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// Copyright 2019 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 THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGPU_GPU_BUFFER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGPU_GPU_BUFFER_H_
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/core/typed_arrays/array_buffer_view_helpers.h"
#include "third_party/blink/renderer/core/typed_arrays/flexible_array_buffer_view.h"
#include "third_party/blink/renderer/modules/webgpu/dawn_object.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
namespace blink {
class DOMArrayBuffer;
class GPUBufferDescriptor;
class ScriptPromiseResolver;
class GPUBuffer : public DawnObject<WGPUBuffer> {
DEFINE_WRAPPERTYPEINFO();
public:
static GPUBuffer* Create(GPUDevice* device,
const GPUBufferDescriptor* webgpu_desc);
static std::pair<GPUBuffer*, DOMArrayBuffer*> CreateMapped(
GPUDevice* device,
const GPUBufferDescriptor* webgpu_desc,
ExceptionState& exception_state);
explicit GPUBuffer(GPUDevice* device, uint64_t size, WGPUBuffer buffer);
~GPUBuffer() override;
void Trace(Visitor* visitor) override;
// gpu_buffer.idl
void setSubData(uint64_t dst_byte_offset,
const FlexibleArrayBufferView& src,
uint64_t src_byte_offset,
uint64_t byte_length,
ExceptionState& exception_state);
ScriptPromise mapReadAsync(ScriptState* script_state,
ExceptionState& exception_state);
ScriptPromise mapWriteAsync(ScriptState* script_state,
ExceptionState& exception_state);
void unmap(ScriptState* script_state);
void destroy(ScriptState* script_state);
// TODO(crbug.com/877147): implement GPUBuffer.
private:
void OnMapAsyncCallback(ScriptPromiseResolver* resolver,
WGPUBufferMapAsyncStatus status,
void* data,
uint64_t data_length);
void DetachArrayBufferForCurrentMapping(ScriptState* script_state);
uint64_t size_;
Member<DOMArrayBuffer> mapped_buffer_;
DISALLOW_COPY_AND_ASSIGN(GPUBuffer);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGPU_GPU_BUFFER_H_
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