* crt-resswitch-glitch-koko: use % of screen as treshold and skip initial frames to avoid unwanted glitches on flyback core.
* crt-resswitch-glitch-koko: check for horizontal resolution too and code legibility improvement
* initial cathode-retro port
* move ntsc-adaptive and most associated presets over to use guest.r's modified version
* fix some ctrl^H goofs
* add license blocks to cathode-retro shaders
* updates to cathode-retro; signal stuff is still broken but less so maybe
* Move initial batch of shaders and presets to smoothing subdirectory
* Rename smoothing to edge enhancement
* Move cubic and windowed into interpolation
* Fix some presets
* Fix rest of presets
* Rename edge-enhancement to edge-smoothing
* Move pixel art scalers into separate directory separate from 'interpolation'
* Flatten interpolation/cubic into interpolation/
* some ports from glsl
* add ntsc-feather
* Add files via upload
* Rename ntsc/shaders/ntsc-feather.slang to ntsc/shaders/ntsc-simple/ntsc-feather.slang
* Update zfast_crt_composite.slang
1:1 with GLSL
This shader tries to reproduce a CRT-like output without replicating a RGB patterns.
It has the following features:
- allows fractional scaling
- uses texture AA shader and subpixel scaling for evenly placed sharp pixels
- has a horizontal blur function which mimics bad signal quality of some systems (megadrive, psx)
- has a vertical blur function which mimics n64 vertical software blur
- adds some noise to mimic restless CRT colors
- has a curvator function
- looks good with resolutions <= 1080p
- has modest system requirements
- adds a slotmask to the output.
https://forums.libretro.com/t/gizmo-slotmask-crt-shader/41594
* Add gizmo-crt shader
This shader tries to reproduce a CRT-like output without replicating mask or RGB patterns.
It has the following features:
- allows fractional scaling
- uses texture AA shader and subpixel scaling for evenly placed sharp pixels
- has a horizontal blur function which mimics bad signal quality of some systems (megadrive, psx)
- has a vertical blur function which mimics n64 vertical software blur
- adds some noise to mimic restless CRT colors
- has a curvator function
- looks good with resolutions <= 1080p
- has modest system requirements
https://forums.libretro.com/t/gizmo-crt-shader/41409https://github.com/gizmo98/gizmo-crt-shader
