97 lines
3.7 KiB
C#
97 lines
3.7 KiB
C#
using System;
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using UnityEngine.Serialization;
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namespace UnityEngine.Rendering.PostProcessing
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{
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/// <summary>
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/// This class holds settings for the Chromatic Aberration effect.
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/// </summary>
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[Serializable]
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[PostProcess(typeof(ChromaticAberrationRenderer), "Unity/Chromatic Aberration")]
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public sealed class ChromaticAberration : PostProcessEffectSettings
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{
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/// <summary>
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/// A texture used for custom fringing color (it will use a default one when <c>null</c>).
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/// </summary>
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[Tooltip("Shifts the hue of chromatic aberrations.")]
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public TextureParameter spectralLut = new TextureParameter { value = null };
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/// <summary>
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/// The amount of tangential distortion.
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/// </summary>
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[Range(0f, 1f), Tooltip("Amount of tangential distortion.")]
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public FloatParameter intensity = new FloatParameter { value = 0f };
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/// <summary>
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/// If <c>true</c>, it will use a faster variant of the effect for improved performances.
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/// </summary>
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[FormerlySerializedAs("mobileOptimized")]
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[Tooltip("Boost performances by lowering the effect quality. This settings is meant to be used on mobile and other low-end platforms but can also provide a nice performance boost on desktops and consoles.")]
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public BoolParameter fastMode = new BoolParameter { value = false };
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/// <summary>
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/// Returns <c>true</c> if the effect is currently enabled and supported.
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/// </summary>
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/// <param name="context">The current post-processing render context</param>
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/// <returns><c>true</c> if the effect is currently enabled and supported</returns>
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public override bool IsEnabledAndSupported(PostProcessRenderContext context)
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{
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return enabled.value
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&& intensity.value > 0f;
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}
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}
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[UnityEngine.Scripting.Preserve]
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internal sealed class ChromaticAberrationRenderer : PostProcessEffectRenderer<ChromaticAberration>
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{
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Texture2D m_InternalSpectralLut;
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public override void Render(PostProcessRenderContext context)
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{
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var spectralLut = settings.spectralLut.value;
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if (spectralLut == null)
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{
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if (m_InternalSpectralLut == null)
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{
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m_InternalSpectralLut = new Texture2D(3, 1, TextureFormat.RGB24, false)
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{
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name = "Chromatic Aberration Spectrum Lookup",
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filterMode = FilterMode.Bilinear,
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wrapMode = TextureWrapMode.Clamp,
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anisoLevel = 0,
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hideFlags = HideFlags.DontSave
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};
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m_InternalSpectralLut.SetPixels(new[]
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{
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new Color(1f, 0f, 0f),
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new Color(0f, 1f, 0f),
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new Color(0f, 0f, 1f)
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});
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m_InternalSpectralLut.Apply();
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}
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spectralLut = m_InternalSpectralLut;
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}
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var sheet = context.uberSheet;
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bool fastMode = settings.fastMode || SystemInfo.graphicsDeviceType == GraphicsDeviceType.OpenGLES2;
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sheet.EnableKeyword(fastMode
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? "CHROMATIC_ABERRATION_LOW"
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: "CHROMATIC_ABERRATION"
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);
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sheet.properties.SetFloat(ShaderIDs.ChromaticAberration_Amount, settings.intensity * 0.05f);
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sheet.properties.SetTexture(ShaderIDs.ChromaticAberration_SpectralLut, spectralLut);
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}
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public override void Release()
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{
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RuntimeUtilities.Destroy(m_InternalSpectralLut);
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m_InternalSpectralLut = null;
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}
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}
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}
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