Panda3d Simplepbr Versions Save

• Optimize lighting calculations for slight performance improvements
• Stop calculating lighting for unused lights (can be a huge savings if using few lights)
• Add support for ambient lights
  • NOTE: These are not physically accurate, but can still be useful
• Add initial support for normal maps
  • Disabled by defaults since it requires models with properly defined tangents
• Various fixes related to material roughness from @el-dee
• Fix transparency (the alpha channel from the base color texture is now being used)

• Another Windows path fix

• Remove debug print that dumped out the PBR fragment shader

• Fix paths to shaders on Windows

• Improve support for drivers/GPUs that only support EXT_framebuffer_object and not ARB_framebuffer_object
• Allow specifying the maximum number of lights to support via new max_lights kwarg (defaults to 8)
• Add support for MSAA that can be controlled via a new msaa_samples kwarg (defaults to 4)

Initial release