Small fix for big issue - Fix spectrum

Created by: otiskujawa

This should fix #287 (closed) and #327

changing line 4 of SpectrumVertex.glsl resolved this issue uniform int u_amplitude[ 1000 ]; somehow 1008 works and 1009+ doesn't (it was originally 1024)

For some reason #200 (closed) is back and it forced me to play guess the number but i need to compile every number to check and result is 1008 works, 1009 doesn't work