Masking in TileSheets

[thomasuster]

I'm building a game and we're pretty invested in TileSheets. We really need TileSheet masking.

I tried editing OpenGLContext.cpp using information from this stackoverflow post but was unable to get things working.
http://stackoverflow.com/questions/5097145/opengl-mask-with-multiple-textures

I don't care too much about the workflow, you guys will probably have the best understanding on what's most appropriate. I'd be okay with something as high level as...
drawTiles(graphics, tileData, flags | Tilesheet.IS_MASK);
where the first tile is treated as the mask and all remaining tiles are masked.

Or as low level as specifying the glBlendFuncSeparate xor glBlendFunc per tileData.

[willemrosenthal]

This would be insanely helpful. I've hit a mask wall repeatedly- Please add it!

[delahee]

you can use stencil buffer to do this

[thomasuster]

Hey @delahee . I googled "OpenFL stencil buffer" and got back OpenGL stuff. Stencil buffer isn't in OpenFL right?

[delahee]

hmmm let me look ... yes it has : https://github.com/openfl/openfl-native/blob/master/openfl/gl/GL.hx

the openfl is a pretty confusing name for googl levensthein so you might want to look in github code directly.

Good luck !