52 lines
1.4 KiB
HLSL
52 lines
1.4 KiB
HLSL
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#ifndef EDGE_FUSION_BLEND_PASS_INCLUDED
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#define EDGE_FUSION_BLEND_PASS_INCLUDED
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#include "EdgeFusionBlendLibrary.hlsl"
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float4 FragBlendEdges(EFVaryings i) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(i);
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float2 uv = UnityStereoTransformScreenSpaceTex(i.texcoord);
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float4 c0 = SampleColor(uv);
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float2 uvSurfaceB;
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float edgeFactor = FindEdgeNeighbour(uv, uvSurfaceB);
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if (edgeFactor <= 0.0) return c0;
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#if EDGE_FUSION_MSAA_EDGE_FIX
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float2 dir = normalize(uvSurfaceB - uv) * _SrcColorTexture_TexelSize.xy * MSAA_FIX_POWER;
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c0 = SampleColor(uv - dir);
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float4 surf0 = SampleColor(uvSurfaceB + dir);
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#else
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float4 surf0 = SampleColor(uvSurfaceB);
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#endif
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float fallOff = 2;
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// screen-edge "vignette" fade
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float2 distUV = min(uv, 1.0 - uv);
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float edgeFade = min(distUV.x, distUV.y);
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float2 distUVB = min(uvSurfaceB, 1.0 - uvSurfaceB);
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float edgeFadeB = min(distUVB.x, distUVB.y);
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edgeFade = min(edgeFade, edgeFadeB);
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edgeFade = 1 - smoothstep(0, 0.05, edgeFade);
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fallOff += edgeFade * 4.0;
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// avoid brightening shadows
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float lumaBase = GetLuma(c0.rgb);
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float invLuma2 = rcp(lumaBase * lumaBase + 1e-6);
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fallOff += clamp( SHADOW_PROTECTION * invLuma2, 0, 16);
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// apply falloff
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float blendAmount = pow(edgeFactor, fallOff);
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// blend
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blendAmount *= GLOBAL_INTENSITY * 0.5;
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float3 blended = ColorLerp(c0.rgb, surf0.rgb, blendAmount);
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return float4(blended, c0.a);
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}
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#endif // EDGE_FUSION_BLEND_PASS_INCLUDED
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