| |
| /********************************************************** |
| * 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/u_double_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; |
| |
| /** |
| * Same as svga_winsys_screen::surface_create. |
| */ |
| struct svga_host_surface_cache_key |
| { |
| SVGA3dSurfaceFlags flags; |
| SVGA3dSurfaceFormat format; |
| SVGA3dSize size; |
| uint32_t numFaces:24; |
| uint32_t numMipLevels:7; |
| uint32_t cachable:1; /* False if this is a shared surface */ |
| }; |
| |
| |
| 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 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]; |
| |
| /** 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 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_ */ |