Messages in this thread | | | Date | Tue, 13 May 2003 02:34:27 +0200 | From | Petr Vandrovec <> | Subject | Re: [BK FBDEV] String drawing optimizations. |
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On Tue, May 13, 2003 at 01:02:40AM +0100, James Simmons wrote: > > Please test. The pixmap code in the framebuffer layer was designed to > align the font data. For some hardware it is required that each scanline > end on a byte boundary but for some it was to be 32 bit aligned. So the > solution was to take the image data and padded it to what the hardware > needs. At present it does this by coping on byte at a time. This is just > plain awful. So this patch copies data a whole scanline at a time. It is > a big performance boost. Please test before I send it to Linus. Thank > you.
What about getting rid of one-char putc, implementing it in terms of putcs? I'm doing it in matroxfb patches, and nobody complained yet, and with current length of {fbcon,accel}_putc{s,} I was not able to find measurable speed difference between putc and putc through putcs variants. Thanks, Petr Vandrovec vandrove@vc.cvut.cz
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