1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
# 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 (conditional on uniform).
#
# Here we test that control flow nested inside the limiting terminator is
# correctly unrolled.
[require]
GLSL >= 1.10
[vertex shader]
uniform int a;
void main()
{
gl_Position = gl_Vertex;
vec4 colour = vec4(1.0, 0.0, 0.0, 1.0);
int i = 0;
int j = 0;
do {
i++;
j++;
if (i >= 3) {
if (i == 3) {
colour = vec4(0.0, 0.0, 1.0, 1.0);
j++; // we use this so the if doesn't get reduced to a series of bcsel
if (j != 5)
colour = vec4(1.0, 0.0, 0.0, 1.0);
} else {
colour = vec4(1.0, 0.0, 0.0, 1.0);
}
break;
} else {
if (i != 1) {
j++;
} else {
colour = vec4(0.0, 1.0, 0.0, 1.0);
}
}
} while (a == 1);
gl_FrontColor = colour;
}
[fragment shader]
void main()
{
gl_FragColor = gl_Color;
}
[test]
clear color 0.5 0.5 0.5 0.5
uniform int a 0
draw rect -1 -1 2 2
probe all rgba 0.0 1.0 0.0 1.0
uniform int a 1
draw rect -1 -1 2 2
probe all rgba 0.0 0.0 1.0 1.0
|
