src/gallium/drivers/llvmpipe/lp_flush.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 VMware, Inc.
   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 VMWARE 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 <keithw@vmware.com>
  30  */
  31
  32
  33 #include "pipe/p_defines.h"
  34 #include "pipe/p_screen.h"
  35 #include "util/u_debug_image.h"
  36 #include "util/u_string.h"
  37 #include "draw/draw_context.h"
  38 #include "lp_flush.h"
  39 #include "lp_context.h"
  40 #include "lp_setup.h"
  41
  42
  43 /**
  44  * \param fence  if non-null, returns pointer to a fence which can be waited on
  45  */
  46 void
  47 llvmpipe_flush( struct pipe_context *pipe,
  48                 struct pipe_fence_handle **fence,
  49                 const char *reason)
  50 {
  51    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  52
  53    draw_flush(llvmpipe->draw);
  54
  55    /* ask the setup module to flush */
  56    lp_setup_flush(llvmpipe->setup, fence, reason);
  57
  58    /* Enable to dump BMPs of the color/depth buffers each frame */
  59    if (0) {
  60       static unsigned frame_no = 1;
  61       char filename[256];
  62       unsigned i;
  63
  64       for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
  65          snprintf(filename, sizeof(filename), "cbuf%u_%u", i, frame_no);
  66          debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.cbufs[i]);
  67       }
  68
  69       if (0) {
  70          snprintf(filename, sizeof(filename), "zsbuf_%u", frame_no);
  71          debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.zsbuf);
  72       }
  73
  74       ++frame_no;
  75    }
  76 }
  77
  78 void
  79 llvmpipe_finish( struct pipe_context *pipe,
  80                  const char *reason )
  81 {
  82    struct pipe_fence_handle *fence = NULL;
  83    llvmpipe_flush(pipe, &fence, reason);
  84    if (fence) {
  85       pipe->screen->fence_finish(pipe->screen, NULL, fence,
  86                                  PIPE_TIMEOUT_INFINITE);
  87       pipe->screen->fence_reference(pipe->screen, &fence, NULL);
  88    }
  89 }
  90
  91 /**
  92  * Flush context if necessary.
  93  *
  94  * Returns FALSE if it would have block, but do_not_block was set, TRUE
  95  * otherwise.
  96  *
  97  * TODO: move this logic to an auxiliary library?
  98  */
  99 boolean
 100 llvmpipe_flush_resource(struct pipe_context *pipe,
 101                         struct pipe_resource *resource,
 102                         unsigned level,
 103                         boolean read_only,
 104                         boolean cpu_access,
 105                         boolean do_not_block,
 106                         const char *reason)
 107 {
 108    unsigned referenced;
 109
 110    referenced = llvmpipe_is_resource_referenced(pipe, resource, level);
 111
 112    if ((referenced & LP_REFERENCED_FOR_WRITE) ||
 113        ((referenced & LP_REFERENCED_FOR_READ) && !read_only)) {
 114
 115       if (cpu_access) {
 116          /*
 117           * Flush and wait.
 118           */
 119          if (do_not_block)
 120             return FALSE;
 121
 122          llvmpipe_finish(pipe, reason);
 123       } else {
 124          /*
 125           * Just flush.
 126           */
 127
 128          llvmpipe_flush(pipe, NULL, reason);
 129       }
 130    }
 131
 132    return TRUE;
 133 }