glslang/Test/spv.1.4.OpSelect.frag

38 lines
878 B
GLSL
Executable File

#version 450
struct S1 {
float a;
int b;
};
layout(location = 0) flat in S1 in1;
layout(location = 2) flat in S1 in2;
layout(location = 4) flat in int cond;
layout(location = 0) out float outv;
void fun1(){}
void fun2(){}
void main()
{
// glslang will only make OpSelect for very trivial looking expressions
float f1 = 1.0;
float f2 = 2.0;
outv = cond < 8 ? f1 : f2; // in all versions
ivec4 iv1 = ivec4(f1);
ivec4 iv2 = ivec4(f2);
outv *= (cond > 0 ? iv1 : iv2).z; // in all versions, but in 1.4 as scalar condition, not smeared ala mix()
mat3 m1 = mat3(1.0);
mat3 m2 = mat3(2.0);
outv *= (cond < 20 ? m1 : m2)[2][1]; // in 1.4, but not before
S1 fv = cond > 5 ? in1 : in2; // in 1.4, but not before
outv *= fv.a;
cond > 0 ? fun1() : fun2(); // not allowed by any version
}