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# This tests unrolling of a loop with a single exit point.
#
# Here we test that control flow nested inside the limiting terminator is
# correctly unrolled.
[require]
GLSL >= 1.10
[vertex shader]
void main()
{
gl_Position = gl_Vertex;
vec4 colour = vec4(1.0, 0.0, 0.0, 1.0);
int i = 0;
int j = 0; // we use this so the if doesn't get reduced to a series of bcsel
do {
i++;
j++;
if (i >= 3) {
if (i == 3) {
colour = vec4(0.0, 1.0, 0.0, 1.0);
j++;
if (j != 6)
colour = vec4(1.0, 0.0, 1.0, 1.0);
} else {
colour = vec4(1.0, 1.0, 0.0, 1.0);
}
break;
} else {
if (i != 1) {
j++;
}
}
if (i >= 5) {
j++; // unreachable
break;
} else {
if (i != 1) {
j++;
}
}
} while (i < 4);
gl_FrontColor = colour;
}
[fragment shader]
void main()
{
gl_FragColor = gl_Color;
}
[test]
clear color 0.5 0.5 0.5 0.5
draw rect -1 -1 2 2
probe all rgba 0.0 1.0 0.0 1.0
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