// shaders stuff

extend Class SWWMHandler
{
	static clearscope void ClearAllShaders( PlayerInfo p )
	{
		Shader.SetEnabled(p,"WaterWarp",false);
		Shader.SetEnabled(p,"LavaWarp",false);
		Shader.SetEnabled(p,"SlimeWarp",false);
		Shader.SetEnabled(p,"ZoomBlur",false);
		Shader.SetEnabled(p,"RagekitShader",false);
		Shader.SetEnabled(p,"GhostShader",false);
		Shader.SetEnabled(p,"InvinciShader",false);
		Shader.SetEnabled(p,"Glitch",false);
		Shader.SetEnabled(p,"Grain",false);
	}

	private ui void RenderShaders( RenderEvent e )
	{
		PlayerInfo p = players[consoleplayer];
		let mo = p.mo;
		if ( !mo ) return;
		bool pc = (p.camera == mo);
		let rage = RagekitPower(mo.FindInventory("RagekitPower"));
		if ( pc && rage && swwm_shaders )
		{
			if ( swwm_rageshader )
			{
				Shader.SetEnabled(p,"RagekitShader",false);
				Shader.SetEnabled(p,"RagekitAltShader",true);
				Shader.SetUniform1f(p,"RagekitAltShader","timer",(gametic+e.FracTic)/GameTicRate);
				double xstrastr = 1.+max(0,rage.lastpulse-(gametic+e.Fractic))/35.;
				Shader.SetUniform1f(p,"RagekitAltShader","xtrastr",xstrastr**2.);
			}
			else
			{
				Shader.SetEnabled(p,"RagekitAltShader",false);
				Shader.SetEnabled(p,"RagekitShader",true);
				Shader.SetUniform1f(p,"RagekitShader","timer",(gametic+e.FracTic)/GameTicRate);
				double xstrastr = 1.+max(0,rage.lastpulse-(gametic+e.Fractic))/35.;
				Shader.SetUniform1f(p,"RagekitShader","xtrastr",xstrastr**2.);
			}
		}
		else
		{
			Shader.SetEnabled(p,"RagekitShader",false);
			Shader.SetEnabled(p,"RagekitAltShader",false);
		}
		let ghost = GhostPower(mo.FindInventory("GhostPower"));
		if ( pc && ghost && swwm_shaders ) Shader.SetEnabled(p,"GhostShader",true);
		else Shader.SetEnabled(p,"GhostShader",false);
		let sunny = InvinciballPower(mo.FindInventory("InvinciballPower"));
		if ( pc && sunny && swwm_shaders )
		{
			Shader.SetEnabled(p,"InvinciShader",true);
			double str = max(0,sunny.lastpulse-(gametic+e.Fractic))/35.;
			Shader.SetUniform1f(p,"InvinciShader","str",str);
		}
		else Shader.SetEnabled(p,"InvinciShader",false);
		let coat = BarrierPower(mo.FindInventory("BarrierPower"));
		if ( pc && coat && swwm_shaders )
		{
			Shader.SetEnabled(p,"BarrierShader",true);
			Shader.SetUniform1f(p,"BarrierShader","timer",(gametic+e.FracTic)/GameTicRate);
		}
		else Shader.SetEnabled(p,"BarrierShader",false);
		if ( pc && (mo is 'Demolitionist') && swwm_shaders )
		{
			let demo = Demolitionist(mo);
			if ( demo.lastunder == Demolitionist.UNDER_WATER )
			{
				Shader.SetEnabled(p,"WaterWarp",true);
				Shader.SetUniform1f(p,"WaterWarp","timer",(gametic+e.FracTic)/GameTicRate);
				Shader.SetUniform1f(p,"WaterWarp","dfact",coat?.25:1.);
				Shader.SetUniform3f(p,"WaterWarp","lightcol",(demo.undercol.r/255.,demo.undercol.g/255.,demo.undercol.b/255.));

			}
			else Shader.SetEnabled(p,"WaterWarp",false);
			if ( demo.lastunder == Demolitionist.UNDER_LAVA )
			{
				Shader.SetEnabled(p,"LavaWarp",true);
				Shader.SetUniform1f(p,"LavaWarp","timer",(gametic+e.FracTic)/GameTicRate);
				Shader.SetUniform1f(p,"LavaWarp","dfact",coat?.25:1.);
				Shader.SetUniform3f(p,"LavaWarp","lightcol",(demo.undercol.r/255.,demo.undercol.g/255.,demo.undercol.b/255.));
			}
			else Shader.SetEnabled(p,"LavaWarp",false);
			if ( demo.lastunder == Demolitionist.UNDER_SLIME )
			{
				Shader.SetEnabled(p,"SlimeWarp",true);
				Shader.SetUniform1f(p,"SlimeWarp","timer",(gametic+e.FracTic)/GameTicRate);
				Shader.SetUniform1f(p,"SlimeWarp","dfact",coat?.25:1.);
				Shader.SetUniform3f(p,"SlimeWarp","lightcol",(demo.undercol.r/255.,demo.undercol.g/255.,demo.undercol.b/255.));
			}
			else Shader.SetEnabled(p,"SlimeWarp",false);
			int lastdmg = (demo.Health>0)?demo.lastdamage:Random[Flicker](60,80);
			int lastdmgtic = (demo.Health>0)?demo.lastdamagetic:(gametic+Random[Flicker](30,20));
			double noiz = min(lastdmg*.09*max(0,(lastdmgtic-(gametic+e.Fractic))/35.),.5);
			Shader.SetEnabled(p,"Glitch",noiz>0);
			Shader.SetEnabled(p,"Grain",noiz>0);
			if ( noiz > 0 )
			{
				Shader.SetUniform1f(p,"Glitch","Timer",(gametic+e.FracTic)/GameTicRate);
				Shader.SetUniform1f(p,"Grain","Timer",(gametic+e.FracTic)/GameTicRate);
				Shader.SetUniform1f(p,"Grain","ni",noiz);
				noiz = min(lastdmg*.08*max(0,(lastdmgtic-(gametic+e.Fractic))/35.),.8);
				Shader.SetUniform1f(p,"Glitch","str1",noiz);
				noiz = min(lastdmg*.03*max(0,(lastdmgtic-(gametic+e.Fractic))/35.),3.5);
				Shader.SetUniform1f(p,"Glitch","str2",noiz);
			}
			if ( !demo.InStateSequence(demo.CurState,demo.FindState("Dash")) )
			{
				Shader.SetEnabled(p,"ZoomBlur",false);
				return;
			}
			Shader.SetEnabled(p,"ZoomBlur",true);
			Vector3 vel = demo.vel+demo.dashdir*demo.dashboost;
			double baumpu = max(0.,(demo.bumptic-(gametic+e.Fractic))/35.);
			vel += demo.dashdir*baumpu;
			double spd = vel.length();
			Vector3 worlddir = vel/spd;
			Shader.SetUniform1f(p,"ZoomBlur","Fade",clamp((spd-20.)/60.,0.,1.));
			double str = min(spd/40.,15.);
			Vector3 x, y, z;
			[x, y, z] = swwm_CoordUtil.GetAxes(e.ViewPitch,e.ViewAngle,e.ViewRoll);
			Vector3 reldir = (worlddir dot y, worlddir dot z, worlddir dot x);
			Vector2 centerspot = (.5+reldir.x*.5,.5+reldir.y*.5);
			if ( reldir.z < 0 )
			{
				centerspot.x = 1.-centerspot.x;
				centerspot.y = 1.-centerspot.y;
				str *= -1;
			}
			Shader.SetUniform1f(p,"ZoomBlur","Str",str);
			Shader.SetUniform2f(p,"ZoomBlur","CenterSpot",centerspot);
		}
		else
		{
			Shader.SetEnabled(p,"WaterWarp",false);
			Shader.SetEnabled(p,"LavaWarp",false);
			Shader.SetEnabled(p,"SlimeWarp",false);
			Shader.SetEnabled(p,"Glitch",false);
			Shader.SetEnabled(p,"Grain",false);
			Shader.SetEnabled(p,"ZoomBlur",false);
		}
	}
}