skia2/tests/sksl/shared/NegatedVectorLiteral.glsl
John Stiles 98378352be Optimize splat constructors containing const vars.
A constructor like `float3(five)` is not a compile-time constant, so we
miss optimization opportunities like folding. Constant variables inside
splat constructors are now replaced when optimization is on, so this
would optimize down to `float3(5.0)` and be eligible for folding.

Change-Id: I4bf6f52a48ef733e6b24791d02687081194ef488
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/404676
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
2021-05-05 17:44:06 +00:00

25 lines
763 B
GLSL

out vec4 sk_FragColor;
uniform vec4 colorGreen;
uniform vec4 colorRed;
bool test_int_b() {
int one = 1;
const int two = 2;
ivec4 result;
result.x = 1;
result.y = 1;
result.z = 1;
result.w = int(-ivec2(-one, one + one) == -ivec2(one - two, 2) ? 1 : 0);
return bool(((result.x * result.y) * result.z) * result.w);
}
vec4 main() {
const float _0_one = 1.0;
float _1_two = 2.0;
vec4 _2_result;
_2_result.x = 1.0;
_2_result.y = 1.0;
_2_result.z = float(-vec4(_1_two) == vec4(-_1_two, vec3(-_1_two)) ? 1 : 0);
_2_result.w = float(vec2(1.0, -2.0) == -vec2(_0_one - _1_two, _1_two) ? 1 : 0);
return bool(((_2_result.x * _2_result.y) * _2_result.z) * _2_result.w) && test_int_b() ? colorGreen : colorRed;
}