// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module viz.mojom;

import "services/viz/public/interfaces/compositing/surface_id.mojom";
import "services/viz/public/interfaces/compositing/shared_quad_state.mojom";
import "ui/gfx/geometry/mojo/geometry.mojom";
import "ui/gfx/mojo/color_space.mojom";
import "ui/gfx/mojo/transform.mojom";

struct DebugBorderQuadState {
  // Debug border color.
  uint32 color;

  // Debug border width.
  int32 width;
};

struct RenderPassQuadState {
  uint64 render_pass_id;

  // If nonzero, resource id of mask to use when drawing this pass.
  uint32 mask_resource_id;
  // Render surface's normalized mask texture rect.
  gfx.mojom.RectF mask_uv_rect;
  gfx.mojom.Size mask_texture_size;

  // The scale from layer space of the root layer of the render pass to
  // the render pass physical pixels. This scale is applied to the filter
  // parameters for pixel-moving filters. This scale should include
  // content-to-target-space scale, and device pixel ratio.
  gfx.mojom.Vector2dF filters_scale;

  // The offset from the bounds of the root layer to the origin of the
  // original primitive. This used to correctly position crop rects, lights,
  // etc.
  gfx.mojom.PointF filters_origin;
  // Render surface's non-normalized texture rect.
  gfx.mojom.RectF tex_coord_rect;

  bool force_anti_aliasing_off;
};

struct SolidColorQuadState {
  uint32 color;
  bool force_anti_aliasing_off;
};

struct StreamVideoQuadState {
  uint32 resource_id;
  gfx.mojom.Size resource_size_in_pixels;
  gfx.mojom.Transform matrix;
};

enum SurfaceDrawQuadType {
  PRIMARY,
  FALLBACK,
};

struct SurfaceQuadState {
  SurfaceId surface;
  SurfaceDrawQuadType surface_draw_quad_type;
  uint32 default_background_color;
};

struct TextureQuadState {
  uint32 resource_id;
  gfx.mojom.Size resource_size_in_pixels;
  bool premultiplied_alpha;
  gfx.mojom.PointF uv_top_left;
  gfx.mojom.PointF uv_bottom_right;
  uint32 background_color;
  array<float, 4> vertex_opacity;
  bool y_flipped;
  bool nearest_neighbor;
  bool secure_output_only;
};

struct TileQuadState {
  gfx.mojom.RectF tex_coord_rect;
  gfx.mojom.Size texture_size;
  bool swizzle_contents;
  uint32 resource_id;
  bool nearest_neighbor;
  bool force_anti_aliasing_off;
};

enum YUVColorSpace {
  REC_601,       // SDTV standard with restricted "studio swing" color range.
  REC_709,       // HDTV standard with restricted "studio swing" color range.
  JPEG,          // Full color range [0, 255] JPEG color space.
};

struct YUVVideoQuadState {
  gfx.mojom.RectF ya_tex_coord_rect;
  gfx.mojom.RectF uv_tex_coord_rect;
  gfx.mojom.Size ya_tex_size;
  gfx.mojom.Size uv_tex_size;
  uint32 y_plane_resource_id;
  uint32 u_plane_resource_id;
  uint32 v_plane_resource_id;
  uint32 a_plane_resource_id;
  YUVColorSpace color_space;
  float resource_offset;
  float resource_multiplier;
  uint32 bits_per_channel;
  gfx.mojom.ColorSpace video_color_space;
  bool require_overlay;
};

union DrawQuadState {
  DebugBorderQuadState debug_border_quad_state;
  RenderPassQuadState render_pass_quad_state;
  SolidColorQuadState solid_color_quad_state;
  StreamVideoQuadState stream_video_quad_state;
  SurfaceQuadState surface_quad_state;
  TextureQuadState texture_quad_state;
  TileQuadState tile_quad_state;
  YUVVideoQuadState yuv_video_quad_state;
};

struct DrawQuad {
  // This rect, after applying the quad_transform(), gives the geometry that
  // this quad should draw to. This rect lives in content space.
  gfx.mojom.Rect rect;

  // Allows changing the rect that gets drawn to make it smaller. This value
  // should be clipped to |rect|. This rect lives in content space.
  gfx.mojom.Rect visible_rect;

  // Allows changing the rect that gets drawn to make it smaller. This value
  // should be clipped to |rect|. This rect lives in content space.
  bool needs_blending;

  // Optionally holds a SharedQuadState (transforms etc) shared by multiple
  // quads.
  SharedQuadState? sqs;

  DrawQuadState draw_quad_state;
};