RenderTexture.useMipMap

Unity Engine
1

…doesn’t seem to work!

I’ve created a rendertexture like so:

		RT = new RenderTexture( 1024, 1024, 24, RenderTextureFormat.ARGB32, RenderTextureReadWrite.sRGB );
		RT.useMipMap = true;
		Mat.SetTexture("_MainTex",RT);
		OSCam.targetTexture = RT;

but it doesn’t work!

In my Update loop, I have the following:

		if ( !RT.useMipMap )
		{
			RT.useMipMap = true;
			Debug.Log ("! "+RT.width+", "+RT.height);
		}

which always executes.

What am I doing wrong? I’m on iOS Pro, Unity 3.5.7f6.

If I add “RT.mipMapBias” at all, it crashes Unity entirely…

Lost!

Any ideas?

2

Sorry all - have to push this. Usually there’s an answer somewhere on Google, but not on this one! As RenderTextures are only really used as targets for Cameras, this is either a bug in Unity, or I’m doing something wrong.

Help! Aras? Rej? Dreamora?? :stuck_out_tongue:

3

Sorry, folks - TTT again. Is my inability to turn on MipMaps on Rendertextures a bug in Unity?

4

Is this likely to be the longest thread with only one author? Someone from Unity? Can you help me?

5

what platform are you running on? It is not like all of them do support rt mipmapping.
Judging from code (the current version though, not 3.5)
dx11 - have it
dx9 - checks D3DCAPS2_CANAUTOGENMIPMAP
gl - checks lots of stuff (but for most of it it will print to log about disabling rt mipmaps - at the beginning where it dumps ext etc)

6

Key platforms are Macbook Pro (gl), iPhone 4S and iPad 3 (GLES 2.0)

Are they not supported on those platforms? I can’t find any info to suggest that’s the case with any of 'em…

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