src/gallium/drivers/softpipe/sp_clear.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * 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
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /* Author:
  29  *    Brian Paul
  30  */
  31
  32
  33 #include "pipe/p_defines.h"
  34 #include "sp_clear.h"
  35 #include "sp_context.h"
  36 #include "sp_surface.h"
  37 #include "sp_state.h"
  38 #include "sp_tile_cache.h"
  39
  40
  41 /**
  42  * Clear the given surface to the specified value.
  43  * No masking, no scissor (clear entire buffer).
  44  */
  45 void
  46 softpipe_clear(struct pipe_context *pipe, struct pipe_surface *ps,
  47                unsigned clearValue)
  48 {
  49    struct softpipe_context *softpipe = softpipe_context(pipe);
  50    uint i;
  51
  52    if (softpipe->no_rast)
  53       return;
  54
  55 #if 0
  56    softpipe_update_derived(softpipe); /* not needed?? */
  57 #endif
  58
  59    if (ps == sp_tile_cache_get_surface(softpipe->zsbuf_cache)) {
  60       sp_tile_cache_clear(softpipe->zsbuf_cache, clearValue);
  61       softpipe->framebuffer.zsbuf->status = PIPE_SURFACE_STATUS_CLEAR;
  62 #if TILE_CLEAR_OPTIMIZATION
  63       return;
  64 #endif
  65    }
  66
  67    for (i = 0; i < softpipe->framebuffer.num_cbufs; i++) {
  68       if (ps == sp_tile_cache_get_surface(softpipe->cbuf_cache[i])) {
  69          sp_tile_cache_clear(softpipe->cbuf_cache[i], clearValue);
  70          softpipe->framebuffer.cbufs[i]->status = PIPE_SURFACE_STATUS_CLEAR;
  71       }
  72    }
  73
  74 #if !TILE_CLEAR_OPTIMIZATION
  75    /* non-cached surface */
  76    pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, clearValue);
  77 #endif
  78 }