Can't initialize an array with a single element???

[hooyacrusty]

Hi,

why do I get a shader compile error when I try to put this code in my vertex shader:

vec3 lightColor[1] = vec3[](vec3(1,1,1));

but this works:

vec3 lightColor[2] = vec3[](vec3(1,1,1),vec3(1,1,1));

If GLSL doesn't allow me to initialize my single-element array this way, how can I do it?

Rob.

[LittlePootle]

Actually, this works for me.

But why would you want a single element array, why can't you just use a standard vec3?
vec3 lightColor = vec3(1,1,1);

[thokra]

why do I get a shader compile error

What vendor? What error? This should work:

When an array size is specified in a declaration, it must be an integral constant expression (see section 4.3.3 “Constant Expressions”) greater than zero.

This implies that single-element arrays are legal.

Also, does it change anything when you provide an explicit size on the right hand-side of the initialization

vec3 lightColor[1] = vec3[1](vec3(1,1,1));

or when you leave explicit size out of the state in general

vec3 lightColor[] = vec3[](vec3(1,1,1));

?