English Amiga Board - View Single Post - Pre-Scaling before Bilinear Scaling?

mark_k · 05 September 2015, 19:13

Here are some real-world example pics. I took these on an Android phone (1280×720 screen) when running the Snes9x EX Super NES emulator. The emulator scales the 224-line game image to 720 output lines, i.e. by a factor of 45/14.

There are three screenshots. One with no linear filtering, one with linear filtering (224→720 lines), and one with 2× prescaling and linear filtering (448→720 lines). The image with prescaling is significantly less blurry. You might want to download then view at 100% scale in a paint package in case your web browser scales the images.

05 September 2015, 19:13	#7
mark_k Registered User Join Date: Aug 2004 Location: Posts: 3,333	Here are some real-world example pics. I took these on an Android phone (1280×720 screen) when running the Snes9x EX Super NES emulator. The emulator scales the 224-line game image to 720 output lines, i.e. by a factor of 45/14. There are three screenshots. One with no linear filtering, one with linear filtering (224→720 lines), and one with 2× prescaling and linear filtering (448→720 lines). The image with prescaling is significantly less blurry. You might want to download then view at 100% scale in a paint package in case your web browser scales the images. Attached Thumbnails