43 lines
1.4 KiB
C#
43 lines
1.4 KiB
C#
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using System;
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using UnityEngine.Assertions;
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namespace UnityEngine.Rendering.PostProcessing
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{
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[UnityEngine.Scripting.Preserve]
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[Serializable]
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internal sealed class Dithering
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{
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int m_NoiseTextureIndex = 0;
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System.Random m_Random = new System.Random(1234);
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internal void Render(PostProcessRenderContext context)
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{
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var blueNoise = context.resources.blueNoise64;
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Assert.IsTrue(blueNoise != null && blueNoise.Length > 0);
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#if POSTFX_DEBUG_STATIC_DITHERING // Used by QA for automated testing
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m_NoiseTextureIndex = 0;
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float rndOffsetX = 0f;
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float rndOffsetY = 0f;
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#else
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if (++m_NoiseTextureIndex >= blueNoise.Length)
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m_NoiseTextureIndex = 0;
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float rndOffsetX = (float)m_Random.NextDouble();
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float rndOffsetY = (float)m_Random.NextDouble();
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#endif
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var noiseTex = blueNoise[m_NoiseTextureIndex];
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var uberSheet = context.uberSheet;
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uberSheet.properties.SetTexture(ShaderIDs.DitheringTex, noiseTex);
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uberSheet.properties.SetVector(ShaderIDs.Dithering_Coords, new Vector4(
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(float)context.screenWidth / (float)noiseTex.width,
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(float)context.screenHeight / (float)noiseTex.height,
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rndOffsetX,
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rndOffsetY
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));
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}
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}
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}
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