mirror of
https://github.com/kovidgoyal/kitty.git
synced 2024-09-20 11:07:38 +03:00
49 lines
1.0 KiB
Python
Executable File
49 lines
1.0 KiB
Python
Executable File
#!/usr/bin/env python3
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# vim:fileencoding=utf-8
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import os
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from typing import List
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def to_linear(a: float) -> float:
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if a <= 0.04045:
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return a / 12.92
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else:
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return float(pow((a + 0.055) / 1.055, 2.4))
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def generate_srgb_lut(line_prefix: str = '') -> List[str]:
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values: List[str] = []
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lines: List[str] = []
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for i in range(256):
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values.append('{:1.5f}f'.format(to_linear(i / 255.0)))
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for i in range(16):
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lines.append(line_prefix + ', '.join(values[i * 16:(i + 1) * 16]) + ',')
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return lines
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def generate_srgb_gamma_c() -> str:
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lines: List[str] = []
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lines.append('// Generated by gen-srgb-lut.py DO NOT edit')
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lines.append('#include "srgb_gamma.h"')
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lines.append('')
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lines.append('const GLfloat srgb_lut[256] = {')
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lines += generate_srgb_lut(' ')
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lines.append('};')
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return "\n".join(lines)
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def main() -> None:
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c = generate_srgb_gamma_c()
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with open(os.path.join('kitty', 'srgb_gamma.c'), 'w') as f:
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f.write(f'{c}\n')
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if __name__ == '__main__':
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main()
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