/********************************************************** * 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 "os/os_thread.h" #include "util/list.h" /* Guess the storage size of cached surfaces and try and keep it under * this amount: */ #define SVGA_HOST_SURFACE_CACHE_BYTES (16 * 1024 * 1024) /* Maximum number of discrete surfaces in the cache: */ #define SVGA_HOST_SURFACE_CACHE_SIZE 1024 /* Number of hash buckets: */ #define SVGA_HOST_SURFACE_CACHE_BUCKETS 256 struct svga_winsys_surface; struct svga_screen; struct svga_context; /** * Same as svga_winsys_screen::surface_create. */ struct svga_host_surface_cache_key { SVGA3dSurfaceAllFlags flags; SVGA3dSurfaceFormat format; SVGA3dSize size; uint32_t numFaces:3; uint32_t arraySize:16; uint32_t numMipLevels:6; uint32_t cachable:1; /* False if this is a shared surface */ uint32_t sampleCount:5; uint32_t scanout:1; uint32_t coherent:1; }; 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 (entry->handle = NULL) * 2. holding a buffer in a validate list * 3. holding a buffer in an invalidate list * 4. holding a flushed buffer (not in any validate list) with an active fence * 5. holding a flushed buffer with an expired fence * * An entry progresses from 1 -> 2 -> 3 -> 4 -> 5. When we need an entry to put a * buffer into we preferentially take from 1, or from the least recently used * buffer from 4/5. */ struct svga_host_surface_cache { mtx_t 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 list (2) */ struct list_head validated; /* Entries with buffers still in invalidate list (3) */ struct list_head invalidated; /** 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]; /** Sum of sizes of all surfaces (in bytes) */ unsigned total_size; }; void svga_screen_cache_cleanup(struct svga_screen *svgascreen); void svga_screen_cache_flush(struct svga_screen *svgascreen, struct svga_context *svga, 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, unsigned bind_flags, enum pipe_resource_usage usage, boolean *validated, 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); void svga_screen_cache_dump(const struct svga_screen *svgascreen); #endif /* SVGA_SCREEN_CACHE_H_ */