Rendering: tiles visible in final render

[3dickulus]

effects in the "Post" tab are executed in the buffershader.frag, this does not see the whole picture, only what's in the buffer, when tile rendering it only "sees" one tile at a time and does not compensate for neighboring tiles, that's why there is padding option, this over-renders and clips the middle so that tile borders match better.

effects like lensflare http://www.fractalforums.com/fragmentarium/adding-to-the-buffershader/ fail miserably with small tiles and require the entire image or it won't apply properly

 

[Sabine]

Thank you for the explanation, 3Dickulus, very helpful for understanding what really happens there!