Well. . . These aren't really problems. . .

Mako Eyes · December 31st, 2002, 02:45

Just a couple of questions I've been wondering about. Since I'm not allowed to post on the main ePSXe board, I'll put them here. . .

1: Why does enabling full bilinear filtering in a hardware GPU make 2D objects look tiled and have lines running through them, and enabling it in a software GPU make things look so nice and smooth?

2: Is there any way to emulate the pocket station? I would really like to get my FF8 Chocobo stronger.

I was just curious, that's all. . .

**Betamax** · December 31st, 2002, 03:13

2: Not at present.

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**Kane** · December 31st, 2002, 03:49

> 1: Why does enabling full bilinear filtering in a hardware GPU make 2D objects look tiled and have lines running through them, and enabling it in a software GPU make things look so nice and smooth?

Soft GPUs can't bilinear filter textures. They filter full screen. H/W GPUs are very slow at doing that kind of thing, but they make up for if with texture filtering and generaly faster speed and better image quality.
The reason for the glitches is simple: PSX games aren't designed with filtering in mind.

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**Shadow Lady** · January 1st, 2003, 18:54

1. Since when can u use bilinear filtering on a SoftGPU?

2. there was an emu but was not exactly compatible whit the current emus :]

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liquid · January 2nd, 2003, 09:24

To answer you question SL, some cards *cough* Nvidia *cough* applies an automatic screen filter when the screen is stretched in software. You can use the "use system memory" option or disable direct draw to get rid of the automatic screen filtering. Note: It will be pretty slow if you do this (you'll get around GDI speeds). It's better to use the Super 2xSal option instead for improving crispness

as for the original question, bilinear filtering has problems with the way how the PSX treats textures, where the texture sometimes falls outside of the polygon. So when it goes to filter the texture it sometimes ends up filtering other areas not intended to be filtered.

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Last edited by liquid; January 2nd, 2003 at 09:34..

**Shadow Lady** · January 2nd, 2003, 23:58

Quote:

Originally posted by liquid
To answer you question SL, some cards *cough* Nvidia *cough* applies an automatic screen filter when the screen is stretched in software. You can use the "use system memory" option or disable direct draw to get rid of the automatic screen filtering. Note: It will be pretty slow if you do this (you'll get around GDI speeds). It's better to use the Super 2xSal option instead for improving crispness

ok, you are right, but that filter isnt called Bilinear Filtering

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December 31st, 2002, 02:45	#1
Mako Eyes Refrigerate after opening Join Date: Aug 2002 Location: Newfoundland, Canada. Posts: 1,369	Well. . . These aren't really problems. . . Just a couple of questions I've been wondering about. Since I'm not allowed to post on the main ePSXe board, I'll put them here. . . 1: Why does enabling full bilinear filtering in a hardware GPU make 2D objects look tiled and have lines running through them, and enabling it in a software GPU make things look so nice and smooth? 2: Is there any way to emulate the pocket station? I would really like to get my FF8 Chocobo stronger. I was just curious, that's all. . .

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December 31st, 2002, 03:13	#2
Betamax Resident Movie Critic Join Date: Apr 2001 Location: Belfast, Northern Ireland Posts: 9,506	2: Not at present. __________________ Superior marketing of an inferior product will always win over inferior marketing of a superior product.

December 31st, 2002, 03:49	#3
Kane 邪魔ゎ指せない Join Date: Jan 2002 Location: Gosport, England Posts: 26,303	> 1: Why does enabling full bilinear filtering in a hardware GPU make 2D objects look tiled and have lines running through them, and enabling it in a software GPU make things look so nice and smooth? Soft GPUs can't bilinear filter textures. They filter full screen. H/W GPUs are very slow at doing that kind of thing, but they make up for if with texture filtering and generaly faster speed and better image quality. The reason for the glitches is simple: PSX games aren't designed with filtering in mind. __________________ >Site Live< Pop over to my site for help with setting up PSX emulators. Help for the Final Fantasies and other RPGs avalaible Celes: (Desktop) Phenom II X4, 4Gb DDR2, GeForce 8800 GTS 320Mb, 32Gb OCZ Vertex SSD, 500Gb RAID HDD, Windows 7 Home Premium Erika: (MCPC) Revo3610, Windows 7 Home Premium Kimiko: (Craptop) HP Mini 210

January 1st, 2003, 18:54	#4
Shadow Lady Advanced Newbie Join Date: Jul 2001 Location: Bogotá... not that it matters... Posts: 5,797	1. Since when can u use bilinear filtering on a SoftGPU? 2. there was an emu but was not exactly compatible whit the current emus :] __________________ Main Rig: Pentium Dual-Core E2160 @ 2.8GHz -- 9600GT @ 715/1033MHz -- 4GB DDR2-667 4-4-4-12 -- Windows Server 2008 SP2 Collecting dust: AMD Athlon XP 2600+ -- ATI Radeon 9500 Pro -- SB Live 5.1 Digital -- 2.5GB DDR 2-2-2-5 Ram -- Windows 2003 server r2 SP1

January 2nd, 2003, 09:24	#5
liquid Ebichu! Join Date: Apr 2001 Location: Tampa Bay, Florida Posts: 2,091	To answer you question SL, some cards cough Nvidia cough applies an automatic screen filter when the screen is stretched in software. You can use the "use system memory" option or disable direct draw to get rid of the automatic screen filtering. Note: It will be pretty slow if you do this (you'll get around GDI speeds). It's better to use the Super 2xSal option instead for improving crispness as for the original question, bilinear filtering has problems with the way how the PSX treats textures, where the texture sometimes falls outside of the polygon. So when it goes to filter the texture it sometimes ends up filtering other areas not intended to be filtered. __________________ ...no sig for now Last edited by liquid; January 2nd, 2003 at 09:34..