src/sksl/sksl_interp.sksl

// Certain useful GLSL intrinsics (or integer versions of those) that aren't in GLSL ES 1.00,
// but are supported by the ByteCode interpreter.

$genIType min($genIType x, $genIType y);
$genIType min($genIType x, int       y);
$genIType max($genIType x, $genIType y);
$genIType max($genIType x, int       y);
$genIType clamp($genIType x, $genIType minVal, $genIType maxVal);
$genIType clamp($genIType x, int       minVal, int       maxVal);

$genType  mix($genType  x, $genType  y, $genBType a);
$genHType mix($genHType x, $genHType y, $genBType a);
$genIType mix($genIType x, $genIType y, $genBType a);
$genBType mix($genBType x, $genBType y, $genBType a);