ZDoom

I'm glad it worked despite my shoddy explanation :wink:

class ShaderTimer : EventHandler
{
	override void RenderOverlay(RenderEvent e)
	{
		// thanks to Pixel Eater from the ZDoom Forums!!!
		float timer = (gametic +  e.FracTic) * 1 / 35;
		// set timer uniforms for the shaders
		Shader.SetUniform1f(players[consoleplayer], "PostVignette", "timer", timer);
		Shader.SetUniform1f(players[consoleplayer], "PostNoise", "timer", timer);
	}
}

gameinfo
{
	AddEventHandlers = "ShaderTimer"
}

Thanks Pixel Eater!

I could figure it out.

You need to have something like this in your ZSCRIPT lump:
[code]class ShaderTimer : EventHandler
{
override void RenderOverlay(RenderEvent e)
{
// thanks to Pixel Eater from the ZDoom Forums!!!
float timer = (gametic + e.FracTic) * 1 / 35;
// set timer uniforms for the shaders
Shader.SetUniform1f(players[consoleplayer], "PostVignette", "timer", timer);
Shader.SetUniform1f(players[consoleplayer], "PostNoise", "timer", timer);
}
}[/code]

Then you need to add your event handler class in the "gameinfo" block inside your "mapinfo" lump
[code]gameinfo
{
AddEventHandlers = "ShaderTimer"
}[/code]

Again: Thank you very much... Couldn't have figured it out without your help.

Shader.SetUniform1f( p, "Shader Name", "timer", ( gametic + e.FracTic ) * 1 / 35 ) ;

In your Zscript file you'll need to add the line:

[code]Shader.SetUniform1f( p, "Shader Name", "timer", ( gametic + e.FracTic ) * 1 / 35 ) ;[/code]
I'm not good with terminology but it should go in the "event block?"

uniform float timer;

Hey everybody,

I went out to add some nice post processing shaders to GzDoom. Right now I'm working on a vignette shader and I try to animate the vignette.
As far as I understand the wiki I should be able to use a timer uniform through just defining it at the top of my shader.

But the mentioned [code]uniform float timer;[/code] doesn't do anything. It seams to always be 0...

Is the timer not working for post processing shaders or am I missing something? Could someone please point me in the right direction?
I spent hours to get this working without results...

Any help is much appreciated.

Cheers
HG