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
  58    if (llvmpipe_variant_count > 1000) {
  59       /* time to do a garbage collection */
  60       gallivm_garbage_collect(llvmpipe->gallivm);
  61       llvmpipe_variant_count = 0;
  62    }
  63
  64    /* Enable to dump BMPs of the color/depth buffers each frame */
  65    if (0) {
  66       static unsigned frame_no = 1;
  67       char filename[256];
  68       unsigned i;
  69
  70       for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
  71          util_snprintf(filename, sizeof(filename), "cbuf%u_%u", i, frame_no);
  72          debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.cbufs[i]);
  73       }
  74
  75       if (0) {
  76          util_snprintf(filename, sizeof(filename), "zsbuf_%u", frame_no);
  77          debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.zsbuf);
  78       }
  79
  80       ++frame_no;
  81    }
  82 }
  83
  84 void
  85 llvmpipe_finish( struct pipe_context *pipe,
  86                  const char *reason )
  87 {
  88    struct pipe_fence_handle *fence = NULL;
  89    llvmpipe_flush(pipe, &fence, reason);
  90    if (fence) {
  91       pipe->screen->fence_finish(pipe->screen, fence, PIPE_TIMEOUT_INFINITE);
  92       pipe->screen->fence_reference(pipe->screen, &fence, NULL);
  93    }
  94 }
  95
  96 /**
  97  * Flush context if necessary.
  98  *
  99  * Returns FALSE if it would have block, but do_not_block was set, TRUE
 100  * otherwise.
 101  *
 102  * TODO: move this logic to an auxiliary library?
 103  */
 104 boolean
 105 llvmpipe_flush_resource(struct pipe_context *pipe,
 106                         struct pipe_resource *resource,
 107                         unsigned level,
 108                         int layer,
 109                         boolean read_only,
 110                         boolean cpu_access,
 111                         boolean do_not_block,
 112                         const char *reason)
 113 {
 114    unsigned referenced;
 115
 116    referenced = llvmpipe_is_resource_referenced(pipe, resource, level, layer);
 117
 118    if ((referenced & LP_REFERENCED_FOR_WRITE) ||
 119        ((referenced & LP_REFERENCED_FOR_READ) && !read_only)) {
 120
 121       if (cpu_access) {
 122          /*
 123           * Flush and wait.
 124           */
 125          if (do_not_block)
 126             return FALSE;
 127
 128          llvmpipe_finish(pipe, reason);
 129       } else {
 130          /*
 131           * Just flush.
 132           */
 133
 134          llvmpipe_flush(pipe, NULL, reason);
 135       }
 136    }
 137
 138    return TRUE;
 139 }