Texture Map Rotattion

OpenGL
1

How do you rotate a texture map? Also how to minimize distortion?

2

Why rotating the texture map? Try rotation of texture coordinates on the texture map.

3

I don’t really see what this has to do with Windows specifically.

But, you can rotate the texture map in GL_TEXTURE matrix mode:
glMatrixMode(GL_TEXTURE);

And minimizing distortion has nothing to do with OpenGL or rotating textures.
That sounds like a UV mapping problem.

4

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