Question about the code that might be important to beginners

[ColinGilbert]

Hi,

On line

learn-wgpu/code/intermediate/tutorial12-camera/src/resources.rs

Line 111 in f241ba6

tex_coords: [m.mesh.texcoords[i * 2], 1.0 - m.mesh.texcoords[i * 2 + 1]],

The code tex_coords: [m.mesh.texcoords[i * 2], 1.0 - m.mesh.texcoords[i * 2 + 1]], substracts the second UV coordinate from 1.0 instead of loading it from the file unchanged.

Why do you do this when loading a 3D model? Is there something specific to WGPU that we should know?

Thanks for your time.

[sotrh]

In wgpu texture coordinates have (0,0) at the top left while opengl has the origin in the bottom left. If the model was designed for OpenGL, you'll need to flip the V coordinate. We should change this function to take boolean whether to flip the texture coord.