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-rw-r--r--dom/canvas/WebGLQuery.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/dom/canvas/WebGLQuery.h b/dom/canvas/WebGLQuery.h
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+++ b/dom/canvas/WebGLQuery.h
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+/* -*- 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/. */
+
+#ifndef WEBGL_QUERY_H_
+#define WEBGL_QUERY_H_
+
+#include "mozilla/LinkedList.h"
+#include "nsWrapperCache.h"
+
+#include "WebGLObjectModel.h"
+#include "nsThreadUtils.h"
+
+namespace mozilla {
+
+class WebGLQuery final
+ : public nsWrapperCache
+ , public WebGLRefCountedObject<WebGLQuery>
+ , public LinkedListElement<WebGLQuery>
+{
+ friend class AvailableRunnable;
+ friend class WebGLRefCountedObject<WebGLQuery>;
+
+public:
+ const GLuint mGLName;
+private:
+ GLenum mTarget;
+ WebGLRefPtr<WebGLQuery>* mActiveSlot;
+
+ bool mCanBeAvailable; // Track whether the event loop has spun
+
+ ////
+public:
+ GLenum Target() const { return mTarget; }
+ bool IsActive() const { return bool(mActiveSlot); }
+
+ ////
+
+ NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLQuery)
+ NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLQuery)
+
+ explicit WebGLQuery(WebGLContext* webgl);
+
+private:
+ ~WebGLQuery() {
+ DeleteOnce();
+ };
+
+ // WebGLRefCountedObject
+ void Delete();
+
+public:
+ WebGLContext* GetParentObject() const { return mContext; }
+ virtual JSObject* WrapObject(JSContext* cx, JS::Handle<JSObject*> givenProto) override;
+
+ ////
+
+ void BeginQuery(GLenum target, WebGLRefPtr<WebGLQuery>& slot);
+ void DeleteQuery();
+ void EndQuery();
+ void GetQueryParameter(GLenum pname, JS::MutableHandleValue retval) const;
+ bool IsQuery() const;
+ void QueryCounter(const char* funcName, GLenum target);
+};
+
+} // namespace mozilla
+
+#endif // WEBGL_QUERY_H_