FBX scene file construction for Previzion:

Model Construction

• Standard polygon models, 300k-500k polygons OK

• Normals facing the direction you want the texture displayed

• Standard UV texture mapping; the view in Previzion should be more or less identical to what you see in the OpenGL viewport in Lightwave with textures on.

• Lighting baked into the textures

• Still images up to 4k x 4k, can use 4-5 @4k plus several smaller 2k/1k textures

• Previzion can decode 2 1920x1080 streams of MPEG-2 video

• MPEG2 encodeing is default Blu-Ray setting in Sorensen Squeeze

• The still textures that will be replaced by the MPEG2 video should have a ‘video_’ prefix, i.e. ‘video_myTexture1’ and ‘video_myTexture2’ or similar. Previzion’s FBX loader recognizes these textures, and creates a link that lets us drive the texture with the MPEG2 decoded frames. The original texture should be the same 1920x1080 aspect ratio that the MPEG2 files will be encoded at; we usually just use the first frame of the video file as the placeholder texture.

• Textures can be JPEG or Targa.

• If you want transparency in a still texture, use a Targa RGBA file and put the transparency information in the Alpha channel. Apply this texture to both the Color and Transparency channels. This works great for ferns, tree leaves, etc.