93 lines
2.2 KiB
Plaintext
93 lines
2.2 KiB
Plaintext
// Crest Water System
|
|
// Copyright © 2024 Wave Harmonic. All rights reserved.
|
|
|
|
// Renders convex hull to the clip surface texture.
|
|
|
|
Shader "Hidden/Crest/Inputs/Clip/Convex Hull"
|
|
{
|
|
CGINCLUDE
|
|
#pragma vertex Vertex
|
|
#pragma fragment Fragment
|
|
|
|
// For SV_IsFrontFace.
|
|
#pragma target 3.0
|
|
|
|
#include "UnityCG.cginc"
|
|
#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/Cascade.hlsl"
|
|
#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Surface/Geometry.hlsl"
|
|
|
|
CBUFFER_START(CrestPerWaterInput)
|
|
bool _Crest_Inverted;
|
|
CBUFFER_END
|
|
|
|
m_CrestNameSpace
|
|
|
|
struct Attributes
|
|
{
|
|
float3 positionOS : POSITION;
|
|
};
|
|
|
|
struct Varyings
|
|
{
|
|
float4 positionCS : SV_POSITION;
|
|
float3 positionWS : TEXCOORD0;
|
|
};
|
|
|
|
Varyings Vertex(Attributes input)
|
|
{
|
|
Varyings o;
|
|
o.positionCS = UnityObjectToClipPos(input.positionOS);
|
|
o.positionWS = mul(unity_ObjectToWorld, float4(input.positionOS, 1.0));
|
|
return o;
|
|
}
|
|
|
|
float4 Fragment(Varyings input, const bool isFrontFace)
|
|
{
|
|
float3 surfacePositionWS = Cascade::MakeAnimatedWaves(_Crest_LodIndex)
|
|
.SampleDisplacementFromUndisplaced(input.positionWS.xz);
|
|
|
|
// Move to sea level.
|
|
surfacePositionWS.y += g_Crest_WaterCenter.y;
|
|
|
|
// Clip if above water.
|
|
if (input.positionWS.y > surfacePositionWS.y)
|
|
{
|
|
clip(-1.0);
|
|
}
|
|
|
|
// To add clipping, back face must write one and front face must write zero.
|
|
return float4(isFrontFace == _Crest_Inverted ? 1.0 : 0.0, 0.0, 0.0, 1.0);
|
|
}
|
|
|
|
m_CrestNameSpaceEnd
|
|
|
|
m_CrestVertex
|
|
m_CrestFragmentWithFrontFace(float4)
|
|
|
|
ENDCG
|
|
|
|
SubShader
|
|
{
|
|
ZWrite Off
|
|
ColorMask R
|
|
|
|
Pass
|
|
{
|
|
Cull Front
|
|
// Here so CGINCLUDE works.
|
|
CGPROGRAM
|
|
ENDCG
|
|
}
|
|
|
|
Pass
|
|
{
|
|
Cull Back
|
|
// Here so CGINCLUDE works.
|
|
CGPROGRAM
|
|
ENDCG
|
|
}
|
|
}
|
|
}
|