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Correct System 246 (480P) aspect ratio & Vulkan visual improvement - #1602

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pizzzza19 wants to merge 2 commits into
jpd002:masterfrom
pizzzza19:vulkan
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Correct System 246 (480P) aspect ratio & Vulkan visual improvement#1602
pizzzza19 wants to merge 2 commits into
jpd002:masterfrom
pizzzza19:vulkan

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  • System 246 display aspect ratio as CRT 4:3 (ITU-R BT.601).
  • Add Bilinear interpolation into Vulkan to improve visual same as OpenGL

Most of PS2 games won't pick 480P so that are not affected.
Force 16:9 option still working if you wish to check enable.
Modern Graphic chip has more benefits in vulkan mode so you can enjoy vulkan mode experience with this update.

Unlike OpenGL, previous builds did not bilinear interpolation but just choose one address per pixel from memory buffer.
This caused lack of smoothing of display.

Now added bilinear interpolation to Vulkan and look similar to OpenGL.
480P display aspect rate should be 4:3 (ITU-R BT.601) and pixel aspect 8:9.
For System 246 games display aspect rate was incorrect that can see wider than actual CRT display.
@pizzzza19 pizzzza19 changed the title Correct System 246 (480P) aspect rate & Vulkan visual improvement Correct System 246 (480P) aspect ratio & Vulkan visual improvement Jul 18, 2026
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