1 files changed, 136 insertions, 0 deletions
diff --git a/dom/canvas/WebGL2ContextSync.cpp b/dom/canvas/WebGL2ContextSync.cpp
new file mode 100644
index 000000000..5a5ac2b0a
--- /dev/null
+++ b/dom/canvas/WebGL2ContextSync.cpp
@@ -0,0 +1,136 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "WebGL2Context.h"
+
+#include "GLContext.h"
+#include "WebGLSync.h"
+
+namespace mozilla {
+
+// -------------------------------------------------------------------------
+// Sync objects
+
+already_AddRefed<WebGLSync>
+WebGL2Context::FenceSync(GLenum condition, GLbitfield flags)
+{
+    if (IsContextLost())
+        return nullptr;
+
+    if (condition != LOCAL_GL_SYNC_GPU_COMMANDS_COMPLETE) {
+        ErrorInvalidEnum("fenceSync: condition must be SYNC_GPU_COMMANDS_COMPLETE");
+        return nullptr;
+    }
+
+    if (flags != 0) {
+        ErrorInvalidValue("fenceSync: flags must be 0");
+        return nullptr;
+    }
+
+    MakeContextCurrent();
+    RefPtr<WebGLSync> globj = new WebGLSync(this, condition, flags);
+    return globj.forget();
+}
+
+bool
+WebGL2Context::IsSync(const WebGLSync* sync)
+{
+    if (!ValidateIsObject("isSync", sync))
+        return false;
+
+    return true;
+}
+
+void
+WebGL2Context::DeleteSync(WebGLSync* sync)
+{
+    if (!ValidateDeleteObject("deleteSync", sync))
+        return;
+
+    sync->RequestDelete();
+}
+
+GLenum
+WebGL2Context::ClientWaitSync(const WebGLSync& sync, GLbitfield flags, GLuint64 timeout)
+{
+    const char funcName[] = "clientWaitSync";
+    if (IsContextLost())
+        return LOCAL_GL_WAIT_FAILED;
+
+    if (!ValidateObject(funcName, sync))
+        return LOCAL_GL_WAIT_FAILED;
+
+    if (flags != 0 && flags != LOCAL_GL_SYNC_FLUSH_COMMANDS_BIT) {
+        ErrorInvalidValue("%s: `flags` must be SYNC_FLUSH_COMMANDS_BIT or 0.", funcName);
+        return LOCAL_GL_WAIT_FAILED;
+    }
+
+    if (timeout > kMaxClientWaitSyncTimeoutNS) {
+        ErrorInvalidOperation("%s: `timeout` must not exceed %s nanoseconds.", funcName,
+                              "MAX_CLIENT_WAIT_TIMEOUT_WEBGL");
+        return LOCAL_GL_WAIT_FAILED;
+    }
+
+    MakeContextCurrent();
+    return gl->fClientWaitSync(sync.mGLName, flags, timeout);
+}
+
+void
+WebGL2Context::WaitSync(const WebGLSync& sync, GLbitfield flags, GLint64 timeout)
+{
+    const char funcName[] = "waitSync";
+    if (IsContextLost())
+        return;
+
+    if (!ValidateObject(funcName, sync))
+        return;
+
+    if (flags != 0) {
+        ErrorInvalidValue("%s: `flags` must be 0.", funcName);
+        return;
+    }
+
+    if (timeout != -1) {
+        ErrorInvalidValue("%s: `timeout` must be TIMEOUT_IGNORED.", funcName);
+        return;
+    }
+
+    MakeContextCurrent();
+    gl->fWaitSync(sync.mGLName, flags, LOCAL_GL_TIMEOUT_IGNORED);
+}
+
+void
+WebGL2Context::GetSyncParameter(JSContext*, const WebGLSync& sync, GLenum pname,
+                                JS::MutableHandleValue retval)
+{
+    const char funcName[] = "getSyncParameter";
+    retval.setNull();
+    if (IsContextLost())
+        return;
+
+    if (!ValidateObject(funcName, sync))
+        return;
+
+    ////
+
+    gl->MakeCurrent();
+
+    GLint result = 0;
+    switch (pname) {
+    case LOCAL_GL_OBJECT_TYPE:
+    case LOCAL_GL_SYNC_STATUS:
+    case LOCAL_GL_SYNC_CONDITION:
+    case LOCAL_GL_SYNC_FLAGS:
+        gl->fGetSynciv(sync.mGLName, pname, 1, nullptr, &result);
+        retval.set(JS::Int32Value(result));
+        return;
+
+    default:
+        ErrorInvalidEnum("%s: Invalid pname 0x%04x", funcName, pname);
+        return;
+    }
+}
+
+} // namespace mozilla