord, pname, &p );
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}
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void GLAPIENTRY
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_mesa_TexGendv(GLenum coord, GLenum pname, const GLdouble *params )
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{
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GLfloat p[4];
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p[0] = (GLfloat) params[0];
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if (pname == GL_TEXTURE_GEN_MODE) {
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p[1] = p[2] = p[3] = 0.0F;
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}
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else {
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p[1] = (GLfloat) params[1];
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p[2] = (GLfloat) params[2];
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p[3] = (GLfloat) params[3];
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}
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_mesa_TexGenfv( coord, pname, p );
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}
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void GLAPIENTRY
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_mesa_TexGenf( GLenum coord, GLenum pname, GLfloat param )
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{
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_mesa_TexGenfv(coord, pname, ¶m);
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}
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void GLAPIENTRY
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_mesa_TexGeni( GLenum coord, GLenum pname, GLint param )
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{
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_mesa_TexGeniv( coord, pname, ¶m );
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}
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void GLAPIENTRY
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_mesa_GetTexGendv( GLenum coord, GLenum pname, GLdouble *params )
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{
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const struct gl_texture_unit *texUnit;
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GET_CURRENT_CONTEXT(ctx);
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ASSERT_OUTSIDE_BEGIN_END(ctx);
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if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
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_mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGendv(current unit)");
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return;
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}
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texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
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switch (coord) {
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case GL_S:
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if (pname==GL_TEXTURE_GEN_MODE) {
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params[0] = ENUM_TO_DOUBLE(texUnit->GenModeS);
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}
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else if (pname==GL_OBJECT_PLANE) {
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COPY_4V( params, texUnit->ObjectPlaneS );
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}
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else if (pname==GL_EYE_PLANE) {
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COPY_4V( params, texUnit->EyePlaneS );
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
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return;
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}
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break;
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case GL_T:
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if (pname==GL_TEXTURE_GEN_MODE) {
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params[0] = ENUM_TO_DOUBLE(texUnit->GenModeT);
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}
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else if (pname==GL_OBJECT_PLANE) {
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COPY_4V( params, texUnit->ObjectPlaneT );
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}
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else if (pname==GL_EYE_PLANE) {
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COPY_4V( params, texUnit->EyePlaneT );
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
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return;
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}
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break;
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case GL_R:
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if (pname==GL_TEXTURE_GEN_MODE) {
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params[0] = ENUM_TO_DOUBLE(texUnit->GenModeR);
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}
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else if (pname==GL_OBJECT_PLANE) {
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COPY_4V( params, texUnit->ObjectPlaneR );
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}
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else if (pname==GL_EYE_PLANE) {
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COPY_4V( params, texUnit->EyePlaneR );
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
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return;
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}
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break;
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case GL_Q:
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if (pname==GL_TEXTURE_GEN_MODE) {
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params[0] = ENUM_TO_DOUBLE(texUnit->GenModeQ);
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}
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else if (pname==GL_OBJECT_PLANE) {
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COPY_4V( params, texUnit->ObjectPlaneQ );
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}
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else if (pname==GL_EYE_PLANE) {
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COPY_4V( params, texUnit->EyePlaneQ );
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
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return;
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}
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break;
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default:
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(coord)" );
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return;
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}
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}
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void GLAPIENTRY
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_mesa_GetTexGenfv( GLenum coord, GLenum pname, GLfloat *params )
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{
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const struct gl_texture_unit *texUnit;
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GET_CURRENT_CONTEXT(ctx);
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ASSERT_OUTSIDE_BEGIN_END(ctx);
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if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
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_mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGenfv(current unit)");
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return;
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}
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texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
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switch (coord) {
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case GL_S:
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if (pname==GL_TEXTURE_GEN_MODE) {
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params[0] = ENUM_TO_FLOAT(texUnit->GenModeS);
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}
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else if (pname==GL_OBJECT_PLANE) {
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COPY_4V( params, texUnit->ObjectPlaneS );
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}
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else if (pname==GL_EYE_PLANE) {
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COPY_4V( params, texUnit->EyePlaneS );
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
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return;
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}
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break;
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case GL_T:
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if (pname==GL_TEXTURE_GEN_MODE) {
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params[0] = ENUM_TO_FLOAT(texUnit->GenModeT);
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}
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else if (pname==GL_OBJECT_PLANE) {
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COPY_4V( params, texUnit->ObjectPlaneT );
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}
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else if (pname==GL_EYE_PLANE) {
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COPY_4V( params, texUnit->EyePlaneT );
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
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return;
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}
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break;
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case GL_R:
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if (pname==GL_TEXTURE_GEN_MODE) {
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params[0] = ENUM_TO_FLOAT(texUnit->GenModeR);
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}
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else if (pname==GL_OBJECT_PLANE) {
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COPY_4V( params, texUnit->ObjectPlaneR );
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}
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else if (pname==GL_EYE_PLANE) {
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COPY_4V( params, texUnit->EyePlaneR );
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
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return;
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}
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break;
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case GL_Q:
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if (pname==GL_TEXTURE_GEN_MODE) {
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params[0] = ENUM_TO_FLOAT(texUnit->GenModeQ);
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}
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else if (pname==GL_OBJECT_PLANE) {
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COPY_4V( params, texUnit->ObjectPlaneQ );
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}
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else if (pname==GL_EYE_PLANE) {
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COPY_4V( params, texUnit->EyePlaneQ );
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
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return;
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}
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break;
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default:
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(coord)" );
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return;
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}
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}
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void GLAPIENTRY
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_mesa_GetTexGeniv( GLenum coord, GLenum pname, GLint *params )
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{
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const struct gl_texture_unit *texUnit;
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GET_CURRENT_CONTEXT(ctx);
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ASSERT_OUTSIDE_BEGIN_END(ctx);
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if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
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_mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGeniv(current unit)");
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return;
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}
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texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
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switch (coord) {
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case GL_S:
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if (pname==GL_TEXTURE_GEN_MODE) {
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params[0] = texUnit->GenModeS;
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}
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else if (pname==GL_OBJECT_PLANE) {
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params[0] = (GLint) texUnit->ObjectPlaneS[0];
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params[1] = (GLint) texUnit->ObjectPlaneS[1];
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params[2] = (GLint) texUnit->ObjectPlaneS[2];
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params[3] = (GLint) texUnit->ObjectPlaneS[3];
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}
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else if (pname==GL_EYE_PLANE) {
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params[0] = (GLint) texUnit->EyePlaneS[0];
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params[1] = (GLint) texUnit->EyePlaneS[1];
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params[2] = (GLint) texUnit->EyePlaneS[2];
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params[3] = (GLint) texUnit->EyePlaneS[3];
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
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return;
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}
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break;
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case GL_T:
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if (pname==GL_TEXTURE_GEN_MODE) {
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params[0] = texUnit->GenModeT;
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}
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else if (pname==GL_OBJECT_PLANE) {
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params[0] = (GLint) texUnit->ObjectPlaneT[0];
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params[1] = (GLint) texUnit->ObjectPlaneT[1];
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params[2] = (GLint) texUnit->ObjectPlaneT[2];
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params[3] = (GLint) texUnit->ObjectPlaneT[3];
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}
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else if (pname==GL_EYE_PLANE) {
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params[0] = (GLint) texUnit->EyePlaneT[0];
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params[1] = (GLint) texUnit->EyePlaneT[1];
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params[2] = (GLint) texUnit->EyePlaneT[2];
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params[3] = (GLint) texUnit->EyePlaneT[3];
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
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return;
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}
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break;
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case GL_R:
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if (pname==GL_TEXTURE_GEN_MODE) {
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params[0] = texUnit->GenModeR;
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}
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else if (pname==GL_OBJECT_PLANE) {
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params[0] = (GLint) texUnit->ObjectPlaneR[0];
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params[1] = (GLint) texUnit->ObjectPlaneR[1];
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params[2] = (GLint) texUnit->ObjectPlaneR[2];
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params[3] = (GLint) texUnit->ObjectPlaneR[3];
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}
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else if (pname==GL_EYE_PLANE) {
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params[0] = (GLint) texUnit->EyePlaneR[0];
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params[1] = (GLint) texUnit->EyePlaneR[1];
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params[2] = (GLint) texUnit->EyePlaneR[2];
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params[3] = (GLint) texUnit->EyePlaneR[3];
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
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return;
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}
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break;
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case GL_Q:
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if (pname==GL_TEXTURE_GEN_MODE) {
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params[0] = texUnit->GenModeQ;
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}
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else if (pname==GL_OBJECT_PLANE) {
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params[0] = (GLint) texUnit->ObjectPlaneQ[0];
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params[1] = (GLint) texUnit->ObjectPlaneQ[1];
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params[2] = (GLint) texUnit->ObjectPlaneQ[2];
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params[3] = (GLint) texUnit->ObjectPlaneQ[3];
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}
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else if (pname==GL_EYE_PLANE) {
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params[0] = (GLint) texUnit->EyePlaneQ[0];
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params[1] = (GLint) texUnit->EyePlaneQ[1];
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params[2] = (GLint) texUnit->EyePlaneQ[2];
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params[3] = (GLint) texUnit->EyePlaneQ[3];
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}
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else {
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
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return;
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}
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break;
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default:
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(coord)" );
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return;
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}
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}
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