namespace UnityEngine.PostProcessing
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{
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public sealed class UserLutComponent : PostProcessingComponentRenderTexture<UserLutModel>
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{
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static class Uniforms
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{
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internal static readonly int _UserLut = Shader.PropertyToID("_UserLut");
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internal static readonly int _UserLut_Params = Shader.PropertyToID("_UserLut_Params");
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}
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public override bool active
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{
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get
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{
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var settings = model.settings;
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return model.enabled
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&& settings.lut != null
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&& settings.contribution > 0f
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&& settings.lut.height == (int)Mathf.Sqrt(settings.lut.width)
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&& !context.interrupted;
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}
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}
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public override void Prepare(Material uberMaterial)
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{
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var settings = model.settings;
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uberMaterial.EnableKeyword("USER_LUT");
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uberMaterial.SetTexture(Uniforms._UserLut, settings.lut);
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uberMaterial.SetVector(Uniforms._UserLut_Params, new Vector4(1f / settings.lut.width, 1f / settings.lut.height, settings.lut.height - 1f, settings.contribution));
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}
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public void OnGUI()
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{
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var settings = model.settings;
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var rect = new Rect(context.viewport.x * Screen.width + 8f, 8f, settings.lut.width, settings.lut.height);
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GUI.DrawTexture(rect, settings.lut);
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}
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}
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}
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