🔒 Locked

DevIL textures upside down

Started by eXXXile Mar 20, 2005 at 5:50 PM 3 replies 900+ views

Original Post

Mar 20, 2005 at 5:50 PM

hi, I just tried to use DevIL to load my textures. Everything ok but the textures are upside-down for any image format... Im sure the texture mapping is correct. Does anyone know if this is normal and how can I correct it (except of reversing the y tex coords or inverting the image file). Is there a setting or something? Or is there a better image loading lib?

CRACK123

Mar 20, 2005 at 8:44 PM

Hi,

Its working correctly. DevIL textures are correct. Textures in opengl - 0, 0 is top left and 1, 1 is bottom right.

dotproduct

Mar 20, 2005 at 8:57 PM

Quote:
Original post by CRACK123
Hi,

Its working correctly. DevIL textures are correct. Textures in opengl - 0, 0 is top left and 1, 1 is bottom right.

No... textures in opengl: 0,0 - lower left, 1,1 - upper right.

Just flip the textures with Devil before sending to opengl..

Shai

Mar 21, 2005 at 6:21 AM

Just use (0, 0) as top left, (1, 0) as top right,...
It's normal for several image formats to be displayed upside down due to the way image data is stored inside the format, a BMP however should be loaded normally.

eXXXile

Author

eXXXile

Mar 21, 2005 at 7:24 PM

well, i found the problem

if you look at this
http://sourceforge.net/forum/forum.php?thread_id=1228834&forum_id=13560
you will see that the last DevIL version has a little..... trouble with that.

Anyway, it seems that the solution is calling iluFlipImage just before calling glTexImage2D...... thank you all

Topic Locked

This topic has been locked by a moderator. New replies are not allowed.