So, I’m trying to use a Scene Capture 2D for rendering reflections, but I don’t want to have to manually set up a new Render Target for every reflective surface. Instead, I made a blueprint that used a Canvas Render Target 2D (the only Render Target available in Blueprints, it seems), created dynamically, to render the reflections onto. However, this did not work when played in a standalone window. I changed this out for a Render Target asset, only to find, to my irritation, that I can’t create these at run time, or even change settings such as the size (so I can scale the Render Target down to improve performance for lower-end machines). I would like to be able to configure all my settings from the one blueprint, to aid the workflow. Is there a way I can do this, or is it just not possible?
Hey Hoeloe -
You cannot create a texture at runtime in blueprints. You can however do it through a C++ implementation, a user has posted a wiki detailing a possible implementation, A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums
That’s a shame. It’s a pity there are so many functions missing from Blueprints, especially when it’s just a case of creating an object.
Out of interest, is it possible to change the size of a Render Texture? I know you can change most of the parameters, but the resolution doesn’t seem to be one of them.
Can we store a single render target texture for each object individually, even without saving textures on a disk? Just to keep the texture information (some texture object?) in memory that would exist only at runtime.
Something like this would also be very helpful for creating things like @anonymous_user_386a1ac8
For example, let’s say we have procedurally generated people, so every person has random face, hair, etc. They all want to take a selfie and store it in their pockets until the game session ends/next level loads.
Is there some way to achieve this with blueprints?
There is now a static node called Create Render Target 2D which can be called from Actors and Components. You can supply the desired Width and Height.
Yes, but how can you supply it with custom picture instead of black-ish stuff?
Its black because you have just created a blank render target.
I know this is not the proper way, but just another way of doing it.
Create a material with the image or even in world camera and in blue print after you create a render target there is an option to draw material to render target.
Hope this helps for now.