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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /gfx/thebes/genTables.py | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'gfx/thebes/genTables.py')
-rw-r--r-- | gfx/thebes/genTables.py | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gfx/thebes/genTables.py b/gfx/thebes/genTables.py new file mode 100644 index 000000000..0e902c52a --- /dev/null +++ b/gfx/thebes/genTables.py @@ -0,0 +1,22 @@ +#!/usr/bin/python + +from __future__ import print_function +import sys + +def table_generator(f): + return ",\n".join([", ".join(["0x%2.2x" % h for h in [f(i) for i in range(r,r+16)]]) for r in range(0, 65536, 16)]) + +def generate(output): + output.write("const uint8_t gfxUtils::sPremultiplyTable[256*256] = {\n"); + output.write(table_generator(lambda i: ((i / 256) * (i % 256) + 254) / 255) + "\n") + output.write("};\n"); + output.write("const uint8_t gfxUtils::sUnpremultiplyTable[256*256] = {\n"); + output.write(table_generator(lambda i: (i % 256) * 255 / ((i / 256) if (i / 256) > 0 else 255) % 256) + "\n") + output.write("};\n"); + +if __name__ == '__main__': + if len(sys.argv) != 2: + print("Usage: genTables.py <header.h>", file=sys.stderr) + sys.exit(1) + with open(sys.argv[1], 'w') as f: + generate(f) |