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// Copyright 2024 The Chromium Authors
// 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_XR_XR_GPU_SWAP_CHAIN_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_XR_XR_GPU_SWAP_CHAIN_H_
#include "third_party/blink/renderer/modules/webgpu/gpu_texture.h"
#include "third_party/blink/renderer/modules/xr/xr_swap_chain.h"
#include "third_party/blink/renderer/platform/graphics/gpu/webgpu_swap_buffer_provider.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/member.h"
namespace blink {
class GPUDevice;
class GPUTexture;
class XRGPUSwapChain : public XRSwapChain<GPUTexture> {
public:
explicit XRGPUSwapChain(GPUDevice*);
~XRGPUSwapChain() override = default;
GPUDevice* device() { return device_.Get(); }
virtual const wgpu::TextureDescriptor& descriptor() const = 0;
void Trace(Visitor* visitor) const override;
protected:
void ClearCurrentTexture(wgpu::CommandEncoder);
private:
Member<GPUDevice> device_;
};
// A texture swap chain that is not communicated back to the compositor, used
// for things like depth/stencil attachments that don't assist reprojection.
class XRGPUStaticSwapChain final : public XRGPUSwapChain {
public:
XRGPUStaticSwapChain(GPUDevice*, const wgpu::TextureDescriptor&);
GPUTexture* ProduceTexture() override;
void OnFrameEnd() override;
const wgpu::TextureDescriptor& descriptor() const override {
return descriptor_;
}
private:
wgpu::TextureDescriptor descriptor_;
};
// A swap chain backed by Mailboxes
class XRGPUMailboxSwapChain final : public XRGPUSwapChain {
public:
XRGPUMailboxSwapChain(GPUDevice* device, const wgpu::TextureDescriptor& desc);
~XRGPUMailboxSwapChain() override = default;
GPUTexture* ProduceTexture() override;
void OnFrameEnd() override;
const wgpu::TextureDescriptor& descriptor() const override {
return descriptor_;
}
private:
wgpu::TextureDescriptor descriptor_;
wgpu::DawnTextureInternalUsageDescriptor texture_internal_usage_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_XR_XR_GPU_SWAP_CHAIN_H_
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