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Scene Capture 2D AA broken

I have a SceneCapture2D that I want to look identical to the normal camera rendering. Instead, it's fully aliased.

I have Capture Every Frame, General Show Flags: Anti-Aliasing, Advanced Show Flags: Temporal AA (instead of FXAA) all enabled. Neither of the AA checkboxes appear to have any effect.

How can I get my SceneCapture2D to be anti-aliased?

Scene Capture 2D Details

Product Version: UE 4.18
aasettings.png (63.1 kB)
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asked Mar 05 '18 at 04:50 PM in Rendering

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avatar image Ponder42 Mar 05 '18 at 05:17 PM

Is the size of your texture target large enough for the intent? (i.e., are you losing quality due to the texture size)?

avatar image Gavin.Kistner Mar 05 '18 at 05:23 PM

Good question. No, this is not an artifact of small texture being upscaled. The texture is currently sized at 1280x720, and being viewed at 1:1 in the editor. I can see full aliasing at the pixel level.

avatar image Ponder42 Mar 05 '18 at 09:46 PM

Use "Before Tonemapping" on the texture pull? From Post Process Materials documentation:

Before Tonemapping - PostProcessInput0 provides the scene color with all lighting in HDR. Use this to fix issues with temporal antialiasing and GBuffer lookups e.g. depth, normals.

After Tonemapping - Preferred location for performance as the color is LDR and therefore requires less precision and bandwidth. This is after tone mapping and color grading.

avatar image Gavin.Kistner Mar 05 '18 at 10:02 PM

Another good guess, but the post-processing material using this target texture is already using Before Tonemapping.

avatar image lexcelsior Mar 25 '19 at 05:00 PM

Did you ever find a fix to this?

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