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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
  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 above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial portions
  16.  * of the Software.
  17.  *
  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21.  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  **************************************************************************/
  27.  
  28. /* Author:
  29.  *    Keith Whitwell <keith@tungstengraphics.com>
  30.  */
  31.  
  32.  
  33. #include "pipe/p_defines.h"
  34. #include "pipe/p_screen.h"
  35. #include "util/u_string.h"
  36. #include "draw/draw_context.h"
  37. #include "lp_flush.h"
  38. #include "lp_context.h"
  39. #include "lp_setup.h"
  40.  
  41.  
  42. /**
  43.  * \param fence  if non-null, returns pointer to a fence which can be waited on
  44.  */
  45. void
  46. llvmpipe_flush( struct pipe_context *pipe,
  47.                 struct pipe_fence_handle **fence,
  48.                 const char *reason)
  49. {
  50.    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  51.  
  52.    draw_flush(llvmpipe->draw);
  53.  
  54.    /* ask the setup module to flush */
  55.    lp_setup_flush(llvmpipe->setup, fence, reason);
  56.  
  57.    /* Enable to dump BMPs of the color/depth buffers each frame */
  58.    if (0) {
  59.       static unsigned frame_no = 1;
  60.       char filename[256];
  61.       unsigned i;
  62.  
  63.       for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
  64.          util_snprintf(filename, sizeof(filename), "cbuf%u_%u", i, frame_no);
  65.          debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.cbufs[i]);
  66.       }
  67.  
  68.       if (0) {
  69.          util_snprintf(filename, sizeof(filename), "zsbuf_%u", frame_no);
  70.          debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.zsbuf);
  71.       }
  72.  
  73.       ++frame_no;
  74.    }
  75. }
  76.  
  77. void
  78. llvmpipe_finish( struct pipe_context *pipe,
  79.                  const char *reason )
  80. {
  81.    struct pipe_fence_handle *fence = NULL;
  82.    llvmpipe_flush(pipe, &fence, reason);
  83.    if (fence) {
  84.       pipe->screen->fence_finish(pipe->screen, fence, PIPE_TIMEOUT_INFINITE);
  85.       pipe->screen->fence_reference(pipe->screen, &fence, NULL);
  86.    }
  87. }
  88.  
  89. /**
  90.  * Flush context if necessary.
  91.  *
  92.  * Returns FALSE if it would have block, but do_not_block was set, TRUE
  93.  * otherwise.
  94.  *
  95.  * TODO: move this logic to an auxiliary library?
  96.  */
  97. boolean
  98. llvmpipe_flush_resource(struct pipe_context *pipe,
  99.                         struct pipe_resource *resource,
  100.                         unsigned level,
  101.                         boolean read_only,
  102.                         boolean cpu_access,
  103.                         boolean do_not_block,
  104.                         const char *reason)
  105. {
  106.    unsigned referenced;
  107.  
  108.    referenced = llvmpipe_is_resource_referenced(pipe, resource, level);
  109.  
  110.    if ((referenced & LP_REFERENCED_FOR_WRITE) ||
  111.        ((referenced & LP_REFERENCED_FOR_READ) && !read_only)) {
  112.  
  113.       if (cpu_access) {
  114.          /*
  115.           * Flush and wait.
  116.           */
  117.          if (do_not_block)
  118.             return FALSE;
  119.  
  120.          llvmpipe_finish(pipe, reason);
  121.       } else {
  122.          /*
  123.           * Just flush.
  124.           */
  125.  
  126.          llvmpipe_flush(pipe, NULL, reason);
  127.       }
  128.    }
  129.  
  130.    return TRUE;
  131. }
  132.