Hey, I have a deferred lighting question. My lighting looks kinda ugly. I know I need to pack my normal information into 2 channels of my RGBA texture to increase precision. I've scoured the internet for how to do this but have so far been unsuccessful. I've tried (packing): vec3 normal = normal_info; gl_FragData[1] = (normal.x, normal.x * 256.0 - floor(normal.x * 256.0), normal.y, normal.y * 256.0 - floor(normal.y * 256.0)); Unpacking: normal.x = normaltex.x + normaltex.y * 256.0; normal.y = normaltex.z + normaltex.a * 256.0; This doesn't work and it fact looks worse. What is the proper way to do this without bitwise operations?

There's some good information about normal packing here.

Regards
elFarto

Thanks, Farto. Thats an awesome link but I guess my question is actually more general.

How do you put the first 2 bytes of any float, into two channels of a texture?

Nevermind. I just changed the texture to RGBA16 and it fixed it!