2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 * Keith Whitwell <keith@tungstengraphics.com>
29 #include "main/glheader.h"
30 #include "main/colormac.h"
31 #include "main/macros.h"
32 #include "main/imports.h"
33 #include "main/mtypes.h"
35 #include "math/m_xform.h"
37 #include "t_context.h"
38 #include "t_pipeline.h"
40 /* Is there any real benefit seperating texmat from texgen? It means
41 * we need two lots of intermediate storage. Any changes to
42 * _NEW_TEXTURE will invalidate both sets -- it's only on changes to
43 * *only* _NEW_TEXTURE_MATRIX that texgen survives but texmat doesn't.
45 * However, the seperation of this code from the complex texgen stuff
48 struct texmat_stage_data
{
52 #define TEXMAT_STAGE_DATA(stage) ((struct texmat_stage_data *)stage->privatePtr)
56 static GLboolean
run_texmat_stage( struct gl_context
*ctx
,
57 struct tnl_pipeline_stage
*stage
)
59 struct texmat_stage_data
*store
= TEXMAT_STAGE_DATA(stage
);
60 struct vertex_buffer
*VB
= &TNL_CONTEXT(ctx
)->vb
;
62 if (!ctx
->Texture
._TexMatEnabled
)
65 /* ENABLE_TEXMAT implies that the texture matrix is not the
66 * identity, so we don't have to check that here.
68 if (ctx
->Texture
._TexMatEnabled
) {
69 (void) TransformRaw( &store
->texcoord
,
70 ctx
->TextureMatrixStack
.Top
,
71 VB
->AttribPtr
[_TNL_ATTRIB_TEX
]);
73 VB
->AttribPtr
[VERT_ATTRIB_TEX
] = &store
->texcoord
;
80 /* Called the first time stage->run() is invoked.
82 static GLboolean
alloc_texmat_data( struct gl_context
*ctx
,
83 struct tnl_pipeline_stage
*stage
)
85 struct vertex_buffer
*VB
= &TNL_CONTEXT(ctx
)->vb
;
86 struct texmat_stage_data
*store
;
88 stage
->privatePtr
= CALLOC(sizeof(*store
));
89 store
= TEXMAT_STAGE_DATA(stage
);
93 _mesa_vector4f_alloc( &store
->texcoord
, 0, VB
->Size
, 32 );
99 static void free_texmat_data( struct tnl_pipeline_stage
*stage
)
101 struct texmat_stage_data
*store
= TEXMAT_STAGE_DATA(stage
);
104 if (store
->texcoord
.data
)
105 _mesa_vector4f_free( &store
->texcoord
);
107 stage
->privatePtr
= NULL
;
113 const struct tnl_pipeline_stage _tnl_texture_transform_stage
=
115 "texture transform", /* name */
116 NULL
, /* private data */
118 free_texmat_data
, /* destructor */