Matrix Rain help (poor performance)

[RastHacker]

Hi, i learn my self to making winforms in c# with vs 2015 since my 15 yo.

And today for fun i wanna make a matrix rain with rasta colors but in winform not console application.I have finished but i've got poor performance, and maybe because i'm not very good to C# coding ;D, to explain what i've done, i just have to show you ;D

(show below post 3 ...)

thanks for all the comunity for helping ;D (not registered but using this forum since a while ^^)

 

[Skydiver]

A quick question before I log off, though.

Why are you trying to drive your two loop timers at different rates?

Also, did you read the documentation? The WinForms timer has a resolution of 55 milliseconds. Trying to drive one of your timers at less than that rate isn't really helping you much other than piling up tick events right behind each other.

Timer Class (System.Windows.Forms)

Implements a timer that raises an event at user-defined intervals. This timer is optimized for use in Windows Forms applications and must be used in a window.

learn.microsoft.com

 

[RastHacker]

A quick question before I log off, though.

Why are you trying to drive your two loop timers at different rates?

Also, did you read the documentation? The WinForms timer has a resolution of 55 milliseconds. Trying to drive one of your timers at less than that rate isn't really helping you much other than piling up tick events right behind each other.

Timer Class (System.Windows.Forms)

Implements a timer that raises an event at user-defined intervals. This timer is optimized for use in Windows Forms applications and must be used in a window.

learn.microsoft.com

Okay thanks for editing (and sorry), i've changed backgroundworker to async task with await, more smooth ~3% less CPU usage, change loop interval to 66ms for all 2. more smoother but same CPU usage.

I've searched more ways to draw large bitmap faster but didn't found more faster than DrawImageUnscaled. Maybe there is one ?

 

[Skydiver]

Not for actually drawing your bitmap, for drawing stuff into your bitmap:
- You will likely get some more speed if you cache your brushes and pens instead of creating them on the fly.
- Some of the floating point calculations you do are repeated. Perhaps also only compute those once and keep the values around?

I'm not sure if the GraphicsPath is really buying you anything.