ZDoom

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.

Spoiler: Screenshots

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Click the JPEG thumbnails for the crispy PNGs.





* D4D + Crunk Refinery

Download

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.

Spoiler: Credits

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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

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.

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.

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

torridgristle wrote: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

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

Code: Select all • Expand view

   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.

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

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?

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).

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

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

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

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.

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

Can someone take care of that?

dpJudas wrote: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.