src/gallium/drivers/llvmpipe/lp_flush.c

   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                         int layer,
 102                         boolean read_only,
 103                         boolean cpu_access,
 104                         boolean do_not_block,
 105                         const char *reason)
 106 {
 107    unsigned referenced;
 108
 109    referenced = llvmpipe_is_resource_referenced(pipe, resource, level, layer);
 110
 111    if ((referenced & LP_REFERENCED_FOR_WRITE) ||
 112        ((referenced & LP_REFERENCED_FOR_READ) && !read_only)) {
 113
 114       if (cpu_access) {
 115          /*
 116           * Flush and wait.
 117           */
 118          if (do_not_block)
 119             return FALSE;
 120
 121          llvmpipe_finish(pipe, reason);
 122       } else {
 123          /*
 124           * Just flush.
 125           */
 126
 127          llvmpipe_flush(pipe, NULL, reason);
 128       }
 129    }
 130
 131    return TRUE;
 132 }