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// Tests a scenario in Mesa with function inout parameters which only
// seems to appear when an assignment is done to an array element followed by
// an assignment to another element where the element is either assigned to
// itself or itself multiplied or divided by 1.
//
// The result is we end up with an assignment in the IR where the lhs and rhs
// are referencing the same variable. This ends up tripping an assert,
// presumably the assignment should just be detected and optimised out.
[require]
GLSL >= 1.20
[vertex shader]
#version 120
varying vec4 color;
void array_mod(inout int b[2])
{
b[0] = int(2);
b[1] = b[1] * int(1);
}
void main()
{
int a[2];
a[0] = int(1);
a[1] = int(2);
array_mod(a);
if (a[0] == int(2) && a[1] == int(2)) {
color = vec4(0, 1, 0, 1);
} else {
color = vec4(1, 0, 0, 1);
}
gl_Position = gl_Vertex;
}
[fragment shader]
#version 120
varying vec4 color;
void main()
{
gl_FragColor = color;
}
[test]
draw rect -1 -1 2 2
probe all rgb 0 1 0
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