Jocelyn Falempe <jfalempe@xxxxxxxxxx> writes: > The bandwidth between system memory and VRAM is very limited > on G200. > So when using a 32bit framebuffer on system memory, convert it to 24bit > when copying the frame to the VRAM, this allows to go 33% faster. > Converting the format on the fly is negligible, even on low end CPU. > > small benchmark on my Dell T310: > 1280x1024 32bits: ~125ms to transfert a single frame. > 1280x1024 24bits: ~95ms > > Signed-off-by: Jocelyn Falempe <jfalempe@xxxxxxxxxx> > --- I assume that the alpha channel is unused on this display HW and is just exposed to user-space to make the DRM driver more compatible ? If so, probably has to be mentioned in the changelog but other than that: Reviewed-by: Javier Martinez Canillas <javierm@xxxxxxxxxx> -- Best regards, Javier Martinez Canillas Core Platforms Red Hat
