Fix various bugs in NES NTSC filter and PPU palettes #31
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Gumball2415
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- Thanks lidnariq! - The new formula is based on the color generator clock cycle count per frame.
https://forums.nesdev.org/viewtopic.php?p=172817#p172817 Bisqwit originally intended to match a certain palette using different display primaries ("FCC D65"). This resulted in colors that looked off. The modification here is to more closely match Bisqwit's own palette generator, which uses a more standard RGB-YIQ matrix. at hue 0, saturation 1.0, contrast 1.0, brightness 1.0, gamma 2.2 https://bisqwit.iki.fi/utils/nespalette.php IQ component coefficients are derived from the NTSC base matrix of luminance and color-difference. with color reduction factors and an additional 33 degree rotation of each respective component. https://www.nesdev.org/wiki/NTSC_video#Converting_YUV_to_signal_RGB
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This PR aims to fix some small bugs regarding NES NTSC filters.
Changes in this PR: