diff options
Diffstat (limited to 'Assets/ThirdParty/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_TriplanarNode.shader')
| -rw-r--r-- | Assets/ThirdParty/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_TriplanarNode.shader | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/Assets/ThirdParty/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_TriplanarNode.shader b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_TriplanarNode.shader new file mode 100644 index 00000000..b5fc2b69 --- /dev/null +++ b/Assets/ThirdParty/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_TriplanarNode.shader @@ -0,0 +1,103 @@ +Shader "Hidden/TriplanarNode" +{ + Properties + { + _A ("_TopTex", 2D) = "white" {} + _B ("_MidTex", 2D) = "white" {} + _C ("_BotTex", 2D) = "white" {} + _D ("_Tilling", 2D) = "white" {} + _E ("_Falloff", 2D) = "white" {} + } + SubShader + { + Pass + { + CGPROGRAM + #pragma vertex vert_img + #pragma fragment frag + #pragma target 3.0 + #include "UnityCG.cginc" + #include "UnityStandardUtils.cginc" + + sampler2D _A; + sampler2D _B; + sampler2D _C; + sampler2D _D; + sampler2D _E; + float _IsNormal; + float _IsSpherical; + + inline float3 TriplanarSamplingCNF( sampler2D topTexMap, sampler2D midTexMap, sampler2D botTexMap, float3 worldPos, float3 worldNormal, float falloff, float tilling ) + { + float3 projNormal = ( pow( abs( worldNormal ), falloff ) ); + projNormal /= projNormal.x + projNormal.y + projNormal.z; + float3 nsign = sign( worldNormal ); + float negProjNormalY = max( 0, projNormal.y * -nsign.y ); + projNormal.y = max( 0, projNormal.y * nsign.y ); + half4 xNorm; half4 yNorm; half4 yNormN; half4 zNorm; + xNorm = ( tex2D( midTexMap, tilling * worldPos.zy * float2( nsign.x, 1.0 ) ) ); + yNorm = ( tex2D( topTexMap, tilling * worldPos.xz * float2( nsign.y, 1.0 ) ) ); + yNormN = ( tex2D( botTexMap, tilling * worldPos.xz * float2( nsign.y, 1.0 ) ) ); + zNorm = ( tex2D( midTexMap, tilling * worldPos.xy * float2( -nsign.z, 1.0 ) ) ); + xNorm.xyz = half3( UnpackNormal( xNorm ).xy * float2( nsign.x, 1.0 ) + worldNormal.zy, worldNormal.x ).zyx; + yNorm.xyz = half3( UnpackNormal( yNorm ).xy * float2( nsign.y, 1.0 ) + worldNormal.xz, worldNormal.y ).xzy; + zNorm.xyz = half3( UnpackNormal( zNorm ).xy * float2( -nsign.z, 1.0 ) + worldNormal.xy, worldNormal.z ).xyz; + yNormN.xyz = half3( UnpackNormal( yNormN ).xy * float2( nsign.y, 1.0 ) + worldNormal.xz, worldNormal.y ).xzy; + return normalize( xNorm.xyz * projNormal.x + yNorm.xyz * projNormal.y + yNormN.xyz * negProjNormalY + zNorm.xyz * projNormal.z ); + } + + inline float4 TriplanarSamplingCF( sampler2D topTexMap, sampler2D midTexMap, sampler2D botTexMap, float3 worldPos, float3 worldNormal, float falloff, float tilling ) + { + float3 projNormal = ( pow( abs( worldNormal ), falloff ) ); + projNormal /= projNormal.x + projNormal.y + projNormal.z; + float3 nsign = sign( worldNormal ); + float negProjNormalY = max( 0, projNormal.y * -nsign.y ); + projNormal.y = max( 0, projNormal.y * nsign.y ); + half4 xNorm; half4 yNorm; half4 yNormN; half4 zNorm; + xNorm = ( tex2D( midTexMap, tilling * worldPos.zy * float2( nsign.x, 1.0 ) ) ); + yNorm = ( tex2D( topTexMap, tilling * worldPos.xz * float2( nsign.y, 1.0 ) ) ); + yNormN = ( tex2D( botTexMap, tilling * worldPos.xz * float2( nsign.y, 1.0 ) ) ); + zNorm = ( tex2D( midTexMap, tilling * worldPos.xy * float2( -nsign.z, 1.0 ) ) ); + return xNorm * projNormal.x + yNorm * projNormal.y + yNormN * negProjNormalY + zNorm * projNormal.z; + } + + float4 frag( v2f_img i ) : SV_Target + { + float2 xy = 2 * i.uv - 1; + float z = -sqrt(1-saturate(dot(xy,xy))); + float3 vertexPos = float3(xy, z); + float3 normal = normalize(vertexPos); + float3 worldNormal = UnityObjectToWorldNormal(normal); + float3 worldPos = mul(unity_ObjectToWorld, vertexPos).xyz; + + float falloff = tex2D( _E, xy ).r; + float tilling = tex2D( _D, xy ).r * 0.625; + float4 triplanar = 1; + + if ( _IsNormal == 1 ) { + float3 tangent = normalize(float3( -z, xy.y*0.01, xy.x )); + float3 worldTangent = UnityObjectToWorldDir(tangent); + float tangentSign = -1; + float3 worldBinormal = normalize( cross(worldNormal, worldTangent) * tangentSign); + float3x3 worldToTangent = float3x3( worldTangent, worldBinormal, worldNormal ); + if ( _IsSpherical == 1 ) + triplanar.xyz = TriplanarSamplingCNF( _A, _A, _A, worldPos, worldNormal, falloff, tilling ); + else + triplanar.xyz = TriplanarSamplingCNF( _A, _B, _C, worldPos, worldNormal, falloff, tilling ); + + triplanar.xyz = mul( worldToTangent, triplanar.xyz ); + } + else + { + if ( _IsSpherical == 1 ) + triplanar = TriplanarSamplingCF( _A, _A, _A, worldPos, worldNormal, falloff, tilling ); + else + triplanar = TriplanarSamplingCF( _A, _B, _C, worldPos, worldNormal, falloff, tilling ); + } + + return triplanar; + } + ENDCG + } + } +} |