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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2009 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. /* Authors:
  28.  *    Michel Dänzer
  29.  */
  30.  
  31.  
  32. #include "pipe/p_context.h"
  33. #include "pipe/p_state.h"
  34.  
  35.  
  36. /**
  37.  * Clear the given buffers to the specified values.
  38.  * No masking, no scissor (clear entire buffer).
  39.  */
  40. static INLINE void
  41. util_clear(struct pipe_context *pipe,
  42.            struct pipe_framebuffer_state *framebuffer, unsigned buffers,
  43.            const union pipe_color_union *color, double depth, unsigned stencil)
  44. {
  45.    unsigned i;
  46.  
  47.    for (i = 0; i < framebuffer->nr_cbufs; i++) {
  48.       if (buffers & (PIPE_CLEAR_COLOR0 << i)) {
  49.          struct pipe_surface *ps = framebuffer->cbufs[i];
  50.  
  51.          if (ps) {
  52.             pipe->clear_render_target(pipe, ps, color, 0, 0, ps->width, ps->height);
  53.          }
  54.       }
  55.    }
  56.  
  57.    if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {
  58.       struct pipe_surface *ps = framebuffer->zsbuf;
  59.       pipe->clear_depth_stencil(pipe, ps, buffers & PIPE_CLEAR_DEPTHSTENCIL,
  60.                                 depth, stencil,
  61.                                 0, 0, ps->width, ps->height);
  62.    }
  63. }
  64.