Alternative of BestCModeIDTagList()

[Honitos]

Currently, the screens.include which ist part of AmiBlitz3 uses the function BestCModeIDTagList() to find best matching screenmode given height,width and depth parameters.


As there is no native support for GFX-cards there is no os-function that does the same.


Nevertheless, does someone know any alternatives to get rid of the cybergraphics.library only for that call?

[thomas]

BestModeID does indeed the same. I never used the function you mentioned.

[Honitos]

Thanks Thomas for the hint.
I will change the include-function to use that function in case the program detects workbench V39. In the other case, it will try to use the function out of cybergraphics.library.

Interesting is that both functions return different modeIDs with the same parameters.
Example:

scr_width = 800
scr_height = 600
scr_depth = 8

BestCModeIDTagList returns screenmodeid $50041000
BestModeIDA() returns screenmodeid $50031000

Unfortunately I am not informed about the screenmodeflags behind that IDs...
Do you know the difference between the returned IDs?

[thomas]

Originally Posted by Honitos

I will change the include-function to use that function in case the program detects workbench V39. In the other case, it will try to use the function out of cybergraphics.library.

That makes no sense. CGX requires WB 3.0, too.

Unfortunately I am not informed about the screenmodeflags behind that IDs...

They are RTG modes. The values have different meanings on different machines. You have to check with GetDisplayInfoData what they actually mean.

[Honitos]

Originally Posted by thomas

That makes no sense. CGX requires WB 3.0, too.

Oh, in this case... you are right. I'll just replace the function calls.
Thanks again.