unplugged-system/external/skia/tests/sksl/shared/SwizzleAsLValue.glsl

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out vec4 sk_FragColor;
uniform vec4 colorGreen;
uniform vec4 colorRed;
vec4 main() {
vec4 color;
color = colorGreen * 0.5;
color.w = 2.0;
color.y *= 4.0;
color.yzw *= vec3(0.5);
color.zywx += vec4(0.25, 0.0, 0.0, 0.75);
color.x += color.w <= 1.0 ? color.z : 0.0;
return color == vec4(1.0, 1.0, 0.25, 1.0) ? colorGreen : colorRed;
}