71 lines
2.6 KiB
C#
71 lines
2.6 KiB
C#
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using System;
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using System.Runtime.InteropServices;
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#if UNITY_EDITOR
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using UnityEditor;
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#endif
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namespace UnityEngine.Rendering.Sampling
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{
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internal sealed class SamplingResources : IDisposable
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{
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internal enum ResourceType
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{
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BlueNoiseTextures = 1,
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SobolMatrices = 2,
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All = BlueNoiseTextures | SobolMatrices
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};
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private Texture2D m_SobolScramblingTile;
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private Texture2D m_SobolRankingTile;
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private Texture2D m_SobolOwenScrambled256Samples;
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private GraphicsBuffer m_SobolBuffer;
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static public readonly uint[] sobolMatrices = SobolData.SobolMatrices;
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#if UNITY_EDITOR
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public void Load(uint resourceBitmask = (uint)ResourceType.BlueNoiseTextures)
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{
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if ((resourceBitmask & (uint)ResourceType.BlueNoiseTextures) != 0)
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{
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const string path = "Packages/com.unity.rendering.light-transport/Runtime/";
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m_SobolScramblingTile = AssetDatabase.LoadAssetAtPath<Texture2D>(path + "Sampling/Textures/SobolBlueNoise/ScramblingTile256SPP.png");
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m_SobolRankingTile = AssetDatabase.LoadAssetAtPath<Texture2D>(path + "Sampling/Textures/SobolBlueNoise/RankingTile256SPP.png");
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m_SobolOwenScrambled256Samples = AssetDatabase.LoadAssetAtPath<Texture2D>(path + "Sampling/Textures/SobolBlueNoise/SobolOwenScrambled256.png");
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}
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if ((resourceBitmask & (uint)ResourceType.SobolMatrices) != 0)
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{
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int sobolBufferSize = (int)(SobolData.SobolDims * SobolData.SobolSize);
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m_SobolBuffer = new GraphicsBuffer(GraphicsBuffer.Target.Structured, sobolBufferSize, Marshal.SizeOf<uint>());
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m_SobolBuffer.SetData(SobolData.SobolMatrices);
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}
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}
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#endif
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public static void BindSobolBlueNoiseTextures(CommandBuffer cmd, SamplingResources resources)
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{
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if (resources.m_SobolScramblingTile != null)
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{
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cmd.SetGlobalTexture(Shader.PropertyToID("_SobolScramblingTile"), resources.m_SobolScramblingTile);
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cmd.SetGlobalTexture(Shader.PropertyToID("_SobolRankingTile"), resources.m_SobolRankingTile);
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cmd.SetGlobalTexture(Shader.PropertyToID("_SobolOwenScrambledSequence"), resources.m_SobolOwenScrambled256Samples);
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}
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if (resources.m_SobolBuffer != null)
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cmd.SetGlobalBuffer("_SobolMatricesBuffer", resources.m_SobolBuffer);
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}
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public void Dispose()
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{
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m_SobolBuffer?.Dispose();
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}
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}
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}
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