samplerobj.h revision af69d88d 
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26
27#ifndef SAMPLEROBJ_H
28#define SAMPLEROBJ_H
29
30struct dd_function_table;
31
32static inline struct gl_sampler_object *
33_mesa_get_samplerobj(struct gl_context *ctx, GLuint unit)
34{
35   if (ctx->Texture.Unit[unit].Sampler)
36      return ctx->Texture.Unit[unit].Sampler;
37   else if (ctx->Texture.Unit[unit]._Current)
38      return &ctx->Texture.Unit[unit]._Current->Sampler;
39   else
40      return NULL;
41}
42
43
44/** Does the given filter state do mipmap filtering? */
45static inline GLboolean
46_mesa_is_mipmap_filter(const struct gl_sampler_object *samp)
47{
48   return samp->MinFilter != GL_NEAREST && samp->MinFilter != GL_LINEAR;
49}
50
51
52extern void
53_mesa_reference_sampler_object_(struct gl_context *ctx,
54                                struct gl_sampler_object **ptr,
55                                struct gl_sampler_object *samp);
56
57static inline void
58_mesa_reference_sampler_object(struct gl_context *ctx,
59                               struct gl_sampler_object **ptr,
60                               struct gl_sampler_object *samp)
61{
62   if (*ptr != samp)
63      _mesa_reference_sampler_object_(ctx, ptr, samp);
64}
65
66extern struct gl_sampler_object *
67_mesa_lookup_samplerobj(struct gl_context *ctx, GLuint name);
68
69extern struct gl_sampler_object *
70_mesa_new_sampler_object(struct gl_context *ctx, GLuint name);
71
72extern void
73_mesa_init_sampler_object_functions(struct dd_function_table *driver);
74
75void GLAPIENTRY
76_mesa_GenSamplers(GLsizei count, GLuint *samplers);
77void GLAPIENTRY
78_mesa_DeleteSamplers(GLsizei count, const GLuint *samplers);
79GLboolean GLAPIENTRY
80_mesa_IsSampler(GLuint sampler);
81void GLAPIENTRY
82_mesa_BindSampler(GLuint unit, GLuint sampler);
83void GLAPIENTRY
84_mesa_BindSamplers(GLuint first, GLsizei count, const GLuint *samplers);
85void GLAPIENTRY
86_mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param);
87void GLAPIENTRY
88_mesa_SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param);
89void GLAPIENTRY
90_mesa_SamplerParameteriv(GLuint sampler, GLenum pname, const GLint *params);
91void GLAPIENTRY
92_mesa_SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat *params);
93void GLAPIENTRY
94_mesa_SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint *params);
95void GLAPIENTRY
96_mesa_SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint *params);
97void GLAPIENTRY
98_mesa_GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint *params);
99void GLAPIENTRY
100_mesa_GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat *params);
101void GLAPIENTRY
102_mesa_GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint *params);
103void GLAPIENTRY
104_mesa_GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint *params);
105
106#endif /* SAMPLEROBJ_H */
107