зеркало из https://github.com/mozilla/gecko-dev.git
98 строки
3.1 KiB
C++
98 строки
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebGL2Context.h"
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#include "GLContext.h"
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#include "WebGLSync.h"
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#include "mozilla/StaticPrefs_webgl.h"
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namespace mozilla {
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// -------------------------------------------------------------------------
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// Sync objects
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RefPtr<WebGLSync> WebGL2Context::FenceSync(GLenum condition, GLbitfield flags) {
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const FuncScope funcScope(*this, "fenceSync");
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if (IsContextLost()) return nullptr;
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if (condition != LOCAL_GL_SYNC_GPU_COMMANDS_COMPLETE) {
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ErrorInvalidEnum("condition must be SYNC_GPU_COMMANDS_COMPLETE");
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return nullptr;
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}
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if (flags != 0) {
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ErrorInvalidValue("flags must be 0");
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return nullptr;
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}
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RefPtr<WebGLSync> globj = new WebGLSync(this, condition, flags);
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mPendingSyncs.emplace_back(globj);
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EnsurePollPendingSyncs_Pending();
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return globj;
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}
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GLenum WebGL2Context::ClientWaitSync(WebGLSync& sync, GLbitfield flags,
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GLuint64 timeout) {
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const FuncScope funcScope(*this, "clientWaitSync");
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if (IsContextLost()) return LOCAL_GL_WAIT_FAILED;
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if (!ValidateObject("sync", sync)) return LOCAL_GL_WAIT_FAILED;
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if (flags != 0 && flags != LOCAL_GL_SYNC_FLUSH_COMMANDS_BIT) {
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ErrorInvalidValue("`flags` must be SYNC_FLUSH_COMMANDS_BIT or 0.");
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return LOCAL_GL_WAIT_FAILED;
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}
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const auto ret = sync.ClientWaitSync(flags, timeout);
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return UnderlyingValue(ret);
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}
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void WebGLContext::EnsurePollPendingSyncs_Pending() const {
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if (mPollPendingSyncs_Pending) return;
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mPollPendingSyncs_Pending = NS_NewRunnableFunction(
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"WebGLContext::PollPendingSyncs", [weak = WeakPtr{this}]() {
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if (const auto strong = RefPtr{weak.get()}) {
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strong->mPollPendingSyncs_Pending = nullptr;
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strong->PollPendingSyncs();
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if (strong->mPendingSyncs.size()) {
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// Not done yet...
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strong->EnsurePollPendingSyncs_Pending();
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}
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}
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});
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if (const auto eventTarget = GetCurrentSerialEventTarget()) {
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eventTarget->DelayedDispatch(do_AddRef(mPollPendingSyncs_Pending),
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kPollPendingSyncs_DelayMs);
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} else {
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NS_WARNING(
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"[EnsurePollPendingSyncs_Pending] GetCurrentSerialEventTarget() -> "
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"nullptr");
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}
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}
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void WebGLContext::PollPendingSyncs() const {
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const FuncScope funcScope(*this, "<pollPendingSyncs>");
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if (IsContextLost()) return;
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while (mPendingSyncs.size()) {
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if (const auto sync = RefPtr{mPendingSyncs.front().get()}) {
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const auto res = sync->ClientWaitSync(0, 0);
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switch (res) {
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case ClientWaitSyncResult::WAIT_FAILED:
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case ClientWaitSyncResult::TIMEOUT_EXPIRED:
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return;
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case ClientWaitSyncResult::CONDITION_SATISFIED:
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case ClientWaitSyncResult::ALREADY_SIGNALED:
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// Communication back to child happens in sync->lientWaitSync.
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break;
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}
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}
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mPendingSyncs.pop_front();
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}
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}
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} // namespace mozilla
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