Please suggest any max performance tricks you know of to render quickly on software gfx phones.

I have a n97, very slow 3d.
I am coding m3g and opengles c++.

I know of:

01. No lights
02. No blending
03. No normals
04. Fixed-point math
05. limit polys (duh)
06. near/far plane and fov
07. frustum culling
08. limit textures (duh)
09. mipmapping
10. no glClear color buffer
11. render in layers (e.g. no depth buffer for ground layer)
12. Texture rasterizer set to GL_NEAREST and GL_NEAREST_MIPMAP_NEAREST

Any more?