src/gallium/winsys/drm/intel/dri/intel_winsys_softpipe.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA
   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 SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  18  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  19  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  *
  27  **************************************************************************/
  28 /*
  29  * Authors: Keith Whitwell <keithw-at-tungstengraphics-dot-com>
  30  */
  31
  32 #include "intel_context.h"
  33 #include "intel_winsys_softpipe.h"
  34 #include "pipe/p_defines.h"
  35 #include "pipe/p_format.h"
  36 #include "util/u_memory.h"
  37 #include "softpipe/sp_winsys.h"
  38
  39
  40 struct intel_softpipe_winsys {
  41    struct softpipe_winsys sws;
  42    struct intel_context *intel;
  43 };
  44
  45 /**
  46  * Return list of surface formats supported by this driver.
  47  */
  48 static boolean
  49 intel_is_format_supported(struct softpipe_winsys *sws,
  50                           enum pipe_format format)
  51 {
  52    switch(format) {
  53    case PIPE_FORMAT_A8R8G8B8_UNORM:
  54    case PIPE_FORMAT_R5G6B5_UNORM:
  55    case PIPE_FORMAT_S8Z24_UNORM:
  56       return TRUE;
  57    default:
  58       return FALSE;
  59    }
  60 }
  61
  62
  63 /**
  64  * Create rendering context which uses software rendering.
  65  */
  66 struct pipe_context *
  67 intel_create_softpipe( struct intel_context *intel,
  68                        struct pipe_winsys *winsys )
  69 {
  70    struct intel_softpipe_winsys *isws = CALLOC_STRUCT( intel_softpipe_winsys );
  71    struct pipe_screen *screen = softpipe_create_screen(winsys);
  72
  73    /* Fill in this struct with callbacks that softpipe will need to
  74     * communicate with the window system, buffer manager, etc.
  75     */
  76    isws->sws.is_format_supported = intel_is_format_supported;
  77    isws->intel = intel;
  78
  79    /* Create the softpipe context:
  80     */
  81    return softpipe_create( screen, winsys, &isws->sws );
  82 }