src/gallium/drivers/softpipe/sp_state_surface.c

   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
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  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@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/format/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 | SP_NEW_TEXTURE;
 101 }