GLSL parse error using interface blocks

OpenGL OpenGL: Basic Coding
1

Hi,

I have a very weired error with the following simple vertex and fragment shader:


#version 430 core

layout(location = 1) in vec4 offset;
layout(location = 2) in vec4 color;


out VS_OUT 
{
    vec4 col;
} vs_out;

void main(void)
{
    const vec4[3] vertices = vec4[3](
                                vec4(0.25f, 0.25f, 0.0f, 1.0f),
                                vec4(0.25f, -0.25f, 0.0f, 1.0f),
                                vec4(-0.25f, -0.25f, 0.0f, 1.0f)
                              );
    vs_out.col = color;
    gl_Position = vertices[gl_VertexID] + offset;
}




#version 430 core

out vec4 color;

in VS_OUT
{
    vec4 col;
} vs_in;


void main(void)
{
    color = vs_in.col;
}

With that combination I get a strange parse error (#132 Syntax error: “texID” parse error). But, when I change the interface block in der vertex shader (and only there) to the following (changing the brace style), then the program works:


out VS_OUT {
    vec4 col;
} vs_out;

What is my mistake?

(I’m using the c++ wrapper oglplus)

Vaniax