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/**************************************************************************
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 *
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 * Copyright 2010 VMware, Inc.
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 * All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the
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 * "Software"), to deal in the Software without restriction, including
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 * without limitation the rights to use, copy, modify, merge, publish,
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 * distribute, sub license, and/or sell copies of the Software, and to
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 * permit persons to whom the Software is furnished to do so, subject to
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 * the following conditions:
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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 * USE OR OTHER DEALINGS IN THE SOFTWARE.
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial portions
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 * of the Software.
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 *
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 **************************************************************************/
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/**
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 * @file
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 * Null software rasterizer winsys.
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 *
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 * There is no present support. Framebuffer data needs to be obtained via
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 * transfers.
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 *
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 * @author Jose Fonseca
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 */
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#include
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#include "pipe/p_format.h"
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#include "util/u_memory.h"
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#include "state_tracker/sw_winsys.h"
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#include "null_sw_winsys.h"
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static boolean
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null_sw_is_displaytarget_format_supported(struct sw_winsys *ws,
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                                          unsigned tex_usage,
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                                          enum pipe_format format )
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{
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   return FALSE;
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}
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static void *
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null_sw_displaytarget_map(struct sw_winsys *ws,
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                          struct sw_displaytarget *dt,
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                          unsigned flags )
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{
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   assert(0);
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   return NULL;
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}
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static void
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null_sw_displaytarget_unmap(struct sw_winsys *ws,
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                            struct sw_displaytarget *dt )
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{
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   assert(0);
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}
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static void
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null_sw_displaytarget_destroy(struct sw_winsys *winsys,
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                              struct sw_displaytarget *dt)
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{
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   assert(0);
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}
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static struct sw_displaytarget *
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null_sw_displaytarget_create(struct sw_winsys *winsys,
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                             unsigned tex_usage,
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                             enum pipe_format format,
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                             unsigned width, unsigned height,
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                             unsigned alignment,
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                             unsigned *stride)
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{
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   fprintf(stderr, "null_sw_displaytarget_create() returning NULL\n");
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   return NULL;
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}
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static struct sw_displaytarget *
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null_sw_displaytarget_from_handle(struct sw_winsys *winsys,
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                                  const struct pipe_resource *templat,
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                                  struct winsys_handle *whandle,
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                                  unsigned *stride)
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{
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   return NULL;
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}
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static boolean
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null_sw_displaytarget_get_handle(struct sw_winsys *winsys,
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                                 struct sw_displaytarget *dt,
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                                 struct winsys_handle *whandle)
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{
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   assert(0);
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   return FALSE;
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}
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static void
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null_sw_displaytarget_display(struct sw_winsys *winsys,
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                              struct sw_displaytarget *dt,
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                              void *context_private)
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{
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   assert(0);
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}
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static void
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null_sw_destroy(struct sw_winsys *winsys)
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{
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   FREE(winsys);
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}
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struct sw_winsys *
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null_sw_create(void)
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{
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   static struct sw_winsys *winsys;
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   winsys = CALLOC_STRUCT(sw_winsys);
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   if (!winsys)
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      return NULL;
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   winsys->destroy = null_sw_destroy;
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   winsys->is_displaytarget_format_supported = null_sw_is_displaytarget_format_supported;
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   winsys->displaytarget_create = null_sw_displaytarget_create;
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   winsys->displaytarget_from_handle = null_sw_displaytarget_from_handle;
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   winsys->displaytarget_get_handle = null_sw_displaytarget_get_handle;
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   winsys->displaytarget_map = null_sw_displaytarget_map;
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   winsys->displaytarget_unmap = null_sw_displaytarget_unmap;
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   winsys->displaytarget_display = null_sw_displaytarget_display;
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   winsys->displaytarget_destroy = null_sw_displaytarget_destroy;
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   return winsys;
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}