#version 150 core

layout (triangles) in;
layout (triangle_strip, max_vertices = 600) out;

in vec2 geomTexCoord[];
out vec2 fragTexCoord;

void main() {
    for(float x = 0; x < 10; x+=1) {
        for(float y = 0; y < 10; y+=1) {
            gl_Position = vec4(-1 + x/5 , -1 + y/5 , 0, 1);
            fragTexCoord = vec2(x/10, (y+1)/10 );
            EmitVertex();

            gl_Position = vec4(-1 + (x+1)/5 , -1 + y/5 , 0, 1);
            fragTexCoord = vec2((x+1)/10, (y+1)/10);
            EmitVertex();

            gl_Position = vec4(-1 + x/5 , -1 + (y+1)/5 , 0, 1);
            fragTexCoord = vec2(x/10, y/10);
            EmitVertex();
            EndPrimitive();



            gl_Position = vec4(-1 + (x+1)/5 , -1 + y/5 , 0, 1);
            fragTexCoord = vec2((x+1)/10, (y+1)/10);
            EmitVertex();

            gl_Position = vec4(-1 + (x+1)/5 , -1 + (y+1)/5 , 0, 1);
            fragTexCoord = vec2((x+1)/10, y/10 );
            EmitVertex();

            gl_Position = vec4(-1 + x/5 , -1 + (y+1)/5 , 0, 1);
            fragTexCoord = vec2(x/10, y/10);
            EmitVertex();
            EndPrimitive();
        }
    }
}