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 if (ctx->Texture.Unit[unit]._Current)
37      return &ctx->Texture.Unit[unit]._Current->Sampler;
38   else
39      return NULL;
40}
41
42
43/** Does the given filter state do mipmap filtering? */
44static inline GLboolean
45_mesa_is_mipmap_filter(const struct gl_sampler_object *samp)
46{
47   return samp->MinFilter != GL_NEAREST && samp->MinFilter != GL_LINEAR;
48}
49
50
51extern void
52_mesa_reference_sampler_object_(struct gl_context *ctx,
53                                struct gl_sampler_object **ptr,
54                                struct gl_sampler_object *samp);
55
56static inline void
57_mesa_reference_sampler_object(struct gl_context *ctx,
58                               struct gl_sampler_object **ptr,
59                               struct gl_sampler_object *samp)
60{
61   if (*ptr != samp)
62      _mesa_reference_sampler_object_(ctx, ptr, samp);
63}
64
65
66extern void
67_mesa_init_sampler_object(struct gl_sampler_object *sampObj, GLuint name);
68
69extern struct gl_sampler_object *
70_mesa_new_sampler_object(struct gl_context *ctx, GLuint name);
71
72extern void
73_mesa_delete_sampler_object(struct gl_context *ctx,
74                            struct gl_sampler_object *sampObj);
75
76extern void
77_mesa_init_sampler_object_functions(struct dd_function_table *driver);
78
79extern void
80_mesa_init_sampler_object_dispatch(struct _glapi_table *disp);
81
82extern void GLAPIENTRY
83_mesa_BindSampler(GLuint unit, GLuint sampler);
84
85extern void GLAPIENTRY
86_mesa_GenSamplers(GLsizei count, GLuint *samplers);
87
88extern void GLAPIENTRY
89_mesa_DeleteSamplers(GLsizei count, const GLuint *samplers);
90
91extern void GLAPIENTRY
92_mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param);
93
94#endif /* SAMPLEROBJ_H */
95