RGB Relative

Blitz3D Forums/Blitz3D Programming/RGB Relative

Neochrome

(Posted 2003) [#1]

my graphics is set to 16bit depth color, but i want to read the color in a imagebuffer will the PickColor return true colours?

jfk EO-11110

(Posted 2003) [#2]

I think Imagebuffers are handled as 32 Bit always, but I could be wrong. why not write a little Test App like

dim check(255)
setbuffer imagebuffer(img)
lockbuffer
for i=0 to 255
 rgb=(i shl 16) or (i shl 8) or i
 writepixelfast 0,0,i
 rgb2=readpixelfast(0,0)
 if rgb<>rgb2 then
  check(i)=1
 endif
next
unlockbuffer
setbuffer backbuffer()

for i=0 to 255
 if check(i)<>0
  print "color "+i+","+i+","+i+" was not delivering 24 Bits"
 endif
next

well, not tested :)