Use random skynormals for vertex and ambient lighting. Also replaced -lightprobelevel with -lightprobesamples

[ncuxonaT]

No description provided.

[SNMetamorph]

There is compiling error:

 /home/runner/work/PrimeXT/PrimeXT/utils/pxrad/ambientcube.cpp:265:58: error: ‘g_lightprobelevel’ was not declared in this scope; did you mean ‘g_lightprobesamples’?
   265 |         scaleAvg = 4.0f * M_PI / ((float)g_numskynormals[g_lightprobelevel] * scaleAvg);        //ratio of ray cone and face solid angles
       |                                                          ^~~~~~~~~~~~~~~~~
       |                                                          g_lightprobesamples

[ncuxonaT]

Да, там должно быть
scaleAvg = 4.0f * M_PI / ((float)g_lightprobesamples * scaleAvg); //ratio of ray cone and face solid angles