I remember looking a few times over the years for an alternative to Photoshop for editing images. I've tried using Gimp too, and that's also not quite sufficient. There are some problems that have only been solvable by breaking out into an asset compiling stage. For example, none of the graphics packages come with premultiplied alpha options, and none come boxed with previews of what the image will look like once it's been compressed for hardware. I've never come across a package that lets you modify the diffuse, specular, ambient and normal maps all at the same time with the same tools.
Is there an image manipulation package out there that can satisfy things like this, allow for textures that have more than just 4 channels, export with preview to final format, maybe even rendering them in some coherent way?
items on the wishlist include:
- batch conversion
- scriptable pixel shader/transform
- view diffuse+alpha over a background / allow alpha2coverage preview
- render depth mapping via height or normal map
- show mip-maps and allow editing them