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| 1901 | serge | 1 | /* |
| 2 | * Mesa 3-D graphics library |
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| 3 | * Version: 6.5 |
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| 4 | * |
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| 5 | * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. |
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| 6 | * |
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| 7 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 8 | * copy of this software and associated documentation files (the "Software"), |
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| 9 | * to deal in the Software without restriction, including without limitation |
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| 10 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 11 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 12 | * Software is furnished to do so, subject to the following conditions: |
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| 13 | * |
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| 14 | * The above copyright notice and this permission notice shall be included |
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| 15 | * in all copies or substantial portions of the Software. |
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| 16 | * |
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| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 18 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 20 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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| 21 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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| 22 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 23 | * |
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| 24 | * Authors: |
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| 25 | * Keith Whitwell |
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| 26 | */ |
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| 27 | |||
| 28 | |||
| 29 | #include "main/glheader.h" |
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| 30 | #include "main/colormac.h" |
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| 31 | #include "main/macros.h" |
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| 32 | #include "main/imports.h" |
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| 33 | #include "main/mtypes.h" |
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| 34 | |||
| 35 | #include "math/m_xform.h" |
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| 36 | |||
| 37 | #include "t_context.h" |
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| 38 | #include "t_pipeline.h" |
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| 39 | |||
| 40 | /* Is there any real benefit seperating texmat from texgen? It means |
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| 41 | * we need two lots of intermediate storage. Any changes to |
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| 42 | * _NEW_TEXTURE will invalidate both sets -- it's only on changes to |
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| 43 | * *only* _NEW_TEXTURE_MATRIX that texgen survives but texmat doesn't. |
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| 44 | * |
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| 45 | * However, the seperation of this code from the complex texgen stuff |
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| 46 | * is very appealing. |
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| 47 | */ |
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| 48 | struct texmat_stage_data { |
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| 49 | GLvector4f texcoord[MAX_TEXTURE_COORD_UNITS]; |
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| 50 | }; |
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| 51 | |||
| 52 | #define TEXMAT_STAGE_DATA(stage) ((struct texmat_stage_data *)stage->privatePtr) |
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| 53 | |||
| 54 | |||
| 55 | |||
| 56 | static GLboolean run_texmat_stage( struct gl_context *ctx, |
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| 57 | struct tnl_pipeline_stage *stage ) |
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| 58 | { |
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| 59 | struct texmat_stage_data *store = TEXMAT_STAGE_DATA(stage); |
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| 60 | struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; |
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| 61 | GLuint i; |
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| 62 | |||
| 63 | if (!ctx->Texture._TexMatEnabled || ctx->VertexProgram._Current) |
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| 64 | return GL_TRUE; |
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| 65 | |||
| 66 | /* ENABLE_TEXMAT implies that the texture matrix is not the |
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| 67 | * identity, so we don't have to check that here. |
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| 68 | */ |
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| 69 | for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) { |
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| 70 | if (ctx->Texture._TexMatEnabled & ENABLE_TEXMAT(i)) { |
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| 71 | (void) TransformRaw( &store->texcoord[i], |
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| 72 | ctx->TextureMatrixStack[i].Top, |
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| 73 | VB->AttribPtr[_TNL_ATTRIB_TEX0 + i]); |
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| 74 | |||
| 75 | VB->AttribPtr[VERT_ATTRIB_TEX0+i] = &store->texcoord[i]; |
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| 76 | } |
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| 77 | } |
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| 78 | |||
| 79 | return GL_TRUE; |
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| 80 | } |
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| 81 | |||
| 82 | |||
| 83 | /* Called the first time stage->run() is invoked. |
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| 84 | */ |
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| 85 | static GLboolean alloc_texmat_data( struct gl_context *ctx, |
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| 86 | struct tnl_pipeline_stage *stage ) |
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| 87 | { |
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| 88 | struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb; |
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| 89 | struct texmat_stage_data *store; |
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| 90 | GLuint i; |
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| 91 | |||
| 92 | stage->privatePtr = CALLOC(sizeof(*store)); |
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| 93 | store = TEXMAT_STAGE_DATA(stage); |
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| 94 | if (!store) |
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| 95 | return GL_FALSE; |
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| 96 | |||
| 97 | for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) |
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| 98 | _mesa_vector4f_alloc( &store->texcoord[i], 0, VB->Size, 32 ); |
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| 99 | |||
| 100 | return GL_TRUE; |
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| 101 | } |
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| 102 | |||
| 103 | |||
| 104 | static void free_texmat_data( struct tnl_pipeline_stage *stage ) |
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| 105 | { |
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| 106 | struct texmat_stage_data *store = TEXMAT_STAGE_DATA(stage); |
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| 107 | GLuint i; |
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| 108 | |||
| 109 | if (store) { |
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| 110 | for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) |
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| 111 | if (store->texcoord[i].data) |
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| 112 | _mesa_vector4f_free( &store->texcoord[i] ); |
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| 113 | FREE( store ); |
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| 114 | stage->privatePtr = NULL; |
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| 115 | } |
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| 116 | } |
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| 117 | |||
| 118 | |||
| 119 | |||
| 120 | const struct tnl_pipeline_stage _tnl_texture_transform_stage = |
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| 121 | { |
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| 122 | "texture transform", /* name */ |
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| 123 | NULL, /* private data */ |
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| 124 | alloc_texmat_data, |
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| 125 | free_texmat_data, /* destructor */ |
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| 126 | NULL, |
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| 127 | run_texmat_stage, |
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| 128 | }; |