x

Search in
Sort by:

Question Status:

Search help

  • Simple searches use one or more words. Separate the words with spaces (cat dog) to search cat,dog or both. Separate the words with plus signs (cat +dog) to search for items that may contain cat but must contain dog.
  • You can further refine your search on the search results page, where you can search by keywords, author, topic. These can be combined with each other. Examples
    • cat dog --matches anything with cat,dog or both
    • cat +dog --searches for cat +dog where dog is a mandatory term
    • cat -dog -- searches for cat excluding any result containing dog
    • [cats] —will restrict your search to results with topic named "cats"
    • [cats] [dogs] —will restrict your search to results with both topics, "cats", and "dogs"

How passes the Instanced static mesh all transforms to the shader?

Hi all,

I´m currently lack of information and really hope that somebody can help me out with his knowledge :-)

At the moment my goal is to understand how the ISMC is rendering the mesh with different transforms. What i already found out from the code and debugging:

  • You add an Instance to the ISMC

  • The FStaticMeshInstanceBuffer will be called with InitRHI

  • The SMIBuffer grabs the FResourceArrayInterface were all transforms are saved in

  • A new FVertexBufferRHIRef is created

On top i´ve found out which shader is used, it is located in LocalVertexFactory.usf. But i don´t see how all the transforms are applied one by one on the mesh to render it

My Questions:

  • Where is the magic happening that renders all transforms of the ISMC one by one?

  • Is there a place where the transforms are passed to the shader?

I´m currently lost in this missing point of rendering ISMC that i´m able to implement my feature.

Background I need this knowledge in order to get the approaches of Spline meshes and InstancedStaticMesh together at runtime to have lower draw calls

Thank you very much!

Cheers, Maik

Product Version: UE 4.17
Tags:
more ▼

asked Sep 13 '17 at 02:57 PM in Rendering

avatar image

Krustenkaese
8 4 8

(comments are locked)
10|2000 characters needed characters left
Viewable by all users

0 answers: sort voted first
Be the first one to answer this question
toggle preview:

Up to 5 attachments (including images) can be used with a maximum of 5.2 MB each and 5.2 MB total.

Follow this question

Once you sign in you will be able to subscribe for any updates here

Answers to this question