File: fs-swap-problem.shader_test

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[require]
GLSL >= 1.10

[fragment shader]
uniform bool f;

void main()
{
    gl_FragColor = vec4(1, 0, 0, 1);
    do {
        gl_FragColor.xy = gl_FragColor.yx;
    } while (f);
}

[test]
uniform int f 0

draw rect -1 -1 2 2
probe all rgba 0.0 1.0 0.0 1.0