Comparison between Kernal Draw line and VERA FX

[unartic]

Here is a speed comparison between the kernal function to draw a line (GRAPH_draw_line) and drawing lines using the VERA FX line draw helper.

Kernal version
Try It Now!

VERA FX version
Try It Now!


Downloads, including source

verafx.prg

(7.55 KiB) Downloaded 115 times

verafx.bas

(608 Bytes) Downloaded 94 times

kernal.prg

(6.84 KiB) Downloaded 115 times

kernal.bas

(610 Bytes) Downloaded 84 times

note: source code is for my new basic compiler, just as a reference.

[desertfish]

"Where sauce" (of that vera fx line draw routine)

I still haven't puzzled out how to do the line drawing helper in verafx myself. I find it a tough one to crack.

[unartic]

I might post a YouTube video about the process and everything that needs to be done and how it works.

[mortarm]

The VERA version is faster, but it leaves artifacts around the screen.

[unartic]

The VERA version is faster, but it leaves artifacts around the screen.

Not realy an artifacts. It seems it doesn't plot every pixel in this demo. It could be just the fact that there is not enough precision.
If I draw lines with the kernal routine and verafx on top of each other, you see in many occasions that the moment they shift a pixel is not always the same between the two routines.

So I think this is 'normal' operation for VERA FX and doesn't make it any less useful