| /* |
| * Mesa 3-D graphics library |
| * |
| * Copyright (C) 1999-2006 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 |
| * 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. |
| * |
| * Authors: |
| * Keith Whitwell <keithw@vmware.com> |
| */ |
| |
| |
| #include "main/glheader.h" |
| #include "main/macros.h" |
| |
| #include "main/mtypes.h" |
| |
| #include "math/m_xform.h" |
| |
| #include "t_context.h" |
| #include "t_pipeline.h" |
| |
| /* Is there any real benefit seperating texmat from texgen? It means |
| * we need two lots of intermediate storage. Any changes to |
| * _NEW_TEXTURE will invalidate both sets -- it's only on changes to |
| * *only* _NEW_TEXTURE_MATRIX that texgen survives but texmat doesn't. |
| * |
| * However, the seperation of this code from the complex texgen stuff |
| * is very appealing. |
| */ |
| struct texmat_stage_data { |
| GLvector4f texcoord[MAX_TEXTURE_COORD_UNITS]; |
| }; |
| |
| #define TEXMAT_STAGE_DATA(stage) ((struct texmat_stage_data *)stage->privatePtr) |
| |
| |
| |
| static GLboolean run_texmat_stage( struct gl_context *ctx, |
| struct tnl_pipeline_stage *stage ) |
| { |
| struct texmat_stage_data *store = TEXMAT_STAGE_DATA(stage); |
| struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; |
| GLuint i; |
| |
| if (!ctx->Texture._TexMatEnabled || ctx->VertexProgram._Current) |
| return GL_TRUE; |
| |
| /* ENABLE_TEXMAT implies that the texture matrix is not the |
| * identity, so we don't have to check that here. |
| */ |
| for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) { |
| if (ctx->Texture._TexMatEnabled & ENABLE_TEXMAT(i)) { |
| (void) TransformRaw( &store->texcoord[i], |
| ctx->TextureMatrixStack[i].Top, |
| VB->AttribPtr[_TNL_ATTRIB_TEX0 + i]); |
| |
| VB->AttribPtr[VERT_ATTRIB_TEX0+i] = &store->texcoord[i]; |
| } |
| } |
| |
| return GL_TRUE; |
| } |
| |
| |
| /* Called the first time stage->run() is invoked. |
| */ |
| static GLboolean alloc_texmat_data( struct gl_context *ctx, |
| struct tnl_pipeline_stage *stage ) |
| { |
| struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; |
| struct texmat_stage_data *store; |
| GLuint i; |
| |
| stage->privatePtr = calloc(1, sizeof(*store)); |
| store = TEXMAT_STAGE_DATA(stage); |
| if (!store) |
| return GL_FALSE; |
| |
| for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) |
| _mesa_vector4f_alloc( &store->texcoord[i], 0, VB->Size, 32 ); |
| |
| return GL_TRUE; |
| } |
| |
| |
| static void free_texmat_data( struct tnl_pipeline_stage *stage ) |
| { |
| struct texmat_stage_data *store = TEXMAT_STAGE_DATA(stage); |
| GLuint i; |
| |
| if (store) { |
| for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) |
| if (store->texcoord[i].data) |
| _mesa_vector4f_free( &store->texcoord[i] ); |
| free( store ); |
| stage->privatePtr = NULL; |
| } |
| } |
| |
| |
| |
| const struct tnl_pipeline_stage _tnl_texture_transform_stage = |
| { |
| "texture transform", /* name */ |
| NULL, /* private data */ |
| alloc_texmat_data, |
| free_texmat_data, /* destructor */ |
| NULL, |
| run_texmat_stage, |
| }; |