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34 lines
788 B
Python
34 lines
788 B
Python
#
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# srgb_gen.py
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# tools/
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#
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# Created by Ryan Huffman on 8/8/2016.
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# Copyright 2016 High Fidelity, Inc.
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#
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# Distributed under the Apache License, Version 2.0.
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# See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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# Generates a lookup table for SRGB to Linear color transformations
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NUM_VALUES = 256
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srgb_to_linear = []
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# Calculate srgb to linear
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for i in range(NUM_VALUES):
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s = float(i) / 255
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if s < 0.04045:
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l = s / 12.92
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else:
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l = ((s + 0.055) / 1.055) ** 2.4
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srgb_to_linear.append(l)
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# Format and print
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data = "{\n "
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for i, v in enumerate(srgb_to_linear):
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data += str(v) + "f"
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if i < NUM_VALUES - 1:
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data += ", "
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if i > 0 and i % 6 == 0:
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data += "\n "
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data += "\n}"
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print(data)
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