I created a cube and UV-mapped a texture onto it by simply resetting the UV-mapping (so that the whole texture is mapped onto each face of the cube). Then I shrunk the upper half of the cube, resulting in a three-dimensional trapezoid. For some reason, the texture does not shrink accordingly, but is severely distorted (see picture and blend file), just like in old video games that used texture mapping without perspective correction (those were the days…).
I would like the texture to be shrunk alongside the cube. Did I do something wrong? Is this a bug in Blender?
DistortedTexture.blend (27.7 KB)