1 /**
2 * \file texstate.h
3 * Texture state management.
4 */
5
6 /*
7 * Mesa 3-D graphics library
8 * Version: 7.1
9 *
10 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
11 *
12 * Permission is hereby granted, free of charge, to any person obtaining a
13 * copy of this software and associated documentation files (the "Software"),
14 * to deal in the Software without restriction, including without limitation
15 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
16 * and/or sell copies of the Software, and to permit persons to whom the
17 * Software is furnished to do so, subject to the following conditions:
18 *
19 * The above copyright notice and this permission notice shall be included
20 * in all copies or substantial portions of the Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
23 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
25 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
26 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
27 * CONNECTION WITH THE SOFTWARE OR THE USE OR 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 */
43 static inline struct gl_texture_unit *
_mesa_get_current_tex_unit(struct gl_context * ctx)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
51 extern void
52 _mesa_copy_texture_state( const struct gl_context *src, struct gl_context *dst );
53
54 extern void
55 _mesa_print_texunit_state( struct gl_context *ctx, GLuint unit );
56
57
58
59 /**
60 * \name Called from API
61 */
62 /*@{*/
63
64 extern void GLAPIENTRY
65 _mesa_ActiveTextureARB( GLenum target );
66
67 extern void GLAPIENTRY
68 _mesa_ClientActiveTextureARB( GLenum target );
69
70 /*@}*/
71
72
73 /**
74 * \name Initialization, state maintenance
75 */
76 /*@{*/
77
78 extern void
79 _mesa_update_texture( struct gl_context *ctx, GLuint new_state );
80
81 extern GLboolean
82 _mesa_init_texture( struct gl_context *ctx );
83
84 extern void
85 _mesa_free_texture_data( struct gl_context *ctx );
86
87 extern void
88 _mesa_update_default_objects_texture(struct gl_context *ctx);
89
90 /*@}*/
91
92 #endif
93