[WIP] RetroShader =Computer Friendly!= Update 4

[torridgristle]

GZDoom Dev Build


Tired of GZDoom's sterile smoothness? So am I. There's just something aesthetically pleasing about low colour and low resolution graphics, and this shader does just that.

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Click the JPEG thumbnails for the crispy PNGs.





* D4D + Crunk Refinery

Download

RetroShader.pk3

Instructions:
This replaces the Lens Distortion shader in the recent GZDoom dev builds, so enable Lens Distortion under Display Options -> OpenGL Options -> Preferences. While you're there, set Sector Light Mode to Software. To make lights extra pronounced you can go to OpenGL Options -> Dynamic Light Options and set the Light Size to 2.

Customization:
Open up the PK3 in Slade and open lensdistortion.fp, you'll now see a neat list of variables you can change. Enable or disable effects with a simple 1 or 0, no more copy and pasting shaders in and out of files.

Additional Fun:
To get PlayStation vertex jiggles in GZDoom, open gzdoom.pk3, navigate to shaders/glsl/main.vp, and in a new line after "gl_Position = ProjectionMatrix * eyeCoordPos;" add "gl_Position.xy = floor(gl_Position.xy/gl_Position.w*(1./0.015))*0.015*gl_Position.w;//The Vertex Jiggler" Setting 0.015 lower will lower the jiggle, setting is higher will increase the jiggle. This affects sprites, HUDs, menus, and HUD messages as well.

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LowResPosterize & LowRes modified from compsci89's post at http://irrlicht.sourceforge.net/forum/v ... =9&t=45531
crt-curve modified from Wesley LaFerriere's code at https://github.com/wessles/GLSL-CRT/blo ... hader.frag
gameboy modified from Christopher Lawless' code at https://github.com/lawlessc/oliveretroshader
Gamma-adjusted posterization modified from http://www.geeks3d.com/20091027/shader- ... fect-glsl/
Vertex Jiggler from http://www.gamedev.net/topic/636769-sim ... &p=5017858

[Trusty McLegit]

Dude this thing is fucking awesome! A couple things you can do to make the experience more true to classic doom is to set tonemap mode to palette, as well as set cl_capfps to 1 in the console.

[Rachael]

Nice! It is fun seeing all the mods coming out of the post-processing code now that it has been released. Maybe in the future, we might get a platform for custom post-processing shaders that will actually be officially supported for mods.

[JPL]

Here's some video of the Playstation style vertex jiggles, as it's basically impossible to capture in screenshots:

[Nash]

To make lights extra pronounced you can go to OpenGL Options -> Dynamic Light Options and set the Light Size to 2.

Just as a "by the way", this setting has been removed and will be absent in future versions of GZDoom. :D

EDIT: Oh god the vertex jiggling really does look just as awful as how I remember it looking on the PlayStation. Now all you need to complete the look is the ugly-ass perspective texture distortion. Good job. :P

[torridgristle]

I've modified the vertex jiggler since then, but I've lost interest in it.

Code: Select all

	gl_Position = ProjectionMatrix * eyeCoordPos;
if ( gl_Position.w == 1 )//The vtexCoord Jiggler Disabled
		{
		vTexCoord = vTexCoord;
		}
else//The vtexCoord Jiggler Enabled	
{
	vTexCoord = floor(vTexCoord*(gl_Position.w*0.9))/(0.9*gl_Position.w);
}
if ( gl_Position.w == 1 )//The gl_Position Jiggler Disabled
		{
		gl_Position.xy = gl_Position.xy;
		}
else//The gl_Position Jiggler Enabled
{
//	gl_Position.xy = floor(gl_Position.xy*0.8)*(1/0.8);
	gl_Position.xy = floor(gl_Position.xy*(gl_Position.w*0.8))*(1/(gl_Position.w*0.8));
}

Can't say I'm pleased that someone is deciding that I shouldn't be able to adjust the size or intensity of GL lights for my own personal experience, the settings in lights.pk3 were arbitrarily designed to begin with.

[SigFloyd]

Just having the pixelated shader by itself is a goddamn dream come true.

[mumblemumble]

Absolutely awesome, now I can have that "Is that a nazi or a potted plant" feeling without having low resolution. I feel like I should combine this with the most fancy and visual map / mod, just for the sake of irony.

Any chance you can make a version with even more pixilation?

[Woolie Wool]

For me, the weapon sprites don't scale correctly and have "swimming" pixels and reduced detail, even though I set the aspect ratio in the pk3 to the correct value (16:10).

[Matt]

...this plus the new bloom is everything I've always wanted in a modernized Doom.

[Tormentor667]

This should so much end up in the official release of GZDoom!

[Nash]

dpJudas, how about a retro/PlayStation mode in GZDoom? X-P

[dpJudas]

Sorry, I have no plans adding such a thing. GZDoom does accept feature suggestions if they come with a pull request though.

One of the reasons I want to extend GLDEFS with support for screen space shaders is to allow stuff like this without requiring it to be part of gzdoom itself.

[Tormentor667]

GZDoom does accept feature suggestions if they come with a pull request though.

Can someone take care of that?

[JPL]

One of the reasons I want to extend GLDEFS with support for screen space shaders is to allow stuff like this without requiring it to be part of gzdoom itself.

I definitely support this route, for any visual treatment that isn't from the standard post-processing toolbox (the way, say, tone mapping and bloom are). Let mods create all the cool wild stuff that stretches beyond what an engine should do out-of-the-box.