samplerobj.h revision b219b2c310911286f375d6b9967d5fd39ec1188a 
1/*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 2011  VMware, Inc.  All Rights Reserved.
5 *
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:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
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 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
20 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24
25
26#ifndef SAMPLEROBJ_H
27#define SAMPLEROBJ_H
28
29struct dd_function_table;
30
31static inline struct gl_sampler_object *
32_mesa_get_samplerobj(struct gl_context *ctx, GLuint unit)
33{
34   if (ctx->Texture.Unit[unit].Sampler)
35      return ctx->Texture.Unit[unit].Sampler;
36   else
37      return &ctx->Texture.Unit[unit]._Current->Sampler;
38}
39
40
41/** Does the given filter state do mipmap filtering? */
42static inline GLboolean
43_mesa_is_mipmap_filter(const struct gl_sampler_object *samp)
44{
45   return samp->MinFilter != GL_NEAREST && samp->MinFilter != GL_LINEAR;
46}
47
48
49extern void
50_mesa_reference_sampler_object_(struct gl_context *ctx,
51                                struct gl_sampler_object **ptr,
52                                struct gl_sampler_object *samp);
53
54static inline void
55_mesa_reference_sampler_object(struct gl_context *ctx,
56                               struct gl_sampler_object **ptr,
57                               struct gl_sampler_object *samp)
58{
59   if (*ptr != samp)
60      _mesa_reference_sampler_object_(ctx, ptr, samp);
61}
62
63
64extern void
65_mesa_init_sampler_object(struct gl_sampler_object *sampObj, GLuint name);
66
67extern struct gl_sampler_object *
68_mesa_new_sampler_object(struct gl_context *ctx, GLuint name);
69
70extern void
71_mesa_delete_sampler_object(struct gl_context *ctx,
72                            struct gl_sampler_object *sampObj);
73
74extern void
75_mesa_init_sampler_object_functions(struct dd_function_table *driver);
76
77extern void
78_mesa_init_sampler_object_dispatch(struct _glapi_table *disp);
79
80
81#endif /* SAMPLEROBJ_H */
82