0,0 → 1,128 |
/* |
* Mesa 3-D graphics library |
* Version: 6.5 |
* |
* 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 |
* 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. |
* |
* Authors: |
* Keith Whitwell <keith@tungstengraphics.com> |
*/ |
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#include "main/glheader.h" |
#include "main/colormac.h" |
#include "main/macros.h" |
#include "main/imports.h" |
#include "main/mtypes.h" |
|
#include "math/m_xform.h" |
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#include "t_context.h" |
#include "t_pipeline.h" |
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/* 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]; |
}; |
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#define TEXMAT_STAGE_DATA(stage) ((struct texmat_stage_data *)stage->privatePtr) |
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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; |
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/* 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]; |
} |
} |
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return GL_TRUE; |
} |
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/* 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(sizeof(*store)); |
store = TEXMAT_STAGE_DATA(stage); |
if (!store) |
return GL_FALSE; |
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for (i = 0 ; i < ctx->Const.MaxTextureCoordUnits ; i++) |
_mesa_vector4f_alloc( &store->texcoord[i], 0, VB->Size, 32 ); |
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return GL_TRUE; |
} |
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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; |
} |
} |
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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, |
}; |