src/mesa/state_tracker/st_format.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
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   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
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  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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  26  **************************************************************************/
  27
  28
  29 #ifndef ST_FORMAT_H
  30 #define ST_FORMAT_H
  31
  32
  33 struct pipe_format_info
  34 {
  35    enum pipe_format format;
  36    GLenum base_format;
  37    GLenum datatype;
  38    GLubyte red_bits;
  39    GLubyte green_bits;
  40    GLubyte blue_bits;
  41    GLubyte alpha_bits;
  42    GLubyte luminance_bits;
  43    GLubyte intensity_bits;
  44    GLubyte depth_bits;
  45    GLubyte stencil_bits;
  46    GLubyte size;           /**< in bytes */
  47 };
  48
  49
  50 GLboolean
  51 st_get_format_info(enum pipe_format format, struct pipe_format_info *pinfo);
  52
  53
  54 extern GLuint
  55 st_sizeof_format(enum pipe_format format);
  56
  57
  58 extern GLenum
  59 st_format_datatype(enum pipe_format format);
  60
  61
  62 extern enum pipe_format
  63 st_mesa_format_to_pipe_format(GLuint mesaFormat);
  64
  65
  66 extern enum pipe_format
  67 st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
  68                  enum pipe_texture_target target, unsigned tex_usage);
  69
  70 extern enum pipe_format
  71 st_choose_renderbuffer_format(struct pipe_screen *screen,
  72                               GLenum internalFormat);
  73
  74
  75 extern const struct gl_texture_format *
  76 st_ChooseTextureFormat(GLcontext * ctx, GLint internalFormat,
  77                        GLenum format, GLenum type);
  78
  79
  80 extern GLboolean
  81 st_equal_formats(enum pipe_format pFormat, GLenum format, GLenum type);
  82
  83
  84 #endif /* ST_CB_TEXIMAGE_H */