v0.99.3

• Using multiple ray gen nodes in a graph with different root signatures is ok now.
  • It used to throw all ray tracing shaders into the shader table which made problems when there were incompatible root signatures inolved.
  • Now it only includes the shaders actually used by the ray gen node when making a shader table for that node.
• You can use multiple miss shaders in a ray gen node now.
  • The lookup function for translating miss shader names to indices had broken logic.
• @IvarPD
  • Updated OpenFBX and improved the FBX importer to acknowledge multiple materials in a single mesh.
  • If you run the viewer with "-renderdoc", a renderdoc capture button shows up. Disabled by default because this disables raytracing.