[rlsw] Remove position attribute from sw_vertex_t

[Bigfoot71]

Just replace float coord[4] with float position[4] instead.

Until now the world position was being preserved, but the only real point would be if we ever add lighting as defined in OpenGL 1.1, and therefore also at the rlgl level, but that doesn't seem to be planned.

By the way, positions were interpolated during clipping, so this should produce a marginal gain at this stage.

[Bigfoot71]

I also just fixed a bug with swPopMatrix() along the way, I had noticed it with models_rlgl_solar_system

By the way, the push/pop functions could be easily simplified, but hey

[raysan5]

@Bigfoot71 thanks for the review!

By the way, the push/pop functions could be easily simplified, but hey

I imagine you mean on rlgl side, that system was implemented ~10 years ago and probably it can be improved

[Bigfoot71]

I imagine you mean on rlgl side, that system was implemented ~10 years ago and probably it can be improved

No I did mean rlsw, there's some duplication, but it works for now, so I'll avoid over-reviewing it.