I am sure the flicker can be reduced. Sometimes the grayscale just updates too fast and needs to be updated less often. It's because of the crappy LCD driver

EDIT: Nevermind. The reason why the RPG demo is so slow compared to stuff like Half Life 2D or Portal X is because he redraws the entire tilemap every frame

really? Strange. I wonder why the Axe RPG demo framerate is so low then

Did I miss a Pause command somewhere or sometthing or does 4 lv grayscale really slow things down this much??

I just tried running the RPG with no grayscale and it seemed about twice faster. My guess is that HL2 probably used some cool optimizations to make it run this fast

I know. I was talking about the RPG map engine Quigibo included with Axe. It's considerably slower than HL2. That's what I was saying.

cool

aaah that explains the slow down

When testing I forgot to remove the additional sprites display commands

EDIT: THis is how fast it displays with no grayscale sprite storing

Huh, I guess I just really didn't go in depth when I tested it. I basically just removed the 1 or 2 commands that draws the grayscale, but what you guys are saying makes sense. I was pretty tired when I tried it out so I guess I wasn't thinking too much about it.

Also, you can run the grayscale like this if you want to have 15MHz as much as possible:

Code: [Select]

:Normal
:Dispgraph^r^r
:Full

Oh, never thought about it like that. I was just thinking that if you used grayscale you couldn't use full, but it looks like it's only for those commands. I'll be sure to keep that in mind when I jump into grayscale.

The normal and Full commands are negligible.  I think they're 10-20 clock cycles whereas the grayscale drawing is in the order of tens of thousands of clock cycles.  Also, all the drawing commands, both monochrome full speed, monochrome normal, 3-level grayscale, and 4-level grayscale take very close to the same amount of clock cycles since the LCD requires the same delay no matter what you're drawing.  The ones that are currently slower are fixed in the next version.  The only real slowdowns are going to be from drawing the sprites.