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noodleBowl

UV Texture mapping?

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I was wondering if someone could clear up some confusion for me. Its simple really, what should my numbers look like for UV texture coords?

 

The reason I ask is that I am using libpng to load in my textures, but when I run my application the image is flipped upside down. I'm wondering if my texture coords are just mapped wrong or if its an other problem

 

Here is a visual of my issue

[attachment=29582:uvCoords.png]

 

Any ideas?

 

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Can you list your vertices? (x,y,z,u,v). I am kinda confused that still on the desktop y points downwards, but I think default in OpenGL is y up. Windows Bitmaps were drawn from bottom to top at the beginning I think.

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because opengls coords are:

 

bottom left is 0,0

 

top left is 0,1

 

top right is 1,1

 

and bottom right is 1,0

Edited by WiredCat

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because opengls coords are:
 
bottom left is 0,0
 
top left is 0,1
 
top right is 1,1
 
and bottom right is 1,0

 
Looks like I have been wrong for a very long time. Always thought that the 0,0 of a texture mapping would be the upper left hand corner. Edited by noodleBowl

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