// In your CPP file: // ====================== float offset = 0.5f; ourShader.setFloat("xOffset", offset); // In your vertex shader: // ====================== #version 330 core layout (location = 0) in vec3 aPos; layout (location = 1) in vec3 aColor; out vec3 ourColor; uniform float xOffset; void main() { gl_Position = vec4(aPos.x + xOffset, aPos.y, aPos.z, 1.0); // add the xOffset to the x position of the vertex position ourColor = aColor; }