Double precision floating point as shader uniforms and texture buffers. #135
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…der uniforms and texture buffers. Texture buffer support is blocked by CUDATextureBuffer type being templated, making it awkward to have dynamic support for any type.
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WIP/Experimentation
Double support in texture buffers appears unsupported, there are no 8 byte type image formats, likewise the
floatbitstoint()GLSL functions, do not have an equivalent for unpacking two floats to a double. Hence, we would need to perform this conversion ourselves, prior to the buffer being passed to OpenGL to support doubles.doubleuniforms may now work, but requires testing. Double is supported since OpenGL 4.0. In the process of handling this, I noticed that static uniformmat4would be losing data as they were stored into avec4, so final 12floatwould all be dropped!