skia2/tests/sksl/shared/Assignment.glsl
John Stiles 2654187396 Eliminate unused local variables during SkSL optimization.
This can eliminate const variables which have been completely folded
away, unnecessary synthetic variables created during codegen/inlining,
or code that simply didn't need to exist at all.

Change-Id: I37a65e455e6527a6a6c2f4dde918f48d84dc2638
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/383496
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
2021-03-16 17:22:53 +00:00

51 lines
969 B
GLSL

out vec4 sk_FragColor;
uniform vec4 colorGreen;
struct S {
float f;
float af[5];
vec4 h4;
vec4 ah4[5];
};
vec4 globalVar;
S globalStruct;
vec4 main() {
int i;
i = 0;
ivec4 i4;
i4 = ivec4(1, 2, 3, 4);
mat3 f3x3;
f3x3 = mat3(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0);
vec4 x;
x.w = 0.0;
x.yx = vec2(0.0);
int ai[1];
ai[0] = 0;
ivec4 ai4[1];
ai4[0] = ivec4(1, 2, 3, 4);
mat3 ah2x4[1];
ah2x4[0] = mat3(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0);
vec4 af4[1];
af4[0].x = 0.0;
af4[0].ywxz = vec4(1.0);
S s;
s.f = 0.0;
s.af[1] = 0.0;
s.h4.zxy = vec3(9.0);
s.ah4[2].yw = vec2(5.0);
globalVar = vec4(0.0);
globalStruct.f = 0.0;
float l;
l = 0.0;
ai[0] += ai4[0].x;
s.f = 1.0;
s.af[0] = 2.0;
s.h4 = vec4(1.0);
s.ah4[0] = vec4(2.0);
af4[0] *= ah2x4[0][0].x;
i4.y *= i;
x.y *= l;
s.f *= l;
return colorGreen;
}