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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 COMPONENTS_VIZ_SERVICE_DISPLAY_OVERLAY_PROCESSOR_DELEGATED_SUPPORT_H_
#define COMPONENTS_VIZ_SERVICE_DISPLAY_OVERLAY_PROCESSOR_DELEGATED_SUPPORT_H_
#include "base/types/expected.h"
#include "components/viz/common/quads/draw_quad.h"
#include "components/viz/service/display/aggregated_frame.h"
#include "components/viz/service/display/overlay_candidate.h"
#include "ui/gfx/geometry/rect.h"
namespace viz {
class OverlayCandidateFactory;
// These values are persisted to logs. Entries should not be renumbered and
// numeric values should never be reused. For some cases in
// |OverlayCandidate::CandidateStatus| feed into this enum but neither is a
// perfect subset of the other.
enum class DelegationStatus {
kFullDelegation = 0,
kCompositedOther = 1,
kCompositedNotAxisAligned = 2,
kCompositedCheckOverlayFail = 3,
kCompositedNotOverlay = 4,
kCompositedTooManyQuads = 5,
kCompositedBackdropFilter = 6,
kCompositedCopyRequest = 7,
kCompositedHas3dTransform = 8,
kCompositedHas2dShear = 9,
kCompositedHas2dRotation = 10,
kCompositedFeatureDisabled = 11,
kCompositedCandidateFailed = 12,
kCompositedCandidateBlending = 13,
kCompositedCandidateQuadMaterial = 14,
kCompositedCandidateBufferFormat = 15,
kCompositedCandidateNearFilter = 16,
// NOTE: DO NOT USE. kCompositedCandidateNotSharedImage has been deprecated.
kCompositedCandidateNotSharedImage = 17,
kCompositedCandidateMaskFilter = 18,
kCompositedCandidateTransformCantClip = 19,
kCompositedCandidateRpdqWithTransform = 20,
kMaxValue = kCompositedCandidateRpdqWithTransform
};
// Promote a draw quad to a delegated overlay candidate. Also emit debugging
// information and map |CandidateStatus| to |DelegationStatus| in a uniform way
// across platforms.
// Returns the overlay candidate if it is visible or the reason why delegation
// failed.
base::expected<std::optional<OverlayCandidate>, DelegationStatus>
TryPromoteDrawQuadForDelegation(
const OverlayCandidateFactory& candidate_factory,
const DrawQuad* quad);
// Emit logs useful for debugging before delegation, e.g. Visual Debugger logs,
// histograms, trace events, etc.
void DebugLogBeforeDelegation(
const gfx::Rect& incoming_root_damage,
const SurfaceDamageRectList& surface_damage_rect_list);
// Same as |DebugLogBeforeDelegation|, but called after delegation has finished.
void DebugLogAfterDelegation(DelegationStatus status,
const OverlayCandidateList& candidates,
const gfx::Rect& outgoing_root_damage);
// Returns true if delegated compositing should be forcibly disabled, e.g. from
// the Visual Debugger.
bool ForceDisableDelegation();
} // namespace viz
#endif // COMPONENTS_VIZ_SERVICE_DISPLAY_OVERLAY_PROCESSOR_DELEGATED_SUPPORT_H_
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