Subversion Repositories Kolibri OS

/**************************************************************************

 *

 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.

 * All Rights Reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the

 * "Software"), to deal in the Software without restriction, including

 * without limitation the rights to use, copy, modify, merge, publish,

 * distribute, sub license, and/or sell copies of the Software, and to

 * permit persons to whom the Software is furnished to do so, subject to

 * the following conditions:

 *

 * The above copyright notice and this permission notice (including the

 * next paragraph) shall be included in all copies or substantial portions

 * of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.

 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR

 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 *

 **************************************************************************/

/* Author:

 *    Keith Whitwell 

 */

#include "pipe/p_defines.h"

#include "pipe/p_screen.h"

#include "draw/draw_context.h"

#include "sp_flush.h"

#include "sp_context.h"

#include "sp_state.h"

#include "sp_tile_cache.h"

#include "sp_tex_tile_cache.h"

#include "util/u_memory.h"

#include "util/u_string.h"

void

softpipe_flush( struct pipe_context *pipe,

                unsigned flags,

                struct pipe_fence_handle **fence )

{

   struct softpipe_context *softpipe = softpipe_context(pipe);

   uint i;

   draw_flush(softpipe->draw);

   if (flags & SP_FLUSH_TEXTURE_CACHE) {

      unsigned sh;

      for (sh = 0; sh < Elements(softpipe->tex_cache); sh++) {

         for (i = 0; i < softpipe->num_sampler_views[sh]; i++) {

            sp_flush_tex_tile_cache(softpipe->tex_cache[sh][i]);

         }

      }

   }

   /* If this is a swapbuffers, just flush color buffers.

    *

    * The zbuffer changes are not discarded, but held in the cache

    * in the hope that a later clear will wipe them out.

    */

   for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++)

      if (softpipe->cbuf_cache[i])

         sp_flush_tile_cache(softpipe->cbuf_cache[i]);

   if (softpipe->zsbuf_cache)

      sp_flush_tile_cache(softpipe->zsbuf_cache);

   softpipe->dirty_render_cache = FALSE;

   /* Enable to dump BMPs of the color/depth buffers each frame */

#if 0

   if (flags & PIPE_FLUSH_END_OF_FRAME) {

      static unsigned frame_no = 1;

      static char filename[256];

      util_snprintf(filename, sizeof(filename), "cbuf_%u.bmp", frame_no);

      debug_dump_surface_bmp(pipe, filename, softpipe->framebuffer.cbufs[0]);

      util_snprintf(filename, sizeof(filename), "zsbuf_%u.bmp", frame_no);

      debug_dump_surface_bmp(pipe, filename, softpipe->framebuffer.zsbuf);

      ++frame_no;

   }

#endif

   if (fence)

      *fence = (void*)(intptr_t)1;

}

void

softpipe_flush_wrapped(struct pipe_context *pipe,

                       struct pipe_fence_handle **fence,

                       unsigned flags)

{

   softpipe_flush(pipe, SP_FLUSH_TEXTURE_CACHE, fence);

}

/**

 * Flush context if necessary.

 *

 * Returns FALSE if it would have block, but do_not_block was set, TRUE

 * otherwise.

 *

 * TODO: move this logic to an auxiliary library?

 */

boolean

softpipe_flush_resource(struct pipe_context *pipe,

                        struct pipe_resource *texture,

                        unsigned level,

                        int layer,

                        unsigned flush_flags,

                        boolean read_only,

                        boolean cpu_access,

                        boolean do_not_block)

{

   unsigned referenced;

   referenced = softpipe_is_resource_referenced(pipe, texture, level, layer);

   if ((referenced & SP_REFERENCED_FOR_WRITE) ||

       ((referenced & SP_REFERENCED_FOR_READ) && !read_only)) {

      /*

       * TODO: The semantics of these flush flags are too obtuse. They should

       * disappear and the pipe driver should just ensure that all visible

       * side-effects happen when they need to happen.

       */

      if (referenced & SP_REFERENCED_FOR_READ)

         flush_flags |= SP_FLUSH_TEXTURE_CACHE;

      if (cpu_access) {

         /*

          * Flush and wait.

          */

         struct pipe_fence_handle *fence = NULL;

         if (do_not_block)

            return FALSE;

         softpipe_flush(pipe, flush_flags, &fence);

         if (fence) {

            /*

             * This is for illustrative purposes only, as softpipe does not

             * have fences.

             */

            pipe->screen->fence_finish(pipe->screen, fence,

                                       PIPE_TIMEOUT_INFINITE);

            pipe->screen->fence_reference(pipe->screen, &fence, NULL);

         }

      } else {

         /*

          * Just flush.

          */

         softpipe_flush(pipe, flush_flags, NULL);

      }

   }

   return TRUE;

}