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# Check that when computing the number of iterations executed by
# nested loops, loop analysis doesn't assume that an increment in the
# inner loop executes once per invocation of the outer loop.
[require]
GLSL >= 1.10
[vertex shader]
attribute vec4 piglit_vertex;
varying vec4 color;
void main()
{
int num_total_iterations = 0;
int i = 0;
while (i < 6) { // Executes twice, since inner loop increments i each time through
for (int j = 0; j < 3; j++) { // Executes 3 times
num_total_iterations++;
i++;
}
}
gl_Position = piglit_vertex;
if (num_total_iterations == 6)
color = vec4(0.0, 1.0, 0.0, 1.0);
else
color = vec4(1.0, 0.0, 0.0, 1.0);
}
[fragment shader]
varying vec4 color;
void main()
{
gl_FragColor = color;
}
[test]
draw rect -1 -1 2 2
probe all rgba 0 1 0 1
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