src/gallium/drivers/softpipe/sp_state_surface.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 /* Authors:  Keith Whitwell <keith@tungstengraphics.com>
  29  */
  30 #include "pipe/p_inlines.h"
  31
  32 #include "sp_context.h"
  33 #include "sp_state.h"
  34 #include "sp_surface.h"
  35 #include "sp_tile_cache.h"
  36
  37
  38 /**
  39  * XXX this might get moved someday
  40  * Set the framebuffer surface info: color buffers, zbuffer, stencil buffer.
  41  * Here, we flush the old surfaces and update the tile cache to point to the new
  42  * surfaces.
  43  */
  44 void
  45 softpipe_set_framebuffer_state(struct pipe_context *pipe,
  46                                const struct pipe_framebuffer_state *fb)
  47 {
  48    struct softpipe_context *sp = softpipe_context(pipe);
  49    uint i;
  50
  51    for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
  52       /* check if changing cbuf */
  53       if (sp->framebuffer.cbufs[i] != fb->cbufs[i]) {
  54          /* flush old */
  55          sp_flush_tile_cache(sp, sp->cbuf_cache[i]);
  56
  57          /* assign new */
  58          sp->framebuffer.cbufs[i] = fb->cbufs[i];
  59
  60          /* update cache */
  61          sp_tile_cache_set_surface(sp->cbuf_cache[i], fb->cbufs[i]);
  62       }
  63    }
  64
  65    sp->framebuffer.num_cbufs = fb->num_cbufs;
  66
  67    /* zbuf changing? */
  68    if (sp->framebuffer.zsbuf != fb->zsbuf) {
  69       /* flush old */
  70       sp_flush_tile_cache(sp, sp->zsbuf_cache);
  71
  72       /* assign new */
  73       sp->framebuffer.zsbuf = fb->zsbuf;
  74
  75       /* update cache */
  76       sp_tile_cache_set_surface(sp->zsbuf_cache, fb->zsbuf);
  77    }
  78
  79 #if 0
  80    /* XXX combined depth/stencil here */
  81
  82    /* sbuf changing? */
  83    if (sp->framebuffer.sbuf != fb->sbuf) {
  84       /* flush old */
  85       sp_flush_tile_cache(sp, sp->sbuf_cache_sep);
  86
  87       /* assign new */
  88       sp->framebuffer.sbuf = fb->sbuf;
  89
  90       /* update cache */
  91       if (fb->sbuf != fb->zbuf) {
  92          /* separate stencil buf */
  93          sp->sbuf_cache = sp->sbuf_cache_sep;
  94          sp_tile_cache_set_surface(sp->sbuf_cache, fb->sbuf);
  95       }
  96       else {
  97          /* combined depth/stencil */
  98          sp->sbuf_cache = sp->zbuf_cache;
  99          sp_tile_cache_set_surface(sp->sbuf_cache, fb->sbuf);
 100       }
 101    }
 102 #endif
 103
 104    sp->framebuffer.width = fb->width;
 105    sp->framebuffer.height = fb->height;
 106
 107    sp->dirty |= SP_NEW_FRAMEBUFFER;
 108 }