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      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 (at) vmware.com>
     30  */
     31 
     32 
     33 #include "pipe/p_defines.h"
     34 #include "pipe/p_screen.h"
     35 #include "draw/draw_context.h"
     36 #include "sp_flush.h"
     37 #include "sp_context.h"
     38 #include "sp_state.h"
     39 #include "sp_tile_cache.h"
     40 #include "sp_tex_tile_cache.h"
     41 #include "util/u_debug_image.h"
     42 #include "util/u_memory.h"
     43 #include "util/u_string.h"
     44 
     45 
     46 void
     47 softpipe_flush( struct pipe_context *pipe,
     48                 unsigned flags,
     49                 struct pipe_fence_handle **fence )
     50 {
     51    struct softpipe_context *softpipe = softpipe_context(pipe);
     52    uint i;
     53 
     54    draw_flush(softpipe->draw);
     55 
     56    if (flags & SP_FLUSH_TEXTURE_CACHE) {
     57       unsigned sh;
     58 
     59       for (sh = 0; sh < ARRAY_SIZE(softpipe->tex_cache); sh++) {
     60          for (i = 0; i < softpipe->num_sampler_views[sh]; i++) {
     61             sp_flush_tex_tile_cache(softpipe->tex_cache[sh][i]);
     62          }
     63       }
     64    }
     65 
     66    /* If this is a swapbuffers, just flush color buffers.
     67     *
     68     * The zbuffer changes are not discarded, but held in the cache
     69     * in the hope that a later clear will wipe them out.
     70     */
     71    for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++)
     72       if (softpipe->cbuf_cache[i])
     73          sp_flush_tile_cache(softpipe->cbuf_cache[i]);
     74 
     75    if (softpipe->zsbuf_cache)
     76       sp_flush_tile_cache(softpipe->zsbuf_cache);
     77 
     78    softpipe->dirty_render_cache = FALSE;
     79 
     80    /* Enable to dump BMPs of the color/depth buffers each frame */
     81 #if 0
     82    if (flags & PIPE_FLUSH_END_OF_FRAME) {
     83       static unsigned frame_no = 1;
     84       static char filename[256];
     85       util_snprintf(filename, sizeof(filename), "cbuf_%u.bmp", frame_no);
     86       debug_dump_surface_bmp(pipe, filename, softpipe->framebuffer.cbufs[0]);
     87       util_snprintf(filename, sizeof(filename), "zsbuf_%u.bmp", frame_no);
     88       debug_dump_surface_bmp(pipe, filename, softpipe->framebuffer.zsbuf);
     89       ++frame_no;
     90    }
     91 #endif
     92 
     93    if (fence)
     94       *fence = (void*)(intptr_t)1;
     95 }
     96 
     97 void
     98 softpipe_flush_wrapped(struct pipe_context *pipe,
     99                        struct pipe_fence_handle **fence,
    100                        unsigned flags)
    101 {
    102    softpipe_flush(pipe, SP_FLUSH_TEXTURE_CACHE, fence);
    103 }
    104 
    105 
    106 /**
    107  * Flush context if necessary.
    108  *
    109  * Returns FALSE if it would have block, but do_not_block was set, TRUE
    110  * otherwise.
    111  *
    112  * TODO: move this logic to an auxiliary library?
    113  */
    114 boolean
    115 softpipe_flush_resource(struct pipe_context *pipe,
    116                         struct pipe_resource *texture,
    117                         unsigned level,
    118                         int layer,
    119                         unsigned flush_flags,
    120                         boolean read_only,
    121                         boolean cpu_access,
    122                         boolean do_not_block)
    123 {
    124    unsigned referenced;
    125 
    126    referenced = softpipe_is_resource_referenced(pipe, texture, level, layer);
    127 
    128    if ((referenced & SP_REFERENCED_FOR_WRITE) ||
    129        ((referenced & SP_REFERENCED_FOR_READ) && !read_only)) {
    130 
    131       /*
    132        * TODO: The semantics of these flush flags are too obtuse. They should
    133        * disappear and the pipe driver should just ensure that all visible
    134        * side-effects happen when they need to happen.
    135        */
    136       if (referenced & SP_REFERENCED_FOR_READ)
    137          flush_flags |= SP_FLUSH_TEXTURE_CACHE;
    138 
    139       if (cpu_access) {
    140          /*
    141           * Flush and wait.
    142           */
    143 
    144          struct pipe_fence_handle *fence = NULL;
    145 
    146          if (do_not_block)
    147             return FALSE;
    148 
    149          softpipe_flush(pipe, flush_flags, &fence);
    150 
    151          if (fence) {
    152             /*
    153              * This is for illustrative purposes only, as softpipe does not
    154              * have fences.
    155              */
    156             pipe->screen->fence_finish(pipe->screen, NULL, fence,
    157                                        PIPE_TIMEOUT_INFINITE);
    158             pipe->screen->fence_reference(pipe->screen, &fence, NULL);
    159          }
    160       } else {
    161          /*
    162           * Just flush.
    163           */
    164 
    165          softpipe_flush(pipe, flush_flags, NULL);
    166       }
    167    }
    168 
    169    return TRUE;
    170 }
    171 
    172 void softpipe_texture_barrier(struct pipe_context *pipe, unsigned flags)
    173 {
    174    struct softpipe_context *softpipe = softpipe_context(pipe);
    175    uint i, sh;
    176 
    177    for (sh = 0; sh < ARRAY_SIZE(softpipe->tex_cache); sh++) {
    178       for (i = 0; i < softpipe->num_sampler_views[sh]; i++) {
    179          sp_flush_tex_tile_cache(softpipe->tex_cache[sh][i]);
    180       }
    181    }
    182 
    183    for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++)
    184       if (softpipe->cbuf_cache[i])
    185          sp_flush_tile_cache(softpipe->cbuf_cache[i]);
    186 
    187    if (softpipe->zsbuf_cache)
    188       sp_flush_tile_cache(softpipe->zsbuf_cache);
    189 
    190    softpipe->dirty_render_cache = FALSE;
    191 }
    192 
    193 void softpipe_memory_barrier(struct pipe_context *pipe, unsigned flags)
    194 {
    195    softpipe_texture_barrier(pipe, 0);
    196 }
    197