83 lines
1.8 KiB
C#
83 lines
1.8 KiB
C#
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using Godot;
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using System.Reflection;
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using System.Collections.Generic;
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namespace Rokojori
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{
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[Tool]
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[GlobalClass]
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public partial class VertexUVSource:UVSource
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{
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[Export]
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public VertexTransformSpace space;
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[Export]
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public VertexSwizzleType dimensions;
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[Export]
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public string sizeCustomName;
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[Export]
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public string centerCustomName;
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public override List<ShaderCode> GetUV( ShaderGenerationContext context, string target, int offsetIndex )
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{
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var size = sizeCustomName == null ? "vertexUVSourceSize" : sizeCustomName;
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var center = centerCustomName == null ? "vertexUVSourceCenter" : centerCustomName;
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var suffix = offsetIndex == 0 ? "" : ( "_" + ( offsetIndex + 1 ) );
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size += suffix;
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center += suffix;
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if ( ShaderPhase.Includes == context.phase )
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{
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return ShaderGenerationModule.IncludeUVLibrary();
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}
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else if ( ShaderPhase.Variables == context.phase )
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{
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var uniforms =
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@$"
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uniform vec2 {size};
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uniform vec2 {center};
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";
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return ShaderGenerationModule.ToCode( uniforms.Indent( "" ) );
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}
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if ( ShaderPhase.Vertex != context.phase )
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{
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return null;
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}
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var member = ( dimensions + "" ).ToLower();
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var vertex = "VERTEX";
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if ( VertexTransformSpace.World == space )
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{
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vertex = "localToWorld( VERTEX, MODEL_MATRIX )";
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}
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else if ( VertexTransformSpace.View == space )
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{
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vertex = "localToView( VERTEX, MODELVIEW_MATRIX )";
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}
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var code =
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@$"
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{{
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vec3 vertex = {vertex};
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{target} = mapUV( vertex.{member}, {size}, {center} );
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}}
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";
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return ShaderGenerationModule.ToCode( code.Indent( " ") );
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}
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}
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}
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