1 files changed, 146 insertions, 0 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_flush.c b/src/gallium/drivers/llvmpipe/lp_flush.c
new file mode 100644
index 0000000000..0cd288bb73
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_flush.c
@@ -0,0 +1,146 @@
+/**************************************************************************
+ * 
+ * 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.
+ * 
+ **************************************************************************/
+
+/* Author:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+
+#include "pipe/p_defines.h"
+#include "util/u_string.h"
+#include "draw/draw_context.h"
+#include "lp_flush.h"
+#include "lp_context.h"
+#include "lp_setup.h"
+
+
+/**
+ * \param flags  bitmask of PIPE_FLUSH_x flags
+ * \param fence  if non-null, returns pointer to a fench which can be waited on
+ */
+void
+llvmpipe_flush( struct pipe_context *pipe,
+		unsigned flags,
+                struct pipe_fence_handle **fence )
+{
+   struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
+
+   draw_flush(llvmpipe->draw);
+
+   if (fence) {
+      /* if we're going to flush the setup/rasterization modules, emit
+       * a fence.
+       * XXX this (and the code below) may need fine tuning...
+       */
+      *fence = lp_setup_fence( llvmpipe->setup );
+   }
+
+   /* ask the setup module to flush */
+   lp_setup_flush(llvmpipe->setup, flags);
+
+   /* Enable to dump BMPs of the color/depth buffers each frame */
+   if (0) {
+      if (flags & PIPE_FLUSH_FRAME) {
+         static unsigned frame_no = 1;
+         char filename[256];
+         unsigned i;
+
+         for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
+            util_snprintf(filename, sizeof(filename), "cbuf%u_%u", i, frame_no);
+            debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.cbufs[0]);
+         }
+
+         if (0) {
+            util_snprintf(filename, sizeof(filename), "zsbuf_%u", frame_no);
+            debug_dump_surface_bmp(&llvmpipe->pipe, filename, llvmpipe->framebuffer.zsbuf);
+         }
+
+         ++frame_no;
+      }
+   }
+}
+
+
+/**
+ * Flush context if necessary.
+ *
+ * Returns FALSE if it would have block, but do_not_block was set, TRUE
+ * otherwise.
+ *
+ * TODO: move this logic to an auxiliary library?
+ */
+boolean
+llvmpipe_flush_resource(struct pipe_context *pipe,
+                        struct pipe_resource *resource,
+                        unsigned face,
+                        unsigned level,
+                        unsigned flush_flags,
+                        boolean read_only,
+                        boolean cpu_access,
+                        boolean do_not_block)
+{
+   unsigned referenced;
+
+   referenced = pipe->is_resource_referenced(pipe, resource, face, level);
+
+   if ((referenced & PIPE_REFERENCED_FOR_WRITE) ||
+       ((referenced & PIPE_REFERENCED_FOR_READ) && !read_only)) {
+
+      if (cpu_access) {
+         /*
+          * Flush and wait.
+          */
+
+         struct pipe_fence_handle *fence = NULL;
+
+         if (do_not_block)
+            return FALSE;
+
+         /*
+          * Do the unswizzling in parallel.
+          *
+          * XXX: Don't abuse the PIPE_FLUSH_FRAME flag for this.
+          */
+         flush_flags |= PIPE_FLUSH_FRAME;
+
+         llvmpipe_flush(pipe, flush_flags, &fence);
+
+         if (fence) {
+            pipe->screen->fence_finish(pipe->screen, fence, 0);
+            pipe->screen->fence_reference(pipe->screen, &fence, NULL);
+         }
+      } else {
+         /*
+          * Just flush.
+          */
+
+         llvmpipe_flush(pipe, flush_flags, NULL);
+      }
+   }
+
+   return TRUE;
+}