src/gallium/auxiliary/util/u_clear.h

   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 Dänzer
  29  */
  30
  31
  32 #include "pipe/p_context.h"
  33 #include "pipe/p_state.h"
  34 #include "util/u_pack_color.h"
  35 #include "util/u_rect.h"
  36
  37
  38 /**
  39  * Clear the given buffers to the specified values.
  40  * No masking, no scissor (clear entire buffer).
  41  */
  42 static INLINE void
  43 util_clear(struct pipe_context *pipe,
  44            struct pipe_framebuffer_state *framebuffer, unsigned buffers,
  45            const float *rgba, double depth, unsigned stencil)
  46 {
  47    if (buffers & PIPE_CLEAR_COLOR) {
  48       struct pipe_surface *ps = framebuffer->cbufs[0];
  49       union util_color uc;
  50
  51       util_pack_color(rgba, ps->format, &uc);
  52       if (pipe->surface_fill) {
  53          pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, uc.ui);
  54       } else {
  55          util_surface_fill(pipe, ps, 0, 0, ps->width, ps->height, uc.ui);
  56       }
  57    }
  58
  59    if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {
  60       struct pipe_surface *ps = framebuffer->zsbuf;
  61
  62       if (pipe->surface_fill) {
  63          pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height,
  64                             util_pack_z_stencil(ps->format, depth, stencil));
  65       } else {
  66          util_surface_fill(pipe, ps, 0, 0, ps->width, ps->height,
  67                            util_pack_z_stencil(ps->format, depth, stencil));
  68       }
  69    }
  70 }