1 files changed, 104 insertions, 0 deletions
diff --git a/src/gallium/drivers/softpipe/sp_state_surface.c b/src/gallium/drivers/softpipe/sp_state_surface.c
new file mode 100644
index 0000000000..2db6faeca4
--- /dev/null
+++ b/src/gallium/drivers/softpipe/sp_state_surface.c
@@ -0,0 +1,104 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+/* Authors:  Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include "sp_context.h"
+#include "sp_state.h"
+#include "sp_tile_cache.h"
+
+#include "draw/draw_context.h"
+
+#include "util/u_format.h"
+#include "util/u_inlines.h"
+
+
+/**
+ * XXX this might get moved someday
+ * Set the framebuffer surface info: color buffers, zbuffer, stencil buffer.
+ * Here, we flush the old surfaces and update the tile cache to point to the new
+ * surfaces.
+ */
+void
+softpipe_set_framebuffer_state(struct pipe_context *pipe,
+                               const struct pipe_framebuffer_state *fb)
+{
+   struct softpipe_context *sp = softpipe_context(pipe);
+   uint i;
+
+   draw_flush(sp->draw);
+
+   for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
+      /* check if changing cbuf */
+      if (sp->framebuffer.cbufs[i] != fb->cbufs[i]) {
+         /* flush old */
+         sp_flush_tile_cache(sp->cbuf_cache[i]);
+
+         /* assign new */
+         pipe_surface_reference(&sp->framebuffer.cbufs[i], fb->cbufs[i]);
+
+         /* update cache */
+         sp_tile_cache_set_surface(sp->cbuf_cache[i], fb->cbufs[i]);
+      }
+   }
+
+   sp->framebuffer.nr_cbufs = fb->nr_cbufs;
+
+   /* zbuf changing? */
+   if (sp->framebuffer.zsbuf != fb->zsbuf) {
+      /* flush old */
+      sp_flush_tile_cache(sp->zsbuf_cache);
+
+      /* assign new */
+      pipe_surface_reference(&sp->framebuffer.zsbuf, fb->zsbuf);
+
+      /* update cache */
+      sp_tile_cache_set_surface(sp->zsbuf_cache, fb->zsbuf);
+
+      /* Tell draw module how deep the Z/depth buffer is */
+      if (sp->framebuffer.zsbuf) {
+         int depth_bits;
+         double mrd;
+         depth_bits = util_format_get_component_bits(sp->framebuffer.zsbuf->format,
+                                                     UTIL_FORMAT_COLORSPACE_ZS,
+                                                     0);
+         if (depth_bits > 16) {
+            mrd = 0.0000001;
+         }
+         else {
+            mrd = 0.00002;
+         }
+         draw_set_mrd(sp->draw, mrd);
+      }
+   }
+
+   sp->framebuffer.width = fb->width;
+   sp->framebuffer.height = fb->height;
+
+   sp->dirty |= SP_NEW_FRAMEBUFFER;
+}