koobas.hobune.stream
Can you use a texture atlas as a colorpicker?
I would like to use a multicolor texture like a colorpicker to set each object to a different color, by zooming and offsetting the texture to use a pixel of a different color for each object texture.
When i write:
cube.renderer.sharedMaterial.SetTextureScale ("_MainTex", Vector2(.001,.001)); cube.renderer.sharedMaterial.SetTextureOffset ("_MainTex", Vector2(seed*.43243,seed*.87547));
the set scale op batches ok and the set offset op breaks the batch process.
What do you mean with "breaks the batch process"? I probably would not do it with a texture; you're limiting yourself to the colors you have on the texture and you will have to use point filtering. Wouldn't a shader with configurable color or vertex colors be a more obvious choice?
Oh $$anonymous$$adDave, please Explain! i have made configurable multicolor shaders. Please explain how to use a different color for different intantiations of a mesh?
Save, Yes sorry i changed the lines alot of times, the second line makes the cubes always the same color, whereas writing it with .material. ins$$anonymous$$d of .shared$$anonymous$$aterial. its multicolors.
$$anonymous$$adDave, by breaking the batch process, i mean that if you add a line that does SetTextureOffset, the prefabs will all call seperate materials and not be batched any more. i tried mainTextureOffset, which can be used in shared$$anonymous$$aterial but can't change the texture offset of different instances. It seems there is now way to edit colors of batched models with a diffuse shader and with direct texture commands, it may be possible to shift the model's UV's when instantiated, and perhaps there is a GetPixel way??? and perhaps a VertexLit way also! try to color sharedmaterial and diffuse = no batching works.
Ok, I think I got you. If you need to render all cubes in just one draw (i.e. batched) the only option I see is giving each cube different geometry. You could use different UVs and a texture or different vertex colors. Texture offset is ultimately a shader parameter and different shader parameters per cube require separate draw calls. In real life (i.e. DirectX/OpenGL programming without Unity) you would use instancing (rendering with multiple vertex streams) to achieve something like that. But AFAIK you cannot make that happen with unity.
