| /**************************************************************************** |
| * Copyright (C) 2015 Intel Corporation. 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 (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 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. |
| ***************************************************************************/ |
| |
| #include "pipe/p_screen.h" |
| #include "util/u_memory.h" |
| #include "os/os_time.h" |
| |
| #include "swr_context.h" |
| #include "swr_screen.h" |
| #include "swr_fence.h" |
| |
| #if defined(PIPE_CC_MSVC) // portable thread yield |
| #define sched_yield SwitchToThread |
| #endif |
| |
| /* |
| * Fence callback, called by back-end thread on completion of all rendering up |
| * to SwrSync call. |
| */ |
| static void |
| swr_fence_cb(uint64_t userData, uint64_t userData2, uint64_t userData3) |
| { |
| struct swr_fence *fence = (struct swr_fence *)userData; |
| |
| /* Complete all work attached to the fence */ |
| swr_fence_do_work(fence); |
| |
| /* Correct value is in SwrSync data, and not the fence write field. */ |
| fence->read = userData2; |
| } |
| |
| /* |
| * Submit an existing fence. |
| */ |
| void |
| swr_fence_submit(struct swr_context *ctx, struct pipe_fence_handle *fh) |
| { |
| struct swr_fence *fence = swr_fence(fh); |
| |
| fence->write++; |
| fence->pending = TRUE; |
| SwrSync(ctx->swrContext, swr_fence_cb, (uint64_t)fence, fence->write, 0); |
| } |
| |
| /* |
| * Create a new fence object. |
| */ |
| struct pipe_fence_handle * |
| swr_fence_create() |
| { |
| static int fence_id = 0; |
| struct swr_fence *fence = CALLOC_STRUCT(swr_fence); |
| if (!fence) |
| return NULL; |
| |
| pipe_reference_init(&fence->reference, 1); |
| fence->id = fence_id++; |
| fence->work.tail = &fence->work.head; |
| |
| return (struct pipe_fence_handle *)fence; |
| } |
| |
| /** Destroy a fence. Called when refcount hits zero. */ |
| static void |
| swr_fence_destroy(struct swr_fence *fence) |
| { |
| /* Complete any work left if fence was not submitted */ |
| swr_fence_do_work(fence); |
| FREE(fence); |
| } |
| |
| /** |
| * Set ptr = fence, with reference counting |
| */ |
| void |
| swr_fence_reference(struct pipe_screen *screen, |
| struct pipe_fence_handle **ptr, |
| struct pipe_fence_handle *f) |
| { |
| struct swr_fence *fence = swr_fence(f); |
| struct swr_fence *old; |
| |
| if (likely(ptr)) { |
| old = swr_fence(*ptr); |
| *ptr = f; |
| } else { |
| old = NULL; |
| } |
| |
| if (pipe_reference(&old->reference, &fence->reference)) { |
| swr_fence_finish(screen, NULL, (struct pipe_fence_handle *) old, 0); |
| swr_fence_destroy(old); |
| } |
| } |
| |
| |
| /* |
| * Wait for the fence to finish. |
| */ |
| boolean |
| swr_fence_finish(struct pipe_screen *screen, |
| struct pipe_context *ctx, |
| struct pipe_fence_handle *fence_handle, |
| uint64_t timeout) |
| { |
| while (!swr_is_fence_done(fence_handle)) |
| sched_yield(); |
| |
| swr_fence(fence_handle)->pending = FALSE; |
| |
| return TRUE; |
| } |
| |
| |
| uint64_t |
| swr_get_timestamp(struct pipe_screen *screen) |
| { |
| return os_time_get_nano(); |
| } |
| |
| |
| void |
| swr_fence_init(struct pipe_screen *p_screen) |
| { |
| p_screen->fence_reference = swr_fence_reference; |
| p_screen->fence_finish = swr_fence_finish; |
| p_screen->get_timestamp = swr_get_timestamp; |
| |
| /* Create persistant StoreTiles "flush" fence, used to signal completion |
| * of flushing tile state back to resource texture, via StoreTiles. */ |
| struct swr_screen *screen = swr_screen(p_screen); |
| screen->flush_fence = swr_fence_create(); |
| } |