src/mesa/main/readpix.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26
  27 #ifndef READPIXELS_H
  28 #define READPIXELS_H
  29
  30
  31 #include "glheader.h"
  32
  33 struct gl_context;
  34 struct gl_pixelstore_attrib;
  35
  36
  37 extern GLboolean
  38 _mesa_readpixels_needs_slow_path(const struct gl_context *ctx, GLenum format,
  39                                  GLenum type, GLboolean uses_blit);
  40
  41 extern void
  42 _mesa_readpixels(struct gl_context *ctx,
  43                  GLint x, GLint y, GLsizei width, GLsizei height,
  44                  GLenum format, GLenum type,
  45                  const struct gl_pixelstore_attrib *packing,
  46                  GLvoid *pixels);
  47
  48 extern void GLAPIENTRY
  49 _mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,
  50                   GLenum format, GLenum type, GLvoid *pixels );
  51
  52 extern void GLAPIENTRY
  53 _mesa_ReadnPixelsARB( GLint x, GLint y, GLsizei width, GLsizei height,
  54                       GLenum format, GLenum type, GLsizei bufSize,
  55                       GLvoid *pixels );
  56
  57 #endif