44 lines
1.7 KiB
HLSL
44 lines
1.7 KiB
HLSL
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#ifndef PRIPPLE_INCLUDED
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#define PRIPPLE_INCLUDED
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#include "PUniforms.cginc"
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#include "PCommon.cginc"
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float4 CalculateRippleVertexOffset(float4 localPos, float rippleHeight, float rippleSpeed, float rippleScale, float3 flowDir)
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{
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float4 worldPos = mul(unity_ObjectToWorld, float4(localPos.xyz, 1));
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float2 noisePos = float2(worldPos.x, worldPos.z);
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rippleScale *= 0.01;
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rippleSpeed *= 0.1;
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float noiseBase = SampleVertexNoise((noisePos - flowDir.xz * _PoseidonTime * rippleSpeed) * rippleScale) * 0.5 + 0.5;
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float noiseFade = lerp(0.5, 1, SampleVertexNoise((noisePos + flowDir.xz * _PoseidonTime * rippleSpeed * 3) * rippleScale) * 0.5 + 0.5);
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float noise = abs(noiseBase - noiseFade);
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float4 offset = float4(0, noise * rippleHeight, 0, 0);
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return offset;
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}
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void ApplyRipple(inout float4 v0, inout float4 v1, inout float4 v2)
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{
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float3 flowDir = float3(1, 1, 1);
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v0 += CalculateRippleVertexOffset(v0, _RippleHeight, _RippleSpeed, _RippleNoiseScale, flowDir);
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v1 += CalculateRippleVertexOffset(v1, _RippleHeight, _RippleSpeed, _RippleNoiseScale, flowDir);
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v2 += CalculateRippleVertexOffset(v2, _RippleHeight, _RippleSpeed, _RippleNoiseScale, flowDir);
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}
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void ApplyRipple(inout float4 vertex,inout float4 texcoord, inout float4 color, float4 texcoord1)
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{
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float3 flow0 = float3(texcoord.w, 0, color.w);
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float3 flow1 = float3(texcoord1.x, 0, texcoord1.y);
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float3 flow2 = float3(texcoord1.z, 0, texcoord1.w);
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vertex += CalculateRippleVertexOffset(vertex, _RippleHeight, _RippleSpeed, _RippleNoiseScale, flow0);
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texcoord += CalculateRippleVertexOffset(texcoord, _RippleHeight, _RippleSpeed, _RippleNoiseScale, flow1);
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color += CalculateRippleVertexOffset(color, _RippleHeight, _RippleSpeed, _RippleNoiseScale, flow2);
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}
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#endif
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