| 0,0 → 1,400 |
|---|
| /* |
| * 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 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 "main/texstate.h" |
| #include "math/m_matrix.h" |
| #include "main/dispatch.h" |
| |
| |
| #if FEATURE_texgen |
| |
| |
| /** |
| * Return texgen state for given coordinate |
| */ |
| static struct gl_texgen * |
| get_texgen(struct gl_texture_unit *texUnit, GLenum coord) |
| { |
| switch (coord) { |
| case GL_S: |
| return &texUnit->GenS; |
| case GL_T: |
| return &texUnit->GenT; |
| case GL_R: |
| return &texUnit->GenR; |
| case GL_Q: |
| return &texUnit->GenQ; |
| default: |
| return NULL; |
| } |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_TexGenfv( GLenum coord, GLenum pname, const GLfloat *params ) |
| { |
| struct gl_texture_unit *texUnit; |
| struct gl_texgen *texgen; |
| GET_CURRENT_CONTEXT(ctx); |
| 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 = _mesa_get_current_tex_unit(ctx); |
| |
| texgen = get_texgen(texUnit, coord); |
| if (!texgen) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glTexGen(coord)"); |
| return; |
| } |
| |
| switch (pname) { |
| case GL_TEXTURE_GEN_MODE: |
| { |
| GLenum mode = (GLenum) (GLint) params[0]; |
| GLbitfield bit = 0x0; |
| if (texgen->Mode == mode) |
| return; |
| switch (mode) { |
| case GL_OBJECT_LINEAR: |
| bit = TEXGEN_OBJ_LINEAR; |
| break; |
| case GL_EYE_LINEAR: |
| bit = TEXGEN_EYE_LINEAR; |
| break; |
| case GL_SPHERE_MAP: |
| if (coord == GL_S || coord == GL_T) |
| bit = TEXGEN_SPHERE_MAP; |
| break; |
| case GL_REFLECTION_MAP_NV: |
| if (coord != GL_Q) |
| bit = TEXGEN_REFLECTION_MAP_NV; |
| break; |
| case GL_NORMAL_MAP_NV: |
| if (coord != GL_Q) |
| bit = TEXGEN_NORMAL_MAP_NV; |
| break; |
| default: |
| ; /* nop */ |
| } |
| if (!bit) { |
| _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" ); |
| return; |
| } |
| FLUSH_VERTICES(ctx, _NEW_TEXTURE); |
| texgen->Mode = mode; |
| texgen->_ModeBit = bit; |
| } |
| break; |
| |
| case GL_OBJECT_PLANE: |
| { |
| if (TEST_EQ_4V(texgen->ObjectPlane, params)) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_TEXTURE); |
| COPY_4FV(texgen->ObjectPlane, params); |
| } |
| break; |
| |
| case 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(texgen->EyePlane, tmp)) |
| return; |
| FLUSH_VERTICES(ctx, _NEW_TEXTURE); |
| COPY_4FV(texgen->EyePlane, tmp); |
| } |
| break; |
| |
| default: |
| _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(pname)" ); |
| return; |
| } |
| |
| if (ctx->Driver.TexGen) |
| ctx->Driver.TexGen( ctx, coord, pname, params ); |
| } |
| |
| |
| static 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); |
| } |
| |
| |
| static void GLAPIENTRY |
| _mesa_TexGend(GLenum coord, GLenum pname, GLdouble param ) |
| { |
| GLfloat p[4]; |
| p[0] = (GLfloat) param; |
| p[1] = p[2] = p[3] = 0.0F; |
| _mesa_TexGenfv( coord, pname, p ); |
| } |
| |
| #if FEATURE_ES1 |
| |
| void GLAPIENTRY |
| _es_GetTexGenfv(GLenum coord, GLenum pname, GLfloat *params) |
| { |
| ASSERT(coord == GL_TEXTURE_GEN_STR_OES); |
| _mesa_GetTexGenfv(GL_S, pname, params); |
| } |
| |
| |
| void GLAPIENTRY |
| _es_TexGenf(GLenum coord, GLenum pname, GLfloat param) |
| { |
| ASSERT(coord == GL_TEXTURE_GEN_STR_OES); |
| /* set S, T, and R at the same time */ |
| _mesa_TexGenf(GL_S, pname, param); |
| _mesa_TexGenf(GL_T, pname, param); |
| _mesa_TexGenf(GL_R, pname, param); |
| } |
| |
| |
| void GLAPIENTRY |
| _es_TexGenfv(GLenum coord, GLenum pname, const GLfloat *params) |
| { |
| ASSERT(coord == GL_TEXTURE_GEN_STR_OES); |
| /* set S, T, and R at the same time */ |
| _mesa_TexGenfv(GL_S, pname, params); |
| _mesa_TexGenfv(GL_T, pname, params); |
| _mesa_TexGenfv(GL_R, pname, params); |
| } |
| |
| #endif |
| |
| static 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 ) |
| { |
| GLfloat p[4]; |
| p[0] = param; |
| p[1] = p[2] = p[3] = 0.0F; |
| _mesa_TexGenfv(coord, pname, p); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_TexGeni( GLenum coord, GLenum pname, GLint param ) |
| { |
| GLint p[4]; |
| p[0] = param; |
| p[1] = p[2] = p[3] = 0; |
| _mesa_TexGeniv( coord, pname, p ); |
| } |
| |
| |
| |
| static void GLAPIENTRY |
| _mesa_GetTexGendv( GLenum coord, GLenum pname, GLdouble *params ) |
| { |
| struct gl_texture_unit *texUnit; |
| struct gl_texgen *texgen; |
| 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 = _mesa_get_current_tex_unit(ctx); |
| |
| texgen = get_texgen(texUnit, coord); |
| if (!texgen) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexGendv(coord)"); |
| return; |
| } |
| |
| switch (pname) { |
| case GL_TEXTURE_GEN_MODE: |
| params[0] = ENUM_TO_DOUBLE(texgen->Mode); |
| break; |
| case GL_OBJECT_PLANE: |
| COPY_4V(params, texgen->ObjectPlane); |
| break; |
| case GL_EYE_PLANE: |
| COPY_4V(params, texgen->EyePlane); |
| break; |
| default: |
| _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGendv(pname)" ); |
| } |
| } |
| |
| |
| |
| void GLAPIENTRY |
| _mesa_GetTexGenfv( GLenum coord, GLenum pname, GLfloat *params ) |
| { |
| struct gl_texture_unit *texUnit; |
| struct gl_texgen *texgen; |
| 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 = _mesa_get_current_tex_unit(ctx); |
| |
| texgen = get_texgen(texUnit, coord); |
| if (!texgen) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexGenfv(coord)"); |
| return; |
| } |
| |
| switch (pname) { |
| case GL_TEXTURE_GEN_MODE: |
| params[0] = ENUM_TO_FLOAT(texgen->Mode); |
| break; |
| case GL_OBJECT_PLANE: |
| COPY_4V(params, texgen->ObjectPlane); |
| break; |
| case GL_EYE_PLANE: |
| COPY_4V(params, texgen->EyePlane); |
| break; |
| default: |
| _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" ); |
| } |
| } |
| |
| |
| |
| static void GLAPIENTRY |
| _mesa_GetTexGeniv( GLenum coord, GLenum pname, GLint *params ) |
| { |
| struct gl_texture_unit *texUnit; |
| struct gl_texgen *texgen; |
| 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 = _mesa_get_current_tex_unit(ctx); |
| |
| texgen = get_texgen(texUnit, coord); |
| if (!texgen) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetTexGeniv(coord)"); |
| return; |
| } |
| |
| switch (pname) { |
| case GL_TEXTURE_GEN_MODE: |
| params[0] = texgen->Mode; |
| break; |
| case GL_OBJECT_PLANE: |
| params[0] = (GLint) texgen->ObjectPlane[0]; |
| params[1] = (GLint) texgen->ObjectPlane[1]; |
| params[2] = (GLint) texgen->ObjectPlane[2]; |
| params[3] = (GLint) texgen->ObjectPlane[3]; |
| break; |
| case GL_EYE_PLANE: |
| params[0] = (GLint) texgen->EyePlane[0]; |
| params[1] = (GLint) texgen->EyePlane[1]; |
| params[2] = (GLint) texgen->EyePlane[2]; |
| params[3] = (GLint) texgen->EyePlane[3]; |
| break; |
| default: |
| _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(pname)" ); |
| } |
| } |
| |
| |
| void |
| _mesa_init_texgen_dispatch(struct _glapi_table *disp) |
| { |
| SET_GetTexGendv(disp, _mesa_GetTexGendv); |
| SET_GetTexGenfv(disp, _mesa_GetTexGenfv); |
| SET_GetTexGeniv(disp, _mesa_GetTexGeniv); |
| SET_TexGend(disp, _mesa_TexGend); |
| SET_TexGendv(disp, _mesa_TexGendv); |
| SET_TexGenf(disp, _mesa_TexGenf); |
| SET_TexGenfv(disp, _mesa_TexGenfv); |
| SET_TexGeni(disp, _mesa_TexGeni); |
| SET_TexGeniv(disp, _mesa_TexGeniv); |
| } |
| |
| |
| #endif /* FEATURE_texgen */ |