Implement compile-time optimization for mix().
mix() has many overloads:
$genType mix($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);
$genType mix($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);
The top half were simple to implement via `evaluate_3_way_intrinsic`.
The bottom half--`x, y, $genBType`--required adding basic support into
`evaluate_n_way_intrinsic_of_type` for mixed argument types, since `x`
and `y` could be of any numeric type, but `a` is always boolean.
Fortunately, this didn't require major changes.
Change-Id: I015471f053c90d5a5c3ac67cc230d0f90950ff60
Bug: skia:12034
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/414443
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
2021-06-01 17:31:35 +00:00
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return ((((((((((((((((((((((((((((((mix(intGreen.x, intRed.x, false) == intGreen.x && mix(intGreen.xy, intRed.xy, bvec2(false)) == intGreen.xy) && mix(intGreen.xyz, intRed.xyz, bvec3(false)) == intGreen.xyz) && mix(intGreen, intRed, bvec4(false)) == intGreen) && mix(intGreen.x, intRed.x, true) == intRed.x) && mix(intGreen.xy, intRed.xy, bvec2(true)) == intRed.xy) && mix(intGreen.xyz, intRed.xyz, bvec3(true)) == intRed.xyz) && mix(intGreen, intRed, bvec4(true)) == intRed) && 0 == intGreen.x) && ivec2(0, 100) == intGreen.xy) && ivec3(0, 100, 0) == intGreen.xyz) && ivec4(0, 100, 0, 100) == intGreen) && 100 == intRed.x) && ivec2(100, 0) == intRed.xy) && ivec3(100, 0, 0) == intRed.xyz) && ivec4(100, 0, 0, 100) == intRed) && mix(colorGreen.x, colorRed.x, false) == colorGreen.x) && mix(colorGreen.xy, colorRed.xy, bvec2(false)) == colorGreen.xy) && mix(colorGreen.xyz, colorRed.xyz, bvec3(false)) == colorGreen.xyz) && mix(colorGreen, colorRed, bvec4(false)) == colorGreen) && mix(colorGreen.x, colorRed.x, true) == colorRed.x) && mix(colorGreen.xy, colorRed.xy, bvec2(true)) == colorRed.xy) && mix(colorGreen.xyz, colorRed.xyz, bvec3(true)) == colorRed.xyz) && mix(colorGreen, colorRed, bvec4(true)) == colorRed) && 0.0 == colorGreen.x) && vec2(0.0, 1.0) == colorGreen.xy) && vec3(0.0, 1.0, 0.0) == colorGreen.xyz) && vec4(0.0, 1.0, 0.0, 1.0) == colorGreen) && 1.0 == colorRed.x) && vec2(1.0, 0.0) == colorRed.xy) && vec3(1.0, 0.0, 0.0) == colorRed.xyz) && vec4(1.0, 0.0, 0.0, 1.0) == colorRed ? colorGreen : colorRed;
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