Seen new clouds code but to be it need some tweaks to work perfectly
1) use pointsprites to render impostors because they are quads (all cards
2) use FBO to reder-to-texture it gives us speedup.(all cards supports them)
3)use at least ARB vertex programs (will work on geforce3) to calculate
lighting and billboard transformations
4) use ARB fragment programs (will work on geforceFX) for hardware blending.
But clouds looks good to tweak them out :)
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