mirror of
https://github.com/reactos/reactos.git
synced 2024-08-20 18:35:32 +00:00
112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/*
|
|
* 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>
|
|
*/
|
|
|
|
#include <precomp.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;
|
|
};
|
|
|
|
#define TEXMAT_STAGE_DATA(stage) ((struct texmat_stage_data *)stage->privatePtr)
|
|
|
|
|
|
|
|
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;
|
|
|
|
if (!ctx->Texture._TexMatEnabled)
|
|
return GL_TRUE;
|
|
|
|
/* ENABLE_TEXMAT implies that the texture matrix is not the
|
|
* identity, so we don't have to check that here.
|
|
*/
|
|
if (ctx->Texture._TexMatEnabled) {
|
|
(void) TransformRaw( &store->texcoord,
|
|
ctx->TextureMatrixStack.Top,
|
|
VB->AttribPtr[_TNL_ATTRIB_TEX]);
|
|
|
|
VB->AttribPtr[VERT_ATTRIB_TEX] = &store->texcoord;
|
|
}
|
|
|
|
return GL_TRUE;
|
|
}
|
|
|
|
|
|
/* 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;
|
|
|
|
stage->privatePtr = CALLOC(sizeof(*store));
|
|
store = TEXMAT_STAGE_DATA(stage);
|
|
if (!store)
|
|
return GL_FALSE;
|
|
|
|
_mesa_vector4f_alloc( &store->texcoord, 0, VB->Size, 32 );
|
|
|
|
return GL_TRUE;
|
|
}
|
|
|
|
|
|
static void free_texmat_data( struct tnl_pipeline_stage *stage )
|
|
{
|
|
struct texmat_stage_data *store = TEXMAT_STAGE_DATA(stage);
|
|
|
|
if (store) {
|
|
if (store->texcoord.data)
|
|
_mesa_vector4f_free( &store->texcoord );
|
|
FREE( store );
|
|
stage->privatePtr = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
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,
|
|
};
|