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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 UI_OZONE_PLATFORM_WAYLAND_GPU_WAYLAND_SURFACE_GPU_H_
#define UI_OZONE_PLATFORM_WAYLAND_GPU_WAYLAND_SURFACE_GPU_H_
#include "ui/gfx/gpu_fence_handle.h"
namespace gfx {
enum class SwapResult;
struct PresentationFeedback;
} // namespace gfx
namespace ui {
// This is a common interface for surfaces created in the GPU process. The
// purpose of this is receiving submission and presentation callbacks from the
// WaylandBufferManagerGpu whenever the browser process has completed presenting
// the buffer.
class WaylandSurfaceGpu {
public:
virtual ~WaylandSurfaceGpu() = default;
// Tells the surface the result of the last swap of frame with the |frame_id|.
// After this callback, the previously (before |frame_id|) submitted buffers
// may be reused. This is guaranteed to be called in the same order that
// frames were submitted. If not, there's been a GPU process crash and the
// stale |frame_id| can be ignored.
virtual void OnSubmission(uint32_t frame_id,
const gfx::SwapResult& swap_result,
gfx::GpuFenceHandle release_fence) = 0;
// Tells the surface the result of the last presentation of buffer with the
// |frame_id|. This is guaranteed to be called in the same order that frames
// were submitted, and is guaranteed to be called after the corresponding call
// to |OnSubmission| for this frame.
virtual void OnPresentation(uint32_t frame_id,
const gfx::PresentationFeedback& feedback) = 0;
uint32_t next_frame_id() { return ++frame_id_; }
private:
uint32_t frame_id_ = 0u;
};
} // namespace ui
#endif // UI_OZONE_PLATFORM_WAYLAND_GPU_WAYLAND_SURFACE_GPU_H_
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