Le Duc Anh
118 lines
4.1 KiB
Plaintext
118 lines
4.1 KiB
Plaintext
Shader "Custom/URP_PureDistortion"
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{
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Properties
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{
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[Header(Distortion)]
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_NormalMap("Normal Map", 2D) = "bump" {}
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_Distortion("Distortion Strength", Range(0, 0.5)) = 0.1
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_NormalStrength("Normal Strength", Range(0, 5)) = 1.0
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[Header(Animation)]
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_ScrollSpeedX("Scroll Speed X", Float) = 0.1
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_ScrollSpeedY("Scroll Speed Y", Float) = 0.2
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[Header(Color)]
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_TintColor("Tint Color", Color) = (1, 1, 1, 0.5)
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}
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SubShader
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{
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Tags
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{
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"RenderType" = "Transparent"
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"RenderPipeline" = "UniversalPipeline"
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"Queue" = "Transparent"
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}
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Pass
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{
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Name "PureDistortion"
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ZWrite Off
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Cull Off
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Blend SrcAlpha OneMinusSrcAlpha
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HLSLPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#pragma multi_compile_fog
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/DeclareOpaqueTexture.hlsl"
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TEXTURE2D(_NormalMap);
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SAMPLER(sampler_NormalMap);
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CBUFFER_START(UnityPerMaterial)
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float4 _NormalMap_ST;
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float4 _TintColor;
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float _Distortion;
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float _NormalStrength;
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float _ScrollSpeedX;
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float _ScrollSpeedY;
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CBUFFER_END
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struct Attributes
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{
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float4 positionOS : POSITION;
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float2 uv : TEXCOORD0;
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float4 color : COLOR;
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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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float4 color : COLOR;
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float4 screenPos : TEXCOORD1;
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float fogFactor : TEXCOORD2;
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};
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Varyings vert(Attributes input)
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{
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Varyings output;
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VertexPositionInputs vertexInput = GetVertexPositionInputs(input.positionOS.xyz);
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output.positionCS = vertexInput.positionCS;
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output.uv = TRANSFORM_TEX(input.uv, _NormalMap);
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output.color = input.color;
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output.screenPos = ComputeScreenPos(vertexInput.positionCS);
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output.fogFactor = ComputeFogFactor(vertexInput.positionCS.z);
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return output;
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}
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half4 frag(Varyings input) : SV_Target
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{
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// Animated normal map sampling
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float2 scrolledUV = input.uv + float2(_ScrollSpeedX, _ScrollSpeedY) * _Time.y;
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float3 normalMap = UnpackNormal(SAMPLE_TEXTURE2D(_NormalMap, sampler_NormalMap, scrolledUV));
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normalMap.xy *= _NormalStrength;
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// Calculate screen UV
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float2 screenUV = input.screenPos.xy / input.screenPos.w;
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// Apply normal-based distortion to screen UV
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float2 distortedScreenUV = screenUV + normalMap.xy * _Distortion * input.color.a;
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// Sample the background/opaque texture with distortion
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half3 sceneColor = SampleSceneColor(distortedScreenUV);
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// Apply tint color
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sceneColor *= _TintColor.rgb * input.color.rgb;
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// Apply fog
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sceneColor = MixFog(sceneColor, input.fogFactor);
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// Calculate final alpha
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float finalAlpha = _TintColor.a * input.color.a;
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return half4(sceneColor, finalAlpha);
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}
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ENDHLSL
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}
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}
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FallBack "Hidden/Universal Render Pipeline/FallbackError"
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} |