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[188.141.3.146]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-44092d2eccesm2726615e9.20.2025.04.22.14.59.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Apr 2025 14:59:46 -0700 (PDT) From: Bryan O'Donoghue To: libcamera-devel@lists.libcamera.org Cc: hdegoede@redhat.com, mzamazal@redhat.com, bryan.odonoghue@linaro.org, bod.linux@nxsw.ie Subject: [PATCH 25/27] utils: gen-shader-headers: Add a utility to generate headers from shaders Date: Tue, 22 Apr 2025 22:59:18 +0100 Message-ID: <20250422215920.4297-26-bryan.odonoghue@linaro.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250422215920.4297-1-bryan.odonoghue@linaro.org> References: <20250422215920.4297-1-bryan.odonoghue@linaro.org> MIME-Version: 1.0 X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" Two simple script to generate a header that contains GLSL shaders translated to C arrays. Signed-off-by: Bryan O'Donoghue --- utils/gen-shader-header.py | 38 ++++++++++++++++++++++++++++++++++ utils/gen-shader-headers.sh | 41 +++++++++++++++++++++++++++++++++++++ 2 files changed, 79 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..a6799857 --- /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 +# +# 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..e1742165 --- /dev/null +++ b/utils/gen-shader-headers.sh @@ -0,0 +1,41 @@ +#!/bin/sh + +if [ $# -lt 4 ]; then + echo "Invalid arg count must be >= 5" + exit 1 +fi +src_dir="$1"; shift +dst_dir="$1"; shift +dst_path=$dst_dir/"$1"; shift + +cat < "$dst_path" +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* This file is auto-generated, do not edit! */ +/* + * Copyright (C) 2024, Linaro Ltd. + * + */ + +#pragma once + +EOF + +cat <> "$dst_path" +/* + * List the names of the shaders at the top of + * header for readability's sake + * +EOF +for file in $@; do + name=`basename $src_dir/src/$file | tr '.' '_'` + echo " * unsigned char $name;" >> $dst_path +done + +echo "*/" >> $dst_path + +echo "/* Hex encoded shader data */" >> $dst_path +for file in $@; do + name=`basename $src_dir/src/$file` + $src_dir/utils/gen-shader-header.py $name $src_dir/src/$file >> $dst_path + echo >> $dst_path +done