| // defines built-in interfaces supported by SkiaSL fragment shaders | 
 |  | 
 | // See "enum SpvBuiltIn_" in ./spirv.h | 
 | layout(builtin=15) in float4 sk_FragCoord; | 
 | layout(builtin=17) in bool sk_Clockwise;  // Similar to gl_FrontFacing, but defined in device space. | 
 |  | 
 | // 9999 is a sentinel value that causes us to ignore these declarations, beyond adding them to the | 
 | // symbol table. | 
 | layout(builtin=9999) out half4 gl_SecondaryFragColorEXT; | 
 |  | 
 | layout(location=0,index=0,builtin=10001) out half4 sk_FragColor; | 
 | layout(builtin=10008) half4 sk_LastFragColor; |