skia2/tests/sksl/intrinsics/Atan.glsl
John Stiles e4ac484ac0 Implement compile-time optimization for atan().
This is one of the few compile-time constant functions with a variable
number of arguments, but it's otherwise pretty normal as intrinsics go.

$genType  atan($genType  y, $genType  x);
$genHType atan($genHType y, $genHType x);
$genType  atan($genType  y_over_x);
$genHType atan($genHType y_over_x);

Change-Id: Ie852e10f37d73d53f69e806550872bc015f802d6
Bug: skia:12034
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/413439
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2021-06-01 15:16:43 +00:00

11 lines
786 B
GLSL

out vec4 sk_FragColor;
uniform vec4 input;
uniform vec4 expected;
uniform vec4 colorGreen;
uniform vec4 colorRed;
vec4 main() {
const vec4 constVal2 = vec4(1.0);
return ((((((((((((((atan(input.x) == expected.x && atan(input.xy) == expected.xy) && atan(input.xyz) == expected.xyz) && atan(input) == expected) && 0.0 == expected.x) && vec2(0.0, 0.0) == expected.xy) && vec3(0.0, 0.0, 0.0) == expected.xyz) && vec4(0.0, 0.0, 0.0, 0.0) == expected) && atan(input.x, 1.0) == expected.x) && atan(input.xy, vec2(1.0)) == expected.xy) && atan(input.xyz, vec3(1.0)) == expected.xyz) && atan(input, constVal2) == expected) && 0.0 == expected.x) && vec2(0.0, 0.0) == expected.xy) && vec3(0.0, 0.0, 0.0) == expected.xyz) && vec4(0.0, 0.0, 0.0, 0.0) == expected ? colorGreen : colorRed;
}