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417 行
17 KiB
417 行
17 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/Camera/Depth of Field (deprecated)") ]
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public class DepthOfFieldDeprecated : PostEffectsBase {
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public enum Dof34QualitySetting {
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OnlyBackground = 1,
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BackgroundAndForeground = 2,
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}
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public enum DofResolution {
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High = 2,
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Medium = 3,
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Low = 4,
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}
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public enum DofBlurriness {
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Low = 1,
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High = 2,
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VeryHigh = 4,
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}
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public enum BokehDestination {
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Background = 0x1,
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Foreground = 0x2,
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BackgroundAndForeground = 0x3,
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}
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static private int SMOOTH_DOWNSAMPLE_PASS = 6;
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static private float BOKEH_EXTRA_BLUR = 2.0f;
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public Dof34QualitySetting quality = Dof34QualitySetting.OnlyBackground;
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public DofResolution resolution = DofResolution.Low;
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public bool simpleTweakMode = true;
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public float focalPoint = 1.0f;
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public float smoothness = 0.5f;
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public float focalZDistance = 0.0f;
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public float focalZStartCurve = 1.0f;
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public float focalZEndCurve = 1.0f;
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private float focalStartCurve = 2.0f;
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private float focalEndCurve = 2.0f;
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private float focalDistance01 = 0.1f;
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public Transform objectFocus = null;
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public float focalSize = 0.0f;
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public DofBlurriness bluriness = DofBlurriness.High;
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public float maxBlurSpread = 1.75f;
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public float foregroundBlurExtrude = 1.15f;
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public Shader dofBlurShader;
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private Material dofBlurMaterial = null;
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public Shader dofShader;
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private Material dofMaterial = null;
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public bool visualize = false;
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public BokehDestination bokehDestination = BokehDestination.Background;
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private float widthOverHeight = 1.25f;
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private float oneOverBaseSize = 1.0f / 512.0f;
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public bool bokeh = false;
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public bool bokehSupport = true;
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public Shader bokehShader;
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public Texture2D bokehTexture;
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public float bokehScale = 2.4f;
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public float bokehIntensity = 0.15f;
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public float bokehThreshholdContrast = 0.1f;
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public float bokehThreshholdLuminance = 0.55f;
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public int bokehDownsample = 1;
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private Material bokehMaterial;
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void CreateMaterials (){
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dofBlurMaterial = CheckShaderAndCreateMaterial (dofBlurShader, dofBlurMaterial);
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dofMaterial = CheckShaderAndCreateMaterial (dofShader,dofMaterial);
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bokehSupport = bokehShader.isSupported;
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if(bokeh && bokehSupport && bokehShader)
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bokehMaterial = CheckShaderAndCreateMaterial (bokehShader, bokehMaterial);
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}
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public override bool CheckResources (){
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CheckSupport (true);
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dofBlurMaterial = CheckShaderAndCreateMaterial (dofBlurShader, dofBlurMaterial);
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dofMaterial = CheckShaderAndCreateMaterial (dofShader,dofMaterial);
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bokehSupport = bokehShader.isSupported;
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if(bokeh && bokehSupport && bokehShader)
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bokehMaterial = CheckShaderAndCreateMaterial (bokehShader, bokehMaterial);
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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 OnDisable (){
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Quads.Cleanup ();
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}
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void OnEnable (){
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GetComponent<Camera>().depthTextureMode |= DepthTextureMode.Depth;
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}
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float FocalDistance01 ( float worldDist ){
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return GetComponent<Camera>().WorldToViewportPoint((worldDist-GetComponent<Camera>().nearClipPlane) * GetComponent<Camera>().transform.forward + GetComponent<Camera>().transform.position).z / (GetComponent<Camera>().farClipPlane-GetComponent<Camera>().nearClipPlane);
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}
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int GetDividerBasedOnQuality (){
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int divider = 1;
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if (resolution == DofResolution.Medium)
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divider = 2;
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else if (resolution == DofResolution.Low)
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divider = 2;
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return divider;
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}
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int GetLowResolutionDividerBasedOnQuality ( int baseDivider ){
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int lowTexDivider = baseDivider;
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if (resolution == DofResolution.High)
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lowTexDivider *= 2;
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if (resolution == DofResolution.Low)
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lowTexDivider *= 2;
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return lowTexDivider;
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}
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private RenderTexture foregroundTexture = null;
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private RenderTexture mediumRezWorkTexture = null;
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private RenderTexture finalDefocus = null;
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private RenderTexture lowRezWorkTexture = null;
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private RenderTexture bokehSource = null;
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private RenderTexture bokehSource2 = null;
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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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if (smoothness < 0.1f)
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smoothness = 0.1f;
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// update needed focal & rt size parameter
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bokeh = bokeh && bokehSupport;
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float bokehBlurAmplifier = bokeh ? BOKEH_EXTRA_BLUR : 1.0f;
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bool blurForeground = quality > Dof34QualitySetting.OnlyBackground;
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float focal01Size = focalSize / (GetComponent<Camera>().farClipPlane - GetComponent<Camera>().nearClipPlane);;
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if (simpleTweakMode) {
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focalDistance01 = objectFocus ? (GetComponent<Camera>().WorldToViewportPoint (objectFocus.position)).z / (GetComponent<Camera>().farClipPlane) : FocalDistance01 (focalPoint);
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focalStartCurve = focalDistance01 * smoothness;
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focalEndCurve = focalStartCurve;
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blurForeground = blurForeground && (focalPoint > (GetComponent<Camera>().nearClipPlane + Mathf.Epsilon));
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}
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else {
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if(objectFocus) {
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var vpPoint= GetComponent<Camera>().WorldToViewportPoint (objectFocus.position);
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vpPoint.z = (vpPoint.z) / (GetComponent<Camera>().farClipPlane);
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focalDistance01 = vpPoint.z;
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}
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else
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focalDistance01 = FocalDistance01 (focalZDistance);
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focalStartCurve = focalZStartCurve;
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focalEndCurve = focalZEndCurve;
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blurForeground = blurForeground && (focalPoint > (GetComponent<Camera>().nearClipPlane + Mathf.Epsilon));
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}
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widthOverHeight = (1.0f * source.width) / (1.0f * source.height);
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oneOverBaseSize = 1.0f / 512.0f;
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dofMaterial.SetFloat ("_ForegroundBlurExtrude", foregroundBlurExtrude);
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dofMaterial.SetVector ("_CurveParams", new Vector4 (simpleTweakMode ? 1.0f / focalStartCurve : focalStartCurve, simpleTweakMode ? 1.0f / focalEndCurve : focalEndCurve, focal01Size * 0.5f, focalDistance01));
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dofMaterial.SetVector ("_InvRenderTargetSize", new Vector4 (1.0f / (1.0f * source.width), 1.0f / (1.0f * source.height),0.0f,0.0f));
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int divider = GetDividerBasedOnQuality ();
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int lowTexDivider = GetLowResolutionDividerBasedOnQuality (divider);
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AllocateTextures (blurForeground, source, divider, lowTexDivider);
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// WRITE COC to alpha channel
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// source is only being bound to detect y texcoord flip
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Graphics.Blit (source, source, dofMaterial, 3);
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// better DOWNSAMPLE (could actually be weighted for higher quality)
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Downsample (source, mediumRezWorkTexture);
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// BLUR A LITTLE first, which has two purposes
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// 1.) reduce jitter, noise, aliasing
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// 2.) produce the little-blur buffer used in composition later
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Blur (mediumRezWorkTexture, mediumRezWorkTexture, DofBlurriness.Low, 4, maxBlurSpread);
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if ((bokeh) && ((BokehDestination.Foreground & bokehDestination) != 0))
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{
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dofMaterial.SetVector ("_Threshhold", new Vector4(bokehThreshholdContrast, bokehThreshholdLuminance, 0.95f, 0.0f));
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// add and mark the parts that should end up as bokeh shapes
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Graphics.Blit (mediumRezWorkTexture, bokehSource2, dofMaterial, 11);
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// remove those parts (maybe even a little tittle bittle more) from the regurlarly blurred buffer
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//Graphics.Blit (mediumRezWorkTexture, lowRezWorkTexture, dofMaterial, 10);
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Graphics.Blit (mediumRezWorkTexture, lowRezWorkTexture);//, dofMaterial, 10);
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// maybe you want to reblur the small blur ... but not really needed.
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//Blur (mediumRezWorkTexture, mediumRezWorkTexture, DofBlurriness.Low, 4, maxBlurSpread);
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// bigger BLUR
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Blur (lowRezWorkTexture, lowRezWorkTexture, bluriness, 0, maxBlurSpread * bokehBlurAmplifier);
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}
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else {
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// bigger BLUR
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Downsample (mediumRezWorkTexture, lowRezWorkTexture);
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Blur (lowRezWorkTexture, lowRezWorkTexture, bluriness, 0, maxBlurSpread);
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}
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dofBlurMaterial.SetTexture ("_TapLow", lowRezWorkTexture);
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dofBlurMaterial.SetTexture ("_TapMedium", mediumRezWorkTexture);
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Graphics.Blit (null, finalDefocus, dofBlurMaterial, 3);
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// we are only adding bokeh now if the background is the only part we have to deal with
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if ((bokeh) && ((BokehDestination.Foreground & bokehDestination) != 0))
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AddBokeh (bokehSource2, bokehSource, finalDefocus);
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dofMaterial.SetTexture ("_TapLowBackground", finalDefocus);
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dofMaterial.SetTexture ("_TapMedium", mediumRezWorkTexture); // needed for debugging/visualization
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// FINAL DEFOCUS (background)
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Graphics.Blit (source, blurForeground ? foregroundTexture : destination, dofMaterial, visualize ? 2 : 0);
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// FINAL DEFOCUS (foreground)
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if (blurForeground) {
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// WRITE COC to alpha channel
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Graphics.Blit (foregroundTexture, source, dofMaterial, 5);
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// DOWNSAMPLE (unweighted)
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Downsample (source, mediumRezWorkTexture);
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// BLUR A LITTLE first, which has two purposes
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// 1.) reduce jitter, noise, aliasing
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// 2.) produce the little-blur buffer used in composition later
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BlurFg (mediumRezWorkTexture, mediumRezWorkTexture, DofBlurriness.Low, 2, maxBlurSpread);
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if ((bokeh) && ((BokehDestination.Foreground & bokehDestination) != 0))
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{
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dofMaterial.SetVector ("_Threshhold", new Vector4(bokehThreshholdContrast * 0.5f, bokehThreshholdLuminance, 0.0f, 0.0f));
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// add and mark the parts that should end up as bokeh shapes
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Graphics.Blit (mediumRezWorkTexture, bokehSource2, dofMaterial, 11);
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// remove the parts (maybe even a little tittle bittle more) that will end up in bokeh space
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//Graphics.Blit (mediumRezWorkTexture, lowRezWorkTexture, dofMaterial, 10);
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Graphics.Blit (mediumRezWorkTexture, lowRezWorkTexture);//, dofMaterial, 10);
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// big BLUR
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BlurFg (lowRezWorkTexture, lowRezWorkTexture, bluriness, 1, maxBlurSpread * bokehBlurAmplifier);
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}
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else {
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// big BLUR
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BlurFg (mediumRezWorkTexture, lowRezWorkTexture, bluriness, 1, maxBlurSpread);
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}
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// simple upsample once
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Graphics.Blit (lowRezWorkTexture, finalDefocus);
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dofMaterial.SetTexture ("_TapLowForeground", finalDefocus);
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Graphics.Blit (source, destination, dofMaterial, visualize ? 1 : 4);
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if ((bokeh) && ((BokehDestination.Foreground & bokehDestination) != 0))
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AddBokeh (bokehSource2, bokehSource, destination);
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}
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ReleaseTextures ();
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}
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void Blur ( RenderTexture from , RenderTexture to , DofBlurriness iterations , int blurPass , float spread ){
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RenderTexture tmp = RenderTexture.GetTemporary (to.width, to.height);
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if ((int)iterations > 1) {
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BlurHex (from, to, blurPass, spread, tmp);
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if ((int)iterations > 2) {
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dofBlurMaterial.SetVector ("offsets", new Vector4 (0.0f, spread * oneOverBaseSize, 0.0f, 0.0f));
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Graphics.Blit (to, tmp, dofBlurMaterial, blurPass);
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dofBlurMaterial.SetVector ("offsets", new Vector4 (spread / widthOverHeight * oneOverBaseSize, 0.0f, 0.0f, 0.0f));
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Graphics.Blit (tmp, to, dofBlurMaterial, blurPass);
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}
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}
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else {
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dofBlurMaterial.SetVector ("offsets", new Vector4 (0.0f, spread * oneOverBaseSize, 0.0f, 0.0f));
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Graphics.Blit (from, tmp, dofBlurMaterial, blurPass);
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dofBlurMaterial.SetVector ("offsets", new Vector4 (spread / widthOverHeight * oneOverBaseSize, 0.0f, 0.0f, 0.0f));
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Graphics.Blit (tmp, to, dofBlurMaterial, blurPass);
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}
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RenderTexture.ReleaseTemporary (tmp);
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}
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void BlurFg ( RenderTexture from , RenderTexture to , DofBlurriness iterations , int blurPass , float spread ){
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// we want a nice, big coc, hence we need to tap once from this (higher resolution) texture
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dofBlurMaterial.SetTexture ("_TapHigh", from);
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RenderTexture tmp = RenderTexture.GetTemporary (to.width, to.height);
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if ((int)iterations > 1) {
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BlurHex (from, to, blurPass, spread, tmp);
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if ((int)iterations > 2) {
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dofBlurMaterial.SetVector ("offsets", new Vector4 (0.0f, spread * oneOverBaseSize, 0.0f, 0.0f));
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Graphics.Blit (to, tmp, dofBlurMaterial, blurPass);
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dofBlurMaterial.SetVector ("offsets", new Vector4 (spread / widthOverHeight * oneOverBaseSize, 0.0f, 0.0f, 0.0f));
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Graphics.Blit (tmp, to, dofBlurMaterial, blurPass);
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}
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}
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else {
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dofBlurMaterial.SetVector ("offsets", new Vector4 (0.0f, spread * oneOverBaseSize, 0.0f, 0.0f));
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Graphics.Blit (from, tmp, dofBlurMaterial, blurPass);
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dofBlurMaterial.SetVector ("offsets", new Vector4 (spread / widthOverHeight * oneOverBaseSize, 0.0f, 0.0f, 0.0f));
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Graphics.Blit (tmp, to, dofBlurMaterial, blurPass);
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}
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RenderTexture.ReleaseTemporary (tmp);
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}
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void BlurHex ( RenderTexture from , RenderTexture to , int blurPass , float spread , RenderTexture tmp ){
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dofBlurMaterial.SetVector ("offsets", new Vector4 (0.0f, spread * oneOverBaseSize, 0.0f, 0.0f));
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Graphics.Blit (from, tmp, dofBlurMaterial, blurPass);
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dofBlurMaterial.SetVector ("offsets", new Vector4 (spread / widthOverHeight * oneOverBaseSize, 0.0f, 0.0f, 0.0f));
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Graphics.Blit (tmp, to, dofBlurMaterial, blurPass);
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dofBlurMaterial.SetVector ("offsets", new Vector4 (spread / widthOverHeight * oneOverBaseSize, spread * oneOverBaseSize, 0.0f, 0.0f));
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Graphics.Blit (to, tmp, dofBlurMaterial, blurPass);
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dofBlurMaterial.SetVector ("offsets", new Vector4 (spread / widthOverHeight * oneOverBaseSize, -spread * oneOverBaseSize, 0.0f, 0.0f));
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Graphics.Blit (tmp, to, dofBlurMaterial, blurPass);
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}
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void Downsample ( RenderTexture from , RenderTexture to ){
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dofMaterial.SetVector ("_InvRenderTargetSize", new Vector4 (1.0f / (1.0f * to.width), 1.0f / (1.0f * to.height), 0.0f, 0.0f));
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Graphics.Blit (from, to, dofMaterial, SMOOTH_DOWNSAMPLE_PASS);
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}
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void AddBokeh ( RenderTexture bokehInfo , RenderTexture tempTex , RenderTexture finalTarget ){
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if (bokehMaterial) {
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Mesh[] meshes = Quads.GetMeshes (tempTex.width, tempTex.height); // quads: exchanging more triangles with less overdraw
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RenderTexture.active = tempTex;
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GL.Clear (false, true, new Color (0.0f, 0.0f, 0.0f, 0.0f));
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GL.PushMatrix ();
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GL.LoadIdentity ();
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// point filter mode is important, otherwise we get bokeh shape & size artefacts
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bokehInfo.filterMode = FilterMode.Point;
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float arW = (bokehInfo.width * 1.0f) / (bokehInfo.height * 1.0f);
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float sc = 2.0f / (1.0f * bokehInfo.width);
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sc += bokehScale * maxBlurSpread * BOKEH_EXTRA_BLUR * oneOverBaseSize;
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bokehMaterial.SetTexture ("_Source", bokehInfo);
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bokehMaterial.SetTexture ("_MainTex", bokehTexture);
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bokehMaterial.SetVector ("_ArScale",new Vector4 (sc, sc * arW, 0.5f, 0.5f * arW));
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bokehMaterial.SetFloat ("_Intensity", bokehIntensity);
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bokehMaterial.SetPass (0);
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foreach(Mesh m in meshes)
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if (m) Graphics.DrawMeshNow (m, Matrix4x4.identity);
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GL.PopMatrix ();
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Graphics.Blit (tempTex, finalTarget, dofMaterial, 8);
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// important to set back as we sample from this later on
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bokehInfo.filterMode = FilterMode.Bilinear;
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}
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}
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void ReleaseTextures (){
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if (foregroundTexture) RenderTexture.ReleaseTemporary (foregroundTexture);
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if (finalDefocus) RenderTexture.ReleaseTemporary (finalDefocus);
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if (mediumRezWorkTexture) RenderTexture.ReleaseTemporary (mediumRezWorkTexture);
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if (lowRezWorkTexture) RenderTexture.ReleaseTemporary (lowRezWorkTexture);
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if (bokehSource) RenderTexture.ReleaseTemporary (bokehSource);
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if (bokehSource2) RenderTexture.ReleaseTemporary (bokehSource2);
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}
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void AllocateTextures ( bool blurForeground , RenderTexture source , int divider , int lowTexDivider ){
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foregroundTexture = null;
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if (blurForeground)
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foregroundTexture = RenderTexture.GetTemporary (source.width, source.height, 0);
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mediumRezWorkTexture = RenderTexture.GetTemporary (source.width / divider, source.height / divider, 0);
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finalDefocus = RenderTexture.GetTemporary (source.width / divider, source.height / divider, 0);
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lowRezWorkTexture = RenderTexture.GetTemporary (source.width / lowTexDivider, source.height / lowTexDivider, 0);
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bokehSource = null;
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bokehSource2 = null;
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if (bokeh) {
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bokehSource = RenderTexture.GetTemporary (source.width / (lowTexDivider * bokehDownsample), source.height / (lowTexDivider * bokehDownsample), 0, RenderTextureFormat.ARGBHalf);
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bokehSource2 = RenderTexture.GetTemporary (source.width / (lowTexDivider * bokehDownsample), source.height / (lowTexDivider * bokehDownsample), 0, RenderTextureFormat.ARGBHalf);
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bokehSource.filterMode = FilterMode.Bilinear;
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bokehSource2.filterMode = FilterMode.Bilinear;
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RenderTexture.active = bokehSource2;
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GL.Clear (false, true, new Color(0.0f, 0.0f, 0.0f, 0.0f));
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}
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// to make sure: always use bilinear filter setting
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source.filterMode = FilterMode.Bilinear;
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finalDefocus.filterMode = FilterMode.Bilinear;
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mediumRezWorkTexture.filterMode = FilterMode.Bilinear;
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lowRezWorkTexture.filterMode = FilterMode.Bilinear;
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if (foregroundTexture)
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foregroundTexture.filterMode = FilterMode.Bilinear;
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}
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}
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