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
30#include "mtypes.h"
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
36struct dd_function_table;
37
38static inline struct gl_sampler_object *
39_mesa_get_samplerobj(struct gl_context *ctx, GLuint unit)
40{
41   if (ctx->Texture.Unit[unit].Sampler)
42      return ctx->Texture.Unit[unit].Sampler;
43   else if (ctx->Texture.Unit[unit]._Current)
44      return &ctx->Texture.Unit[unit]._Current->Sampler;
45   else
46      return NULL;
47}
48
49
50/** Does the given filter state do mipmap filtering? */
51static inline GLboolean
52_mesa_is_mipmap_filter(const struct gl_sampler_object *samp)
53{
54   return samp->MinFilter != GL_NEAREST && samp->MinFilter != GL_LINEAR;
55}
56
57
58extern void
59_mesa_reference_sampler_object_(struct gl_context *ctx,
60                                struct gl_sampler_object **ptr,
61                                struct gl_sampler_object *samp);
62
63static inline void
64_mesa_reference_sampler_object(struct gl_context *ctx,
65                               struct gl_sampler_object **ptr,
66                               struct gl_sampler_object *samp)
67{
68   if (*ptr != samp)
69      _mesa_reference_sampler_object_(ctx, ptr, samp);
70}
71
72extern struct gl_sampler_object *
73_mesa_lookup_samplerobj(struct gl_context *ctx, GLuint name);
74
75extern struct gl_sampler_object *
76_mesa_new_sampler_object(struct gl_context *ctx, GLuint name);
77
78extern void
79_mesa_init_sampler_object_functions(struct dd_function_table *driver);
80
81extern void
82_mesa_set_sampler_wrap(struct gl_context *ctx, struct gl_sampler_object *samp,
83                       GLenum s, GLenum t, GLenum r);
84
85extern void
86_mesa_set_sampler_filters(struct gl_context *ctx,
87                          struct gl_sampler_object *samp,
88                          GLenum min_filter, GLenum mag_filter);
89
90extern void
91_mesa_set_sampler_srgb_decode(struct gl_context *ctx,
92                              struct gl_sampler_object *samp, GLenum param);
93
94extern void
95_mesa_bind_sampler(struct gl_context *ctx, GLuint unit,
96                   struct gl_sampler_object *sampObj);
97
98void GLAPIENTRY
99_mesa_GenSamplers(GLsizei count, GLuint *samplers);
100void GLAPIENTRY
101_mesa_CreateSamplers(GLsizei count, GLuint *samplers);
102void GLAPIENTRY
103_mesa_DeleteSamplers(GLsizei count, const GLuint *samplers);
104GLboolean GLAPIENTRY
105_mesa_IsSampler(GLuint sampler);
106void GLAPIENTRY
107_mesa_BindSampler(GLuint unit, GLuint sampler);
108void GLAPIENTRY
109_mesa_BindSamplers(GLuint first, GLsizei count, const GLuint *samplers);
110void GLAPIENTRY
111_mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param);
112void GLAPIENTRY
113_mesa_SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param);
114void GLAPIENTRY
115_mesa_SamplerParameteriv(GLuint sampler, GLenum pname, const GLint *params);
116void GLAPIENTRY
117_mesa_SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat *params);
118void GLAPIENTRY
119_mesa_SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint *params);
120void GLAPIENTRY
121_mesa_SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint *params);
122void GLAPIENTRY
123_mesa_GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint *params);
124void GLAPIENTRY
125_mesa_GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat *params);
126void GLAPIENTRY
127_mesa_GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint *params);
128void GLAPIENTRY
129_mesa_GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint *params);
130
131#ifdef __cplusplus
132}
133#endif
134
135#endif /* SAMPLEROBJ_H */
136