From def92d1b8e9d373e2f6f27c366d578d97d8960c6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 15 May 2024 05:34:50 +0200
Subject: Merging upstream version 126.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 dom/canvas/WebGLSync.cpp | 35 ++++++++++++++++++++++++++++++++---
 1 file changed, 32 insertions(+), 3 deletions(-)

(limited to 'dom/canvas/WebGLSync.cpp')

diff --git a/dom/canvas/WebGLSync.cpp b/dom/canvas/WebGLSync.cpp
index e4b196ab04..6a8e9403f7 100644
--- a/dom/canvas/WebGLSync.cpp
+++ b/dom/canvas/WebGLSync.cpp
@@ -23,10 +23,39 @@ WebGLSync::~WebGLSync() {
   mContext->gl->fDeleteSync(mGLName);
 }
 
-void WebGLSync::MarkSignaled() const {
-  if (mContext->mCompletedFenceId < mFenceId) {
-    mContext->mCompletedFenceId = mFenceId;
+ClientWaitSyncResult WebGLSync::ClientWaitSync(const GLbitfield flags,
+                                               const GLuint64 timeout) {
+  if (!mContext) return ClientWaitSyncResult::WAIT_FAILED;
+  if (IsKnownComplete()) return ClientWaitSyncResult::ALREADY_SIGNALED;
+
+  auto ret = ClientWaitSyncResult::WAIT_FAILED;
+  bool newlyComplete = false;
+  const auto status = static_cast<ClientWaitSyncResult>(
+      mContext->gl->fClientWaitSync(mGLName, 0, 0));
+  switch (status) {
+    case ClientWaitSyncResult::TIMEOUT_EXPIRED:  // Poll() -> false
+    case ClientWaitSyncResult::WAIT_FAILED:      // Error
+      ret = status;
+      break;
+    case ClientWaitSyncResult::CONDITION_SATISFIED:  // Should never happen, but
+                                                     // tolerate it.
+    case ClientWaitSyncResult::ALREADY_SIGNALED:     // Poll() -> true
+      newlyComplete = true;
+      ret = status;
+      break;
+  }
+
+  if (newlyComplete) {
+    if (mContext->mCompletedFenceId < mFenceId) {
+      mContext->mCompletedFenceId = mFenceId;
+    }
+    MOZ_RELEASE_ASSERT(mOnCompleteTasks);
+    for (const auto& task : *mOnCompleteTasks) {
+      (*task)();
+    }
+    mOnCompleteTasks = {};
   }
+  return ret;
 }
 
 }  // namespace mozilla
-- 
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