Deano's 2009 Compo Blog

[Deano]

Kevin both images 'colour depth' is set at 24 bit....???

[kevin]

  Well, when you load an AFX image, then internally this image surface is 32bit regardless of the system display depth.  So it's uses  8bit A, 8 bit R, 8bit G, 8bit B (8888=32bit).   However, what you need to be aware of, is that if you draw  32bit surface to another surface depth (that isn't 32bit).  Such as the screen in this case, with is 16bit as per the open screen command.  Then the 32bit pixels are remapped to the whatever the destination surface format is.

  In 16bit there's two supported formats 15bit  (1555) ARGB (1bit alpha, 5 bits R, 5 bits,G,5 bits Blue) and the other is 16bit (565), which is Alpha=0, R=5 bits, Green = 6 bits, Blue = 5 bits.  

 Upon closer inspection,  you seem to want to draw blend two AFX images together and get an AFX result.  Only way to do this is manually, create the merge on a 32bit surface.    However, when you draw a AFX image over another surface the all channels blended together.   SO even if both surfaces are 32bit, the contents of the A channel are not reliable.  So you'd have to mask the original A channel back onto the new image.

 something like this

PlayBASIC Code: [Select]

global screenw=800
global screenh=600

   OpenScreen screenw,screenh,16,2

   
   loadafximage "tt.png",10
   loadafximage "face.png",11
   DRAWplayer(10)
   rendertoscreen
      Do
         cls rgb(128,233,255)
         for i= 1 to 4
            drawimage i,i+(80*i),200,1
            print getimagedepth(i)
         next 
          drawimage 10,300,300,1
          drawimage 11,300,300,1
          Sync
       loop 


Function DRAWplayer(IMG)   
   RotAngle#=0

   w=80
   h=80
   
   for II=1 to 4
      
      createfximageex ii,w,h,32
      rendertoimage ii
      drawimage 10,0,0,0   ; copy image to dest

      ; create rotated temp surface
      createfximageex 1000,w,h,32
      rendertoimage 1000

      CopyRect ii,0,0,w,h,1000,0,0
      ; strip the RGB channels and leave the A channel
      rgbmaskimage 1000,$ff000000

      rendertoimage ii

      ; blend it with the dest
      DrawRotatedImage 11,w/2,h/2,RotAngle#,1,1,w/-2,h/-2,1      

      ; merge the original alpha channel with the combined image      
      dim row(w)
      for ylp=0 to h-1
         rendertoimage 1000
         lockbuffer
            for xlp=0 to w-1
               row(xlp)=point(xlp,ylp)
            next
         unlockbuffer
         
         rendertoimage ii
         inkmode 1+512
         lockbuffer
         for xlp=0 to w-1
            dotc xlp,ylp,row(xlp)
         next
         unlockbuffer
      next
      prepareafximage ii

      inkmode 1
      RotAngle#=WrapAngle(RotAngle#,90)
   next
   rendertoscreen

Endfunction

   


 

[Deano]

Thanks kevin, that works great!  I've spent way to much time trying to figure that out(ask my wife ::))

[kevin]

I can imagine :). .  There really needs to be channel merge command of such situations.

[Deano]

 :-[ I'm out of the competition , my computer finally DIED. I'm trying to build a new one, with old parts, with very little progress. I'm writting this on my kids PS3. Good luck to all and I'll be back


Deano 8)Error Missing Closing Square Bracket

[micky4fun]

Hi Deano,

well no one here likes to here that your out of compo  :'(, bad news mate , hope you get a p.c made up as soon as you can and get the time to get game to an end version state , with all that work ile be a bit cheesed off now ,

well good luck with building an other p.c with your old parts , and see you back here very soon..

mick :)

[Deano]

Got my puter back up sort-of, got to run in safe mode and I somehow ruined my 3d video card.
I'm going to keep plugging away. I'm having a little trouble with mini-game ideas, I thought I grasped the concept until I saw the other entries. Oh well I'll keep working.

Deano

[BlinkOk]

woot! that's awesome. really looking forward to this one

[kevin]

I thought I grasped the concept until I saw the other entries.

   I wouldn't let your self get too influenced by the others here.  While there's a some nice screen shots/blogs tidbits, but i'm too sure how well they all fit the competition guidelines.    But we'll see I guess, that is assuming they get their entries finished.. 

[BlinkOk]

if an entry did not fit the guidelines i would hope that you would advise them of it.

[kevin]

  I'm referring to the scope.   Contestants are meant to run theme clarification though  Here 

[BlinkOk]

vague. if you suspect that someone is outside the guidelines in any way it would be in your interest to advise them.

[Deano]

well now I completely, totally out of the compo. My computer froze and now it won't respond AT ALL. What do you want with a 10 year old computer. Well thanks for your support and i'll be back sometime after christmas when I get a new computer.


Thanks Again
Deano

[LemonWizard]

That's depressing  :(