修改水

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

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+// Crest Water System
+// Copyright © 2024 Wave Harmonic. All rights reserved.
+
+#ifndef CREST_WATER_ALPHA_H
+#define CREST_WATER_ALPHA_H
+
+#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Macros.hlsl"
+#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Globals.hlsl"
+#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/InputsDriven.hlsl"
+#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Helpers.hlsl"
+#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Cascade.hlsl"
+
+m_CrestNameSpace
+
+float ClipSurface(const float2 i_PositionWSXZ)
+{
+    // Do not include transition slice to avoid blending as we do a black border instead.
+    uint slice0; uint slice1; float alpha;
+    PosToSliceIndices(i_PositionWSXZ, 0.0, g_Crest_LodCount - 1.0, g_Crest_WaterScale, slice0, slice1, alpha);
+
+    const Cascade cascade0 = Cascade::Make(slice0);
+    const Cascade cascade1 = Cascade::Make(slice1);
+    const float weight0 = (1.0 - alpha) * cascade0._Weight;
+    const float weight1 = (1.0 - weight0) * cascade1._Weight;
+
+    float value = 0.0;
+
+    if (weight0 > m_CrestSampleLodThreshold)
+    {
+        Cascade::MakeClip(slice0).SampleClip(i_PositionWSXZ, weight0, value);
+    }
+    if (weight1 > m_CrestSampleLodThreshold)
+    {
+        Cascade::MakeClip(slice1).SampleClip(i_PositionWSXZ, weight1, value);
+    }
+
+    return lerp(g_Crest_ClipByDefault, value, weight0 + weight1);
+}
+
+m_CrestNameSpaceEnd
+
+#endif