yet another NES palette generator, in Python
something to note: there is no one true NES palette, but this generator can pretty much approach colors that looks good enough. feel free to adjust to taste!
See requirements.txt for more details.
colour-science == 0.4.4- for linear light, and color adaptation functions.
matplotlib == 3.8.2- for graphs and
colour-scienceCIE 1931 colorimetry diagrams.
- for graphs and
usage: palgen_persune.py [-h] [-d] [--skip-plot] [-o OUTPUT]
[-f {.pal uint8,.pal double,.pal Jasc,.gpl,.png,.txt HTML hex,.txt MediaWiki,.h uint8_t}]
[-e] [-t TEST_IMAGE] [-r RENDER_IMG] [-w] [-p]
[-n {scale,scale clip negative}]
[-ppu {2C02,2C03,2C04-0000,2C04-0001,2C04-0002,2C04-0003,2C04-0004,2C05-99,2C07}]
[-c {darken,desaturate}] [-bri BRIGHTNESS]
[-con CONTRAST] [-hue HUE] [-sat SATURATION]
[-blp BLACK_POINT] [-whp WHITE_POINT] [-gai GAIN]
[-gam GAMMA] [--delay-line-filter]
[-axs {None,CXA2025AS_JP,CXA2025AS_US}] [-bsd] [-spg]
[-phs PHASE_SKEW] [-aps ANTIEMPHASIS_PHASE_SKEW]
[-ela EMPHASIS_LUMA_ATTENUATION]
[-rfc REFERENCE_COLORSPACE] [-dsc DISPLAY_COLORSPACE]
[-cat CHROMATIC_ADAPTATION_TRANSFORM] [-ict]
[-oetf OPTO_ELECTRONIC] [-eotf ELECTRO_OPTIC]
[--opto-electronic-disable] [--electro-optic-disable]
[-cld]
[-rpr REFERENCE_PRIMARIES_R REFERENCE_PRIMARIES_R]
[-rpg REFERENCE_PRIMARIES_G REFERENCE_PRIMARIES_G]
[-rpb REFERENCE_PRIMARIES_B REFERENCE_PRIMARIES_B]
[-rpw REFERENCE_PRIMARIES_W REFERENCE_PRIMARIES_W]
[-dpr DISPLAY_PRIMARIES_R DISPLAY_PRIMARIES_R]
[-dpg DISPLAY_PRIMARIES_G DISPLAY_PRIMARIES_G]
[-dpb DISPLAY_PRIMARIES_B DISPLAY_PRIMARIES_B]
[-dpw DISPLAY_PRIMARIES_W DISPLAY_PRIMARIES_W]
yet another NES palette generator
options:
-h, --help show this help message and exit
-d, --debug debug messages
--skip-plot skips showing the palette plot
-o OUTPUT, --output OUTPUT
file output path
-f {.pal uint8,.pal double,.pal Jasc,.gpl,.png,.txt HTML hex,.txt MediaWiki,.h uint8_t}, --file-format {.pal uint8,.pal double,.pal Jasc,.gpl,.png,.txt HTML hex,.txt MediaWiki,.h uint8_t}
file output format. default = ".pal uint8"
-e, --emphasis include emphasis entries
-t TEST_IMAGE, --test-image TEST_IMAGE
use 256x240 uint16 raw binary PPU frame buffer for
palette proofreading
-r RENDER_IMG, --render-img RENDER_IMG
render views and diagrams as images in docs folder
with the provided file extension.
-w, --waveforms view composite waveforms
-p, --phase-QAM view QAM demodulation
-n {scale,scale clip negative}, --normalize {scale,scale clip negative}
normalize all colors within gamut by scaling values
-ppu {2C02,2C03,2C04-0000,2C04-0001,2C04-0002,2C04-0003,2C04-0004,2C05-99,2C07}, --ppu {2C02,2C03,2C04-0000,2C04-0001,2C04-0002,2C04-0003,2C04-0004,2C05-99,2C07}
PPU chip used for generating colors. default = 2C02
-c {darken,desaturate}, --clip {darken,desaturate}
clips out-of-gamut RGB colors
-bri BRIGHTNESS, --brightness BRIGHTNESS
luma brightness delta in IRE units, default = 0.0
-con CONTRAST, --contrast CONTRAST
luma contrast factor, default = 1.0
-hue HUE, --hue HUE chroma hue angle delta, in degrees, default = 0.0
-sat SATURATION, --saturation SATURATION
chroma saturation factor, default = 1.0
-blp BLACK_POINT, --black-point BLACK_POINT
black point, in IRE units, default = 0 IRE
-whp WHITE_POINT, --white-point WHITE_POINT
white point, in IRE units, default = level $20
-gai GAIN, --gain GAIN
gain adjustment to signal before decoding, in IRE
units, default = 0.0
-gam GAMMA, --gamma GAMMA
if defined, will apply a simple OETF gamma transfer
function instead, where the EOTF function is assumed
to be gamma 2.2.
--delay-line-filter use 1D delay line comb filter decoding instead of
single-line decoding
-axs {None,CXA2025AS_JP,CXA2025AS_US}, --axis-shift {None,CXA2025AS_JP,CXA2025AS_US}
axis adjustment for R-Y and G-Y like Sony CXA2025AS,
default = None
-bsd, --burst-saturation-disable
disable using colorburst amplitude as saturation
reference
-spg, --sinusoidal-peak-generation
generate sine waves in composite encoding instead of
square waves
-phs PHASE_SKEW, --phase-skew PHASE_SKEW
differential phase distortion for composite PPUs, in
degrees, default = 0.0
-aps ANTIEMPHASIS_PHASE_SKEW, --antiemphasis-phase-skew ANTIEMPHASIS_PHASE_SKEW
additonal phase distortion on colors $x2/$x6/$xA for
composite PPUs, in degrees, default = 0.0
-ela EMPHASIS_LUMA_ATTENUATION, --emphasis-luma-attenuation EMPHASIS_LUMA_ATTENUATION
additonal luma brightness on colors $x4/$x8/$xC for
composite PPUs, in voltage units, default = 0.0
-rfc REFERENCE_COLORSPACE, --reference-colorspace REFERENCE_COLORSPACE
use colour.RGB_COLOURSPACES reference colorspace,
default = "SMPTE C"
-dsc DISPLAY_COLORSPACE, --display-colorspace DISPLAY_COLORSPACE
use colour.RGB_COLOURSPACES display colorspace,
default = "sRGB"
-cat CHROMATIC_ADAPTATION_TRANSFORM, --chromatic-adaptation-transform CHROMATIC_ADAPTATION_TRANSFORM
chromatic adaptation transform method, default = None
-ict, --inverse-chromatic-transform
invert direction of chromatic adaptation transform
method (from display to reference colorspace)
-oetf OPTO_ELECTRONIC, --opto-electronic OPTO_ELECTRONIC
applies "colour.models" color component transform
function to use as opto-electronic transform function
override
-eotf ELECTRO_OPTIC, --electro-optic ELECTRO_OPTIC
applies "colour.models" color component transform
function to use as electro-optic transform function
override
--opto-electronic-disable
disable converting linear light to linear signal
--electro-optic-disable
disable converting linear signal to linear light
-cld, --colorimetry-disable
disable all colorimetry functions
-rpr REFERENCE_PRIMARIES_R REFERENCE_PRIMARIES_R, --reference-primaries-r REFERENCE_PRIMARIES_R REFERENCE_PRIMARIES_R
set custom reference color primary R, in CIE xy
chromaticity coordinates
-rpg REFERENCE_PRIMARIES_G REFERENCE_PRIMARIES_G, --reference-primaries-g REFERENCE_PRIMARIES_G REFERENCE_PRIMARIES_G
set custom reference color primary G, in CIE xy
chromaticity coordinates
-rpb REFERENCE_PRIMARIES_B REFERENCE_PRIMARIES_B, --reference-primaries-b REFERENCE_PRIMARIES_B REFERENCE_PRIMARIES_B
set custom reference color primary B, in CIE xy
chromaticity coordinates
-rpw REFERENCE_PRIMARIES_W REFERENCE_PRIMARIES_W, --reference-primaries-w REFERENCE_PRIMARIES_W REFERENCE_PRIMARIES_W
set custom reference whitepoint, in CIE xy
chromaticity coordinates
-dpr DISPLAY_PRIMARIES_R DISPLAY_PRIMARIES_R, --display-primaries-r DISPLAY_PRIMARIES_R DISPLAY_PRIMARIES_R
set custom display color primary R, in CIE xy
chromaticity coordinates
-dpg DISPLAY_PRIMARIES_G DISPLAY_PRIMARIES_G, --display-primaries-g DISPLAY_PRIMARIES_G DISPLAY_PRIMARIES_G
set custom display color primary G, in CIE xy
chromaticity coordinates
-dpb DISPLAY_PRIMARIES_B DISPLAY_PRIMARIES_B, --display-primaries-b DISPLAY_PRIMARIES_B DISPLAY_PRIMARIES_B
set custom display color primary B, in CIE xy
chromaticity coordinates
-dpw DISPLAY_PRIMARIES_W DISPLAY_PRIMARIES_W, --display-primaries-w DISPLAY_PRIMARIES_W DISPLAY_PRIMARIES_W
set custom display whitepoint, in CIE xy chromaticity
coordinates
version 0.15.0
This work is licensed under the MIT-0 license.
Copyright (C) Persune 2024.
Special thanks to:
- NewRisingSun
- lidnariq
- PinoBatch
- jekuthiel
- _aitchFactor
This would have not been possible without their help!