Screen-space effects are affected by SSAA

[Meakk]

Describe the bug When SSAA is enabled, the background blur effect, and SSAO are giving different results.

To Reproduce Steps to reproduce the behavior:

1. Open a file and a HDRI and SSAO and blur background option
2. Compare the result between FXAA and SSAA by pressing A

	FXAA	SSAA
Blur
SSAO
Edge width

Expected behavior Blur and SSAO should look similar

System Information:

• OS: All
• GPU and GPU driver: Not relevent

F3D Information 3.1

[Meakk]

The grid line width look different too.

[mwestphal]

Its different but is it wrong ? Should we "fix" the rendering of Blur/SSAO/Grid to look similar at any resolution ? Or do you mean that we should fix it only in the context of SSAA ?

[Meakk]

When switch from an anti-aliasing option to another, we shouldn't have different appearance, just anti-aliased edges.