If you could send a screenshot and a brief explanation to that would give me more info on how-to :) Regarding transparent gaps, this may mean that either you have a texture missing (again, you usually need 4096X3072px for a cross UV to get 1024px each side), to sth is off with alpha channels in your textures. Of course, you'd need to import that mesh in game as well and apply the wanted material.Īlso, another possible trick in the sleeve - if you have a finished model and texture in your 3d program that works well, you can always set up the scene, flip the planet's normals, setup the camera in the center of the planet and render high res cube maps - that can render the planet textures from inwards (6 of them or an equirectangular one - whatever setup you use). You can for instance, model a finished planet sphere, and use a default sphere's UV and then 3d-paint the texture which is usually in 2X1 ratio to get the quality desired. Now, that's a cube cross UV way of doing stuff. Here's a useful link for a tutorial that will explain the concept behind a bit better, the UV, spherizing (subdividing a cube or spherizing it): That means, if you're planning each side to have a texture resolution of 1024px, you need a PSD file of 4096X3072px resolution (4X1024px horizontal, and 3X1024px vertical) to cover the cube all around with the same quality.Īlternatively, you can always cross Unwrap your cube (spherize later) and then use a 3d texturing tool to cover all the seams properly. If you look at a base cross UV (again, if you don't plan on stretching), you're supposed to have 6 sides, which means 4 horizontal (front, right, left, back) and 2 more (top and down). Now, I'm a bit surprised you're using a 4096X2048px texture, since that isn't supposed to be enough for all six sides, unless you're counting on some texture stretching. Cube cross UV gets the right proportions and quality for every of 6 materials needed. Well, the base of the planet (model) is actually a simple CROSS UV mapped CUBE, so it's quite simple to get the 6 textures right.
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