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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.
#include "third_party/blink/renderer/modules/xr/xr_gpu_projection_layer.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_xr_gpu_projection_layer_init.h"
#include "third_party/blink/renderer/modules/webgpu/gpu_device.h"
#include "third_party/blink/renderer/modules/webgpu/gpu_texture.h"
#include "third_party/blink/renderer/modules/xr/xr_frame_provider.h"
#include "third_party/blink/renderer/modules/xr/xr_gpu_binding.h"
#include "third_party/blink/renderer/modules/xr/xr_gpu_swap_chain.h"
#include "third_party/blink/renderer/modules/xr/xr_session.h"
#include "third_party/blink/renderer/modules/xr/xr_system.h"
#include "third_party/blink/renderer/platform/graphics/accelerated_static_bitmap_image.h"
#include "third_party/blink/renderer/platform/graphics/gpu/webgpu_mailbox_texture.h"
#include "third_party/skia/include/core/SkSurface.h"
namespace blink {
XRGPUProjectionLayer::XRGPUProjectionLayer(
XRGPUBinding* binding,
XRGPUSwapChain* color_swap_chain,
XRGPUSwapChain* depth_stencil_swap_chain)
: XRProjectionLayer(binding),
device_(binding->device()),
color_swap_chain_(color_swap_chain),
depth_stencil_swap_chain_(depth_stencil_swap_chain) {
CHECK(color_swap_chain_);
color_swap_chain_->SetLayer(this);
if (depth_stencil_swap_chain_) {
depth_stencil_swap_chain_->SetLayer(this);
}
}
uint16_t XRGPUProjectionLayer::textureWidth() const {
return color_swap_chain_->descriptor().size.width;
}
uint16_t XRGPUProjectionLayer::textureHeight() const {
return color_swap_chain_->descriptor().size.height;
}
uint16_t XRGPUProjectionLayer::textureArrayLength() const {
return color_swap_chain_->descriptor().size.depthOrArrayLayers;
}
void XRGPUProjectionLayer::OnFrameStart() {
color_swap_chain_->OnFrameStart();
if (depth_stencil_swap_chain_) {
depth_stencil_swap_chain_->OnFrameStart();
}
}
void XRGPUProjectionLayer::OnFrameEnd() {
color_swap_chain_->OnFrameEnd();
if (depth_stencil_swap_chain_) {
depth_stencil_swap_chain_->OnFrameEnd();
}
XRFrameProvider* frame_provider = session()->xr()->frameProvider();
if (viewport_updated_) {
frame_provider->UpdateLayerViewports(this);
viewport_updated_ = false;
}
frame_provider->SubmitWebGPULayer(this,
color_swap_chain_->texture_was_queried());
}
void XRGPUProjectionLayer::OnResize() {}
void XRGPUProjectionLayer::Trace(Visitor* visitor) const {
visitor->Trace(device_);
visitor->Trace(color_swap_chain_);
visitor->Trace(depth_stencil_swap_chain_);
XRProjectionLayer::Trace(visitor);
}
} // namespace blink
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