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// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
library fuchsia.ui.gfx;
/// These are all of the types of parameters that can be set to configure a
/// `Renderer`.
union RendererParam {
1: ShadowTechnique shadow_technique;
2: RenderFrequency render_frequency;
3: bool enable_debugging;
};
/// Represents the shadow algorithm that the `Renderer` should use when lighting
/// the scene.
enum ShadowTechnique {
/// No shadows.
UNSHADOWED = 0;
/// Default. Screen-space, depth-buffer based shadows; SSDO-ish.
SCREEN_SPACE = 1;
/// Basic shadow map.
SHADOW_MAP = 2;
/// Moment shadow map (see http:///momentsingraphics.de).
MOMENT_SHADOW_MAP = 3;
/// Stencil shadow volume.
STENCIL_SHADOW_VOLUME = 4;
};
enum RenderFrequency {
/// Render only on when requested (i.e. when something triggers it).
/// Default behavior.
WHEN_REQUESTED = 0;
/// Render one frame after another regardless of it it's needed.
CONTINUOUSLY = 1;
};