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75 行
2.4 KiB
75 行
2.4 KiB
using UnityEngine;
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using System.Collections;
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[ExecuteInEditMode]
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[RequireComponent (typeof(Camera))]
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[AddComponentMenu ("Image Effects/Edge Detection/Crease Shading")]
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class CreaseShading : PostEffectsBase {
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public float intensity = 0.5f;
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public int softness = 1;
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public float spread = 1.0f;
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public Shader blurShader = null;
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private Material blurMaterial = null;
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public Shader depthFetchShader = null;
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private Material depthFetchMaterial = null;
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public Shader creaseApplyShader = null;
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private Material creaseApplyMaterial = null;
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public override bool CheckResources (){
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CheckSupport (true);
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blurMaterial = CheckShaderAndCreateMaterial (blurShader, blurMaterial);
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depthFetchMaterial = CheckShaderAndCreateMaterial (depthFetchShader, depthFetchMaterial);
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creaseApplyMaterial = CheckShaderAndCreateMaterial (creaseApplyShader, creaseApplyMaterial);
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if(!isSupported)
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ReportAutoDisable ();
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return isSupported;
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}
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void OnRenderImage ( RenderTexture source , RenderTexture destination ){
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if(CheckResources()==false) {
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Graphics.Blit (source, destination);
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return;
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}
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int rtW = source.width;
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int rtH = source.height;
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float widthOverHeight = (1.0f * rtW) / (1.0f * rtH);
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float oneOverBaseSize = 1.0f / 512.0f;
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RenderTexture hrTex = RenderTexture.GetTemporary (rtW, rtH, 0);
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RenderTexture lrTex1 = RenderTexture.GetTemporary (rtW/2, rtH/2, 0);
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Graphics.Blit (source,hrTex, depthFetchMaterial);
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Graphics.Blit (hrTex, lrTex1);
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for(int i = 0; i < softness; i++) {
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RenderTexture lrTex2 = RenderTexture.GetTemporary (rtW/2, rtH/2, 0);
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blurMaterial.SetVector ("offsets", new Vector4 (0.0f, spread * oneOverBaseSize, 0.0f, 0.0f));
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Graphics.Blit (lrTex1, lrTex2, blurMaterial);
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RenderTexture.ReleaseTemporary (lrTex1);
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lrTex1 = lrTex2;
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lrTex2 = RenderTexture.GetTemporary (rtW/2, rtH/2, 0);
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blurMaterial.SetVector ("offsets", new Vector4 (spread * oneOverBaseSize / widthOverHeight, 0.0f, 0.0f, 0.0f));
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Graphics.Blit (lrTex1, lrTex2, blurMaterial);
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RenderTexture.ReleaseTemporary (lrTex1);
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lrTex1 = lrTex2;
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}
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creaseApplyMaterial.SetTexture ("_HrDepthTex", hrTex);
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creaseApplyMaterial.SetTexture ("_LrDepthTex", lrTex1);
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creaseApplyMaterial.SetFloat ("intensity", intensity);
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Graphics.Blit (source,destination, creaseApplyMaterial);
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RenderTexture.ReleaseTemporary (hrTex);
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RenderTexture.ReleaseTemporary (lrTex1);
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}
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}
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