Framebuffer functionality chart (was Re: [Linux-fbdev-users] Project update, new website)

"Antonino A. Daplas" wrote:

On Friday 20 August 2004 23:31, Otto Wyss wrote:

quoted

I intend to change the status page into a functionality chart. First I
have to know which functionality exists and are important enough to be
listed. Any imput is welcomed.

Suggestion:

A.  Common to all:

Hardware:
1. color depths and color visuals supported
2. can the driver pan on the y-axis?
3. can the driver pan on the x-axis?
4. can the hardware state be changed (ie with fbset)?
5. access to framebuffer (fb_read/fb_write/mmap)
6. access to MMIO space

Console:
1. can it accelerate imageblit (font drawing)
2. can it accelerate copyarea (block transfers)
3. can it accelerate fillrect (block sets)

Video Mode setting:
1. How is the video mode set (more than 1 can be chosen)?
        a. at driver load
        b. user-specified modelines (ie. fbset)
        c. global mode database
        d. EDID/private mode database
        e. EDID/GTF calculation
        f. driver-specific method

B. Miscellaneous:
        a. support for interrupts on vsync/vblank
        b. ioctl for vsync/vblank

Comments from other developers? Can these points be divided into two
groups ("essential" for minimal functionality and "advanced" for speed
improvements, nice to have features?

O. Wyss

-- 
See a huge pile of work at "http://wyodesktop.sourceforge.net/"


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Otto Wyss wrote:

"Antonino A. Daplas" wrote:

quoted

On Friday 20 August 2004 23:31, Otto Wyss wrote:

quoted

I intend to change the status page into a functionality chart. First I
have to know which functionality exists and are important enough to be
listed. Any imput is welcomed.

Suggestion:

A.  Common to all:

Hardware:
1. color depths and color visuals supported
2. can the driver pan on the y-axis?
3. can the driver pan on the x-axis?
4. can the hardware state be changed (ie with fbset)?
5. access to framebuffer (fb_read/fb_write/mmap)
6. access to MMIO space

Console:
1. can it accelerate imageblit (font drawing)
2. can it accelerate copyarea (block transfers)
3. can it accelerate fillrect (block sets)

Video Mode setting:
1. How is the video mode set (more than 1 can be chosen)?
        a. at driver load
        b. user-specified modelines (ie. fbset)
        c. global mode database
        d. EDID/private mode database
        e. EDID/GTF calculation
        f. driver-specific method

B. Miscellaneous:
        a. support for interrupts on vsync/vblank
        b. ioctl for vsync/vblank

Well then is it possible to check all these features with a test
program? Does anyone know how?

O. Wyss

-- 
See a huge pile of work at "http://wyodesktop.sourceforge.net/"


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