From patchwork Sun May 3 11:39:59 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Mader X-Patchwork-Id: 26597 Return-Path: X-Original-To: parsemail@patchwork.libcamera.org Delivered-To: parsemail@patchwork.libcamera.org Received: from lancelot.ideasonboard.com (lancelot.ideasonboard.com [92.243.16.209]) by patchwork.libcamera.org (Postfix) with ESMTPS id C0BE9BE173 for ; Sun, 3 May 2026 11:40:45 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id A8ACB6301A; Sun, 3 May 2026 13:40:44 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=collabora.com header.i=robert.mader@collabora.com header.b="hq1Xz+Zd"; dkim-atps=neutral Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 4045762FD3 for ; Sun, 3 May 2026 13:40:42 +0200 (CEST) ARC-Seal: i=1; a=rsa-sha256; t=1777808439; cv=none; d=zohomail.com; s=zohoarc; b=j6h6TGMLAcx/xuI8QL3VYPsTjj1g0O9TJRH9oE+sS7I96twD3ckmA03BGizcPSbMMzeGeWuoRBB3VWpG/+nMR5Z43rNI4l0i1mvvXiHB3TQ7PgxNHfaa6AXqddiLyli/4fogs5VTzPVP9gwdw1y4HlkdyPdlLOvUoFsZqJIaqj0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1777808439; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:MIME-Version:Message-ID:Subject:Subject:To:To:Message-Id:Reply-To; bh=MqBVxeNG5pfmhlE/JktyJnim+T2x2Vt5cTBS/Cw9bmk=; b=h3yupoAW5lKSK44XldRKGY/vZSnkgsfSEHVwrqR+a3p8yy+SQs5I/MG2LT06TPNh+Z7CfbO63jy2OqCa2ma0CPGPdQuMl7KfS5MG2QrAoC3b/zFJBJxnkE3+r6OCL/v5Fyk/ZP8i/TCo0K1kZhw4ZbFVz8FA1wcOnAlUUTerMFg= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=robert.mader@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1777808438; s=zohomail; d=collabora.com; i=robert.mader@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:MIME-Version:Content-Transfer-Encoding:Message-Id:Reply-To; bh=MqBVxeNG5pfmhlE/JktyJnim+T2x2Vt5cTBS/Cw9bmk=; b=hq1Xz+ZdL7F15AdGVcqYx9LVCwmRF+HAKkzhcxyGJaQU6qBfn15KtyOKzD6QX2jb 3iVvZP92JTmczzsvqc80grVw3oehH3zPOxhawS1VpwhXwhoZsjlFe/oMnTJzWuak95n vwTXt+0Aje6Hi9RGmKpgLKKP5SEeGZn/YaJSf1Jo= Received: by mx.zohomail.com with SMTPS id 1777808437457238.40641044007816; Sun, 3 May 2026 04:40:37 -0700 (PDT) From: Robert Mader To: libcamera-devel@lists.libcamera.org Cc: Robert Mader Subject: [PATCH 0/3] software_isp: Implement DMABuf import for input buffers Date: Sun, 3 May 2026 13:39:59 +0200 Message-ID: <20260503114002.139255-1-robert.mader@collabora.com> X-Mailer: git-send-email 2.54.0 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" From the main commit: In many cases we can import the GPU-ISP input buffer, a dmabuf from v4l2, directly into EGL instead of mapping and uploading - i.e. copying - it. This reduces memory bandwidth and CPU usage and can slightly improve latency. Notes: Previous iterations of these patches have already been tested on various platforms, without known regressions and showing significant improvements. Robert Mader (3): egl: Add more parameters to createInputDMABufTexture2D() debayer_egl: Implement dmabuf import for input buffers debayer_egl: Sync output buffer after processing stats include/libcamera/internal/egl.h | 4 +-- src/libcamera/egl.cpp | 37 +++++++++++++++++----- src/libcamera/software_isp/debayer_egl.cpp | 35 ++++++++++---------- src/libcamera/software_isp/debayer_egl.h | 2 +- 4 files changed, 51 insertions(+), 27 deletions(-)