src/mesa/drivers/dri/nouveau/nouveau_scratch.h

   1 /*
   2  * Copyright (C) 2009-2010 Francisco Jerez.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a 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, sublicense, 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
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #ifndef __NOUVEAU_SCRATCH_H__
  28 #define __NOUVEAU_SCRATCH_H__
  29
  30 #define NOUVEAU_SCRATCH_COUNT 2
  31 #define NOUVEAU_SCRATCH_SIZE 3*1024*1024
  32
  33 struct nouveau_scratch_state {
  34         struct nouveau_bo *bo[NOUVEAU_SCRATCH_COUNT];
  35
  36         int index;
  37         int offset;
  38         void *buf;
  39 };
  40
  41 void *
  42 nouveau_get_scratch(struct gl_context *ctx, unsigned size,
  43                     struct nouveau_bo **bo, unsigned *offset);
  44
  45 void
  46 nouveau_scratch_init(struct gl_context *ctx);
  47
  48 void
  49 nouveau_scratch_destroy(struct gl_context *ctx);
  50
  51 #endif