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Packages/com.waveharmonic.crest/Runtime/Shaders/Surface/Facing.hlsl

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+// Crest Water System
+// Copyright © 2024 Wave Harmonic. All rights reserved.
+
+#ifndef d_WaveHarmonic_Crest_SurfaceFacing
+#define d_WaveHarmonic_Crest_SurfaceFacing
+
+#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Constants.hlsl"
+#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Macros.hlsl"
+#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Settings.Crest.hlsl"
+#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Helpers.hlsl"
+
+TEXTURE2D_X(_Crest_WaterMaskTexture);
+
+m_CrestNameSpace
+
+bool IsUnderWater(const bool i_FrontFace, const int i_ForceUnderwater, const uint2 i_PositionSS)
+{
+    bool underwater = false;
+
+    // Use mask.
+    if (i_ForceUnderwater == 0)
+    {
+        underwater = LOAD_TEXTURE2D_X(_Crest_WaterMaskTexture, i_PositionSS).r <= CREST_MASK_BELOW_SURFACE;
+    }
+    else
+    {
+        underwater = IsUnderWater(i_FrontFace, i_ForceUnderwater);
+    }
+
+    return underwater;
+}
+
+m_CrestNameSpaceEnd
+
+#endif // d_WaveHarmonic_Crest_SurfaceFacing