OpenGL accumulation buffer is very slow, testing needed

[Max Brazhnikov]

I haven't tested new gnash yet, your test gives:

./without_accum
Seconds: 20.00, frames: 25021, FPS: 1251.017
./with_accum
Seconds: 20.00, frames: 5358, FPS: 267.890

FreeBSD 7.0-STABLE i386
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce 8600 GT/PCI/SSE2
OpenGL version string: 2.1.2 NVIDIA 169.12

Max