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 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 *
  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
  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
  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 extern struct gl_sampler_object *
  66 _mesa_lookup_samplerobj(struct gl_context *ctx, GLuint name);
  67
  68 extern struct gl_sampler_object *
  69 _mesa_new_sampler_object(struct gl_context *ctx, GLuint name);
  70
  71 extern void
  72 _mesa_init_sampler_object_functions(struct dd_function_table *driver);
  73
  74 void GLAPIENTRY
  75 _mesa_GenSamplers(GLsizei count, GLuint *samplers);
  76 void GLAPIENTRY
  77 _mesa_DeleteSamplers(GLsizei count, const GLuint *samplers);
  78 GLboolean GLAPIENTRY
  79 _mesa_IsSampler(GLuint sampler);
  80 void GLAPIENTRY
  81 _mesa_BindSampler(GLuint unit, GLuint sampler);
  82 void GLAPIENTRY
  83 _mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param);
  84 void GLAPIENTRY
  85 _mesa_SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param);
  86 void GLAPIENTRY
  87 _mesa_SamplerParameteriv(GLuint sampler, GLenum pname, const GLint *params);
  88 void GLAPIENTRY
  89 _mesa_SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat *params);
  90 void GLAPIENTRY
  91 _mesa_SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint *params);
  92 void GLAPIENTRY
  93 _mesa_SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint *params);
  94 void GLAPIENTRY
  95 _mesa_GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint *params);
  96 void GLAPIENTRY
  97 _mesa_GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat *params);
  98 void GLAPIENTRY
  99 _mesa_GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint *params);
 100 void GLAPIENTRY
 101 _mesa_GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint *params);
 102
 103 #endif /* SAMPLEROBJ_H */