texstate.h revision 848b8605 
1/**
2 * \file texstate.h
3 * Texture state management.
4 */
5
6/*
7 * Mesa 3-D graphics library
8 *
9 * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the "Software"),
13 * to deal in the Software without restriction, including without limitation
14 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 * and/or sell copies of the Software, and to permit persons to whom the
16 * Software is furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice shall be included
19 * in all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
24 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
25 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
26 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
27 * OTHER DEALINGS IN THE SOFTWARE.
28 */
29
30
31#ifndef TEXSTATE_H
32#define TEXSTATE_H
33
34
35#include "compiler.h"
36#include "mtypes.h"
37
38
39/**
40 * Return pointer to current texture unit.
41 * This the texture unit set by glActiveTexture(), not glClientActiveTexture().
42 */
43static inline struct gl_texture_unit *
44_mesa_get_current_tex_unit(struct gl_context *ctx)
45{
46   ASSERT(ctx->Texture.CurrentUnit < Elements(ctx->Texture.Unit));
47   return &(ctx->Texture.Unit[ctx->Texture.CurrentUnit]);
48}
49
50
51extern void
52_mesa_copy_texture_state( const struct gl_context *src, struct gl_context *dst );
53
54extern void
55_mesa_print_texunit_state( struct gl_context *ctx, GLuint unit );
56
57
58
59/**
60 * \name Called from API
61 */
62/*@{*/
63
64extern void GLAPIENTRY
65_mesa_ActiveTexture( GLenum target );
66
67extern void GLAPIENTRY
68_mesa_ClientActiveTexture( GLenum target );
69
70/*@}*/
71
72
73/**
74 * \name Initialization, state maintenance
75 */
76/*@{*/
77
78extern void
79_mesa_update_texture( struct gl_context *ctx, GLuint new_state );
80
81extern GLboolean
82_mesa_init_texture( struct gl_context *ctx );
83
84extern void
85_mesa_free_texture_data( struct gl_context *ctx );
86
87extern void
88_mesa_update_default_objects_texture(struct gl_context *ctx);
89
90/*@}*/
91
92#endif
93