Search found 107 matches

by feos
Sun Apr 01, 2018 10:30 am
Forum: NESemdev
Topic: NES 2.0 Additions Proposal
Replies: 224
Views: 125954

Re: NES 2.0 Additions Proposal

By request, reposting my brief summary of what dendy is, originally posted here: http://tasvideos.org/forum/viewtopic.php?p=467169#467169 Here is a map of countries and video signal standards used in them. Note how huge the PAL/SECAM zone is. Compare it to which countries the NES/Famicom console wa...
by feos
Wed Feb 15, 2017 10:48 am
Forum: NESdev
Topic: NTSC pattern torture test ROM
Replies: 27
Views: 21850

Re: NTSC pattern torture test ROM

Right, and the source (aka plain emulator output)?
by feos
Wed Feb 15, 2017 8:09 am
Forum: NESdev
Topic: NTSC pattern torture test ROM
Replies: 27
Views: 21850

Re: NTSC pattern torture test ROM

dougeff wrote:I did some tests with very similar colors, and I find that dithering with a slightly lighter shade of the exact same hue (15 with 25) produces smoother look, even on NTSC. Still getting diagonal lines on most of the patterns though.
Pictures?
by feos
Tue Jan 24, 2017 7:44 am
Forum: NESemdev
Topic: Mesen - NES Emulator
Replies: 793
Views: 323349

Re: Mesen - NES Emulator

It's the speed of the 2x resolution, and yes, it's dual core.
by feos
Sat Jan 14, 2017 5:38 pm
Forum: NESemdev
Topic: Mesen - NES Emulator
Replies: 793
Views: 323349

Re: Mesen - NES Emulator

Also, I didn't mean dropping DX11, but probably using lower versions?
by feos
Sat Jan 14, 2017 5:31 pm
Forum: NESemdev
Topic: Mesen - NES Emulator
Replies: 793
Views: 323349

Re: Mesen - NES Emulator

Running faster than full speed on my machine is an indication of a really fast emulator core (or filter). My computer is from 2008 (it was the cheapest one in the store).
by feos
Sat Jan 14, 2017 7:54 am
Forum: NESemdev
Topic: Mesen - NES Emulator
Replies: 793
Views: 323349

Re: Mesen - NES Emulator

Is dx11 a hard requirement? Also I dunno how it's set up in Mesen, but won't it work like, say, in video players? They all can handle YUV on any machine.
by feos
Sat Jan 14, 2017 2:57 am
Forum: NESemdev
Topic: Mesen - NES Emulator
Replies: 793
Views: 323349

Re: Mesen - NES Emulator

What if Mesen outputs YUV signal directly instead of RGB? That will skip the decoding step and probably speed things up a bit. And in case you're using an index-based palette approach for the picture, you could generate YUV internally that way as well, with no need to encode initial RGB signal either.
by feos
Fri Jan 06, 2017 11:51 am
Forum: NESemdev
Topic: Mesen - NES Emulator
Replies: 793
Views: 323349

Re: Mesen - NES Emulator

I recorded the video with the ntsc filter, and on my machine filter alone works at 20 fps, and with avi dumping it becomes even less. Try to make it lag and then record. I tried x64 MPC on Win7, x86 MPC and VirtualDub on WinXP, they all give clear desync and/or video speed up for me. My implementati...
by feos
Fri Jan 06, 2017 11:19 am
Forum: NESemdev
Topic: Mesen - NES Emulator
Replies: 793
Views: 323349

Re: Mesen - NES Emulator

AVI dumper produces heavy av desync for me with both codecs (haven't tried uncompressed). The video looks sped up inconsistently. Also, Sour, why didn't you make use of the constexpr functionality the same as it's used in Bisqwit's original method? That thing makes float calculations happen on compi...
by feos
Thu Dec 29, 2016 10:24 pm
Forum: NESdev
Topic: NTSC pattern torture test ROM
Replies: 27
Views: 21850

Re: NTSC pattern torture test ROM

It is not only the matter of modifying the constant. You have to reverse the phase of the colorburst for every other scanline, too (or something like that, I don't remember the specifics). Yes. Here's what I used in my FCEUX attempt (with a lookup table and 768 pixel long line): const float phasex ...
by feos
Thu Dec 29, 2016 12:53 pm
Forum: NESdev
Topic: NTSC pattern torture test ROM
Replies: 27
Views: 21850

Re: NTSC pattern torture test ROM

I meant the constants in the Bisqwit's filter, and yes, myself and Eugene.S will run any tests that are needed.

We don't exactly have PAL NES, but this thing that we have should work very well, since Dendy uses a clone of PAL PPU:
https://forums.nesdev.com/viewtopic.php?f=9&t=14861
by feos
Thu Dec 29, 2016 8:26 am
Forum: NESdev
Topic: NTSC pattern torture test ROM
Replies: 27
Views: 21850

Re: NTSC pattern torture test ROM

I'd be really grateful if someone modifies the constants to the PAL standard. The QuickBASIC code has a newer version of the filter that runs much much faster than the C++ version does (if the language difference is ignored), because it updates a running variable only once per channel per pixel, ins...
by feos
Wed Dec 28, 2016 9:02 am
Forum: NESdev
Topic: New NTSC decoder with integer-only math (short C++ code)
Replies: 30
Views: 23383

Re: New NTSC decoder with integer-only math (short C++ code)

Bisqwit, can you run your filter against this ROM:
viewtopic.php?f=2&t=15080
by feos
Fri Sep 30, 2016 10:58 am
Forum: NESemdev
Topic: PAL color palette emulation
Replies: 79
Views: 38135

Re: PAL color palette emulation

That circle is worng, but the squares from the other test are correct. Obvious mismatch of what test roms are trying to test.