src/gallium/drivers/llvmpipe/lp_memory.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 VMware, Inc.  All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial portions
  15  * 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
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  20  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  21  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  **************************************************************************/
  26
  27
  28 #include "util/u_debug.h"
  29 #include "lp_limits.h"
  30 #include "lp_memory.h"
  31
  32
  33 /** 32bpp RGBA dummy tile to use in out of memory conditions */
  34 static PIPE_ALIGN_VAR(16) uint8_t lp_dummy_tile[TILE_SIZE * TILE_SIZE * 4];
  35
  36 static unsigned lp_out_of_memory = 0;
  37
  38
  39 uint8_t *
  40 lp_get_dummy_tile(void)
  41 {
  42    if (lp_out_of_memory++ < 10) {
  43       debug_printf("llvmpipe: out of memory.  Using dummy tile memory.\n");
  44    }
  45    return lp_dummy_tile;
  46 }
  47
  48 uint8_t *
  49 lp_get_dummy_tile_silent(void)
  50 {
  51    return lp_dummy_tile;
  52 }
  53
  54
  55 boolean
  56 lp_is_dummy_tile(void *tile)
  57 {
  58    return tile == lp_dummy_tile;
  59 }
  60