What`s wrong with my geometry shader?Cant be discern

OpenGL OpenGL: Basic Coding
1

my geom code ：

layout (points) in;
layout (triangle_strip, max_vertices = 5) out;

in VS_OUT {
    vec3 color;
} gs_in[];

out vec3 fColor;

void build_house(vec4 position)
{    
    fColor = gs_in[0].color; // gs_in[0] since there's only one input vertex
    gl_Position = position + vec4(-0.2, -0.2, 0.0, 0.0); // 1:bottom-left   
    EmitVertex();   
    gl_Position = position + vec4( 0.2, -0.2, 0.0, 0.0); // 2:bottom-right
    EmitVertex();
    gl_Position = position + vec4(-0.2,  0.2, 0.0, 0.0); // 3:top-left
    EmitVertex();
    gl_Position = position + vec4( 0.2,  0.2, 0.0, 0.0); // 4:top-right
    EmitVertex();
    gl_Position = position + vec4( 0.0,  0.4, 0.0, 0.0); // 5:top
    EmitVertex();
    EndPrimitive();
}

void main() {    
    build_house(gl_in[0].gl_Position);
}

my files name:
geometry_shadertest_gs.geom
and error message

图片
图片924×255 21.6 KB

I just want konw What reasons could be, Thanks for any respondent

2

If that is the totality of your shader, it is missing a #version declaration at the top of the shader. Without a proper declaration, the compiler assumes that it is GLSL 1.10, which doesn’t support any of the mechanisms for geometry shaders.

3

Oh,my mistake,i forgat copy the top line of my code, it is #version 330 core ，but it didnt work well actually，Could be other reasons？