src/mesa/main/samplerobj.h

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