Swap Help Needed Please???

BigDC

Here is what I am wanting to do, the basic idea is to create a colormap and a 2D sprite and perform a per-province palette-swap in the sprite's fragment shader based on the province's RGB value.

Conceptually, you'd keep two textures, a colormap texture, and a lookup texture. The colormap could be whatever size you want, but the lookup texture has to be of size 4096*4096.

Think about this in the use of Games such as Risk, Civ V, Heroes of Iron and many others. where irregular shapes gets selected and their color changed.

Could you please show me some sample code to do this, please? Thanks!

Megalomaniak

Hows your map look like? You should be able to use min() and max() to isolate a specific granular from a gradient and use it as a mask.

Say that your map texture is RGBA with the RGB for the diffuse/color of the map itself and the Alpha hold 0 to 255 so a total of 256 values of gradient. Each province can then be a different solid value of gray up to 256 provinces on your map. Or if you want more you can dedicate a whole texture of 4 channels for it.

Though I inclined to think that perhaps using MeshInstances / MultiMesh might perhaps be a better solution?

BigDC

Here is my map

Please help????

Megalomaniak

Right so you would have to use some extra logic for mixed channels.

Edit: Try using greater than and less than for picking a value for a mask I should have said in my previous post.