{"id":23238,"url":"https://patchwork.libcamera.org/api/patches/23238/?format=json","web_url":"https://patchwork.libcamera.org/patch/23238/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20250422215920.4297-26-bryan.odonoghue@linaro.org>","date":"2025-04-22T21:59:18","name":"[25/27] utils: gen-shader-headers: Add a utility to generate headers from shaders","commit_ref":null,"pull_url":null,"state":"rfc","archived":false,"hash":"f1ee1e1e0042bd67167928a551b1ecfc6d582608","submitter":{"id":175,"url":"https://patchwork.libcamera.org/api/people/175/?format=json","name":"Bryan O'Donoghue","email":"bryan.odonoghue@linaro.org"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/23238/mbox/","series":[{"id":5142,"url":"https://patchwork.libcamera.org/api/series/5142/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=5142","date":"2025-04-22T21:58:53","name":"RFC: Add in a eGL based GPUISP in libcamera","version":1,"mbox":"https://patchwork.libcamera.org/series/5142/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/23238/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/23238/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id C9889C3321\n\tfor ;\n\tTue, 22 Apr 2025 22:00:13 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id E17D568B41;\n\tWed, 23 Apr 2025 00:00:12 +0200 (CEST)","from mail-wm1-x32d.google.com (mail-wm1-x32d.google.com\n\t[IPv6:2a00:1450:4864:20::32d])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id A5DA868B30\n\tfor ;\n\tTue, 22 Apr 2025 23:59:47 +0200 (CEST)","by mail-wm1-x32d.google.com with SMTP id\n\t5b1f17b1804b1-43cec5cd73bso36790035e9.3\n\tfor ;\n\tTue, 22 Apr 2025 14:59:47 -0700 (PDT)","from inspiron14p-linux.ht.home (188-141-3-146.dynamic.upc.ie.\n\t[188.141.3.146]) by smtp.gmail.com with ESMTPSA id\n\t5b1f17b1804b1-44092d2eccesm2726615e9.20.2025.04.22.14.59.46\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tTue, 22 Apr 2025 14:59:46 -0700 (PDT)"],"Authentication-Results":"lancelot.ideasonboard.com; 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\n\tTue, 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,\n\tbod.linux@nxsw.ie","Subject":"[PATCH 25/27] utils: gen-shader-headers: Add a utility to generate\n\theaders 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","Content-Transfer-Encoding":"8bit","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"Two simple script to generate a header that contains GLSL shaders translated\nto C arrays.\n\nSigned-off-by: Bryan O'Donoghue \n---\n utils/gen-shader-header.py | 38 ++++++++++++++++++++++++++++++++++\n utils/gen-shader-headers.sh | 41 +++++++++++++++++++++++++++++++++++++\n 2 files changed, 79 insertions(+)\n create mode 100755 utils/gen-shader-header.py\n create mode 100755 utils/gen-shader-headers.sh","diff":"diff --git a/utils/gen-shader-header.py b/utils/gen-shader-header.py\nnew file mode 100755\nindex 00000000..a6799857\n--- /dev/null\n+++ b/utils/gen-shader-header.py\n@@ -0,0 +1,38 @@\n+#!/usr/bin/env python3\n+# SPDX-License-Identifier: GPL-2.0-or-later\n+# Copyright (C) 2025, Bryan O'Donoghue.\n+#\n+# Author: Bryan O'Donoghue \n+#\n+# A python script which takes a list of shader files and converts into a C\n+# header.\n+#\n+import sys\n+\n+try:\n+\twith open(sys.argv[2]) as file:\n+\t\tdata = file.read()\n+\t\tdata_len = len(data)\n+\n+\t\tname = sys.argv[1].replace(\".\", \"_\")\n+\t\tname_len = name + \"_len\"\n+\n+\t\tj = 0\n+\t\tprint (\"unsigned char\", name, \"[] = {\")\n+\t\tfor ch in data:\n+\t\t\tprint(f\"0x{ord(ch):02x}, \", end=\"\")\n+\t\t\tj = j + 1\n+\t\t\tif j == 16:\n+\t\t\t\tprint()\n+\t\t\t\tj = 0\n+\t\tif j != 0:\n+\t\t\tprint()\n+\t\tprint (\"};\")\n+\n+\t\tprint()\n+\t\tprint(f\"const unsigned int {name_len}={data_len};\")\n+\n+except FileNotFoundError:\n+\tprint(f\"File {sys.argv[2]} not found\", file=sys.stderr)\n+except IOError:\n+\tprint(f\"Unable to read {sys.argv[2]}\", file=sys.stderr)\ndiff --git a/utils/gen-shader-headers.sh b/utils/gen-shader-headers.sh\nnew file mode 100755\nindex 00000000..e1742165\n--- /dev/null\n+++ b/utils/gen-shader-headers.sh\n@@ -0,0 +1,41 @@\n+#!/bin/sh\n+\n+if [ $# -lt 4 ]; then\n+\techo \"Invalid arg count must be >= 5\"\n+\texit 1\n+fi\n+src_dir=\"$1\"; shift\n+dst_dir=\"$1\"; shift\n+dst_path=$dst_dir/\"$1\"; shift\n+\n+cat < \"$dst_path\"\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/* This file is auto-generated, do not edit! */\n+/*\n+ * Copyright (C) 2024, Linaro Ltd.\n+ *\n+ */\n+\n+#pragma once\n+\n+EOF\n+\n+cat <> \"$dst_path\"\n+/*\n+ * List the names of the shaders at the top of\n+ * header for readability's sake\n+ *\n+EOF\n+for file in $@; do\n+\tname=`basename $src_dir/src/$file | tr '.' '_'`\n+\techo \" * unsigned char $name;\" >> $dst_path\n+done\n+\n+echo \"*/\" >> $dst_path\n+\n+echo \"/* Hex encoded shader data */\" >> $dst_path\n+for file in $@; do\n+\tname=`basename $src_dir/src/$file`\n+\t$src_dir/utils/gen-shader-header.py $name $src_dir/src/$file >> $dst_path\n+\techo >> $dst_path\n+done\n","prefixes":["25/27"]}