How to draw texture RID from local RenderingDevice on screen?

[mrcdk]

It’s the other way around. You first create the texture from the main rendering device and share it with your local rendering device with texture_create_from_extension()

Here’s creating the texture in the main rendering device:

@mrcdk

	var main_rd = RenderingServer.get_rendering_device()
	var main_rid = main_rd.texture_create(tformat, tview)

	texture = Texture2DRD.new()
	texture.texture_rd_rid = main_rid

Here, the texture variable, holds the texture that will be used by the mesh/sprite. It points to the texture RID created in the main rendering device.

And here’s it sharing the texture in the local rendering device:

@mrcdk

	output_texture_rid = rd.texture_create_from_extension(RenderingDevice.TEXTURE_TYPE_2D,
		tformat.format,
		tformat.samples,
		tformat.usage_bits,
		main_rd.get_driver_resource(RenderingDevice.DRIVER_RESOURCE_TEXTURE, main_rid, 0),
		tformat.width,
		tformat.height,
		tformat.depth,
		tformat.array_layers)

The output_texture_rid is the texture RID in the local rendering device.

@blackears

am I right in thinking this is performing a copy of the texture data onto a new device?

As far as I understand, it’s not creating a copy of the data but sharing the resource (it’s the same data).