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 flags  bitmask of PIPE_FLUSH_x flags
  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                 unsigned flags,
  49                 struct pipe_fence_handle **fence,
  50                 const char *reason)
  51 {
  52    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
  53
  54    draw_flush(llvmpipe->draw);
  55
  56    /* ask the setup module to flush */
  57    lp_setup_flush(llvmpipe->setup, flags, fence, reason);
  58
  59
  60    if (llvmpipe_variant_count > 1000) {
  61       /* time to do a garbage collection */
  62       gallivm_garbage_collect(llvmpipe->gallivm);
  63       llvmpipe_variant_count = 0;
  64    }
  65
  66    /* Enable to dump BMPs of the color/depth buffers each frame */
  67    if (0) {
  68       if (flags & PIPE_FLUSH_FRAME) {
  69          static unsigned frame_no = 1;
  70          char filename[256];
  71          unsigned i;
  72
  73          for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
  74             util_snprintf(filename, sizeof(filename), "cbuf%u_%u", i, frame_no);
  75             debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.cbufs[0]);
  76          }
  77
  78          if (0) {
  79             util_snprintf(filename, sizeof(filename), "zsbuf_%u", frame_no);
  80             debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.zsbuf);
  81          }
  82
  83          ++frame_no;
  84       }
  85    }
  86 }
  87
  88 void
  89 llvmpipe_finish( struct pipe_context *pipe,
  90                  const char *reason )
  91 {
  92    struct pipe_fence_handle *fence = NULL;
  93    llvmpipe_flush(pipe, 0, &fence, reason);
  94    if (fence) {
  95       pipe->screen->fence_finish(pipe->screen, fence, 0);
  96       pipe->screen->fence_reference(pipe->screen, &fence, NULL);
  97    }
  98 }
  99
 100 /**
 101  * Flush context if necessary.
 102  *
 103  * Returns FALSE if it would have block, but do_not_block was set, TRUE
 104  * otherwise.
 105  *
 106  * TODO: move this logic to an auxiliary library?
 107  */
 108 boolean
 109 llvmpipe_flush_resource(struct pipe_context *pipe,
 110                         struct pipe_resource *resource,
 111                         unsigned level,
 112                         int layer,
 113                         unsigned flush_flags,
 114                         boolean read_only,
 115                         boolean cpu_access,
 116                         boolean do_not_block,
 117                         const char *reason)
 118 {
 119    unsigned referenced;
 120
 121    referenced = pipe->is_resource_referenced(pipe, resource, level, layer);
 122
 123    if ((referenced & PIPE_REFERENCED_FOR_WRITE) ||
 124        ((referenced & PIPE_REFERENCED_FOR_READ) && !read_only)) {
 125
 126       if (cpu_access) {
 127          /*
 128           * Flush and wait.
 129           */
 130          if (do_not_block)
 131             return FALSE;
 132
 133          llvmpipe_finish(pipe, reason);
 134       } else {
 135          /*
 136           * Just flush.
 137           */
 138
 139          llvmpipe_flush(pipe, flush_flags, NULL, reason);
 140       }
 141    }
 142
 143    return TRUE;
 144 }