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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef WebGLGetBufferSubDataAsync_h
#define WebGLGetBufferSubDataAsync_h
#include "bindings/core/v8/ScriptPromise.h"
#include "modules/webgl/WebGLExtension.h"
namespace blink {
class WebGL2RenderingContextBase;
class WebGLGetBufferSubDataAsync final : public WebGLExtension {
DEFINE_WRAPPERTYPEINFO();
public:
static WebGLGetBufferSubDataAsync* create(WebGLRenderingContextBase*);
static bool supported(WebGLRenderingContextBase*);
static const char* extensionName();
WebGLExtensionName name() const override;
ScriptPromise getBufferSubDataAsync(ScriptState*,
GLenum target,
GLintptr srcByteOffset,
DOMArrayBufferView*,
GLuint dstOffset,
GLuint length);
private:
explicit WebGLGetBufferSubDataAsync(WebGLRenderingContextBase*);
};
class WebGLGetBufferSubDataAsyncCallback
: public GarbageCollected<WebGLGetBufferSubDataAsyncCallback> {
public:
WebGLGetBufferSubDataAsyncCallback(WebGL2RenderingContextBase*,
ScriptPromiseResolver*,
void* shmReadbackResultData,
GLuint commandsIssuedQueryID,
DOMArrayBufferView*,
void* destinationDataPtr,
long long destinationByteLength);
void destroy();
void resolve();
DECLARE_TRACE();
private:
WeakMember<WebGL2RenderingContextBase> m_context;
Member<ScriptPromiseResolver> m_promiseResolver;
// Pointer to shared memory where the gpu readback result is stored.
void* m_shmReadbackResultData;
// ID of the GL query used to call this callback.
GLuint m_commandsIssuedQueryID;
// ArrayBufferView returned from the promise.
Member<DOMArrayBufferView> m_destinationArrayBufferView;
// Pointer into the offset into destinationArrayBufferView.
void* m_destinationDataPtr;
// Size in bytes of the copy operation being performed.
long long m_destinationByteLength;
};
} // namespace blink
#endif // WebGLGetBufferSubDataAsync_h
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