scummvm-cursorfix/engines/wintermute/base/gfx/opengl/shaders/wme_line.fragment

in vec4 Color;

uniform float alphaRef;
uniform UBOOL alphaTest;

OUTPUT

void main() {
	outColor = Color;

	if (UBOOL_TEST(alphaTest) && outColor.a < alphaRef) {
		discard;
	}
}