/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

include "mozilla/GfxMessageUtils.h";

using struct mozilla::gfx::DeviceColor from "mozilla/gfx/2D.h";
using mozilla::gfx::IntPoint from "mozilla/gfx/Point.h";
using mozilla::gfx::IntRect from "mozilla/gfx/Point.h";
using mozilla::gfx::RoundedRect from "mozilla/gfx/Point.h";
using mozilla::gfx::IntSize from "mozilla/gfx/Point.h";
using mozilla::gfx::Matrix4x4 from "mozilla/gfx/Matrix.h";
[MoveOnly] using mozilla::layers::IOSurfacePort from "mozilla/layers/IOSurfacePort.h";

namespace mozilla {
namespace layers {

union NativeLayerCommand {
  CommandCreateLayer;
  CommandCreateLayerForExternalTexture;
  CommandCreateLayerForColor;
  CommandLayerDestroyed;
  CommandSetLayers;
  CommandLayerInfo;
  CommandChangedSurface;
};

struct CommandCreateLayer {
  uint64_t ID;
  IntSize Size;
  bool Opaque;
};

struct CommandCreateLayerForExternalTexture {
  uint64_t ID;
  bool Opaque;
};

struct CommandCreateLayerForColor {
  uint64_t ID;
  DeviceColor Color;
};

struct CommandLayerDestroyed {
  uint64_t ID;
};

struct CommandSetLayers {
  uint64_t[] IDs;
};

struct CommandLayerInfo {
  uint64_t ID;
  IntPoint Position;
  IntRect DisplayRect;
  IntRect? ClipRect;
  RoundedRect? RoundedClipRect;
  Matrix4x4 Transform;
  int8_t SamplingFilter;
  bool SurfaceIsFlipped;
};

struct CommandChangedSurface {
  uint64_t ID;
  IOSurfacePort Surface;
  bool IsDRM;
  bool IsHDR;
  IntSize Size;
};

// This protocol allows a NativeLayerRoot implementation on the GPU
// to send layer commands to the parent process. It also allows the
// GPU to request readback, which the parent will send as a Shmem.
[NeedsOtherPid, ParentProc=Parent, ChildProc=GPU]
sync protocol PNativeLayerRemote
{
parent:
  async CommitNativeLayerCommands(NativeLayerCommand[] commands);
  sync RequestReadback(IntSize size) returns (Shmem pixels);

  // A synchronous no-op message, to make sure that any preceding
  // CommitNativeLayerCommands messages have been processed.
  // Used for synchronous widget-initiated paints, most importantly
  // during window resize or when a new window is opened.
  sync Flush();
};

} // layers
} // mozilla