99 lines
3.4 KiB
C#
99 lines
3.4 KiB
C#
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//----------------------------------------------------------------------------------------------------------
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// X-PostProcessing Library
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// https://github.com/QianMo/X-PostProcessing-Library
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// Copyright (C) 2020 QianMo. All rights reserved.
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// Licensed under the MIT License
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// You may not use this file except in compliance with the License.You may obtain a copy of the License at
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// http://opensource.org/licenses/MIT
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//----------------------------------------------------------------------------------------------------------
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using System;
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using UnityEngine;
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using UnityEngine.Rendering;
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using UnityEngine.Rendering.PostProcessing;
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namespace XPostProcessing
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{
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[Serializable]
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[PostProcess(typeof(DirectionalBlurRenderer), PostProcessEvent.AfterStack, "X-PostProcessing/Blur/DirectionalBlur")]
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public class DirectionalBlur : PostProcessEffectSettings
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{
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[Range(0.0f, 5.0f)]
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public FloatParameter BlurRadius = new FloatParameter { value = 1f };
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[Range(1, 30)]
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public IntParameter Iteration = new IntParameter { value = 12 };
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[Range(0.0f, 6.0f)]
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public FloatParameter Angle = new FloatParameter { value = 0.5f };
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[Range(1.0f, 10.0f)]
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public FloatParameter RTDownScaling = new FloatParameter { value = 1.0f };
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}
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public sealed class DirectionalBlurRenderer : PostProcessEffectRenderer<DirectionalBlur>
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{
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private const string PROFILER_TAG = "X-DirectionalBlur";
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private Shader shader;
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public override void Init()
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{
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shader = Shader.Find("Hidden/X-PostProcessing/DirectionalBlur");
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}
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public override void Release()
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{
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base.Release();
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}
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static class ShaderIDs
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{
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internal static readonly int Params = Shader.PropertyToID("_Params");
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internal static readonly int BufferRT = Shader.PropertyToID("_BufferRT");
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}
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public override void Render(PostProcessRenderContext context)
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{
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CommandBuffer cmd = context.command;
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PropertySheet sheet = context.propertySheets.Get(shader);
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cmd.BeginSample(PROFILER_TAG);
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if (settings.RTDownScaling > 1)
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{
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int RTWidth = (int)(context.screenWidth / settings.RTDownScaling);
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int RTHeight = (int)(context.screenHeight / settings.RTDownScaling);
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cmd.GetTemporaryRT(ShaderIDs.BufferRT, RTWidth, RTHeight, 0, FilterMode.Bilinear);
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// downsample screen copy into smaller RT
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context.command.BlitFullscreenTriangle(context.source, ShaderIDs.BufferRT);
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}
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float sinVal = (Mathf.Sin(settings.Angle) * settings.BlurRadius * 0.05f) / settings.Iteration;
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float cosVal = (Mathf.Cos(settings.Angle) * settings.BlurRadius * 0.05f) / settings.Iteration;
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sheet.properties.SetVector(ShaderIDs.Params, new Vector3(settings.Iteration, sinVal, cosVal));
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if (settings.RTDownScaling > 1)
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{
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cmd.BlitFullscreenTriangle(ShaderIDs.BufferRT, context.destination, sheet, 0);
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}
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else
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{
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cmd.BlitFullscreenTriangle(context.source, context.destination, sheet, 0);
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}
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cmd.ReleaseTemporaryRT(ShaderIDs.BufferRT);
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cmd.EndSample(PROFILER_TAG);
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}
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}
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}
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