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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 TUNGSTEN GRAPHICS 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 Dnzer
     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    if (buffers & PIPE_CLEAR_COLOR) {
     46       unsigned i;
     47       for (i = 0; i < framebuffer->nr_cbufs; i++) {
     48          struct pipe_surface *ps = framebuffer->cbufs[i];
     49          pipe->clear_render_target(pipe, ps, color, 0, 0, ps->width, ps->height);
     50       }
     51    }
     52 
     53    if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {
     54       struct pipe_surface *ps = framebuffer->zsbuf;
     55       pipe->clear_depth_stencil(pipe, ps, buffers & PIPE_CLEAR_DEPTHSTENCIL,
     56                                 depth, stencil,
     57                                 0, 0, ps->width, ps->height);
     58    }
     59 }
     60