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Asked: 2026-06-17T05:49:32+00:00

Im currently learning Open GL ES in order to build an iOS app. I

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Im currently learning Open GL ES in order to build an iOS app. I am trying to add a texture to my model with no success. I downloaded a sample project from

link

and have been examining it. the question I have is: When I run the project unchanged I get the following:

image with working texture

as you can see its a basic cube with a texture. I decided to change the .png file to a different image. but when I did I was met with:

image not rendering texture

I dont know why my .png file is not rendering to the cube?

heres my texture:
my texture

and the original:
original

Just to confirm Im getting no errors and I have made no change to the code.

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1 Answer

  1. Editorial Team

    For this particular tutorial you can fix your problem with a texture of square, power-of-two dimensions. The one you posted is 135x134, so you need to convert it to 128X128 or 256x256.

    See this post for a related discussion: iphone opengl es 2.0 non power of two

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