Get antialiased RenderTexture - how?

Questions & Answers
1

I would like to get anlialiased RenderTexture on Editor Platform with the code below:

var rt : RenderTexture = new RenderTexture(resWidth, resHeight, 24, RenderTextureFormat.ARGB32);
rt.filterMode = FilterMode.Trilinear;
currentCamera.targetTexture = rt;
currentCamera.Render();

I expected setting the filtermode would ensure that, but it does not. (in the Editor Platform)
Would be grateful for any suggestions.

3

You could also put an antialiasing script (importable image effect) on the camera that renders into the RenderTexture.

2

The filterMode will just influence the look of the RenderTexture while displaying the texture, but the pixels of the RenderTexture will always be non-anitaliased.

Unfortunately, multisampling or other forms of antialiasing are not supported for RenderTextures.

As suggested here: Render Texture and antialiasing - Questions & Answers - Unity Discussions , your only chance is to increase the RenderTexture’s size to its max (2048x2048) and use trilinear filtering with that.

EDIT: apparently in 4.2, Anti-Aliasing for RenderTextures was introduced. However I have not tried it so far.