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- #ifndef CALMWATER_CAUSTICS_INCLUDED
- #define CALMWATER_CAUSTICS_INCLUDED
- // ===========================================================================
- // Caustics
- // ===========================================================================
- void ComputeCaustics(inout GlobalData data)
- {
- #ifdef UNITY_PASS_FORWARDBASE
- #ifndef CULL_FRONT
- #if _CAUSTICS_ON
- float2 causticsUV = ProjectedWorldPos(data.worldPosition.xyz, data.depth, data.DepthUV.z).xz / _CausticsTex_ST.xy + _CausticsTex_ST.zw;
- causticsUV += data.worldNormal.xy * 0.0015 * _Distortion;
- causticsUV += frac(_Time.x * _CausticsSpeed);
- float causticsDepth = DistanceFade(data.depth, data.DepthUV.z, _CausticsStart, _CausticsEnd);
- data.finalColor += tex2D(_CausticsTex, causticsUV) * causticsDepth * data.finalColor * _CausticsIntensity * _LightColor0.rgb;
- #endif
- #endif
- #endif
- }
- #endif
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