POLYVECTOR with color slow on iPad

[Dark Schneider]

If use POLYVECTOR with any color, it runs very slow on the iPad, it is curious because on an iPod 1G it runs fine. But they have different GPUs.

I say this because if you are planning to use POLYVECTORS to change colors of sprites and others (like fonts) take in mind this if you want to release it on iPad.

[blackway]

Nooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo       
I'm programming a game (universal binary) (Iphone,Ipad) and I'm using polyvectors with colors!!!!!   
I have a Ipod touch 3G and runs good, but I don't have a Ipad to test it....

Gernot, Can you help us about this problem?
Thanks!!!

[Slydog]

But how can you use POLYVECTORs without a colour attribute?  It isn't optional?

Code (glbasic) Select Expand

POLYVECTOR x%, y%, tx%, ty%, col%

To keep things fast, are you using POLYNEWSTRIP for each polygon that shares the same texture?
(as opposed to using a STARTPOLY command for EVERY poly?)

Or, does GLB on iPad create a new OpenGL draw call for every colour change maybe?  (it treats it as a different material?)

[MrTAToad]

May or may not be of interest : http://www.glbasic.com/forum/index.php?topic=5565.15

[Dark Schneider]

Yes I know, and when I use POLYVECTORS with no color it runs fine, but if I specify a color it runs slow, I say this because it runs slow only using it 8 times (to draw the select stage buttons) and runs very very slow.
But for drawing the game I use a tile based map using lot of POLYVECTORs without color and runs very good. So the color is the deep problem, not the POLYVECTORs.

[monono]

@Slydog: If you use white opengl has not to colorize the image.

[spicypixel]

I'm still with SlyDog here how can you use POLYVECTOR without the colour parameter, it isn't optional. Can you show the command you use which works but doesn't use the colour attribute please.

[Moebius]

It is 'optional' in that it defaults to white:

Code (glbasic) Select Expand

// Function descr. at bottom of IDE:
POLYVECTOR x#, y#, tx# = 0, ty# = 0, color% = RGB(255,255,255)

If you use white opengl has not to colorize the image.

[Kitty Hello]

Right. I check for 0xffffff or rGB(255,255,255) as a colour. If you use that, I disable glcolorPointer stuff. which makes drawing on OpenGL|ES a lot faster usually. Also we found out that some devices (Android) don't support the colouring at all.
For coloured lines, load a different texture with the colour set or use texture coordinates for the colour.
For fonts, try using MEM2SPRITE with a memory image that you modified on the fly to match the colour you want.

[spacefractal]

its would been nice if possible if a device support that feature, so we can use alternative drawing.

a slightly another bug in the same place is ALPHAMODE. if you set other number than 0, then its simply dont do any alpha at all, before you use a color sprite.....

is its the same issue for ANDROID if i use white color, but with alpha polys?

PS. Also when you use POLYVECTOR of course.

[Kitty Hello]

alphamode should work on iPad. Please make an example where it doesn't.