mirror of
https://github.com/reactos/reactos.git
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372 lines
9.3 KiB
C
372 lines
9.3 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 7.5
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*
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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* Copyright (C) 2009 VMware, Inc. 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 <precomp.h>
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#if FEATURE_texgen
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/**
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* Return texgen state for given coordinate
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*/
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static struct gl_texgen *
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get_texgen(struct gl_texture_unit *texUnit, GLenum coord)
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{
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switch (coord) {
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case GL_S:
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return &texUnit->GenS;
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case GL_T:
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return &texUnit->GenT;
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case GL_R:
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return &texUnit->GenR;
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case GL_Q:
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return &texUnit->GenQ;
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default:
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return NULL;
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}
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}
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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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struct gl_texture_unit *texUnit;
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struct gl_texgen *texgen;
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GET_CURRENT_CONTEXT(ctx);
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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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texUnit = &ctx->Texture.Unit;
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texgen = get_texgen(texUnit, coord);
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if (!texgen) {
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_mesa_error(ctx, GL_INVALID_ENUM, "glTexGen(coord)");
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return;
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}
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switch (pname) {
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case GL_TEXTURE_GEN_MODE:
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{
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GLenum mode = (GLenum) (GLint) params[0];
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GLbitfield bit = 0x0;
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if (texgen->Mode == mode)
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return;
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switch (mode) {
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case GL_OBJECT_LINEAR:
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bit = TEXGEN_OBJ_LINEAR;
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break;
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case GL_EYE_LINEAR:
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bit = TEXGEN_EYE_LINEAR;
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break;
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case GL_SPHERE_MAP:
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if (coord == GL_S || coord == GL_T)
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bit = TEXGEN_SPHERE_MAP;
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break;
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case GL_REFLECTION_MAP_NV:
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if (coord != GL_Q)
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bit = TEXGEN_REFLECTION_MAP_NV;
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break;
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case GL_NORMAL_MAP_NV:
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if (coord != GL_Q)
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bit = TEXGEN_NORMAL_MAP_NV;
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break;
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default:
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; /* nop */
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}
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if (!bit) {
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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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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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texgen->Mode = mode;
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texgen->_ModeBit = bit;
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}
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break;
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case GL_OBJECT_PLANE:
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{
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if (TEST_EQ_4V(texgen->ObjectPlane, params))
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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COPY_4FV(texgen->ObjectPlane, params);
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}
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break;
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case GL_EYE_PLANE:
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{
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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,
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ctx->ModelviewMatrixStack.Top->inv);
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if (TEST_EQ_4V(texgen->EyePlane, tmp))
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return;
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FLUSH_VERTICES(ctx, _NEW_TEXTURE);
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COPY_4FV(texgen->EyePlane, tmp);
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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(pname)" );
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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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static 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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static void GLAPIENTRY
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_mesa_TexGend(GLenum coord, GLenum pname, GLdouble param )
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{
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GLfloat p[4];
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p[0] = (GLfloat) param;
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p[1] = p[2] = p[3] = 0.0F;
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_mesa_TexGenfv( coord, pname, p );
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}
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#if FEATURE_ES1
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void GLAPIENTRY
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_es_GetTexGenfv(GLenum coord, GLenum pname, GLfloat *params)
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{
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ASSERT(coord == GL_TEXTURE_GEN_STR_OES);
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_mesa_GetTexGenfv(GL_S, pname, params);
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}
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void GLAPIENTRY
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_es_TexGenf(GLenum coord, GLenum pname, GLfloat param)
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{
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ASSERT(coord == GL_TEXTURE_GEN_STR_OES);
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/* set S, T, and R at the same time */
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_mesa_TexGenf(GL_S, pname, param);
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_mesa_TexGenf(GL_T, pname, param);
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_mesa_TexGenf(GL_R, pname, param);
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}
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void GLAPIENTRY
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_es_TexGenfv(GLenum coord, GLenum pname, const GLfloat *params)
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{
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ASSERT(coord == GL_TEXTURE_GEN_STR_OES);
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/* set S, T, and R at the same time */
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_mesa_TexGenfv(GL_S, pname, params);
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_mesa_TexGenfv(GL_T, pname, params);
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_mesa_TexGenfv(GL_R, pname, params);
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}
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#endif
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static 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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GLfloat p[4];
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p[0] = param;
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p[1] = p[2] = p[3] = 0.0F;
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_mesa_TexGenfv(coord, pname, p);
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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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GLint p[4];
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p[0] = param;
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p[1] = p[2] = p[3] = 0;
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_mesa_TexGeniv( coord, pname, p );
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}
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static void GLAPIENTRY
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_mesa_GetTexGendv( GLenum coord, GLenum pname, GLdouble *params )
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{
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struct gl_texture_unit *texUnit;
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struct gl_texgen *texgen;
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GET_CURRENT_CONTEXT(ctx);
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ASSERT_OUTSIDE_BEGIN_END(ctx);
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texUnit = &ctx->Texture.Unit;
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texgen = get_texgen(texUnit, coord);
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if (!texgen) {
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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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switch (pname) {
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case GL_TEXTURE_GEN_MODE:
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params[0] = ENUM_TO_DOUBLE(texgen->Mode);
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break;
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case GL_OBJECT_PLANE:
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COPY_4V(params, texgen->ObjectPlane);
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break;
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case GL_EYE_PLANE:
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COPY_4V(params, texgen->EyePlane);
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break;
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default:
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
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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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struct gl_texture_unit *texUnit;
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struct gl_texgen *texgen;
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GET_CURRENT_CONTEXT(ctx);
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ASSERT_OUTSIDE_BEGIN_END(ctx);
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texUnit = &ctx->Texture.Unit;
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texgen = get_texgen(texUnit, coord);
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if (!texgen) {
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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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switch (pname) {
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case GL_TEXTURE_GEN_MODE:
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params[0] = ENUM_TO_FLOAT(texgen->Mode);
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break;
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case GL_OBJECT_PLANE:
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COPY_4V(params, texgen->ObjectPlane);
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break;
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case GL_EYE_PLANE:
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COPY_4V(params, texgen->EyePlane);
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break;
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default:
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
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}
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}
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static void GLAPIENTRY
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_mesa_GetTexGeniv( GLenum coord, GLenum pname, GLint *params )
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{
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struct gl_texture_unit *texUnit;
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struct gl_texgen *texgen;
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GET_CURRENT_CONTEXT(ctx);
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ASSERT_OUTSIDE_BEGIN_END(ctx);
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texUnit = &ctx->Texture.Unit;
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texgen = get_texgen(texUnit, coord);
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if (!texgen) {
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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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switch (pname) {
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case GL_TEXTURE_GEN_MODE:
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params[0] = texgen->Mode;
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break;
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case GL_OBJECT_PLANE:
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params[0] = (GLint) texgen->ObjectPlane[0];
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params[1] = (GLint) texgen->ObjectPlane[1];
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params[2] = (GLint) texgen->ObjectPlane[2];
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params[3] = (GLint) texgen->ObjectPlane[3];
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break;
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case GL_EYE_PLANE:
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params[0] = (GLint) texgen->EyePlane[0];
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params[1] = (GLint) texgen->EyePlane[1];
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params[2] = (GLint) texgen->EyePlane[2];
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params[3] = (GLint) texgen->EyePlane[3];
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break;
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default:
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_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
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}
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}
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void
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_mesa_init_texgen_dispatch(struct _glapi_table *disp)
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{
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SET_GetTexGendv(disp, _mesa_GetTexGendv);
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SET_GetTexGenfv(disp, _mesa_GetTexGenfv);
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SET_GetTexGeniv(disp, _mesa_GetTexGeniv);
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SET_TexGend(disp, _mesa_TexGend);
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SET_TexGendv(disp, _mesa_TexGendv);
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SET_TexGenf(disp, _mesa_TexGenf);
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SET_TexGenfv(disp, _mesa_TexGenfv);
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SET_TexGeni(disp, _mesa_TexGeni);
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SET_TexGeniv(disp, _mesa_TexGeniv);
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}
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#endif /* FEATURE_texgen */
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