33 lines
1.1 KiB
HLSL
33 lines
1.1 KiB
HLSL
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#if defined(DIRECTIONAL_CAUSTICS)
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/NormalReconstruction.hlsl"
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#endif
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TEXTURE2D(_CausticsTex);
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SAMPLER(sampler_CausticsTex);
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float3 SampleCaustics(float2 uv, float2 time, float tiling)
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{
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float3 caustics1 = SAMPLE_TEXTURE2D(_CausticsTex, sampler_CausticsTex, uv * tiling + (time.xy)).rgb;
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float3 caustics2 = SAMPLE_TEXTURE2D(_CausticsTex, sampler_CausticsTex, (uv * tiling * 0.8) - (time.xy)).rgb;
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#if UNITY_COLORSPACE_GAMMA
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caustics1 = SRGBToLinear(caustics1);
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caustics2 = SRGBToLinear(caustics2);
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#endif
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float3 caustics = min(caustics1, caustics2);
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#if HQ_CAUSTICS
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float3 caustics3 = SAMPLE_TEXTURE2D(_CausticsTex, sampler_CausticsTex, (uv * tiling * 0.6) + (time.xy * 1.2)).rgb * 1;
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float3 caustics4 = SAMPLE_TEXTURE2D(_CausticsTex, sampler_CausticsTex, (uv * tiling * 0.55) - (time.xy * 1.2)).rgb * 1;
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caustics4 = min(caustics3, caustics4);
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caustics = min(caustics, caustics4) * 2.0;
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#endif
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#if WAVE_SIMULATION
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SampleWaveCaustics(float3(uv.x, 0, uv.y), caustics);
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#endif
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return caustics;
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}
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