Improvements

• More small optimizations have been made to Light Index sampling making use of the new 16/8-Bit Types
• (From SMAA-MC v1.1.1) Rounding is now ensured to be consistent across OpenGL implementations
  • This was missed while porting SMAA from HLSL to GLSL, since the HLSL round always rounds midpoints towards even integers while the GLSL round has implementation-dependant behavior. GLSL roundEven is now used instead in the SMAA implementation

Fixed Issues

• Shaders fail to compile on AMD graphics drivers while using Gaussian shadow blur (reported by Mine18)