// Copyright 2026 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_CAMERA_UPDATE_HELPER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_XR_XR_CAMERA_UPDATE_HELPER_H_

#include "gpu/command_buffer/client/client_shared_image.h"
#include "third_party/blink/renderer/modules/webgl/webgl_unowned_texture.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/member.h"

namespace blink {

class WebGLRenderingContextBase;
class WebGLTexture;
class XRSession;

class XRCameraUpdateHelper : public GarbageCollected<XRCameraUpdateHelper> {
 public:
  explicit XRCameraUpdateHelper(XRSession* session,
                                WebGLRenderingContextBase* webgl_context);

  WebGLTexture* GetCameraTexture();
  gpu::SyncToken OnFrameEnd();

  void Trace(Visitor*) const;

 private:
  void MaybeAccessCameraTexture();

  Member<XRSession> session_;
  Member<WebGLRenderingContextBase> webgl_context_;
  std::unique_ptr<gpu::SharedImageTexture> camera_image_shared_image_texture_;
  std::unique_ptr<gpu::SharedImageTexture::ScopedAccess>
      camera_image_texture_scoped_access_;

  bool did_try_to_access_camera_texture_ = false;
  // WebGL texture that points to the |camera_image_texture_|. Must be
  // notified via a call to |WebGLUnownedTexture::OnGLDeleteTextures()| when
  // |camera_image_texture_id_| is deleted.
  Member<WebGLUnownedTexture> camera_image_texture_;
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_XR_XR_CAMERA_UPDATE_HELPER_H_