1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/* $Id: t_vb_texmat.c,v 1.8 2002/01/22 14:35:17 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
*
* Copyright (C) 1999-2001 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 <keithw@valinux.com>
*/
#include "glheader.h"
#include "colormac.h"
#include "context.h"
#include "macros.h"
#include "mem.h"
#include "mmath.h"
#include "mtypes.h"
#include "math/m_xform.h"
#include "t_context.h"
#include "t_pipeline.h"
/* 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_UNITS];
};
#define TEXMAT_STAGE_DATA(stage) ((struct texmat_stage_data *)stage->privatePtr)
static void check_texmat( GLcontext *ctx, struct gl_pipeline_stage *stage )
{
GLuint i;
stage->active = 0;
if (ctx->Texture._TexMatEnabled && !ctx->VertexProgram.Enabled) {
GLuint flags = 0;
for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++)
if (ctx->Texture._TexMatEnabled & ENABLE_TEXMAT(i))
flags |= VERT_BIT_TEX(i);
stage->active = 1;
stage->inputs = flags;
stage->outputs = flags;
}
}
static GLboolean run_texmat_stage( GLcontext *ctx,
struct gl_pipeline_stage *stage )
{
struct texmat_stage_data *store = TEXMAT_STAGE_DATA(stage);
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
GLuint i;
/* 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.MaxTextureUnits ; i++)
if (ctx->Texture._TexMatEnabled & ENABLE_TEXMAT(i)) {
if (stage->changed_inputs & VERT_BIT_TEX(i))
(void) TransformRaw( &store->texcoord[i],
ctx->TextureMatrixStack[i].Top,
VB->TexCoordPtr[i]);
VB->TexCoordPtr[i] = &store->texcoord[i];
}
return GL_TRUE;
}
/* Called the first time stage->run() is invoked.
*/
static GLboolean alloc_texmat_data( GLcontext *ctx,
struct gl_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;
for (i = 0 ; i < ctx->Const.MaxTextureUnits ; i++)
_mesa_vector4f_alloc( &store->texcoord[i], 0, VB->Size, 32 );
/* Now run the stage.
*/
stage->run = run_texmat_stage;
return stage->run( ctx, stage );
}
static void free_texmat_data( struct gl_pipeline_stage *stage )
{
struct texmat_stage_data *store = TEXMAT_STAGE_DATA(stage);
GLuint i;
if (store) {
for (i = 0 ; i < MAX_TEXTURE_UNITS ; i++)
if (store->texcoord[i].data)
_mesa_vector4f_free( &store->texcoord[i] );
FREE( store );
stage->privatePtr = 0;
}
}
const struct gl_pipeline_stage _tnl_texture_transform_stage =
{
"texture transform", /* name */
_NEW_TEXTURE|_NEW_TEXTURE_MATRIX, /* check_state */
_NEW_TEXTURE|_NEW_TEXTURE_MATRIX, /* run_state */
GL_FALSE, /* active? */
0, /* inputs */
0, /* outputs */
0, /* changed_inputs */
NULL, /* private data */
free_texmat_data, /* destructor */
check_texmat, /* check */
alloc_texmat_data, /* run -- initially set to init */
};
|
