Clash Royale CLAN TAG#URR8PPP

Does a texture with data and a texture with no data consume the same amount of memory?

In my application I create textures, render to them and delay reading from them until absolutely needed by the CPU.

I'd like to know (and I still don't know how) given that I guess and monitor the consumed GPU memory would the call to readPixels() alleviate the memory consumption of the GPU by transferring data to the CPU? Or would that memory still be occupied until I destroy the texture?

readPixels()

1 Answer
1

readPixels just copies the data. It does not remove it from the GPU.

readPixels

Textures that you don't pass data to (you passed null) take the same amount of memory as textures you pass no data to. The browser just fills the texture with zeros for you.

null

The only way for a texture to stop using memory is for you to delete it with gl.deleteTexture. You also need to remove every reference to it (unbind it from any texture units it's still on and remove it from any framebuffer attachments or delete the framebuffer's it's attached to).

gl.deleteTexture

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.