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| Original file line number | Diff line number | Diff line change |
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| // Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)' | ||
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| /* | ||
| DX11 Bokeh splatting | ||
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| Basic algorithm: | ||
| * Find bright spots | ||
| * Verify high frequency (otherwise dont care) | ||
| * If positive, replace with black pixel and add to append buffer | ||
| * Blend bokeh texture sprites via append buffer on top of blurred buffer | ||
| */ | ||
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| Shader "Hidden/DepthOfField/BokehSplatting" | ||
| { | ||
| Properties | ||
| { | ||
| _MainTex ("", 2D) = "white" {} | ||
| _BlurredColor ("", 2D) = "white" {} | ||
| _FgCocMask ("", 2D) = "white" {} | ||
| } | ||
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| CGINCLUDE | ||
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| #include "UnityCG.cginc" | ||
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| #define BOKEH_ZERO_VEC (float4(0.0,0.0,0.0,0.0)) | ||
| #define BOKEH_ONE_VEC (float4(1.0,1.0,1.0,1.0)) | ||
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| float4 _BokehParams; // dx11BokehScale, dx11BokehIntensity,dx11BokehThreshhold, internalBlurWidth | ||
| float4 _MainTex_TexelSize; | ||
| float3 _Screen; | ||
| float _SpawnHeuristic; | ||
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| sampler2D_float _CameraDepthTexture; | ||
| sampler2D _BlurredColor; | ||
| sampler2D _MainTex; | ||
| sampler2D _FgCocMask; | ||
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| struct appendStruct | ||
| { | ||
| float3 pos; | ||
| float4 color; | ||
| }; | ||
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| struct gs_out | ||
| { | ||
| float4 pos : SV_POSITION; | ||
| float3 uv : TEXCOORD0; | ||
| float4 color : TEXCOORD1; | ||
| float4 misc : TEXCOORD2; | ||
| }; | ||
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| // TODO: activate border clamp tex sampler state instead? | ||
| inline float4 clampBorderColor(float2 uv) | ||
| { | ||
| #if 1 | ||
| if(uv.x <= 0.0) return BOKEH_ZERO_VEC; if(uv.x >= 1.0) return BOKEH_ZERO_VEC; | ||
| if(uv.y <= 0.0) return BOKEH_ZERO_VEC; if(uv.y >= 1.0) return BOKEH_ZERO_VEC; | ||
| #endif | ||
| return BOKEH_ONE_VEC; | ||
| } | ||
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| struct vs_out | ||
| { | ||
| float4 pos : SV_POSITION; | ||
| float2 uv : TEXCOORD0; | ||
| float4 color : TEXCOORD1; | ||
| float cocOverlap : TEXCOORD2; | ||
| }; | ||
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| struct appdata | ||
| { | ||
| float4 vertex : POSITION; | ||
| float2 texcoord : TEXCOORD0; | ||
| }; | ||
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| struct v2f | ||
| { | ||
| float4 pos : SV_POSITION; | ||
| float2 uv_flip : TEXCOORD0; | ||
| float2 uv : TEXCOORD1; | ||
| }; | ||
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| AppendStructuredBuffer<appendStruct> pointBufferOutput : register(u1); | ||
| StructuredBuffer<appendStruct> pointBuffer; | ||
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| vs_out vertApply (uint id : SV_VertexID) | ||
| { | ||
| vs_out o = (vs_out)0; | ||
| float2 pos = pointBuffer[id].pos.xy ; | ||
| o.pos = float4(pos * 2.0 - 1.0, 0.0, 1.0); | ||
| o.color = pointBuffer[id].color; | ||
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| #if UNITY_UV_STARTS_AT_TOP | ||
| o.pos.y *= -1.0; | ||
| #endif | ||
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| o.cocOverlap = pointBuffer[id].pos.z; | ||
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| return o; | ||
| } | ||
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| v2f vertCollect (appdata v) | ||
| { | ||
| v2f o; | ||
| o.pos = UnityObjectToClipPos (v.vertex); | ||
| o.uv = v.texcoord; | ||
| o.uv_flip = v.texcoord; | ||
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| #if UNITY_UV_STARTS_AT_TOP | ||
| if (_MainTex_TexelSize.y < 0.0) | ||
| { | ||
| o.uv_flip.y = 1.0 - o.uv_flip.y; | ||
| o.pos.y *= -1.0; | ||
| } | ||
| #endif | ||
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| return o; | ||
| } | ||
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| [maxvertexcount(4)] | ||
| void geom (point vs_out input[1], inout TriangleStream<gs_out> outStream) | ||
| { | ||
| // NEW ENERGY CONSERVATION: | ||
| float2 scale2 = _BokehParams.ww * input[0].color.aa * _BokehParams.xx; | ||
| float4 offs = 0.0; | ||
| offs.xy = float2(3.0, 3.0) + 2.0 * floor(scale2 + float2(0.5, 0.5)); | ||
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| float2 rs = ((float2(1.0, 1.0) + 2.0 * (scale2 + float2(0.5, 0.5))));; | ||
| float2 f2 = offs.xy / rs; | ||
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| float energyAdjustment = (_BokehParams.y) / (rs.x * rs.y); | ||
| offs.xy *= _Screen.xy; | ||
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| gs_out output; | ||
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| output.pos = input[0].pos + offs * float4(-1.0, 1.0, 0.0, 0.0); | ||
| output.misc = float4(f2, 0.0, 0.0); | ||
| output.uv = float3(0.0, 1.0, input[0].cocOverlap); | ||
| output.color = input[0].color * energyAdjustment; | ||
| outStream.Append (output); | ||
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| output.pos = input[0].pos + offs*float4(1.0, 1.0, 0.0, 0.0); | ||
| output.misc = float4(f2, 0.0, 0.0); | ||
| output.uv = float3(1.0, 1.0, input[0].cocOverlap); | ||
| output.color = input[0].color * energyAdjustment; | ||
| outStream.Append (output); | ||
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| output.pos = input[0].pos + offs*float4(-1.0, -1.0, 0.0, 0.0); | ||
| output.misc = float4(f2, 0.0, 0.0); | ||
| output.uv = float3(0.0, 0.0, input[0].cocOverlap); | ||
| output.color = input[0].color * energyAdjustment; | ||
| outStream.Append (output); | ||
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| output.pos = input[0].pos + offs*float4(1.0, -1.0, 0.0, 0.0); | ||
| output.misc = float4(f2, 0.0, 0.0); | ||
| output.uv = float3(1.0, 0.0, input[0].cocOverlap); | ||
| output.color = input[0].color * energyAdjustment; | ||
| outStream.Append (output); | ||
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| outStream.RestartStrip(); | ||
| } | ||
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| float4 collectBrightPixel(half2 uv) | ||
| { | ||
| half4 c = tex2D(_MainTex, uv); | ||
| half coc = abs(c.a); | ||
| half lumc = Luminance(c.rgb); | ||
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| half4 cblurred = tex2D(_BlurredColor, uv); | ||
| half cocBlurred = abs(cblurred.a); | ||
| half lumblurred = Luminance(cblurred.rgb); | ||
| half fgCoc = -min(c.a, 0.0); | ||
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| [branch] | ||
| if (coc * _BokehParams.w > 1.0 && cocBlurred > 0.1 && lumc > _BokehParams.z && abs(lumc - lumblurred) > _SpawnHeuristic) | ||
| { | ||
| appendStruct append = (appendStruct)0; | ||
| append.pos = float3(uv, fgCoc); | ||
| append.color.rgba = half4(c.rgb * saturate(coc * 4.0), coc); | ||
| pointBufferOutput.Append(append); | ||
| c = half4(c.rgb * saturate(1.0 - coc * 4.0), c.a); | ||
| } | ||
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| return c; | ||
| } | ||
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| ENDCG | ||
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| SubShader | ||
| { | ||
| // Pass 0: bokeh splatting | ||
| Pass | ||
| { | ||
| ZWrite Off ZTest Always Cull Off | ||
| BlendOp Add, Add | ||
| Blend DstAlpha One, Zero One | ||
| ColorMask RGBA | ||
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| CGPROGRAM | ||
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| #pragma target 5.0 | ||
| #pragma vertex vertApply | ||
| #pragma geometry geom | ||
| #pragma fragment frag | ||
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| fixed4 frag (gs_out i) : SV_Target | ||
| { | ||
| float2 uv = (i.uv.xy) * i.misc.xy + (float2(1,1)-i.misc.xy) * 0.5; // smooth uv scale | ||
| return float4(i.color.rgb, 1) * float4(tex2D(_MainTex, uv.xy).rgb, i.uv.z) * clampBorderColor (uv); | ||
| } | ||
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| ENDCG | ||
| } | ||
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| // Pass 1: append buffer "collect" | ||
| Pass | ||
| { | ||
| ZWrite Off ZTest Always Cull Off | ||
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| CGPROGRAM | ||
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| #pragma vertex vertCollect | ||
| #pragma fragment frag | ||
| #pragma target 5.0 | ||
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| float4 frag (v2f i) : SV_Target | ||
| { | ||
| return collectBrightPixel(i.uv); | ||
| } | ||
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| ENDCG | ||
| } | ||
| } | ||
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| Fallback Off | ||
| } |
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