| Message ID | 20250611013245.133785-18-bryan.odonoghue@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series |
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| Related | show |
On 11/06/2025 02:32, Bryan O'Donoghue wrote: > Two simple script to generate a header that contains GLSL shaders translated > to C arrays. scripts plural --- bod
Hi Bryan, Bryan O'Donoghue <bryan.odonoghue@linaro.org> writes: > Two simple script to generate a header that contains GLSL shaders translated > to C arrays. > > Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> > --- > utils/gen-shader-header.py | 38 ++++++++++++++++++++++++++++++++ > utils/gen-shader-headers.sh | 44 +++++++++++++++++++++++++++++++++++++ > 2 files changed, 82 insertions(+) > create mode 100755 utils/gen-shader-header.py > create mode 100755 utils/gen-shader-headers.sh > > diff --git a/utils/gen-shader-header.py b/utils/gen-shader-header.py > new file mode 100755 > index 00000000..6668e648 > --- /dev/null > +++ b/utils/gen-shader-header.py > @@ -0,0 +1,38 @@ > +#!/usr/bin/env python3 > +# SPDX-License-Identifier: GPL-2.0-or-later > +# Copyright (C) 2025, Bryan O'Donoghue. > +# > +# Author: Bryan O'Donoghue <bryan.odonoghue@linaro.org> > +# > +# A python script which takes a list of shader files and converts into a C s/python/Python/ And maybe a missing object ("it" or so) after "convert"; it sounds weird to my limited English knowledge. > +# header. Adding a single line usage information could be useful (and checking the number of arguments + printing the usage on mismatch would be bonus, but not necessary for an internal build tool). > +# > +import sys > + > +try: > + with open(sys.argv[2]) as file: > + data = file.read() > + data_len = len(data) > + > + name = sys.argv[1].replace(".", "_") > + name_len = name + "_len" > + > + j = 0 > + print("unsigned char", name, "[] = {") > + for ch in data: > + print(f"0x{ord(ch):02x}, ", end="") > + j = j + 1 > + if j == 16: > + print() > + j = 0 Or a bit simpler: j = (j + 1) % 16 if j == 0: print() > + if j != 0: > + print() > + print("};") > + > + print() > + print(f"const unsigned int {name_len}={data_len};") > + > +except FileNotFoundError: > + print(f"File {sys.argv[2]} not found", file=sys.stderr) > +except IOError: > + print(f"Unable to read {sys.argv[2]}", file=sys.stderr) > diff --git a/utils/gen-shader-headers.sh b/utils/gen-shader-headers.sh > new file mode 100755 > index 00000000..ca4f19f0 > --- /dev/null > +++ b/utils/gen-shader-headers.sh > @@ -0,0 +1,44 @@ > +#!/bin/sh > +set -x > + > +if [ $# -lt 4 ]; then > + echo "Invalid arg count must be >= 5" And the arguments should be? > + exit 1 > +fi > +src_dir="$1"; shift > +build_dir="$1"; shift > +build_path=$build_dir/"$1"; shift > + > +cat <<EOF > "$build_path" > +/* SPDX-License-Identifier: LGPL-2.1-or-later */ > +/* This file is auto-generated, do not edit! */ > +/* > + * Copyright (C) 2025, Linaro Ltd. I don't think this can be claimed on contents generated from arbitrary sources. > + * > + */ > + > +#pragma once > + > +EOF > + > +cat <<EOF >> "$build_path" > +/* > + * List the names of the shaders at the top of > + * header for readability's sake > + * > +EOF > + > +for file in "$@"; do > + echo "file is $file" > + name=$(basename "$build_dir/$file" | tr '.' '_') > + echo " * unsigned char $name;" >> "$build_path" > +done > + > +echo "*/" >> "$build_path" > + > +echo "/* Hex encoded shader data */" >> "$build_path" > +for file in "$@"; do > + name=$(basename "$build_dir/$file") > + "$src_dir/utils/gen-shader-header.py" "$name" "$build_dir/$file" >> "$build_path" > + echo >> "$build_path" > +done
diff --git a/utils/gen-shader-header.py b/utils/gen-shader-header.py new file mode 100755 index 00000000..6668e648 --- /dev/null +++ b/utils/gen-shader-header.py @@ -0,0 +1,38 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (C) 2025, Bryan O'Donoghue. +# +# Author: Bryan O'Donoghue <bryan.odonoghue@linaro.org> +# +# A python script which takes a list of shader files and converts into a C +# header. +# +import sys + +try: + with open(sys.argv[2]) as file: + data = file.read() + data_len = len(data) + + name = sys.argv[1].replace(".", "_") + name_len = name + "_len" + + j = 0 + print("unsigned char", name, "[] = {") + for ch in data: + print(f"0x{ord(ch):02x}, ", end="") + j = j + 1 + if j == 16: + print() + j = 0 + if j != 0: + print() + print("};") + + print() + print(f"const unsigned int {name_len}={data_len};") + +except FileNotFoundError: + print(f"File {sys.argv[2]} not found", file=sys.stderr) +except IOError: + print(f"Unable to read {sys.argv[2]}", file=sys.stderr) diff --git a/utils/gen-shader-headers.sh b/utils/gen-shader-headers.sh new file mode 100755 index 00000000..ca4f19f0 --- /dev/null +++ b/utils/gen-shader-headers.sh @@ -0,0 +1,44 @@ +#!/bin/sh +set -x + +if [ $# -lt 4 ]; then + echo "Invalid arg count must be >= 5" + exit 1 +fi +src_dir="$1"; shift +build_dir="$1"; shift +build_path=$build_dir/"$1"; shift + +cat <<EOF > "$build_path" +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* This file is auto-generated, do not edit! */ +/* + * Copyright (C) 2025, Linaro Ltd. + * + */ + +#pragma once + +EOF + +cat <<EOF >> "$build_path" +/* + * List the names of the shaders at the top of + * header for readability's sake + * +EOF + +for file in "$@"; do + echo "file is $file" + name=$(basename "$build_dir/$file" | tr '.' '_') + echo " * unsigned char $name;" >> "$build_path" +done + +echo "*/" >> "$build_path" + +echo "/* Hex encoded shader data */" >> "$build_path" +for file in "$@"; do + name=$(basename "$build_dir/$file") + "$src_dir/utils/gen-shader-header.py" "$name" "$build_dir/$file" >> "$build_path" + echo >> "$build_path" +done
Two simple script to generate a header that contains GLSL shaders translated to C arrays. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> --- utils/gen-shader-header.py | 38 ++++++++++++++++++++++++++++++++ utils/gen-shader-headers.sh | 44 +++++++++++++++++++++++++++++++++++++ 2 files changed, 82 insertions(+) create mode 100755 utils/gen-shader-header.py create mode 100755 utils/gen-shader-headers.sh