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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 /* Authors:  Keith Whitwell <keithw (at) vmware.com>
     29  */
     30 
     31 #include "sp_context.h"
     32 #include "sp_state.h"
     33 #include "sp_tile_cache.h"
     34 
     35 #include "draw/draw_context.h"
     36 
     37 #include "util/u_format.h"
     38 #include "util/u_inlines.h"
     39 
     40 
     41 /**
     42  * XXX this might get moved someday
     43  * Set the framebuffer surface info: color buffers, zbuffer, stencil buffer.
     44  * Here, we flush the old surfaces and update the tile cache to point to the new
     45  * surfaces.
     46  */
     47 void
     48 softpipe_set_framebuffer_state(struct pipe_context *pipe,
     49                                const struct pipe_framebuffer_state *fb)
     50 {
     51    struct softpipe_context *sp = softpipe_context(pipe);
     52    uint i;
     53 
     54    draw_flush(sp->draw);
     55 
     56    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
     57       struct pipe_surface *cb = i < fb->nr_cbufs ? fb->cbufs[i] : NULL;
     58 
     59       /* check if changing cbuf */
     60       if (sp->framebuffer.cbufs[i] != cb) {
     61          /* flush old */
     62          sp_flush_tile_cache(sp->cbuf_cache[i]);
     63 
     64          /* assign new */
     65          pipe_surface_reference(&sp->framebuffer.cbufs[i], cb);
     66 
     67          /* update cache */
     68          sp_tile_cache_set_surface(sp->cbuf_cache[i], cb);
     69       }
     70    }
     71 
     72    sp->framebuffer.nr_cbufs = fb->nr_cbufs;
     73 
     74    /* zbuf changing? */
     75    if (sp->framebuffer.zsbuf != fb->zsbuf) {
     76       /* flush old */
     77       sp_flush_tile_cache(sp->zsbuf_cache);
     78 
     79       /* assign new */
     80       pipe_surface_reference(&sp->framebuffer.zsbuf, fb->zsbuf);
     81 
     82       /* update cache */
     83       sp_tile_cache_set_surface(sp->zsbuf_cache, fb->zsbuf);
     84 
     85       /* Tell draw module how deep the Z/depth buffer is
     86        *
     87        * If no depth buffer is bound, send the utility function the
     88        * format for no bound depth (PIPE_FORMAT_NONE).
     89        */
     90       draw_set_zs_format(sp->draw,
     91                          (sp->framebuffer.zsbuf) ?
     92                             sp->framebuffer.zsbuf->format : PIPE_FORMAT_NONE);
     93    }
     94 
     95    sp->framebuffer.width = fb->width;
     96    sp->framebuffer.height = fb->height;
     97    sp->framebuffer.samples = fb->samples;
     98    sp->framebuffer.layers = fb->layers;
     99 
    100    sp->dirty |= SP_NEW_FRAMEBUFFER;
    101 }
    102