// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module cc.mojom;

// Describes the reason an EffectNode requires a render surface.
// Maps to cc::RenderSurfaceReason. We are not using 4 byte Mojom enum in CC
// code, because this type is used in a memory sensitive structure.
enum RenderSurfaceReason {
  kNone,
  kRoot,
  k3dTransformFlattening,
  // Defines the scope of the backdrop for child blend mode or backdrop filter.
  kBackdropScope,
  kBlendMode,
  kBlendModeDstIn,
  kOpacity,
  kOpacityAnimation,
  kFilter,
  kFilterAnimation,
  kBackdropFilter,
  kBackdropFilterAnimation,
  kRoundedCorner,
  kClipPath,
  kClipAxisAlignment,
  kMask,
  kTrilinearFiltering,
  kCache,
  kCopyRequest,
  kMirrored,
  kSubtreeIsBeingCaptured,
  kViewTransitionParticipant,
  kGradientMask,
  k2DScaleTransformWithCompositedDescendants,
  // This must be the last value because it's used in tracing code to know the
  // number of reasons.
  kTest,
};