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// Copyright 2019 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_RENDER_STATE_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_XR_XR_RENDER_STATE_H_
#include <optional>
#include "third_party/blink/renderer/bindings/core/v8/frozen_array.h"
#include "third_party/blink/renderer/modules/xr/xr_layer.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_vector.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/member.h"
namespace blink {
class HTMLCanvasElement;
class XRWebGLLayer;
class XRLayer;
class XRRenderStateInit;
class XRRenderState : public ScriptWrappable {
DEFINE_WRAPPERTYPEINFO();
public:
explicit XRRenderState(bool immersive);
~XRRenderState() override = default;
// Near and far depths are used when computing projection matrices for the
// Session's views.
double depthNear() const { return depth_near_; }
double depthFar() const { return depth_far_; }
std::optional<double> inlineVerticalFieldOfView() const;
XRWebGLLayer* baseLayer() const { return base_layer_.Get(); }
const FrozenArray<XRLayer>& layers() const { return *layers_.Get(); }
// Returns either baseLayer or layers[0], or nullptr if neither is set.
XRLayer* GetFirstLayer() const;
HTMLCanvasElement* output_canvas() const;
void Update(const XRRenderStateInit* init);
// Only used when removing an outputContext from the session because it was
// bound to a different session.
void removeOutputContext();
void Trace(Visitor*) const override;
private:
bool immersive_;
double depth_near_ = 0.1;
double depth_far_ = 1000.0;
Member<XRWebGLLayer> base_layer_;
Member<FrozenArray<XRLayer>> layers_ =
MakeGarbageCollected<FrozenArray<XRLayer>>();
std::optional<double> inline_vertical_fov_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_XR_XR_RENDER_STATE_H_
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