summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/svga/svga_screen_cache.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/drivers/svga/svga_screen_cache.h')
-rw-r--r--src/gallium/drivers/svga/svga_screen_cache.h135
1 files changed, 135 insertions, 0 deletions
diff --git a/src/gallium/drivers/svga/svga_screen_cache.h b/src/gallium/drivers/svga/svga_screen_cache.h
new file mode 100644
index 00000000000..1bbe9877688
--- /dev/null
+++ b/src/gallium/drivers/svga/svga_screen_cache.h
@@ -0,0 +1,135 @@
+/**********************************************************
+ * Copyright 2008-2009 VMware, Inc. 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, sublicense, 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 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
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * 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.
+ *
+ **********************************************************/
+
+#ifndef SVGA_SCREEN_CACHE_H_
+#define SVGA_SCREEN_CACHE_H_
+
+
+#include "svga_types.h"
+#include "svga_reg.h"
+#include "svga3d_reg.h"
+
+#include "pipe/p_thread.h"
+
+#include "util/u_double_list.h"
+
+
+/* TODO: Reduce this once we don't allocate an index buffer per draw call */
+#define SVGA_HOST_SURFACE_CACHE_SIZE 1024
+
+#define SVGA_HOST_SURFACE_CACHE_BUCKETS 64
+
+
+struct svga_winsys_surface;
+struct svga_screen;
+
+/**
+ * Same as svga_winsys_screen::surface_create.
+ */
+struct svga_host_surface_cache_key
+{
+ SVGA3dSurfaceFlags flags;
+ SVGA3dSurfaceFormat format;
+ SVGA3dSize size;
+ uint32_t numFaces;
+ uint32_t numMipLevels;
+};
+
+
+struct svga_host_surface_cache_entry
+{
+ /**
+ * Head for the LRU list, svga_host_surface_cache::unused, and
+ * svga_host_surface_cache::empty
+ */
+ struct list_head head;
+
+ /** Head for the bucket lists. */
+ struct list_head bucket_head;
+
+ struct svga_host_surface_cache_key key;
+ struct svga_winsys_surface *handle;
+
+ struct pipe_fence_handle *fence;
+};
+
+
+/**
+ * Cache of the host surfaces.
+ *
+ * A cache entry can be in the following stages:
+ * 1. empty
+ * 2. holding a buffer in a validate list
+ * 3. holding a flushed buffer (not in any validate list) with an active fence
+ * 4. holding a flushed buffer with an expired fence
+ *
+ * An entry progresses from 1 -> 2 -> 3 -> 4. When we need an entry to put a
+ * buffer into we preferencial take from 1, or from the least recentely used
+ * buffer from 3/4.
+ */
+struct svga_host_surface_cache
+{
+ pipe_mutex mutex;
+
+ /* Unused buffers are put in buckets to speed up lookups */
+ struct list_head bucket[SVGA_HOST_SURFACE_CACHE_BUCKETS];
+
+ /* Entries with unused buffers, ordered from most to least recently used
+ * (3 and 4) */
+ struct list_head unused;
+
+ /* Entries with buffers still in validate lists (2) */
+ struct list_head validated;
+
+ /** Empty entries (1) */
+ struct list_head empty;
+
+ /** The actual storage for the entries */
+ struct svga_host_surface_cache_entry entries[SVGA_HOST_SURFACE_CACHE_SIZE];
+};
+
+
+void
+svga_screen_cache_cleanup(struct svga_screen *svgascreen);
+
+void
+svga_screen_cache_flush(struct svga_screen *svgascreen,
+ struct pipe_fence_handle *fence);
+
+enum pipe_error
+svga_screen_cache_init(struct svga_screen *svgascreen);
+
+
+struct svga_winsys_surface *
+svga_screen_surface_create(struct svga_screen *svgascreen,
+ struct svga_host_surface_cache_key *key);
+
+void
+svga_screen_surface_destroy(struct svga_screen *svgascreen,
+ const struct svga_host_surface_cache_key *key,
+ struct svga_winsys_surface **handle);
+
+
+#endif /* SVGA_SCREEN_CACHE_H_ */