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[188.141.3.146]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-45b4e1d530esm69347225e9.0.2025.08.23.17.48.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 23 Aug 2025 17:48:51 -0700 (PDT) From: Bryan O'Donoghue Date: Sun, 24 Aug 2025 01:48:30 +0100 Subject: [PATCH v2 18/37] utils: gen-shader-headers: Add a utility to generate headers from shaders MIME-Version: 1.0 Message-Id: <20250824-b4-v0-5-2-gpuisp-v2-a-v2-18-96f4576c814e@linaro.org> References: <20250824-b4-v0-5-2-gpuisp-v2-a-v2-0-96f4576c814e@linaro.org> In-Reply-To: <20250824-b4-v0-5-2-gpuisp-v2-a-v2-0-96f4576c814e@linaro.org> To: libcamera-devel@lists.libcamera.org Cc: Bryan O'Donoghue X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2872; i=bryan.odonoghue@linaro.org; h=from:subject:message-id; bh=CJkgtdapTZZkXVFRMh84rmfBMzP61x7DaVl1inLelEQ=; b=owEBbQKS/ZANAwAKASJxO7Ohjcg6AcsmYgBoqmFfM1TFO5wMctE9ksyZi787qGq8r9gjAzKst 6E83i2+DnOJAjMEAAEKAB0WIQTmk/sqq6Nt4Rerb7QicTuzoY3IOgUCaKphXwAKCRAicTuzoY3I OqubD/9zhYvioAS8TFMLmSvMNfqVlL36MxHsc5dZFKxoE/8d/N4gbE5dTx/9dn8FCfLnrGI+1Tp HNcDz83EGxATBBv2F1VsTtGZ7S49tCh9fE5aqYBMgJ0WKd0oF0VW6QomdranSZ2pFuEuvrXyjAR Be4SFFu/wQRkaj+U0aCagsSe/exEZO55aPRxhnL0CEGJ6Dqkxi3v/rxi0bZOqcE9Ehtes86XrmD MWdZu0oCRDSxZI8l3Elo5BoVQ0IYF7McNPbThLlQM1Y7fI2BVgcyXhW4WBPvequvxoqEV2ow8wE FKzoHZBwHVmCrmYuOs9FsYgDM6temlIEXYRJ9JiqnTqPX6Jc4QdYhLvZEfI6IefrHQ1fYSufpez NbUnvaRUhNnHDYikOt2VF1ypLv3bfl7WJR4v7hiD/RmWg/DPzp90bxHHK+53PLZkpvqFsBUT0Fy w/ttqjJ/tMDYqhoIAU7ApkrVp1Tj9NOOcjMDDJEokpqtnR07/xGZUxpiqnJlz/wDcCAgq4pzCnc GFpNbK76ekmc5FXUxGVL0YPFlukDhGjSYQkGkrRcnZ1otowsJuTFjWkp/ARU+M9+0DWvE1S44qk XSaVlo7dvQBgOBllnOwGqgP6NYbTtxpgqke1uL/29qZdj7zvFwLOnqJmQpXu6dDNT+VgMCnkIN9 VNKkcneFIvZt9gg== X-Developer-Key: i=bryan.odonoghue@linaro.org; a=openpgp; fpr=E693FB2AABA36DE117AB6FB422713BB3A18DC83A 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 | 44 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 82 insertions(+) diff --git a/utils/gen-shader-header.py b/utils/gen-shader-header.py new file mode 100755 index 0000000000000000000000000000000000000000..6668e648f20db39e03a33a8309fb068a5124961b --- /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 0000000000000000000000000000000000000000..ca4f19f07616c97f1d69fad7450c6e63f0e59407 --- /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/"$1"; shift + +cat < "$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 <> "$build_path" +/* + * List the names of the shaders at the top of + * header for readability's sake + * +EOF + +for file in "$@"; 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