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276 lines
12 KiB
JavaScript
276 lines
12 KiB
JavaScript
1 month ago
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#pragma strict
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@script ExecuteInEditMode
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@script RequireComponent (Camera)
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@script AddComponentMenu ("Image Effects/Bloom (HDR, Lens Flares)")
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enum LensflareStyle34 {
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Ghosting = 0,
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Anamorphic = 1,
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Combined = 2,
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}
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enum TweakMode34 {
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Basic = 0,
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Complex = 1,
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}
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enum HDRBloomMode {
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Auto = 0,
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On = 1,
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Off = 2,
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}
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enum BloomScreenBlendMode {
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Screen = 0,
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Add = 1,
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}
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class BloomAndLensFlares extends PostEffectsBase {
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public var tweakMode : TweakMode34 = 0;
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public var screenBlendMode : BloomScreenBlendMode = BloomScreenBlendMode.Add;
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public var hdr : HDRBloomMode = HDRBloomMode.Auto;
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private var doHdr : boolean = false;
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public var sepBlurSpread : float = 1.5f;
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public var useSrcAlphaAsMask : float = 0.5f;
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public var bloomIntensity : float = 1.0f;
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public var bloomThreshhold : float = 0.5f;
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public var bloomBlurIterations : int = 2;
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public var lensflares : boolean = false;
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public var hollywoodFlareBlurIterations : int = 2;
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public var lensflareMode : LensflareStyle34 = 1;
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public var hollyStretchWidth : float = 3.5f;
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public var lensflareIntensity : float = 1.0f;
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public var lensflareThreshhold : float = 0.3f;
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public var flareColorA : Color = Color (0.4f, 0.4f, 0.8f, 0.75f);
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public var flareColorB : Color = Color (0.4f, 0.8f, 0.8f, 0.75f);
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public var flareColorC : Color = Color (0.8f, 0.4f, 0.8f, 0.75f);
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public var flareColorD : Color = Color (0.8f, 0.4f, 0.0f, 0.75f);
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public var blurWidth : float = 1.0f;
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public var lensFlareVignetteMask : Texture2D;
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public var lensFlareShader : Shader;
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private var lensFlareMaterial : Material;
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public var vignetteShader : Shader;
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private var vignetteMaterial : Material;
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public var separableBlurShader : Shader;
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private var separableBlurMaterial : Material;
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public var addBrightStuffOneOneShader: Shader;
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private var addBrightStuffBlendOneOneMaterial : Material;
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public var screenBlendShader : Shader;
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private var screenBlend : Material;
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public var hollywoodFlaresShader: Shader;
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private var hollywoodFlaresMaterial : Material;
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public var brightPassFilterShader : Shader;
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private var brightPassFilterMaterial : Material;
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function OnDisable()
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{
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if (screenBlend)
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DestroyImmediate(screenBlend);
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if (lensFlareMaterial)
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DestroyImmediate(lensFlareMaterial);
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if (vignetteMaterial)
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DestroyImmediate(vignetteMaterial);
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if (separableBlurMaterial)
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DestroyImmediate(separableBlurMaterial);
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if (addBrightStuffBlendOneOneMaterial)
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DestroyImmediate(addBrightStuffBlendOneOneMaterial);
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if (hollywoodFlaresMaterial)
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DestroyImmediate(hollywoodFlaresMaterial);
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if (brightPassFilterMaterial)
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DestroyImmediate(brightPassFilterMaterial);
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}
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function CheckResources () : boolean {
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CheckSupport (false);
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screenBlend = CheckShaderAndCreateMaterial (screenBlendShader, screenBlend);
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lensFlareMaterial = CheckShaderAndCreateMaterial(lensFlareShader,lensFlareMaterial);
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vignetteMaterial = CheckShaderAndCreateMaterial(vignetteShader,vignetteMaterial);
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separableBlurMaterial = CheckShaderAndCreateMaterial(separableBlurShader,separableBlurMaterial);
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addBrightStuffBlendOneOneMaterial = CheckShaderAndCreateMaterial(addBrightStuffOneOneShader,addBrightStuffBlendOneOneMaterial);
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hollywoodFlaresMaterial = CheckShaderAndCreateMaterial (hollywoodFlaresShader, hollywoodFlaresMaterial);
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brightPassFilterMaterial = CheckShaderAndCreateMaterial(brightPassFilterShader, brightPassFilterMaterial);
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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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function OnRenderImage (source : RenderTexture, destination : RenderTexture) {
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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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// screen blend is not supported when HDR is enabled (will cap values)
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doHdr = false;
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if(hdr == HDRBloomMode.Auto)
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doHdr = source.format == RenderTextureFormat.ARGBHalf && camera.hdr;
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else {
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doHdr = hdr == HDRBloomMode.On;
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}
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doHdr = doHdr && supportHDRTextures;
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var realBlendMode : BloomScreenBlendMode = screenBlendMode;
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if(doHdr)
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realBlendMode = BloomScreenBlendMode.Add;
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var rtFormat = (doHdr) ? RenderTextureFormat.ARGBHalf : RenderTextureFormat.Default;
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var halfRezColor : RenderTexture = RenderTexture.GetTemporary (source.width / 2, source.height / 2, 0, rtFormat);
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var quarterRezColor : RenderTexture = RenderTexture.GetTemporary (source.width / 4, source.height / 4, 0, rtFormat);
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var secondQuarterRezColor : RenderTexture = RenderTexture.GetTemporary (source.width / 4, source.height / 4, 0, rtFormat);
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var thirdQuarterRezColor : RenderTexture = RenderTexture.GetTemporary (source.width / 4, source.height / 4, 0, rtFormat);
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var widthOverHeight : float = (1.0f * source.width) / (1.0f * source.height);
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var oneOverBaseSize : float = 1.0f / 512.0f;
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// downsample
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Graphics.Blit (source, halfRezColor, screenBlend, 2); // <- 2 is stable downsample
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Graphics.Blit (halfRezColor, quarterRezColor, screenBlend, 2); // <- 2 is stable downsample
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RenderTexture.ReleaseTemporary (halfRezColor);
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// cut colors (threshholding)
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BrightFilter (bloomThreshhold, useSrcAlphaAsMask, quarterRezColor, secondQuarterRezColor);
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// blurring
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if (bloomBlurIterations < 1) bloomBlurIterations = 1;
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for (var iter : int = 0; iter < bloomBlurIterations; iter++ ) {
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var spreadForPass : float = (1.0f + (iter * 0.5f)) * sepBlurSpread;
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separableBlurMaterial.SetVector ("offsets", Vector4 (0.0f, spreadForPass * oneOverBaseSize, 0.0f, 0.0f));
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Graphics.Blit (iter == 0 ? secondQuarterRezColor : quarterRezColor, thirdQuarterRezColor, separableBlurMaterial);
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separableBlurMaterial.SetVector ("offsets", Vector4 ((spreadForPass / widthOverHeight) * oneOverBaseSize, 0.0f, 0.0f, 0.0f));
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Graphics.Blit (thirdQuarterRezColor, quarterRezColor, separableBlurMaterial);
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}
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// lens flares: ghosting, anamorphic or a combination
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if (lensflares) {
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if (lensflareMode == 0) {
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BrightFilter (lensflareThreshhold, 0.0f, quarterRezColor, thirdQuarterRezColor);
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// smooth a little, this needs to be resolution dependent
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/*
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separableBlurMaterial.SetVector ("offsets", Vector4 (0.0f, (2.0f) / (1.0f * quarterRezColor.height), 0.0f, 0.0f));
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Graphics.Blit (thirdQuarterRezColor, secondQuarterRezColor, separableBlurMaterial);
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separableBlurMaterial.SetVector ("offsets", Vector4 ((2.0f) / (1.0f * quarterRezColor.width), 0.0f, 0.0f, 0.0f));
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Graphics.Blit (secondQuarterRezColor, thirdQuarterRezColor, separableBlurMaterial);
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*/
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// no ugly edges!
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Vignette (0.975, thirdQuarterRezColor, secondQuarterRezColor);
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BlendFlares (secondQuarterRezColor, quarterRezColor);
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}
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// (b) hollywood/anamorphic flares?
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else {
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// thirdQuarter has the brightcut unblurred colors
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// quarterRezColor is the blurred, brightcut buffer that will end up as bloom
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hollywoodFlaresMaterial.SetVector ("_Threshhold", Vector4 (lensflareThreshhold, 1.0f / (1.0f - lensflareThreshhold), 0.0f, 0.0f));
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hollywoodFlaresMaterial.SetVector ("tintColor", Vector4 (flareColorA.r, flareColorA.g, flareColorA.b, flareColorA.a) * flareColorA.a * lensflareIntensity);
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Graphics.Blit (thirdQuarterRezColor, secondQuarterRezColor, hollywoodFlaresMaterial, 2);
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Graphics.Blit (secondQuarterRezColor, thirdQuarterRezColor, hollywoodFlaresMaterial, 3);
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hollywoodFlaresMaterial.SetVector ("offsets", Vector4 ((sepBlurSpread * 1.0f / widthOverHeight) * oneOverBaseSize, 0.0, 0.0, 0.0));
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hollywoodFlaresMaterial.SetFloat ("stretchWidth", hollyStretchWidth);
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Graphics.Blit (thirdQuarterRezColor, secondQuarterRezColor, hollywoodFlaresMaterial, 1);
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hollywoodFlaresMaterial.SetFloat ("stretchWidth", hollyStretchWidth * 2.0f);
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Graphics.Blit (secondQuarterRezColor, thirdQuarterRezColor, hollywoodFlaresMaterial, 1);
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hollywoodFlaresMaterial.SetFloat ("stretchWidth", hollyStretchWidth * 4.0f);
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Graphics.Blit (thirdQuarterRezColor, secondQuarterRezColor, hollywoodFlaresMaterial, 1);
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if (lensflareMode == 1) {
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for (var itera : int = 0; itera < hollywoodFlareBlurIterations; itera++ ) {
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separableBlurMaterial.SetVector ("offsets", Vector4 ((hollyStretchWidth * 2.0f / widthOverHeight) * oneOverBaseSize, 0.0, 0.0, 0.0));
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Graphics.Blit (secondQuarterRezColor, thirdQuarterRezColor, separableBlurMaterial);
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separableBlurMaterial.SetVector ("offsets", Vector4 ((hollyStretchWidth * 2.0f / widthOverHeight) * oneOverBaseSize, 0.0, 0.0, 0.0));
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Graphics.Blit (thirdQuarterRezColor, secondQuarterRezColor, separableBlurMaterial);
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}
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AddTo (1.0, secondQuarterRezColor, quarterRezColor);
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}
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else {
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// (c) combined
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for (var ix : int = 0; ix < hollywoodFlareBlurIterations; ix++ ) {
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separableBlurMaterial.SetVector ("offsets", Vector4 ((hollyStretchWidth * 2.0f / widthOverHeight) * oneOverBaseSize, 0.0, 0.0, 0.0));
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Graphics.Blit (secondQuarterRezColor, thirdQuarterRezColor, separableBlurMaterial);
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separableBlurMaterial.SetVector ("offsets", Vector4 ((hollyStretchWidth * 2.0f / widthOverHeight) * oneOverBaseSize, 0.0, 0.0, 0.0));
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Graphics.Blit (thirdQuarterRezColor, secondQuarterRezColor, separableBlurMaterial);
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}
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Vignette (1.0, secondQuarterRezColor, thirdQuarterRezColor);
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BlendFlares (thirdQuarterRezColor, secondQuarterRezColor);
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AddTo (1.0, secondQuarterRezColor, quarterRezColor);
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}
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}
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}
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// screen blend bloom results to color buffer
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screenBlend.SetFloat ("_Intensity", bloomIntensity);
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screenBlend.SetTexture ("_ColorBuffer", source);
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Graphics.Blit (quarterRezColor, destination, screenBlend, realBlendMode);
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RenderTexture.ReleaseTemporary (quarterRezColor);
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RenderTexture.ReleaseTemporary (secondQuarterRezColor);
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RenderTexture.ReleaseTemporary (thirdQuarterRezColor);
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}
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private function AddTo (intensity_ : float, from : RenderTexture, to : RenderTexture) {
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addBrightStuffBlendOneOneMaterial.SetFloat ("_Intensity", intensity_);
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Graphics.Blit (from, to, addBrightStuffBlendOneOneMaterial);
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}
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private function BlendFlares (from : RenderTexture, to : RenderTexture) {
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lensFlareMaterial.SetVector ("colorA", Vector4 (flareColorA.r, flareColorA.g, flareColorA.b, flareColorA.a) * lensflareIntensity);
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lensFlareMaterial.SetVector ("colorB", Vector4 (flareColorB.r, flareColorB.g, flareColorB.b, flareColorB.a) * lensflareIntensity);
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lensFlareMaterial.SetVector ("colorC", Vector4 (flareColorC.r, flareColorC.g, flareColorC.b, flareColorC.a) * lensflareIntensity);
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lensFlareMaterial.SetVector ("colorD", Vector4 (flareColorD.r, flareColorD.g, flareColorD.b, flareColorD.a) * lensflareIntensity);
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Graphics.Blit (from, to, lensFlareMaterial);
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}
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private function BrightFilter (thresh : float, useAlphaAsMask : float, from : RenderTexture, to : RenderTexture) {
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if(doHdr)
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brightPassFilterMaterial.SetVector ("threshhold", Vector4 (thresh, 1.0f, 0.0f, 0.0f));
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else
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brightPassFilterMaterial.SetVector ("threshhold", Vector4 (thresh, 1.0f / (1.0f-thresh), 0.0f, 0.0f));
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brightPassFilterMaterial.SetFloat ("useSrcAlphaAsMask", useAlphaAsMask);
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Graphics.Blit (from, to, brightPassFilterMaterial);
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}
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private function Vignette (amount : float, from : RenderTexture, to : RenderTexture) {
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if(lensFlareVignetteMask) {
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screenBlend.SetTexture ("_ColorBuffer", lensFlareVignetteMask);
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Graphics.Blit (from, to, screenBlend, 3);
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}
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else {
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vignetteMaterial.SetFloat ("vignetteIntensity", amount);
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Graphics.Blit (from, to, vignetteMaterial);
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}
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}
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}
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