skia2/tests/sksl/intrinsics/Equal.glsl
John Stiles a5f1697d05 Optimize intrinsic vector comparisons of constants.
If every argument passed to lessThan/greaterThan/lessThanEqual/
greaterThanEqual/equal/notEqual() is a compile-time constant, we now
detect this and optimize away the function call entirely.

Change-Id: I3415d21be6ef51b38b682a792bd118fad51957f5
Bug: skia:10835
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/404776
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
2021-05-06 14:00:27 +00:00

17 lines
477 B
GLSL

out vec4 sk_FragColor;
uniform vec4 a;
uniform vec4 b;
uniform uvec2 c;
uniform uvec2 d;
uniform ivec3 e;
uniform ivec3 f;
void main() {
bvec4 expectTTFF = bvec4(true, true, false, false);
bvec4 expectFFTT = bvec4(false, false, true, true);
sk_FragColor.x = float(equal(a, b).x ? 1 : 0);
sk_FragColor.y = float(equal(c, d).y ? 1 : 0);
sk_FragColor.z = float(equal(e, f).z ? 1 : 0);
sk_FragColor.w = float(any(expectTTFF) || any(expectFFTT) ? 1 : 0);
}