88 lines
2.3 KiB
Plaintext
88 lines
2.3 KiB
Plaintext
// Crest Water System
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// Copyright © 2024 Wave Harmonic. All rights reserved.
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Shader "Crest/Inputs/Animated Waves/Add From Texture"
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{
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Properties
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{
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[MainTexture] _Crest_Texture("Texture", 2D) = "black" {}
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_Crest_Strength( "Strength", float ) = 1
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[Toggle(d_HeightsOnly)]
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_Crest_HeightsOnly("Heights Only", Float) = 1
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[HideInInspector]
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_Crest_Version("Version", Integer) = 0
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}
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SubShader
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{
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Blend One One
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ZTest Always
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ZWrite Off
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Pass
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{
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CGPROGRAM
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#pragma vertex Vert
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#pragma fragment Frag
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#pragma shader_feature_local_fragment d_HeightsOnly
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#include "UnityCG.cginc"
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Texture2D _Crest_Texture;
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SamplerState sampler_Crest_Texture;
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CBUFFER_START(CrestPerWaterInput)
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float4 _Crest_Texture_ST;
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float _Crest_Strength;
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float _Crest_Weight;
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float3 _Crest_DisplacementAtInputPosition;
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CBUFFER_END
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struct Attributes
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{
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float3 positionOS : POSITION;
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float2 uv : TEXCOORD0;
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};
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struct Varyings
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{
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float4 positionCS : SV_POSITION;
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float2 uv : TEXCOORD0;
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};
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Varyings Vert(Attributes input)
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{
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Varyings o;
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float3 worldPos = mul(unity_ObjectToWorld, float4(input.positionOS, 1.0)).xyz;
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// Correct for displacement
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worldPos.xz -= _Crest_DisplacementAtInputPosition.xz;
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o.positionCS = mul(UNITY_MATRIX_VP, float4(worldPos, 1.0));
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o.uv = TRANSFORM_TEX(input.uv, _Crest_Texture);
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return o;
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}
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half4 Frag(Varyings input) : SV_Target
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{
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half3 texSample = _Crest_Texture.Sample(sampler_Crest_Texture, input.uv).xyz;
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half3 displacement = (half3)0.0;
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#if d_HeightsOnly
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displacement.y = texSample.x * _Crest_Strength;
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#else
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displacement.xyz = texSample * _Crest_Strength;
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#endif
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return _Crest_Weight * half4(displacement, 0.0);
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}
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ENDCG
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}
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}
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CustomEditor "WaveHarmonic.Crest.Editor.CustomShaderGUI"
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}
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