VDP opengl plugin version 1.0.1

This plugin implements the VDP1 and VDP2 processors. The VDP1 emulation is quite fast but misses some VDP1 features such as mesh transparency which is replaced by alpha blending.
VDP2 emulation is not very fast and lacks a LOT of VDP2 features. Rotation backgrounds are not emulated.

You can modify the rendering resolution through the option dialogbox. You can also activacte or desactivate bilinear filtering.
To speed up rendering VDP2 planes can be disabled separately.

Planes and sprites priority emulation is very very buggy, if you are an expert in this domain don't hesitate to contact me.

VDP2 scrolling function is buggy, sometimes planes are distorted. Reason is still unknown.

04/06/2003: VDP opengl plugin version 1.0.1**
	-Corrected a bug in color RAM address offset calculation, still incorrect in some cases
	-Corrected a bug in VDP2 cell mode (was causing a black zone on the border of planes)
	-priority function works better, still far from being perfect...
	-added an option to force sprite priority to 6, this makes kof97 and metalslug playable (and perheaps other non tested games), just try it if you don't see sprites.

27/05/2003: VDP opengl plugin version 1.0**
	-initial release

Fabien