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
29 struct dd_function_table;
30
31 static inline struct gl_sampler_object *
_mesa_get_samplerobj(struct gl_context * ctx,GLuint unit)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? */
44 static inline GLboolean
_mesa_is_mipmap_filter(const struct gl_sampler_object * samp)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
51 extern void
52 _mesa_reference_sampler_object_(struct gl_context *ctx,
53 struct gl_sampler_object **ptr,
54 struct gl_sampler_object *samp);
55
56 static inline void
_mesa_reference_sampler_object(struct gl_context * ctx,struct gl_sampler_object ** ptr,struct gl_sampler_object * samp)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
66 extern void
67 _mesa_init_sampler_object(struct gl_sampler_object *sampObj, GLuint name);
68
69 extern struct gl_sampler_object *
70 _mesa_new_sampler_object(struct gl_context *ctx, GLuint name);
71
72 extern void
73 _mesa_delete_sampler_object(struct gl_context *ctx,
74 struct gl_sampler_object *sampObj);
75
76 extern void
77 _mesa_init_sampler_object_functions(struct dd_function_table *driver);
78
79 extern void
80 _mesa_init_sampler_object_dispatch(struct _glapi_table *disp);
81
82 extern void GLAPIENTRY
83 _mesa_BindSampler(GLuint unit, GLuint sampler);
84
85 extern void GLAPIENTRY
86 _mesa_GenSamplers(GLsizei count, GLuint *samplers);
87
88 extern void GLAPIENTRY
89 _mesa_DeleteSamplers(GLsizei count, const GLuint *samplers);
90
91 extern void GLAPIENTRY
92 _mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param);
93
94 #endif /* SAMPLEROBJ_H */
95