| // Reduced set of intrinsics that are available to public SkSL (RuntimeEffect and Interpreter) |
| |
| // See "The OpenGL ES Shading Language, Version 1.00, Section 8" |
| |
| // 8.1 : Angle and Trigonometry Functions |
| $genType radians($genType degrees); |
| $genHType radians($genHType degrees); |
| $genType degrees($genType radians); |
| $genHType degrees($genHType radians); |
| |
| $genType sin($genType angle); |
| $genHType sin($genHType angle); |
| $genType cos($genType angle); |
| $genHType cos($genHType angle); |
| $genType tan($genType angle); |
| $genHType tan($genHType angle); |
| |
| $genType asin($genType x); |
| $genHType asin($genHType x); |
| $genType acos($genType x); |
| $genHType acos($genHType x); |
| $genType atan($genType y, $genType x); |
| $genHType atan($genHType y, $genHType x); |
| $genType atan($genType y_over_x); |
| $genHType atan($genHType y_over_x); |
| |
| // 8.2 : Exponential Functions |
| $genType pow($genType x, $genType y); |
| $genHType pow($genHType x, $genHType y); |
| $genType exp($genType x); |
| $genHType exp($genHType x); |
| $genType log($genType x); |
| $genHType log($genHType x); |
| $genType exp2($genType x); |
| $genHType exp2($genHType x); |
| $genType log2($genType x); |
| $genHType log2($genHType x); |
| |
| $genType sqrt($genType x); |
| $genHType sqrt($genHType x); |
| $genType inversesqrt($genType x); |
| $genHType inversesqrt($genHType x); |
| |
| // 8.3 : Common Functions |
| $genType abs($genType x); |
| $genHType abs($genHType x); |
| $genType sign($genType x); |
| $genHType sign($genHType x); |
| $genType floor($genType x); |
| $genHType floor($genHType x); |
| $genType ceil($genType x); |
| $genHType ceil($genHType x); |
| $genType fract($genType x); |
| $genHType fract($genHType x); |
| $genType mod($genType x, float y); |
| $genType mod($genType x, $genType y); |
| $genHType mod($genHType x, half y); |
| $genHType mod($genHType x, $genHType y); |
| |
| $genType min($genType x, $genType y); |
| $genType min($genType x, float y); |
| $genHType min($genHType x, $genHType y); |
| $genHType min($genHType x, half y); |
| $genType max($genType x, $genType y); |
| $genType max($genType x, float y); |
| $genHType max($genHType x, $genHType y); |
| $genHType max($genHType x, half y); |
| $genType clamp($genType x, $genType minVal, $genType maxVal); |
| $genType clamp($genType x, float minVal, float maxVal); |
| $genHType clamp($genHType x, $genHType minVal, $genHType maxVal); |
| $genHType clamp($genHType x, half minVal, half maxVal); |
| $genType saturate($genType x); // SkSL extension |
| $genHType saturate($genHType x); // SkSL extension |
| $genType mix($genType x, $genType y, $genType a); |
| $genType mix($genType x, $genType y, float a); |
| $genHType mix($genHType x, $genHType y, $genHType a); |
| $genHType mix($genHType x, $genHType y, half a); |
| $genType step($genType edge, $genType x); |
| $genType step(float edge, $genType x); |
| $genHType step($genHType edge, $genHType x); |
| $genHType step(half edge, $genHType x); |
| $genType smoothstep($genType edge0, $genType edge1, $genType x); |
| $genType smoothstep(float edge0, float edge1, $genType x); |
| $genHType smoothstep($genHType edge0, $genHType edge1, $genHType x); |
| $genHType smoothstep(half edge0, half edge1, $genHType x); |
| |
| // 8.4 : Geometric Functions |
| float length($genType x); |
| half length($genHType x); |
| float distance($genType p0, $genType p1); |
| half distance($genHType p0, $genHType p1); |
| float dot($genType x, $genType y); |
| half dot($genHType x, $genHType y); |
| float3 cross(float3 x, float3 y); |
| half3 cross(half3 x, half3 y); |
| $genType normalize($genType x); |
| $genHType normalize($genHType x); |
| $genType faceforward($genType N, $genType I, $genType Nref); |
| $genHType faceforward($genHType N, $genHType I, $genHType Nref); |
| $genType reflect($genType I, $genType N); |
| $genHType reflect($genHType I, $genHType N); |
| $genType refract($genType I, $genType N, float eta); |
| $genHType refract($genHType I, $genHType N, float eta); |
| |
| // 8.5 : Matrix Functions |
| $squareMat matrixCompMult($squareMat x, $squareMat y); |
| $squareHMat matrixCompMult($squareHMat x, $squareHMat y); |
| |
| // Not supported until GLSL 1.40. Poly-filled by SkSL: |
| $squareMat inverse($squareMat m); |
| $squareHMat inverse($squareHMat m); |
| |
| // 8.6 : Vector Relational Functions |
| $bvec lessThan($vec x, $vec y); |
| $bvec lessThan($hvec x, $hvec y); |
| $bvec lessThan($ivec x, $ivec y); |
| $bvec lessThanEqual($vec x, $vec y); |
| $bvec lessThanEqual($hvec x, $hvec y); |
| $bvec lessThanEqual($ivec x, $ivec y); |
| $bvec greaterThan($vec x, $vec y); |
| $bvec greaterThan($hvec x, $hvec y); |
| $bvec greaterThan($ivec x, $ivec y); |
| $bvec greaterThanEqual($vec x, $vec y); |
| $bvec greaterThanEqual($hvec x, $hvec y); |
| $bvec greaterThanEqual($ivec x, $ivec y); |
| $bvec equal($vec x, $vec y); |
| $bvec equal($hvec x, $hvec y); |
| $bvec equal($ivec x, $ivec y); |
| $bvec equal($bvec x, $bvec y); |
| $bvec notEqual($vec x, $vec y); |
| $bvec notEqual($hvec x, $hvec y); |
| $bvec notEqual($ivec x, $ivec y); |
| $bvec notEqual($bvec x, $bvec y); |
| |
| bool any($bvec x); |
| bool all($bvec x); |
| $bvec not($bvec x); |
| |
| // Miscellaneous SkSL intrinsics that are not part of GLSL: |
| |
| // The max() guards against division by zero when the incoming color is transparent black |
| half4 unpremul (half4 color) { return half4 (color.rgb / max(color.a, 0.0001), color.a); } |
| float4 unpremul_float(float4 color) { return float4(color.rgb / max(color.a, 0.0001), color.a); } |