https://communities.sas.com/t5/Graphics-Programming/Struggling-to-understand-how-FXAA-works-exactly/m-p/891744#M24062 <P>I think you may be on the wrong forum unless you show us some SAS code that is using this "FXAA".</P> Wed, 30 Aug 2023 15:13:40 GMT ballardw 2023-08-30T15:13:40Z https://communities.sas.com/t5/Graphics-Programming/Struggling-to-understand-how-FXAA-works-exactly/m-p/891670#M24061 <P>Ive been stumped by FXAA for over a week, going through the Nvidia paper, source code, and some implementations online but I dont completely understand it. Parts I understand:</P><P>You look at a 3x3 block, deciding an edge and edge direction based on luminance delta values</P><P>You loop through that edge (in between pixels?, Bilinear filtering a must?) In both a positive and negative direction.</P><P>I don't understand what youre supposed to do after that. I would appreciate any help as this is driving me insane, if theres a visual explanation somewhere in detail then even better.</P> Wed, 30 Aug 2023 10:47:51 GMT https://communities.sas.com/t5/Graphics-Programming/Struggling-to-understand-how-FXAA-works-exactly/m-p/891670#M24061 saskun 2023-08-30T10:47:51Z https://communities.sas.com/t5/Graphics-Programming/Struggling-to-understand-how-FXAA-works-exactly/m-p/891744#M24062 <P>I think you may be on the wrong forum unless you show us some SAS code that is using this "FXAA".</P> Wed, 30 Aug 2023 15:13:40 GMT https://communities.sas.com/t5/Graphics-Programming/Struggling-to-understand-how-FXAA-works-exactly/m-p/891744#M24062 ballardw 2023-08-30T15:13:40Z