OpenGL Vertex Buffer doesn't draw anything in golang

Question

I tried to use this tutorial with Golang: http://www.opengl-tutorial.org/beginners-tutorials/tutorial-2-the-first-triangle/ The go-version opens the window and makes the bac

Answer 1

I had the same problem and I managed to fix it after looking at your post, so first of all thanks a lot.

I managed to display a triangle by using the work branch of banthar bindings with this call to AttribPointer:

vertexAttrib.AttribPointer(
        3,     // size
        gl.FLOAT, //type
        false, // normalized?
        0,     // stride
        nil) // array buffer offset

and by passing the size in bytes to BufferData.

[...]
data := []float32{0, 1, 0, -1, -1, 0, 1, -1, 0}
[...]
gl.BufferData(gl.ARRAY_BUFFER, len(data)*4, data, gl.STATIC_DRAW)
[...]

There is probably a better way to pass the right length.