From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id E17E347BFC for ; Fri, 2 Feb 2024 20:16:33 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 5D16A68D0B5; Fri, 2 Feb 2024 22:16:30 +0200 (EET) Received: from mail-lj1-f175.google.com (mail-lj1-f175.google.com [209.85.208.175]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 06E9968CB44 for ; Fri, 2 Feb 2024 22:16:24 +0200 (EET) Received: by mail-lj1-f175.google.com with SMTP id 38308e7fff4ca-2d07d74be60so22015501fa.3 for ; Fri, 02 Feb 2024 12:16:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1706904982; x=1707509782; darn=ffmpeg.org; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :from:to:cc:subject:date:message-id:reply-to; bh=z5fWWNdaK3ZXMffDrZHVZ8Qdv9LEBXVJpck90CqYYU0=; b=ZBL939+hwe9EFkNuI20hIsW44yLNcG962mQs+bVAEg7RahswrCJKsnk8dWlNo/VNxS ebrRJaXf3FHM/WHSYr+RXfqISWzCOKcd6zZsAt+OBIyzb7b8twbGDoBi/tLrg22IiDhM g9rwPr3uvsQLD9e1xUIl0A/+/nGETxpESeil/PFkSHrEERZJgUNbgIr4wPhvhR5Ii3Gv p87LL8X6OlS/PSsH9XlhOEgB0AJuferGdWgRv4uYSLUs9xFEh7dJSQYP5rhUBq6fKWYU BFNqijQbhx030BXs77bf4p7ox+RyKvcWAn40hM1Yr8dGgZjxYz3aoRNKVgT8edozNKm8 fvQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1706904982; x=1707509782; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=z5fWWNdaK3ZXMffDrZHVZ8Qdv9LEBXVJpck90CqYYU0=; b=PgU2TeGwOQQFhH7VeH5Pnkf0OJ2m8AfMQRl25iTtm6OPweMLzwykdLQ2arYDWehRHL S1W9HHVpWq3+i60LwlhrX/FzWOOBWGe+vckHXDYuDE5UgvkVGj8uzKCPKTzrn5RSahnn JdzwyfDxkxouxV1H1tZsvotupf+2X8Nq4FEQ6Ta14HzLcIc3V2v9AsI/fhuZ8XorFWMP IfkD3TtNTpKj/AJpQHIuB9EMIR4qL3B5s4WECkf/5baKkdV66T4d+lmfgWYI7Z55glxO p5b4P3Kc1zYbACPsbPRGcJBwH0i46qrQaZExmwBaK1TsEvjWaQneQ3gZCjYnASrHvuvU 3wNg== X-Gm-Message-State: AOJu0YzYA70U9mgGxBggXn0Jec+8+fKFBjQWeV94Ag8QoEizIA5mEw7l Z74VmHsdp0U4eNH5CVXaquQDcZRAN26fntVGwEPXy3DEAHWcYwNj0zQ/35NWT9ARA79GOZVa00g kXeaKURrH2kEcct7MlgN7XxoDFGp30nQDtwppUA== X-Google-Smtp-Source: AGHT+IF/78wjMs3xJ66FX0+nN2clOnYCQkexU3yj8SccFsLuU65q85nsfDPWHJfrhVD1wmJU0k1JZCPqhRremfW1uR0= X-Received: by 2002:a05:651c:454:b0:2cf:1395:5d69 with SMTP id g20-20020a05651c045400b002cf13955d69mr1695386ljg.52.1706904981837; Fri, 02 Feb 2024 12:16:21 -0800 (PST) MIME-Version: 1.0 References: <20240202011051.46786-1-connorbworley@gmail.com> In-Reply-To: <20240202011051.46786-1-connorbworley@gmail.com> From: Connor Worley Date: Fri, 2 Feb 2024 12:15:55 -0800 Message-ID: To: ffmpeg-devel@ffmpeg.org X-Content-Filtered-By: Mailman/MimeDel 2.1.29 Subject: Re: [FFmpeg-devel] [PATCH v2 1/2] lavc/texturedsp: fix premult2straight inversion X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: Linked are some demo files. I converted a sample to DDS with texconv.exe -f DXT4 -pmalpha sample.png I converted it back to PNG against master with ffmpeg -i sample.dds master.png I converted it back to PNG against this patch with ffmpeg -i sample.dds patch.png The color in master.png is dark due to being premultiplied twice. The color in patch.png is true to sample.png. https://connorworley.com/sample.png https://connorworley.com/sample.dds https://connorworley.com/master.png https://connorworley.com/patch.png -- Connor Worley _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".