How is the fastest way to convert array to image canvas data?

[Milsa]

Try it:
invalidate - 55
not invalidate - 60

OpenGL is slower than previous. I do not understand it.

[User137]

The uploaded zip isn't using OpenGL though? Also i notice that the rendered area goes outside the form's right boundary. I get 64 with or without invalidate, but that's just my computer...

[Milsa]

It is previous code. OpenGL is without invalidate checkbox.

[skalogryz]

invalidate - 55
not invalidate - 60

This is because you're counting Timer events
The FPS counter needs to be placed at the actual painting code.

[Milsa]

Thank you all for your help.

Counting in FormPaint:
invalidate - 110 FPS
not invalidate 62 FPS

OpenGL code no changes.

Thank you all.

[skalogryz]

OpenGL code no changes.

That doesn't sound right.
OpenGL code also has "Idle" event added. So the "paint" should happen more often than "FormPaint"

Please count FPS for OpenGL at TForm1.OpenGLControl1Paint procedure.

... btw. if OpenGL shows a better FPS now, you could add the same on Idle event for Non-GL example.
In general, video intensive applications (such as games or video players) never use Timer Events to refresh the frame, instead they either paint as much as possible or on VSync signal.
(In the gl example I'm using "idle" to draw "as much as possible")

[reinerr]

I'm just wondering, the original poster is targeting an 8-bit system. Would such a system have hardware OpenGL support or will it be falling back to software rendering anyway?

[BigChimp]

I'm just wondering, the original poster is targeting an 8-bit system.

No he's not, he's emulating an 8 bit system:

(emulation of 8-bit computer).

[macjone]

fast enough?

I guess the truth is not about the fastest way of converting one image format to another, but about fastest way to render image. That's OpenGL for cross-platform.

Yes, and which one do you think is faster to render image, byte[] or stream? By the way, I do not know following link can offer some insight for you.

http://stackoverflow.com/questions/17352061/fastest-way-to-convert-image-to-byte-array

[skalogryz]

Yes, and which one do you think is faster to render image, byte[] or stream? By the way, I do not know following link can offer some insight for you.

http://stackoverflow.com/questions/17352061/fastest-way-to-convert-image-to-byte-array

it depends on the "stream". If stream is memory stream, then there won't be any difference.
If stream is a file stream, most likely byte[] is faster (since byte[] is in memory)