68 lines
1.9 KiB
C#
68 lines
1.9 KiB
C#
using UnityEngine;
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namespace UltimateWater.Internal
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{
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public sealed class Dx11FFT : GpuFFT
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{
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private readonly ComputeShader _Shader;
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private readonly int _KernelIndex;
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public Dx11FFT(ComputeShader shader, int resolution, bool highPrecision, bool twoChannels)
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: base(resolution, highPrecision, twoChannels, true)
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{
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_Shader = shader;
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_KernelIndex = _NumButterflies - 5 << 1;
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if (twoChannels)
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{
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_KernelIndex += 10;
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}
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}
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public override void SetupMaterials()
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{
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}
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public override void ComputeFFT(Texture tex, RenderTexture target)
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{
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TemporaryRenderTexture temporary = _RenderTexturesSet.GetTemporary();
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if (!target.IsCreated())
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{
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target.enableRandomWrite = true;
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target.Create();
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}
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_Shader.SetTexture(_KernelIndex, "_ButterflyTex", base.Butterfly);
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_Shader.SetTexture(_KernelIndex, "_SourceTex", tex);
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_Shader.SetTexture(_KernelIndex, "_TargetTex", (RenderTexture)temporary);
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_Shader.Dispatch(_KernelIndex, 1, tex.height, 1);
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_Shader.SetTexture(_KernelIndex + 1, "_ButterflyTex", base.Butterfly);
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_Shader.SetTexture(_KernelIndex + 1, "_SourceTex", (RenderTexture)temporary);
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_Shader.SetTexture(_KernelIndex + 1, "_TargetTex", target);
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_Shader.Dispatch(_KernelIndex + 1, 1, tex.height, 1);
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temporary.Dispose();
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}
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protected override void FillButterflyTexture(Texture2D butterfly, int[][] indices, Vector2[][] weights)
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{
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Color color = default(Color);
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for (int i = 0; i < _NumButterflies; i++)
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{
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for (int j = 0; j < 2; j++)
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{
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int num = ((j != 0) ? _Resolution : 0);
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for (int k = 0; k < _Resolution; k++)
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{
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int num2 = _NumButterflies - i - 1;
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int num3 = k << 1;
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color.r = indices[num2][num3] + num;
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color.g = indices[num2][num3 + 1] + num;
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color.b = weights[i][k].x;
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color.a = weights[i][k].y;
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butterfly.SetPixel(num + k, i, color);
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}
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}
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}
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}
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}
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}
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