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rhino:5:video:troubleshooting:slowrenderingmode [2022/02/03]
maryfugier [Question:]
rhino:5:video:troubleshooting:slowrenderingmode [2022/02/03] (current)
maryfugier [File Analysis]
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 You may be expecting that //“If something takes 10 seconds, then if I get a card that’s 10x faster, then it should only take 1 second”.// You may be expecting that //“If something takes 10 seconds, then if I get a card that’s 10x faster, then it should only take 1 second”.//
 +\\
 This is only true if 100% of the time Rhino spent on the GPU, which is not the case. This is only true if 100% of the time Rhino spent on the GPU, which is not the case.
 But if only 1% of the time is spent on the GPU, then the result is basically going to be the same…10 seconds.  But if only 1% of the time is spent on the GPU, then the result is basically going to be the same…10 seconds. 
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 Getting us a model is the best way for us to know where the bottlenecks are.  Getting us a model is the best way for us to know where the bottlenecks are. 
-You can submit a model for testing to tech support [[https://www.rhino3d.com/upload|here]]. (Fill out the comment field in detail so we know what issue you are having and what version of Rhino you are using. Incomplete information can result in a delayed response from technical support.)+You can submit a model for testing to tech support [[https://www.rhino3d.com/upload|here]]. 
 +\\ 
 +//(Fill out the comment field in the upload with all the details, so we know what issue you are having and what version of Rhino you are using. Incomplete information can result in a delayed response from technical support.)//
  
 For example, if you are getting 3 fps Rendered mode result and a Shaded mode yields ~50 fps, that does seem concerning. For example, if you are getting 3 fps Rendered mode result and a Shaded mode yields ~50 fps, that does seem concerning.
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 ==== File Analysis ==== ==== File Analysis ====
- +Here are some recommendations to improved performance of a file that is slow. These may improve the general overall performance of your file in may more ways, as well
-If you file appears to be well organized in terms of “objects” and “layers”, and there are no kind of bad objects or excessive usage of blocks, and if ther ewere no immediate or obvious problems found with the content of your file when performing basic display operations, the display performance may still seem to be sub-par+  - Keep the overall number of objects in the scene as low as possible and not excessive  so the object management overhead is not the bottle neck.  
-  +  - Organize your file in and assign “objects” to “layers”. 
-Also keep the overall number of objects in the scene as low as possible and not excessive  so the object management overhead is not the bottle neck. +  - Check for bad objects and rebuild them. 
 +  - Avoid excessive usage of blocks 
 +  - Purge unused content in your file like materials and textured. 
 +  - Reset your Render mode settings to default //(Options -> View -> Display modes -> Rendered. Pick button at bottom to reset to Rhino defaults.)// 
 +  - Insert the contents of your file into a new file. //(This may leave some problem with the file behind.)// 
 +But still, the display performance can seem sub-par and painfully slow.
  
 If different “shaded” display modes all seemed to produce similar performance results, **except the Rendered display mode** which can be significantly slower than the other modes. If different “shaded” display modes all seemed to produce similar performance results, **except the Rendered display mode** which can be significantly slower than the other modes.
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 However, the path from a Rhino object to colorful pixels on the screen is a very complex and tedious process that does not take place in these other products.  However, the path from a Rhino object to colorful pixels on the screen is a very complex and tedious process that does not take place in these other products. 
    
-TwinMotion and similar products are only interested in two things; 1) Polygons and 2)the color of said polygons. Once they have all of the information for all of the polygons, there are all kinds of optimizations that can be made.+TwinMotion and similar products are only interested in **two things**; 
 +  - Polygons  
 +  - The color of said polygons.  
 +Once they have all of the information for all of the polygons, there are all kinds of optimizations that can be made.
    
 ==== Testing and Analysis ==== ==== Testing and Analysis ====
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 With that said, we are committed to solving the issues mentioned above over time, and are always trying to make changes/additions to Rhino that will improve overall performance in future versions.  With that said, we are committed to solving the issues mentioned above over time, and are always trying to make changes/additions to Rhino that will improve overall performance in future versions. 
    
 +//Question? Please email [[mary@mcneel.com|Mary Ann Fugier]]Mary Ann Fugier, Rhino Technical Support, Seattle WA.//
rhino/5/video/troubleshooting/slowrenderingmode.1643923465.txt.gz · Last modified: 2022/02/03 by maryfugier