1c943dab9a36ac1b48a3da570d44128caa67c9f51Brian/************************************************************************** 2c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * 3c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. 4c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * All Rights Reserved. 5c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * 6c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * Permission is hereby granted, free of charge, to any person obtaining a 7c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * copy of this software and associated documentation files (the 8c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * "Software"), to deal in the Software without restriction, including 9c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * without limitation the rights to use, copy, modify, merge, publish, 10c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * distribute, sub license, and/or sell copies of the Software, and to 11c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * permit persons to whom the Software is furnished to do so, subject to 12c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * the following conditions: 13c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * 14c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * The above copyright notice and this permission notice (including the 15c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * next paragraph) shall be included in all copies or substantial portions 16c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * of the Software. 17c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * 18c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 19c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 21c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 22c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25c943dab9a36ac1b48a3da570d44128caa67c9f51Brian * 26c943dab9a36ac1b48a3da570d44128caa67c9f51Brian **************************************************************************/ 27c943dab9a36ac1b48a3da570d44128caa67c9f51Brian 28c943dab9a36ac1b48a3da570d44128caa67c9f51Brian 29c943dab9a36ac1b48a3da570d44128caa67c9f51Brian#include "main/imports.h" 3094780b5ee6dc118e22c29b5543c4db8e0ab1f393Brian Paul#include "main/readpix.h" 319b75627fab5bf2ea90f27ddd31b60c54895f6de6Thomas Hellstrom 328c210c1b3b5e63eebae2b73814d2000520576ce7Chia-I Wu#include "st_atom.h" 3394780b5ee6dc118e22c29b5543c4db8e0ab1f393Brian Paul#include "st_context.h" 34ddf09d20df8b9b4706e3abf901cb8879b02951dbBrian Paul#include "st_cb_bitmap.h" 35c943dab9a36ac1b48a3da570d44128caa67c9f51Brian#include "st_cb_readpixels.h" 3684a496746e1b01f4b11c4a44dd698b904ec83572Brian Paul 3784a496746e1b01f4b11c4a44dd698b904ec83572Brian Paul 3884a496746e1b01f4b11c4a44dd698b904ec83572Brian Paul/** 3994780b5ee6dc118e22c29b5543c4db8e0ab1f393Brian Paul * The only special thing we need to do for the state tracker's 4094780b5ee6dc118e22c29b5543c4db8e0ab1f393Brian Paul * glReadPixels is to validate state (to be sure we have up-to-date 4194780b5ee6dc118e22c29b5543c4db8e0ab1f393Brian Paul * framebuffer surfaces) and flush the bitmap cache prior to reading. 4204ee3cecdf8ef39695bdc66120a4e3bbb9f40acaBrian */ 43c943dab9a36ac1b48a3da570d44128caa67c9f51Brianstatic void 4494780b5ee6dc118e22c29b5543c4db8e0ab1f393Brian Paulst_readpixels(struct gl_context *ctx, GLint x, GLint y, 4594780b5ee6dc118e22c29b5543c4db8e0ab1f393Brian Paul GLsizei width, GLsizei height, 46c943dab9a36ac1b48a3da570d44128caa67c9f51Brian GLenum format, GLenum type, 4704ee3cecdf8ef39695bdc66120a4e3bbb9f40acaBrian const struct gl_pixelstore_attrib *pack, 48c943dab9a36ac1b48a3da570d44128caa67c9f51Brian GLvoid *dest) 49c943dab9a36ac1b48a3da570d44128caa67c9f51Brian{ 5076c7ad2e7d387feefe58dc2116b613fe11a8b273Brian Paul struct st_context *st = st_context(ctx); 511a82d9648b3db780e58e4966924157542d148c58Brian Paul 5276c7ad2e7d387feefe58dc2116b613fe11a8b273Brian Paul st_validate_state(st); 53ddf09d20df8b9b4706e3abf901cb8879b02951dbBrian Paul st_flush_bitmap_cache(st); 5494780b5ee6dc118e22c29b5543c4db8e0ab1f393Brian Paul _mesa_readpixels(ctx, x, y, width, height, format, type, pack, dest); 55c943dab9a36ac1b48a3da570d44128caa67c9f51Brian} 56c943dab9a36ac1b48a3da570d44128caa67c9f51Brian 5704ee3cecdf8ef39695bdc66120a4e3bbb9f40acaBrian 58c943dab9a36ac1b48a3da570d44128caa67c9f51Brianvoid st_init_readpixels_functions(struct dd_function_table *functions) 59c943dab9a36ac1b48a3da570d44128caa67c9f51Brian{ 60c943dab9a36ac1b48a3da570d44128caa67c9f51Brian functions->ReadPixels = st_readpixels; 61c943dab9a36ac1b48a3da570d44128caa67c9f51Brian} 62