2017-05-23 01:33:22 +01:00
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/*
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* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <dlfcn.h>
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2017-07-28 04:48:08 +01:00
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#include "util/u_memory.h"
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#include "pipe/p_screen.h"
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2017-05-23 01:33:22 +01:00
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#include "dri_context.h"
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#include "dri_screen.h"
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static bool
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dri2_is_opencl_interop_loaded_locked(struct dri_screen *screen)
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{
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return screen->opencl_dri_event_add_ref &&
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screen->opencl_dri_event_release &&
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screen->opencl_dri_event_wait &&
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screen->opencl_dri_event_get_fence;
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}
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static bool
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dri2_load_opencl_interop(struct dri_screen *screen)
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{
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#if defined(RTLD_DEFAULT)
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bool success;
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mtx_lock(&screen->opencl_func_mutex);
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if (dri2_is_opencl_interop_loaded_locked(screen)) {
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mtx_unlock(&screen->opencl_func_mutex);
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return true;
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}
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screen->opencl_dri_event_add_ref =
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dlsym(RTLD_DEFAULT, "opencl_dri_event_add_ref");
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screen->opencl_dri_event_release =
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dlsym(RTLD_DEFAULT, "opencl_dri_event_release");
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screen->opencl_dri_event_wait =
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dlsym(RTLD_DEFAULT, "opencl_dri_event_wait");
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screen->opencl_dri_event_get_fence =
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dlsym(RTLD_DEFAULT, "opencl_dri_event_get_fence");
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success = dri2_is_opencl_interop_loaded_locked(screen);
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mtx_unlock(&screen->opencl_func_mutex);
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return success;
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#else
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return false;
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#endif
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}
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struct dri2_fence {
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struct dri_screen *driscreen;
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struct pipe_fence_handle *pipe_fence;
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void *cl_event;
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};
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static unsigned dri2_fence_get_caps(__DRIscreen *_screen)
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{
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struct dri_screen *driscreen = dri_screen(_screen);
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struct pipe_screen *screen = driscreen->base.screen;
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unsigned caps = 0;
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if (screen->get_param(screen, PIPE_CAP_NATIVE_FENCE_FD))
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caps |= __DRI_FENCE_CAP_NATIVE_FD;
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return caps;
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}
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static void *
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dri2_create_fence(__DRIcontext *_ctx)
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{
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struct pipe_context *ctx = dri_context(_ctx)->st->pipe;
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struct dri2_fence *fence = CALLOC_STRUCT(dri2_fence);
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if (!fence)
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return NULL;
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ctx->flush(ctx, &fence->pipe_fence, 0);
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if (!fence->pipe_fence) {
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FREE(fence);
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return NULL;
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}
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fence->driscreen = dri_screen(_ctx->driScreenPriv);
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return fence;
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}
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static void *
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dri2_create_fence_fd(__DRIcontext *_ctx, int fd)
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{
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struct pipe_context *ctx = dri_context(_ctx)->st->pipe;
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struct dri2_fence *fence = CALLOC_STRUCT(dri2_fence);
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if (fd == -1) {
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/* exporting driver created fence, flush: */
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ctx->flush(ctx, &fence->pipe_fence,
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PIPE_FLUSH_DEFERRED | PIPE_FLUSH_FENCE_FD);
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} else {
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/* importing a foreign fence fd: */
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ctx->create_fence_fd(ctx, &fence->pipe_fence, fd);
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}
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if (!fence->pipe_fence) {
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FREE(fence);
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return NULL;
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}
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fence->driscreen = dri_screen(_ctx->driScreenPriv);
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return fence;
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}
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static int
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dri2_get_fence_fd(__DRIscreen *_screen, void *_fence)
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{
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struct dri_screen *driscreen = dri_screen(_screen);
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struct pipe_screen *screen = driscreen->base.screen;
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struct dri2_fence *fence = (struct dri2_fence*)_fence;
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return screen->fence_get_fd(screen, fence->pipe_fence);
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}
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static void *
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dri2_get_fence_from_cl_event(__DRIscreen *_screen, intptr_t cl_event)
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{
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struct dri_screen *driscreen = dri_screen(_screen);
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struct dri2_fence *fence;
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if (!dri2_load_opencl_interop(driscreen))
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return NULL;
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fence = CALLOC_STRUCT(dri2_fence);
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if (!fence)
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return NULL;
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fence->cl_event = (void*)cl_event;
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if (!driscreen->opencl_dri_event_add_ref(fence->cl_event)) {
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free(fence);
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return NULL;
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}
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fence->driscreen = driscreen;
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return fence;
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}
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static void
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dri2_destroy_fence(__DRIscreen *_screen, void *_fence)
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{
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struct dri_screen *driscreen = dri_screen(_screen);
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struct pipe_screen *screen = driscreen->base.screen;
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struct dri2_fence *fence = (struct dri2_fence*)_fence;
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if (fence->pipe_fence)
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screen->fence_reference(screen, &fence->pipe_fence, NULL);
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else if (fence->cl_event)
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driscreen->opencl_dri_event_release(fence->cl_event);
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else
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assert(0);
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FREE(fence);
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}
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static GLboolean
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dri2_client_wait_sync(__DRIcontext *_ctx, void *_fence, unsigned flags,
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uint64_t timeout)
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{
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struct dri2_fence *fence = (struct dri2_fence*)_fence;
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struct dri_screen *driscreen = fence->driscreen;
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struct pipe_screen *screen = driscreen->base.screen;
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/* No need to flush. The context was flushed when the fence was created. */
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if (fence->pipe_fence)
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return screen->fence_finish(screen, NULL, fence->pipe_fence, timeout);
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else if (fence->cl_event) {
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struct pipe_fence_handle *pipe_fence =
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driscreen->opencl_dri_event_get_fence(fence->cl_event);
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if (pipe_fence)
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return screen->fence_finish(screen, NULL, pipe_fence, timeout);
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else
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return driscreen->opencl_dri_event_wait(fence->cl_event, timeout);
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}
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else {
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assert(0);
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return false;
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}
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}
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static void
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dri2_server_wait_sync(__DRIcontext *_ctx, void *_fence, unsigned flags)
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{
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struct pipe_context *ctx = dri_context(_ctx)->st->pipe;
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struct dri2_fence *fence = (struct dri2_fence*)_fence;
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if (ctx->fence_server_sync)
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ctx->fence_server_sync(ctx, fence->pipe_fence);
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}
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const __DRI2fenceExtension dri2FenceExtension = {
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.base = { __DRI2_FENCE, 2 },
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.create_fence = dri2_create_fence,
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.get_fence_from_cl_event = dri2_get_fence_from_cl_event,
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.destroy_fence = dri2_destroy_fence,
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.client_wait_sync = dri2_client_wait_sync,
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.server_wait_sync = dri2_server_wait_sync,
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.get_capabilities = dri2_fence_get_caps,
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.create_fence_fd = dri2_create_fence_fd,
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.get_fence_fd = dri2_get_fence_fd,
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};
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/* vim: set sw=3 ts=8 sts=3 expandtab: */
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