HI, about Win CE and better performance

[mentalthink]

Hi I stay making comparations between Gp2X wiz and my winCe mobile, and in wince, runs too much slower than wiz.
Any coincil for pull up the performance on WINCE, I read use polyvector is much better than drawsprite, my background are 2 images about 1200x240 pixels and 7 images about 480x240, ok don´t slow too much, about 48 FPS, but in WIZ run too much faster, and I think Wiz is minus powerful than my phone.

I try to put LIMIT fps -1, but I have the same result.

Thanks, for your reply and time.

Best regards,
Iván J.

[backslider]

Hi mentalthink,

Polyvector is much slower than drawsprite on my iPhone (first gen)... I don´t know the performance on winCE phones.

[mentalthink]

HI Backslider, thanks for your reply.

uhmm...  this you said me about polyvector confuseme, becuase I read in some threads what polyvector is much faster than drawsprite, perhaps is because is 1st Generation iPhone, but I don´t be sure about this.

Thanks, again for you reply.

Best regards,
Iván J.

[Kitty Hello]

WinCE uses the software rasterizer from the Wiz. However, the Wiz is usually a muc hmore powerfull device than the CE based ones.

[mentalthink]

Thanks Kitty, but the difference is bigger, so , in WIZ the game is about 130 FPS whit Limitfpt command put to -1, but in winCE only arrives to 60FPS, equal than windows, but in some parts of the game this speed down too much.

Whit Polyvector, I don´t boost the performance on winCE?¿, so I read in some trehads than Polyvector y much faster than drawsprite, I only read about iPhone, but I´m not sure if this works fine on WINCE.

Kind Regards,
Ivan J.

[Kitty Hello]

polyvector packs are faster on iPhone - and only iPhone (and Pandora - any OpenGL|ES device)

[ampos]

polyvector packs are faster on iPhone - and only iPhone (and Pandora - any OpenGL|ES device)

In my app I see no performance difference between moving around 300 sprites (5x5 pixels) using drawsprite or polyvector.

[Kitty Hello]

what device? 3GS or iphone 4?
I noticed that my iphone 4 is much faster than my 3G, but !!! with DDgui it was partially slower!
(I already tweaked DDgui to be a tad faster for the future, using the new PRINT commands e.g. and use the DRAWRECT function for the fillings. (As it is the default).

[ampos]

I have at home 3G, 3GS and 4.

4 can move at 60fps, 3GS drops to 40-50, and 3G falls miresably to 10-30. I have changed from drawsprite to plyvector and saw no difference, at least in 3G.

Will post later my code, to see where it can be improved, as in 3G it is real slow.

[Kitty Hello]

Did you use polyvector with "one" call to STARTPOLY?

[ampos]

Ni, one startpoly...poly...endpoly per sprite...

[Kitty Hello]

then it's the same as drawsprite, thus slow.

you must go:

startpoly texture, 2

foreach spritething
   polyvector
   polyvector
   polyvector
   polyvector
   polynewstrip
next
endpoly

[ampos]

I will try, thanks. Will post results later.

[ampos]

I have made a little program to test 3G performance...

I have to ways of painting snow (5x5 pixels, in a 5x60 anim)

Code (glbasic) Select Expand

IF dmode=0
STARTPOLY 1,2
FOR n = 0 TO BOUNDS(puntos[],0)-1
POLYVECTOR puntos[n].x,puntos[n].y,puntos[n].frame*5,puntos[n].color*5,RGB(255,255,255)
POLYVECTOR puntos[n].x,puntos[n].y+5,puntos[n].frame*5,(puntos[n].color*5)+5,RGB(255,255,255)
POLYVECTOR puntos[n].x+5,puntos[n].y+5,(puntos[n].frame*5)+5,(puntos[n].color*5)+5,RGB(255,255,255)
POLYVECTOR puntos[n].x+5,puntos[n].y,(puntos[n].frame*5)+5,puntos[n].color*5,RGB(255,255,255)
POLYNEWSTRIP
NEXT
ENDPOLY
ENDIF
IF dmode=1
FOR n = 0 TO BOUNDS(puntos[],0)-1
DRAWANIM 1,(puntos[n].color*5)+puntos[n].frame,puntos[n].x,puntos[n].y
NEXT
ENDIF


With 180 sprites, the polyvector mode is at 31 fps, and the drawsprite mode, at 50.

Also, the polyvector mode deformate my sprites. Note that my previous polymode did not deformate them:

Code (glbasic) Select Expand

FOR n = 0 TO BOUNDS(puntos[],0)-1
STARTPOLY 1,0
POLYVECTOR puntos[n].x,puntos[n].y,puntos[n].frame*5,puntos[n].color*5,RGB(255,255,255)
POLYVECTOR puntos[n].x,puntos[n].y+5,puntos[n].frame*5,(puntos[n].color*5)+5,RGB(255,255,255)
POLYVECTOR puntos[n].x+5,puntos[n].y+5,(puntos[n].frame*5)+5,(puntos[n].color*5)+5,RGB(255,255,255)
POLYVECTOR puntos[n].x+5,puntos[n].y,(puntos[n].frame*5)+5,puntos[n].color*5,RGB(255,255,255)
ENDPOLY
NEXT

[ampos]

Also I have noted that the framerates are not constant, varies between 20 and 50, with no sense.

Can it be this jerky related to constantly adding and removing elemtents to the sprite matrix? Will it be faster to define a matrix of... 300 elements, and just use it?