110 lines
3.8 KiB
Plaintext
110 lines
3.8 KiB
Plaintext
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float3 ToonBary(float2 uv)
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{
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float3 w = 0;
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float2 baseId = floor(uv);
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float2 f = frac(uv);
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if (f.x > f.y)
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{
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w.xy = f.xy;
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w.z = f.x - f.y;
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}
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else
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{
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w.xy = f.xy;
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w.z = f.y - f.x;
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}
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return w;
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}
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float4 ToonQuad(float2 uv)
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{
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float2 uvfrac = frac(uv);
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return float4(uvfrac.x, uvfrac.y, 1.0 - uvfrac.x, 1.0 - uvfrac.y);
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}
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float2 ToonEdgeUV(float2 uv)
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{
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float2 smoothUV = uv;
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float2 scaledUV = uv * _ToonTerrainSize;
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float2 hardUV = floor(scaledUV) / _ToonTerrainSize;
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#if _TOONHARDEDGENORMALQUAD
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float4 w = ToonQuad(scaledUV);
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float mw = min(w.x, min(min(w.y, w.z), w.w));
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#else
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float3 w = ToonBary(scaledUV);
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float mw = min(min(w.x, w.y), w.z);
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#endif
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return lerp(hardUV, smoothUV,pow(mw, abs(_ToonEdgeHardness)));
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}
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#if _TOONPOLYEDGE
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void FlatShade(inout ShaderData d)
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{
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float3 dx = ddx(d.worldSpacePosition);
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float3 dy = ddy(d.worldSpacePosition);
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float3 worldNormal = normalize(cross(dy, dx));
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worldNormal = lerp(d.worldSpaceNormal, worldNormal, _ToonEdgeHardness);
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d.worldSpaceNormal = worldNormal;
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d.TBNMatrix[2] = worldNormal;
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}
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#endif
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void ToonWireframe(float2 uv, inout half3 color, float camDist)
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{
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#if _TOONWIREQUADS
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float2 scaledUV = uv * _ToonTerrainSize;
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float4 w = ToonQuad(scaledUV);
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#if !_TOONWIREWORLDSPACE
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float4 deltas = fwidth(w);
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float4 smoothing = deltas * _ToonWireSmoothing;
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float4 thickness = deltas * _ToonWireThickness;
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w = smoothstep(thickness, thickness + smoothing, w);
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float mw = min(w.x, min(w.y, min(w.z, w.w)));
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#else
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float mw = min(w.x, min(w.y, min(w.z, w.w)));
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mw = smoothstep(0, _ToonWireThickness, mw);
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mw = pow(mw, _ToonWireSmoothing);
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#endif
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#else // triangles
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float2 smoothUV = uv;
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float2 scaledUV = uv * _ToonTerrainSize;
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float2 hardUV = floor(scaledUV) / _ToonTerrainSize;
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float3 w = ToonBary(scaledUV);
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#if !_TOONWIREWORLDSPACE
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float3 deltas = fwidth(w);
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float3 smoothing = deltas * _ToonWireSmoothing;
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float3 thickness = deltas * _ToonWireThickness;
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w = smoothstep(thickness, thickness + smoothing, w);
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float mw = min(w.x, min(w.y, w.z));
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#else
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float mw = min(w.x, min(w.y, w.z));
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mw = smoothstep(0, _ToonWireThickness, mw);
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mw = pow(mw, _ToonWireSmoothing);
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#endif
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#endif
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#if _TOONWIREFADE
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camDist -= _ToonWireFade.x;
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camDist /= max(1, _ToonWireFade.y);
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camDist = saturate(camDist);
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mw = saturate(mw+camDist);
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#endif
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#if _WIRESATURATIONBRIGHTNESS
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half lum = MSLuminance(color);
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half3 sat = lerp(half3(lum, lum, lum), color, _ToonWireSaturationBrightness.x);
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color = lerp(sat, color, mw);
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color = lerp(saturate(color + _ToonWireSaturationBrightness.y - 1), color, mw);
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#else
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color = lerp(_ToonWireColor, color, mw * _ToonWireColor.a);
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#endif
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}
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