opengl-4vertex-buffervertex-attributes

OpenGL - Can I draw non-indexed when index-buffer is set for VAO?

I set up a VAO, binding vertex-buffers to it for vertex attributes, but also set index-buffer (With glVertexArrayElementBuffer). Does that restrict it so it only works with glDrawElements type of commands, or will it work with glDrawArrays too? (Using OpenGL4.5)

Solution

  • Does that restrict it so it only works with glDrawElements type of commands?

    No.

    You can still use non-indexed draw calls like glDrawArrays. The question is whether your vertex topology suits that. glDrawArrays is essentially equal to an indexed draw call with indices [0, 1, 2, 3, 4, 5, ...].