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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 (at) 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 }
    133