"set object transparency" doesn't work again...

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n3t3r453r

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Joined: 8th Nov 2002

Location: Russia

Posted: 31st May 2003 01:29

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Transparency doesn't work in this code:

+ Code Snippet

set display mode 1024,768,32
sync on
sync rate 0

set image colorkey 0,0,0

load object "..",1 ; ` the texture'll be loaded internaly
set object transparency 1,1 ;` or 2 anyway doesn't works :(
do

   position mouse 512,384

   cx#=wrapvalue(cx#+mousemovey())
   cy#=wrapvalue(cy#+mousemovex())
   cz#=wrapvalue(cz#+mousemovez())
   rotate camera cx#,cy#,cz#

   if upkey()=1 then move camera 2
   if downkey()=1 then move camera -2

   sync
loop

Why? And when it will be fixed? Or I haven't understood something?

I'd like to change the world, but God doesn't want to give me sources!

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Kensupen

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Joined: 19th Sep 2002

Location: United States

Posted: 31st May 2003 01:43

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You need to check your texture(s) for the object. I'm using colorkey 255,0,255 and all my objects work fine with set object transparency obj,2
The pixels have to be exactly rgb(0,0,0) or they will draw. So, you have to have the textures as a .BMP

-Kensupen

Nerdsoft Creations - Lead Programmer
System Specs: AMD XP 1700+, WinXP Home, 1GB PC133 ram and Radeon 9500 using DX9

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n3t3r453r

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Location: Russia

Posted: 31st May 2003 09:53 Edited at: 31st May 2003 09:54

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BMP? Why? I'm using TARGA or PNG and all works fine on p4, but on p4.1 it doesn't work at all!

I'd like to change the world, but God doesn't want to give me sources!

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Kensupen

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Posted: 31st May 2003 12:12

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Do this. Load your textures in Paint shop or a similar program. Use the color picker to find the RGB values of your "black" that is supposed to be transparent. It's it's not exactly rgb(0,0,0) then it won't be transparent. Only DBC has a tolerance level when it comes to transparency color, DBPro does not.

-Kensupen

Nerdsoft Creations - Lead Programmer
System Specs: AMD XP 1700+, WinXP Home, 1GB PC133 ram and Radeon 9500 using DX9

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n3t3r453r

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Joined: 8th Nov 2002

Location: Russia

Posted: 31st May 2003 14:16

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No,no,no... I've said it worked fine on DBPro v4.0, but it doesn't works on v4.1

And I'm sure that transparent color is exacly RGB(0,0,0): I've checked it in photoshop7.

I'd like to change the world, but God doesn't want to give me sources!

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IanM

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Joined: 11th Sep 2002

Location: In my moon base

Posted: 31st May 2003 14:36

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Transparency on targa and png format files are controlled *only* by the alpha settings within the files.

Convert the black pixels to true alpha and they'll work ... or run this function for each image to generate alpha information (0,0,0 is transparent, only works for 32bit images).

+ Code Snippet

function MakeAlpha(img)
   make memblock from image 1, img
   Size=memblock dword(1,0)*memblock dword(1,4)

   for i=0 to Size-1
      Addr=i*4+12

      if memblock byte(1, Addr+0) <> 0 or memblock byte(1, Addr+1) <> 0 or memblock byte(1, Addr+2) <> 0
         write memblock byte 1, Addr+3, 255
      else
         write memblock byte 1, Addr+3, 0
      endif

   next i

   make image from memblock img, 1
   delete memblock 1
endfunction

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n3t3r453r

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Location: Russia

Posted: 31st May 2003 18:35

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Thanks Ian, I think I should use DDS textures with true alpha in this case.

I'd like to change the world, but God doesn't want to give me sources!

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