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
{
49 GLvector4f texcoord
[MAX_TEXTURE_COORD_UNITS
];
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
;
63 if (!ctx
->Texture
._TexMatEnabled
|| ctx
->VertexProgram
._Current
)
66 /* ENABLE_TEXMAT implies that the texture matrix is not the
67 * identity, so we don't have to check that here.
69 for (i
= 0 ; i
< ctx
->Const
.MaxTextureCoordUnits
; i
++) {
70 if (ctx
->Texture
._TexMatEnabled
& ENABLE_TEXMAT(i
)) {
71 (void) TransformRaw( &store
->texcoord
[i
],
72 ctx
->TextureMatrixStack
[i
].Top
,
73 VB
->AttribPtr
[_TNL_ATTRIB_TEX0
+ i
]);
75 VB
->AttribPtr
[VERT_ATTRIB_TEX0
+i
] = &store
->texcoord
[i
];
83 /* Called the first time stage->run() is invoked.
85 static GLboolean
alloc_texmat_data( struct gl_context
*ctx
,
86 struct tnl_pipeline_stage
*stage
)
88 struct vertex_buffer
*VB
= &TNL_CONTEXT(ctx
)->vb
;
89 struct texmat_stage_data
*store
;
92 stage
->privatePtr
= CALLOC(sizeof(*store
));
93 store
= TEXMAT_STAGE_DATA(stage
);
97 for (i
= 0 ; i
< ctx
->Const
.MaxTextureCoordUnits
; i
++)
98 _mesa_vector4f_alloc( &store
->texcoord
[i
], 0, VB
->Size
, 32 );
104 static void free_texmat_data( struct tnl_pipeline_stage
*stage
)
106 struct texmat_stage_data
*store
= TEXMAT_STAGE_DATA(stage
);
110 for (i
= 0; i
< MAX_TEXTURE_COORD_UNITS
; i
++)
111 if (store
->texcoord
[i
].data
)
112 _mesa_vector4f_free( &store
->texcoord
[i
] );
114 stage
->privatePtr
= NULL
;
120 const struct tnl_pipeline_stage _tnl_texture_transform_stage
=
122 "texture transform", /* name */
123 NULL
, /* private data */
125 free_texmat_data
, /* destructor */