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# This tests unrolling of a loop with two exit point where the trip count
# of one of the exits is known and the other unknown (loop_count uniform).
#
# Here we test all possible outcomes for the loop and also add some
# unreachable code to make sure it is not accessible after unrolling.
[require]
GLSL >= 1.10
[vertex shader]
uniform int loop_count;
void main()
{
gl_Position = gl_Vertex;
vec4 colour = vec4(1.0, 1.0, 1.0, 1.0);
vec4 colour2 = vec4(0.0, 0.0, 0.0, 1.0);
for (int i = 0; i < loop_count; i++) {
if (i > 1) {
colour = vec4(1.0, 0.0, 0.0, 1.0);
}
if (i > 1) {
break;
}
colour = vec4(0.0, 1.0, 0.0, 1.0);
/* This should be unreachable */
if (i >= 2) {
colour2 = vec4(0.0, 1.0, 0.0, 1.0);
}
}
gl_FrontColor = colour + colour2;
}
[fragment shader]
void main()
{
gl_FragColor = gl_Color;
}
[test]
clear color 0.5 0.5 0.5 0.5
uniform int loop_count 4
draw rect -1 -1 2 2
probe all rgba 1.0 0.0 0.0 1.0
uniform int loop_count 3
draw rect -1 -1 2 2
probe all rgba 1.0 0.0 0.0 1.0
uniform int loop_count 2
draw rect -1 -1 2 2
probe all rgba 0.0 1.0 0.0 1.0
uniform int loop_count 1
draw rect -1 -1 2 2
probe all rgba 0.0 1.0 0.0 1.0
uniform int loop_count 0
draw rect -1 -1 2 2
probe all rgba 1.0 1.0 1.0 1.0
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