More warnings from generatevolume

[gavanw]

(via Lord_Nightmare):

ok, building on mac works
using the cmake stuff
but i'm getting different errors there, and like on windows nothing really works correctly
on runtime
Error validating shader 33
Shader 34 ( ../src/glsl/GenerateVolumeEnt.c ) compile error: WARNING: 0:2: extension 'GL_ARB_uniform_buffer_object' is not supported

Shader 35 ( ../src/glsl/GenerateVolumeEnt.c ) compile error: WARNING: 0:2: extension 'GL_ARB_uniform_buffer_object' is not supported

Program 75 link error: WARNING: Output of vertex shader 'finalVec' not read by fragment shader
and likewise
Error validating shader 129
Shader 130 ( ../src/glsl/GenerateVolumeEnt.c ) compile error: WARNING: 0:2: extension 'GL_ARB_uniform_buffer_object' is not supported

Shader 131 ( ../src/glsl/GenerateVolumeEnt.c ) compile error: WARNING: 0:2: extension 'GL_ARB_uniform_buffer_object' is not supported

Program 171 link error: WARNING: Output of vertex shader 'finalVec' not read by fragment shader
otherwise mac seems to act like windows build; water works, nothing else
with one exception: the mouse wheel doesn't work in mac
and it is constantly spewing 2016-08-05 03:07:39.506 VoxelQuest[2568:55298] GLUT Warning: glutCurrentModifiers: do not call outside core input callback. to console
i'm guessing the stock amd gpu shader compiler used on both windows and mac (this is a hackintosh running on identical hardware, other partition, to windows 10) has a bug causing two shaders to fail to compile