3D Model Optimizations

• The model should be scaled to real life sizes and the origin point should be at the center of the model before exporting.

• For the model to be efficient, the poly count should be kept as low as possible. All the textures exported should go through a compression pass using online compressor tinypng.com or similar.

• Lower the size of the model, the better would be the loading speed.

  • Ensure the number of vertices/triangles/polygons is as low as possible.

  • Ensure textures are compressed

  • Bake the textures into the model. Keep textures less than 4k resolution.

3D Model Details and File Size Recommendation​

Element	Recommended Max Triangles Count	Recommended Max File Size
3D Models - Cumulative	50K	50MB
Colliders - Cumulative	5K	5MB

The above recommendation is for the whole scene. This is, less than 50k triangles, 50MB file size in total for a scene (i.e. the sum of all triangles/file sizes for all 3D Models in a scene).

Baking Textures into 3D Models

This is workflow we recommend. https://sketchfab.com/blogs/community/sketchfab-archvis-workflow-based-on-vray-baked-textures/

Steps:

• Decide to combine all objects or do them as individual objects

• Texture your model correctly with properly unwrapped UVs - no overlaps

• Setup good lighting and test it in quick render modes

• Bake and export textures

Other Workflows:

• https://docs.chaos.com/display/VMAX/Basic+Texture+Baking+with+V-Ray
• https://www.youtube.com/watch?v=r0M363A8um4&ab_channel=DeepakGraphics