1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2008 Brian Paul 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 #ifndef READPIXELS_H 27 #define READPIXELS_H 28 29 30 #include "glheader.h" 31 32 struct gl_context; 33 struct gl_pixelstore_attrib; 34 35 36 extern GLboolean 37 _mesa_readpixels_needs_slow_path(const struct gl_context *ctx, GLenum format, 38 GLenum type, GLboolean uses_blit); 39 40 extern GLboolean 41 _mesa_need_rgb_to_luminance_conversion(GLenum srcBaseFormat, 42 GLenum dstBaseFormat); 43 44 extern GLboolean 45 _mesa_need_luminance_to_rgb_conversion(GLenum srcBaseFormat, 46 GLenum dstBaseFormat); 47 48 extern GLbitfield 49 _mesa_get_readpixels_transfer_ops(const struct gl_context *ctx, 50 mesa_format texFormat, 51 GLenum format, GLenum type, 52 GLboolean uses_blit); 53 54 extern void 55 _mesa_readpixels(struct gl_context *ctx, 56 GLint x, GLint y, GLsizei width, GLsizei height, 57 GLenum format, GLenum type, 58 const struct gl_pixelstore_attrib *packing, 59 GLvoid *pixels); 60 61 extern void GLAPIENTRY 62 _mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height, 63 GLenum format, GLenum type, GLvoid *pixels ); 64 65 extern void GLAPIENTRY 66 _mesa_ReadnPixelsARB( GLint x, GLint y, GLsizei width, GLsizei height, 67 GLenum format, GLenum type, GLsizei bufSize, 68 GLvoid *pixels ); 69 70 #endif 71
