|Re: [hatari-devel] Pixel aspekt ratio|
[ Thread Index |
| More lists.tuxfamily.org/hatari-devel Archives
- To: hatari-devel@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [hatari-devel] Pixel aspekt ratio
- From: Troed Sångberg <troed@xxxxxxxxxxx>
- Date: Thu, 12 Nov 2015 16:14:24 +0100
- Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:content-type; bh=Sw75FUzDG66+K2AjHaoHqSVYAp/rTlDQhymayDXHhPw=; b=dQ8zspfx2sQA/EFsc3uFdDfR7fxBeJ+TB++YPr4Z9auOOV9hlRP9/+OKeIr0KuIqoN N0Nr6IuCQBvqCeYEU0OIRlth/wwfQSNGBnmTEuyJWMeRxyoQTXWlIzmh5FQ4jn8M83Dw 0WQw0kG++A0PhHk/pHHDgoY0NCADKTI6M8Myr2Fd0pzgKIPnh/v2MjNiHBPWNuu+pDS2 nNj4NdTxCvn30J4J/pVnZ4Idd6tEi/Gk99k3Dj5FummcpLl5dwlBq0wW2Dzgj3z+AGqR maCgaHGumlDVN8UnWRXIb/ErfGPVo/wC5QlntE27DrdSyn7rKjwXwiPwPJZF4LXRPooT fLWg==
- Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sangberg_se.20150623.gappssmtp.com; s=20150623; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:content-type; bh=Sw75FUzDG66+K2AjHaoHqSVYAp/rTlDQhymayDXHhPw=; b=i8641+3pBdG0+OVAgCMbMMFooWVFJg/ZKOQlYYfdc46q2tdayN3bXVKKADepjxiPu/ DeCk9Ruqrn8sUijLSeaVoO2Vb90+tCqOQhVl+KkAlPr+bch+73PweCLZJwlBMs+C5Dbn 5iLLJtLyqkjT0sMqGBWIwEob7q4FuS4BWgdwmd/O7U15fjNj2x/OQsmJqNkjKa90W9qx kJu7DNYVt9Kf+Ccx5AHQtItHUY2ocYYeEHhfZkeOGKAjbb0Qfbv/MFPBH/b4zt+YamlI YSZe1Jv+cv0NpVLRYmtifbFQKVd6pNr5Y/CXTAI/Gtj8ZNInPIWNmwXVgOlu3ZpQ/vKn pE4Q==
Of course there is. NTSC 525 lines, PAL 625 lines, from top to bottom evenly spaced. The reason why Atari decided to "start" the NTSC screen at a specific line, the PAL screen at another line etc to make sure the full usable screen was visible on any screen the user might connect to.
_Some_ monitors included the possibility to "zoom" in on the picture since the decisions were made with TV sets in mind, but that doesn't change what the designed - "correct" - pixel aspect ratio of the platform was.
I would very much like to have the option (using SDL2) to scale the vertical resolution by 1.11 in Hatari. I can't have been the only one to have been caught a bit of guard making something on a modern computer which looks good in the emulator but didn't when I ran it on target hardware. As Nicolas points out this will not be pixel perfect so it's not something to enable by default.
(As to what the exact value should be I can't offer more input than the previous quote by an Atari ST pixel artist which seems to have perfectly matched what I saw myself)