What Makes A Good Submission/The Textures Resource

The Texture

The Texture Format

Textures should be submitted in the PNG format. This is due to the fact that it is a lossless format, so it never decreases the quality of the image. As well, GIF is another lossy format that is not accepted, as it loses colors and only supports 256 colors. However, there is only one other time that you may have to submit another format, which is the JPG format. When you have a game that has JPG textures, leave them in the JPG format. As JPG is a lossy format, converting them to PNG unnecessarily increases the image's file size, so it's best to leave it as JPG.

Texture Transparencies

If a texture has transparencies, you usually don't remove them, as doing so can make applying the transparencies more difficult. The only time where you may need to remove a transparency is if it obstructs the diffuse texture at all. Some game engines tend to use the alpha channel of a texture image as a specular map, so splitting the alpha channel off of the diffuse texture will provide both the diffuse and specularity maps properly.