The Sinclair QL Forum

It seems that SMSQ/E is not defining the colour correctly.
The color is defined as colour, contrast, stipple - in this example (see attached image) the background colour is defined as PAPER 5,4,3
It seems that SMSQ/E is reversing the colour and contrast, so on SMSQ/E systems the paper is actually 4,5,3!!
Look at the top left pixel - on SMSQ/E is Green, on QDOS is cyan
This issue is visible when running QSTAR on the same real QL in QDOS and then in SMSQ/E

This makes loading perfectly aligned images on a stippled background impossible on both SMSQ/E and QDOS!

Do you see the same swapped colour effect in other stipple patterns?
Maybe SMSQ/E just uses a different 'chequerboard' stipple pattern, which would not effect the colour seen by the eye.

Martin_Head wrote: ↑Sun May 05, 2024 9:54 am Do you see the same swapped colour effect in other stipple patterns?
Maybe SMSQ/E just uses a different 'chequerboard' stipple pattern, which would not effect the colour seen by the eye.

Yes, I see the swapped colour effect in all stipple patterns.
I played with all stipple patterns in QEmulator, QPC, QL +QDOS and QL+SMSQE - took pictures of the screen output and zoomed in Photoshop. In SMSQE all stipple colours are reversed compared to QDOS.

Have you tried older versions of smsq/e as it is astounding that this has not been spotted before, the GD2 colour drivers have been around for at least 20 years and smsq/e itself longer?

Cheers

Artificer wrote: ↑Sun May 05, 2024 10:58 am Have you tried older versions of smsq/e as it is astounding that this has not been spotted before, the GD2 colour drivers have been around for at least 20 years and smsq/e itself longer?

Cheers

No, I have not tried older versions. I have installed SMSQE on my SGC QL only last year - and I use v3.39 (Now I see that there is a newer version, 3.40)
Well, maybe nobody spotted this because most people use the high colour mode and have no use for stipples. And I guess I might be the only crazy guy who tried to load a stippled image over a stippled background and tried to pixel-align it

The issue is much easier to spot when using stipple=2 (vertical bars)

Hi,

Could the problem be with QDOS having th Stipples in the wrong order and GD2 corrected the problem.

Artificer wrote: ↑Sun May 05, 2024 10:58 am Have you tried older versions of smsq/e as it is astounding that this has not been spotted before, the GD2 colour drivers have been around for at least 20 years and smsq/e itself longer?

See my entry on the STAR1 post.
I tested PAPER 5,4,3 with an older SMSQE v2.91 and the issue was already there.
The Basic border stipple starts off white (QDOS, Minerva) but black on SMSQE.

BSJR

Derek_Stewart wrote: ↑Sun May 05, 2024 2:08 pm Hi,

Could the problem be with QDOS having th Stipples in the wrong order and GD2 corrected the problem.

Could be. But in the end SMSQE should maintain compatibility with QDOS, not the other way round.

Hi,

The SMSQ/E writers seem to just change and us poor users have figure out what they have done.