2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
25 * Keith Whitwell <keithw@vmware.com>
29 #include "main/glheader.h"
30 #include "main/macros.h"
31 #include "main/imports.h"
32 #include "main/mtypes.h"
34 #include "math/m_xform.h"
36 #include "t_context.h"
37 #include "t_pipeline.h"
39 /* Is there any real benefit seperating texmat from texgen? It means
40 * we need two lots of intermediate storage. Any changes to
41 * _NEW_TEXTURE will invalidate both sets -- it's only on changes to
42 * *only* _NEW_TEXTURE_MATRIX that texgen survives but texmat doesn't.
44 * However, the seperation of this code from the complex texgen stuff
47 struct texmat_stage_data
{
48 GLvector4f texcoord
[MAX_TEXTURE_COORD_UNITS
];
51 #define TEXMAT_STAGE_DATA(stage) ((struct texmat_stage_data *)stage->privatePtr)
55 static GLboolean
run_texmat_stage( struct gl_context
*ctx
,
56 struct tnl_pipeline_stage
*stage
)
58 struct texmat_stage_data
*store
= TEXMAT_STAGE_DATA(stage
);
59 struct vertex_buffer
*VB
= &TNL_CONTEXT(ctx
)->vb
;
62 if (!ctx
->Texture
._TexMatEnabled
|| ctx
->VertexProgram
._Current
)
65 /* ENABLE_TEXMAT implies that the texture matrix is not the
66 * identity, so we don't have to check that here.
68 for (i
= 0 ; i
< ctx
->Const
.MaxTextureCoordUnits
; i
++) {
69 if (ctx
->Texture
._TexMatEnabled
& ENABLE_TEXMAT(i
)) {
70 (void) TransformRaw( &store
->texcoord
[i
],
71 ctx
->TextureMatrixStack
[i
].Top
,
72 VB
->AttribPtr
[_TNL_ATTRIB_TEX0
+ i
]);
74 VB
->AttribPtr
[VERT_ATTRIB_TEX0
+i
] = &store
->texcoord
[i
];
82 /* Called the first time stage->run() is invoked.
84 static GLboolean
alloc_texmat_data( struct gl_context
*ctx
,
85 struct tnl_pipeline_stage
*stage
)
87 struct vertex_buffer
*VB
= &TNL_CONTEXT(ctx
)->vb
;
88 struct texmat_stage_data
*store
;
91 stage
->privatePtr
= calloc(1, sizeof(*store
));
92 store
= TEXMAT_STAGE_DATA(stage
);
96 for (i
= 0 ; i
< ctx
->Const
.MaxTextureCoordUnits
; i
++)
97 _mesa_vector4f_alloc( &store
->texcoord
[i
], 0, VB
->Size
, 32 );
103 static void free_texmat_data( struct tnl_pipeline_stage
*stage
)
105 struct texmat_stage_data
*store
= TEXMAT_STAGE_DATA(stage
);
109 for (i
= 0; i
< MAX_TEXTURE_COORD_UNITS
; i
++)
110 if (store
->texcoord
[i
].data
)
111 _mesa_vector4f_free( &store
->texcoord
[i
] );
113 stage
->privatePtr
= NULL
;
119 const struct tnl_pipeline_stage _tnl_texture_transform_stage
=
121 "texture transform", /* name */
122 NULL
, /* private data */
124 free_texmat_data
, /* destructor */