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|
/*
* Mesa 3-D graphics library
* Version: 7.1
*
* Copyright (C) 1999-2008 Brian Paul 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 texgen.c
*
* glTexGen-related functions
*/
#include "main/glheader.h"
#include "main/context.h"
#include "main/enums.h"
#include "main/macros.h"
#include "main/texgen.h"
#include "math/m_xform.h"
void GLAPIENTRY
_mesa_TexGenfv( GLenum coord, GLenum pname, const GLfloat *params )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_texture_unit *texUnit;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE))
_mesa_debug(ctx, "glTexGen %s %s %.1f(%s)...\n",
_mesa_lookup_enum_by_nr(coord),
_mesa_lookup_enum_by_nr(pname),
*params,
_mesa_lookup_enum_by_nr((GLenum) (GLint) *params));
if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glTexGen(current unit)");
return;
}
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
switch (coord) {
case GL_S:
if (pname==GL_TEXTURE_GEN_MODE) {
GLenum mode = (GLenum) (GLint) *params;
GLbitfield bits;
switch (mode) {
case GL_OBJECT_LINEAR:
bits = TEXGEN_OBJ_LINEAR;
break;
case GL_EYE_LINEAR:
bits = TEXGEN_EYE_LINEAR;
break;
case GL_REFLECTION_MAP_NV:
bits = TEXGEN_REFLECTION_MAP_NV;
break;
case GL_NORMAL_MAP_NV:
bits = TEXGEN_NORMAL_MAP_NV;
break;
case GL_SPHERE_MAP:
bits = TEXGEN_SPHERE_MAP;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
return;
}
if (texUnit->GenModeS == mode)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->GenModeS = mode;
texUnit->_GenBitS = bits;
}
else if (pname==GL_OBJECT_PLANE) {
if (TEST_EQ_4V(texUnit->ObjectPlaneS, params))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->ObjectPlaneS, params);
}
else if (pname==GL_EYE_PLANE) {
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
if (TEST_EQ_4V(texUnit->EyePlaneS, tmp))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->EyePlaneS, tmp);
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
return;
}
break;
case GL_T:
if (pname==GL_TEXTURE_GEN_MODE) {
GLenum mode = (GLenum) (GLint) *params;
GLbitfield bitt;
switch (mode) {
case GL_OBJECT_LINEAR:
bitt = TEXGEN_OBJ_LINEAR;
break;
case GL_EYE_LINEAR:
bitt = TEXGEN_EYE_LINEAR;
break;
case GL_REFLECTION_MAP_NV:
bitt = TEXGEN_REFLECTION_MAP_NV;
break;
case GL_NORMAL_MAP_NV:
bitt = TEXGEN_NORMAL_MAP_NV;
break;
case GL_SPHERE_MAP:
bitt = TEXGEN_SPHERE_MAP;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
return;
}
if (texUnit->GenModeT == mode)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->GenModeT = mode;
texUnit->_GenBitT = bitt;
}
else if (pname==GL_OBJECT_PLANE) {
if (TEST_EQ_4V(texUnit->ObjectPlaneT, params))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->ObjectPlaneT, params);
}
else if (pname==GL_EYE_PLANE) {
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
if (TEST_EQ_4V(texUnit->EyePlaneT, tmp))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->EyePlaneT, tmp);
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
return;
}
break;
case GL_R:
if (pname==GL_TEXTURE_GEN_MODE) {
GLenum mode = (GLenum) (GLint) *params;
GLbitfield bitr;
switch (mode) {
case GL_OBJECT_LINEAR:
bitr = TEXGEN_OBJ_LINEAR;
break;
case GL_REFLECTION_MAP_NV:
bitr = TEXGEN_REFLECTION_MAP_NV;
break;
case GL_NORMAL_MAP_NV:
bitr = TEXGEN_NORMAL_MAP_NV;
break;
case GL_EYE_LINEAR:
bitr = TEXGEN_EYE_LINEAR;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
return;
}
if (texUnit->GenModeR == mode)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->GenModeR = mode;
texUnit->_GenBitR = bitr;
}
else if (pname==GL_OBJECT_PLANE) {
if (TEST_EQ_4V(texUnit->ObjectPlaneR, params))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->ObjectPlaneR, params);
}
else if (pname==GL_EYE_PLANE) {
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
if (TEST_EQ_4V(texUnit->EyePlaneR, tmp))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->EyePlaneR, tmp);
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
return;
}
break;
case GL_Q:
if (pname==GL_TEXTURE_GEN_MODE) {
GLenum mode = (GLenum) (GLint) *params;
GLbitfield bitq;
switch (mode) {
case GL_OBJECT_LINEAR:
bitq = TEXGEN_OBJ_LINEAR;
break;
case GL_EYE_LINEAR:
bitq = TEXGEN_EYE_LINEAR;
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" );
return;
}
if (texUnit->GenModeQ == mode)
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
texUnit->GenModeQ = mode;
texUnit->_GenBitQ = bitq;
}
else if (pname==GL_OBJECT_PLANE) {
if (TEST_EQ_4V(texUnit->ObjectPlaneQ, params))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->ObjectPlaneQ, params);
}
else if (pname==GL_EYE_PLANE) {
GLfloat tmp[4];
/* Transform plane equation by the inverse modelview matrix */
if (_math_matrix_is_dirty(ctx->ModelviewMatrixStack.Top)) {
_math_matrix_analyse( ctx->ModelviewMatrixStack.Top );
}
_mesa_transform_vector( tmp, params, ctx->ModelviewMatrixStack.Top->inv );
if (TEST_EQ_4V(texUnit->EyePlaneQ, tmp))
return;
FLUSH_VERTICES(ctx, _NEW_TEXTURE);
COPY_4FV(texUnit->EyePlaneQ, tmp);
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" );
return;
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(coord)" );
return;
}
if (ctx->Driver.TexGen)
ctx->Driver.TexGen( ctx, coord, pname, params );
}
void GLAPIENTRY
_mesa_TexGeniv(GLenum coord, GLenum pname, const GLint *params )
{
GLfloat p[4];
p[0] = (GLfloat) params[0];
if (pname == GL_TEXTURE_GEN_MODE) {
p[1] = p[2] = p[3] = 0.0F;
}
else {
p[1] = (GLfloat) params[1];
p[2] = (GLfloat) params[2];
p[3] = (GLfloat) params[3];
}
_mesa_TexGenfv(coord, pname, p);
}
void GLAPIENTRY
_mesa_TexGend(GLenum coord, GLenum pname, GLdouble param )
{
GLfloat p = (GLfloat) param;
_mesa_TexGenfv( coord, pname, &p );
}
void GLAPIENTRY
_mesa_TexGendv(GLenum coord, GLenum pname, const GLdouble *params )
{
GLfloat p[4];
p[0] = (GLfloat) params[0];
if (pname == GL_TEXTURE_GEN_MODE) {
p[1] = p[2] = p[3] = 0.0F;
}
else {
p[1] = (GLfloat) params[1];
p[2] = (GLfloat) params[2];
p[3] = (GLfloat) params[3];
}
_mesa_TexGenfv( coord, pname, p );
}
void GLAPIENTRY
_mesa_TexGenf( GLenum coord, GLenum pname, GLfloat param )
{
_mesa_TexGenfv(coord, pname, ¶m);
}
void GLAPIENTRY
_mesa_TexGeni( GLenum coord, GLenum pname, GLint param )
{
_mesa_TexGeniv( coord, pname, ¶m );
}
void GLAPIENTRY
_mesa_GetTexGendv( GLenum coord, GLenum pname, GLdouble *params )
{
const struct gl_texture_unit *texUnit;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGendv(current unit)");
return;
}
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
switch (coord) {
case GL_S:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_DOUBLE(texUnit->GenModeS);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneS );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneS );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
return;
}
break;
case GL_T:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_DOUBLE(texUnit->GenModeT);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneT );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneT );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
return;
}
break;
case GL_R:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_DOUBLE(texUnit->GenModeR);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneR );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneR );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
return;
}
break;
case GL_Q:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_DOUBLE(texUnit->GenModeQ);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneQ );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneQ );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" );
return;
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(coord)" );
return;
}
}
void GLAPIENTRY
_mesa_GetTexGenfv( GLenum coord, GLenum pname, GLfloat *params )
{
const struct gl_texture_unit *texUnit;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGenfv(current unit)");
return;
}
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
switch (coord) {
case GL_S:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_FLOAT(texUnit->GenModeS);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneS );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneS );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
return;
}
break;
case GL_T:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_FLOAT(texUnit->GenModeT);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneT );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneT );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
return;
}
break;
case GL_R:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_FLOAT(texUnit->GenModeR);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneR );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneR );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
return;
}
break;
case GL_Q:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = ENUM_TO_FLOAT(texUnit->GenModeQ);
}
else if (pname==GL_OBJECT_PLANE) {
COPY_4V( params, texUnit->ObjectPlaneQ );
}
else if (pname==GL_EYE_PLANE) {
COPY_4V( params, texUnit->EyePlaneQ );
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" );
return;
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(coord)" );
return;
}
}
void GLAPIENTRY
_mesa_GetTexGeniv( GLenum coord, GLenum pname, GLint *params )
{
const struct gl_texture_unit *texUnit;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexGeniv(current unit)");
return;
}
texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
switch (coord) {
case GL_S:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = texUnit->GenModeS;
}
else if (pname==GL_OBJECT_PLANE) {
params[0] = (GLint) texUnit->ObjectPlaneS[0];
params[1] = (GLint) texUnit->ObjectPlaneS[1];
params[2] = (GLint) texUnit->ObjectPlaneS[2];
params[3] = (GLint) texUnit->ObjectPlaneS[3];
}
else if (pname==GL_EYE_PLANE) {
params[0] = (GLint) texUnit->EyePlaneS[0];
params[1] = (GLint) texUnit->EyePlaneS[1];
params[2] = (GLint) texUnit->EyePlaneS[2];
params[3] = (GLint) texUnit->EyePlaneS[3];
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
return;
}
break;
case GL_T:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = texUnit->GenModeT;
}
else if (pname==GL_OBJECT_PLANE) {
params[0] = (GLint) texUnit->ObjectPlaneT[0];
params[1] = (GLint) texUnit->ObjectPlaneT[1];
params[2] = (GLint) texUnit->ObjectPlaneT[2];
params[3] = (GLint) texUnit->ObjectPlaneT[3];
}
else if (pname==GL_EYE_PLANE) {
params[0] = (GLint) texUnit->EyePlaneT[0];
params[1] = (GLint) texUnit->EyePlaneT[1];
params[2] = (GLint) texUnit->EyePlaneT[2];
params[3] = (GLint) texUnit->EyePlaneT[3];
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
return;
}
break;
case GL_R:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = texUnit->GenModeR;
}
else if (pname==GL_OBJECT_PLANE) {
params[0] = (GLint) texUnit->ObjectPlaneR[0];
params[1] = (GLint) texUnit->ObjectPlaneR[1];
params[2] = (GLint) texUnit->ObjectPlaneR[2];
params[3] = (GLint) texUnit->ObjectPlaneR[3];
}
else if (pname==GL_EYE_PLANE) {
params[0] = (GLint) texUnit->EyePlaneR[0];
params[1] = (GLint) texUnit->EyePlaneR[1];
params[2] = (GLint) texUnit->EyePlaneR[2];
params[3] = (GLint) texUnit->EyePlaneR[3];
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
return;
}
break;
case GL_Q:
if (pname==GL_TEXTURE_GEN_MODE) {
params[0] = texUnit->GenModeQ;
}
else if (pname==GL_OBJECT_PLANE) {
params[0] = (GLint) texUnit->ObjectPlaneQ[0];
params[1] = (GLint) texUnit->ObjectPlaneQ[1];
params[2] = (GLint) texUnit->ObjectPlaneQ[2];
params[3] = (GLint) texUnit->ObjectPlaneQ[3];
}
else if (pname==GL_EYE_PLANE) {
params[0] = (GLint) texUnit->EyePlaneQ[0];
params[1] = (GLint) texUnit->EyePlaneQ[1];
params[2] = (GLint) texUnit->EyePlaneQ[2];
params[3] = (GLint) texUnit->EyePlaneQ[3];
}
else {
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" );
return;
}
break;
default:
_mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(coord)" );
return;
}
}
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