If you're willing to compile it, Aseprite is a great option as well.
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Tom Jacobs has recently released a new Substance Designer pack of a nice material with sharp rocks which can be found at train rails. Two single graphs in one pack for you to level up SD mastery.
Always wanted to create these dense stones, that can be found mostly at train rails. I was focussing here on how to create a sense of depth and layered stones. The graph is available at Gumroad. The overall difference in height is also done within SD. So, there is no deformed plane.
100% substance designer and rendered in Marmoset.
- Substance Designer graph of a typical Hard sharp rock field that can be found at train rails. Two single graphs.
- Texture sheets. (Height, Normal DX format, basecolor, roughness and AO.)
- Textures are tileable and 4K resolution each. All files are PNG.
- The package is presented as ZIP downloadable.