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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
33 extern "C" {
34 #endif
35 
36 struct dd_function_table;
37 
38 static inline struct gl_sampler_object *
_mesa_get_samplerobj(struct gl_context * ctx,GLuint unit)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? */
51 static inline GLboolean
_mesa_is_mipmap_filter(const struct gl_sampler_object * samp)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 
58 extern void
59 _mesa_reference_sampler_object_(struct gl_context *ctx,
60                                 struct gl_sampler_object **ptr,
61                                 struct gl_sampler_object *samp);
62 
63 static inline void
_mesa_reference_sampler_object(struct gl_context * ctx,struct gl_sampler_object ** ptr,struct gl_sampler_object * samp)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 
72 extern struct gl_sampler_object *
73 _mesa_lookup_samplerobj(struct gl_context *ctx, GLuint name);
74 
75 extern struct gl_sampler_object *
76 _mesa_new_sampler_object(struct gl_context *ctx, GLuint name);
77 
78 extern void
79 _mesa_init_sampler_object_functions(struct dd_function_table *driver);
80 
81 extern void
82 _mesa_set_sampler_wrap(struct gl_context *ctx, struct gl_sampler_object *samp,
83                        GLenum s, GLenum t, GLenum r);
84 
85 extern void
86 _mesa_set_sampler_filters(struct gl_context *ctx,
87                           struct gl_sampler_object *samp,
88                           GLenum min_filter, GLenum mag_filter);
89 
90 extern void
91 _mesa_set_sampler_srgb_decode(struct gl_context *ctx,
92                               struct gl_sampler_object *samp, GLenum param);
93 
94 extern void
95 _mesa_bind_sampler(struct gl_context *ctx, GLuint unit,
96                    struct gl_sampler_object *sampObj);
97 
98 void GLAPIENTRY
99 _mesa_GenSamplers_no_error(GLsizei count, GLuint *samplers);
100 
101 void GLAPIENTRY
102 _mesa_GenSamplers(GLsizei count, GLuint *samplers);
103 
104 void GLAPIENTRY
105 _mesa_CreateSamplers_no_error(GLsizei count, GLuint *samplers);
106 
107 void GLAPIENTRY
108 _mesa_CreateSamplers(GLsizei count, GLuint *samplers);
109 
110 void GLAPIENTRY
111 _mesa_DeleteSamplers_no_error(GLsizei count, const GLuint *samplers);
112 
113 void GLAPIENTRY
114 _mesa_DeleteSamplers(GLsizei count, const GLuint *samplers);
115 
116 GLboolean GLAPIENTRY
117 _mesa_IsSampler(GLuint sampler);
118 
119 void GLAPIENTRY
120 _mesa_BindSampler_no_error(GLuint unit, GLuint sampler);
121 
122 void GLAPIENTRY
123 _mesa_BindSampler(GLuint unit, GLuint sampler);
124 
125 void GLAPIENTRY
126 _mesa_BindSamplers_no_error(GLuint first, GLsizei count, const GLuint *samplers);
127 
128 void GLAPIENTRY
129 _mesa_BindSamplers(GLuint first, GLsizei count, const GLuint *samplers);
130 
131 void GLAPIENTRY
132 _mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param);
133 void GLAPIENTRY
134 _mesa_SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param);
135 void GLAPIENTRY
136 _mesa_SamplerParameteriv(GLuint sampler, GLenum pname, const GLint *params);
137 void GLAPIENTRY
138 _mesa_SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat *params);
139 void GLAPIENTRY
140 _mesa_SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint *params);
141 void GLAPIENTRY
142 _mesa_SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint *params);
143 void GLAPIENTRY
144 _mesa_GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint *params);
145 void GLAPIENTRY
146 _mesa_GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat *params);
147 void GLAPIENTRY
148 _mesa_GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint *params);
149 void GLAPIENTRY
150 _mesa_GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint *params);
151 
152 #ifdef __cplusplus
153 }
154 #endif
155 
156 #endif /* SAMPLEROBJ_H */
157