/* * Mesa 3-D graphics library * * 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 * THE AUTHORS OR COPYRIGHT HOLDERS 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" /** * Return texgen state for given coordinate */ static struct gl_texgen * get_texgen(struct gl_context *ctx, struct gl_texture_unit *texUnit, GLenum coord) { if (ctx->API == API_OPENGLES) { return (coord == GL_TEXTURE_GEN_STR_OES) ? &texUnit->GenS : NULL; } 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); if (MESA_VERBOSE&(VERBOSE_API|VERBOSE_TEXTURE)) _mesa_debug(ctx, "glTexGen %s %s %.1f(%s)...\n", _mesa_enum_to_string(coord), _mesa_enum_to_string(pname), *params, _mesa_enum_to_string((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(ctx, 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; } if (ctx->API != API_OPENGL_COMPAT && (bit & (TEXGEN_REFLECTION_MAP_NV | TEXGEN_NORMAL_MAP_NV)) == 0) { _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" ); return; } FLUSH_VERTICES(ctx, _NEW_TEXTURE_STATE); texgen->Mode = mode; texgen->_ModeBit = bit; } break; case GL_OBJECT_PLANE: { if (ctx->API != API_OPENGL_COMPAT) { _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" ); return; } if (TEST_EQ_4V(texgen->ObjectPlane, params)) return; FLUSH_VERTICES(ctx, _NEW_TEXTURE_STATE); COPY_4FV(texgen->ObjectPlane, params); } break; case GL_EYE_PLANE: { GLfloat tmp[4]; if (ctx->API != API_OPENGL_COMPAT) { _mesa_error( ctx, GL_INVALID_ENUM, "glTexGenfv(param)" ); return; } /* 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_STATE); 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 ); } 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[4]; p[0] = (GLfloat) param; p[1] = p[2] = p[3] = 0.0F; _mesa_TexGenfv( coord, pname, p ); } void GLAPIENTRY _es_GetTexGenfv(GLenum coord, GLenum pname, GLfloat *params) { _mesa_GetTexGenfv(GL_S, pname, params); } void GLAPIENTRY _es_TexGenf(GLenum coord, GLenum pname, GLfloat param) { if (coord != GL_TEXTURE_GEN_STR_OES) { GET_CURRENT_CONTEXT(ctx); _mesa_error( ctx, GL_INVALID_ENUM, "glTexGen[fx](pname)" ); return; } /* 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) { if (coord != GL_TEXTURE_GEN_STR_OES) { GET_CURRENT_CONTEXT(ctx); _mesa_error( ctx, GL_INVALID_ENUM, "glTexGen[fx]v(pname)" ); return; } /* 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); } 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 ); } void GLAPIENTRY _mesa_GetTexGendv( GLenum coord, GLenum pname, GLdouble *params ) { struct gl_texture_unit *texUnit; struct gl_texgen *texgen; GET_CURRENT_CONTEXT(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(ctx, 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); 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(ctx, 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: if (ctx->API != API_OPENGL_COMPAT) { _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(param)" ); return; } COPY_4V(params, texgen->ObjectPlane); break; case GL_EYE_PLANE: if (ctx->API != API_OPENGL_COMPAT) { _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(param)" ); return; } COPY_4V(params, texgen->EyePlane); break; default: _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGenfv(pname)" ); } } void GLAPIENTRY _mesa_GetTexGeniv( GLenum coord, GLenum pname, GLint *params ) { struct gl_texture_unit *texUnit; struct gl_texgen *texgen; GET_CURRENT_CONTEXT(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(ctx, 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: if (ctx->API != API_OPENGL_COMPAT) { _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(param)" ); return; } 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: if (ctx->API != API_OPENGL_COMPAT) { _mesa_error( ctx, GL_INVALID_ENUM, "glGetTexGeniv(param)" ); return; } 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)" ); } }