diff options
Diffstat (limited to 'Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_GradientSample.shader')
| -rw-r--r-- | Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_GradientSample.shader | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_GradientSample.shader b/Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_GradientSample.shader new file mode 100644 index 00000000..28aebf55 --- /dev/null +++ b/Assets/AmplifyShaderEditor/Plugins/EditorResources/Previews/Preview_GradientSample.shader @@ -0,0 +1,123 @@ +Shader "Hidden/GradientSample" +{ + Properties + { + _GTime( "_Time", 2D ) = "white" {} + _GType( "_GType", Int ) = 0 + _GColorNum( "_GColorNum", Int ) = 0 + _GAlphaNum( "_GAlphaNum", Int ) = 0 + _Col0( "_Col0", Vector ) = ( 0, 0, 0, 0 ) + _Col1( "_Col1", Vector ) = ( 0, 0, 0, 0 ) + _Col2( "_Col2", Vector ) = ( 0, 0, 0, 0 ) + _Col3( "_Col3", Vector ) = ( 0, 0, 0, 0 ) + _Col4( "_Col4", Vector ) = ( 0, 0, 0, 0 ) + _Col5( "_Col5", Vector ) = ( 0, 0, 0, 0 ) + _Col6( "_Col6", Vector ) = ( 0, 0, 0, 0 ) + _Col7( "_Col7", Vector ) = ( 0, 0, 0, 0 ) + _Alp0( "_Alp0", Vector ) = ( 0, 0, 0, 0 ) + _Alp1( "_Alp1", Vector ) = ( 0, 0, 0, 0 ) + _Alp2( "_Alp2", Vector ) = ( 0, 0, 0, 0 ) + _Alp3( "_Alp3", Vector ) = ( 0, 0, 0, 0 ) + _Alp4( "_Alp4", Vector ) = ( 0, 0, 0, 0 ) + _Alp5( "_Alp5", Vector ) = ( 0, 0, 0, 0 ) + _Alp6( "_Alp6", Vector ) = ( 0, 0, 0, 0 ) + _Alp7( "_Alp7", Vector ) = ( 0, 0, 0, 0 ) + } + SubShader + { + Pass + { + CGPROGRAM + #pragma vertex vert_img + #pragma fragment frag + #include "UnityCG.cginc" + + sampler2D _GTime; + int _GType; + int _GColorNum; + int _GAlphaNum; + float4 _Col0; + float4 _Col1; + float4 _Col2; + float4 _Col3; + float4 _Col4; + float4 _Col5; + float4 _Col6; + float4 _Col7; + float4 _Alp0; + float4 _Alp1; + float4 _Alp2; + float4 _Alp3; + float4 _Alp4; + float4 _Alp5; + float4 _Alp6; + float4 _Alp7; + + struct Gradient + { + int type; + int colorsLength; + int alphasLength; + float4 colors[ 8 ]; + float2 alphas[ 8 ]; + }; + + Gradient NewGradient( int type, int colorsLength, int alphasLength, + float4 colors0, float4 colors1, float4 colors2, float4 colors3, float4 colors4, float4 colors5, float4 colors6, float4 colors7, + float2 alphas0, float2 alphas1, float2 alphas2, float2 alphas3, float2 alphas4, float2 alphas5, float2 alphas6, float2 alphas7 ) + { + Gradient g; + g.type = type; + g.colorsLength = colorsLength; + g.alphasLength = alphasLength; + g.colors[ 0 ] = colors0; + g.colors[ 1 ] = colors1; + g.colors[ 2 ] = colors2; + g.colors[ 3 ] = colors3; + g.colors[ 4 ] = colors4; + g.colors[ 5 ] = colors5; + g.colors[ 6 ] = colors6; + g.colors[ 7 ] = colors7; + g.alphas[ 0 ] = alphas0; + g.alphas[ 1 ] = alphas1; + g.alphas[ 2 ] = alphas2; + g.alphas[ 3 ] = alphas3; + g.alphas[ 4 ] = alphas4; + g.alphas[ 5 ] = alphas5; + g.alphas[ 6 ] = alphas6; + g.alphas[ 7 ] = alphas7; + return g; + } + + float4 SampleGradient( Gradient gradient, float time ) + { + float3 color = gradient.colors[ 0 ].rgb; + UNITY_UNROLL + for( int c = 1; c < 8; c++ ) + { + float colorPos = saturate( ( time - gradient.colors[ c - 1 ].w ) / ( gradient.colors[ c ].w - gradient.colors[ c - 1 ].w ) ) * step( c, (float)gradient.colorsLength - 1 ); + color = lerp( color, gradient.colors[ c ].rgb, lerp( colorPos, step( 0.01, colorPos ), gradient.type ) ); + } + #ifndef UNITY_COLORSPACE_GAMMA + color = GammaToLinearSpace( color ); + #endif + float alpha = gradient.alphas[ 0 ].x; + UNITY_UNROLL + for( int a = 1; a < 8; a++ ) + { + float alphaPos = saturate( ( time - gradient.alphas[ a - 1 ].y ) / ( gradient.alphas[ a ].y - gradient.alphas[ a - 1 ].y ) ) * step( a, (float)gradient.alphasLength - 1 ); + alpha = lerp( alpha, gradient.alphas[ a ].x, lerp( alphaPos, step( 0.01, alphaPos ), gradient.type ) ); + } + return float4( color, alpha ); + } + + float4 frag( v2f_img i ) : SV_Target + { + Gradient gradient = NewGradient( _GType, _GColorNum, _GAlphaNum, _Col0, _Col1, _Col2, _Col3, _Col4, _Col5, _Col6, _Col7, _Alp0.xy, _Alp1.xy, _Alp2.xy, _Alp3.xy, _Alp4.xy, _Alp5.xy, _Alp6.xy, _Alp7.xy ); + float time = tex2D( _GTime, i.uv ).r; + return SampleGradient( gradient, time ); + } + ENDCG + } + } +} |