Initial commit

lua/postprocess/sunbeams.lua

@@ -0,0 +1,77 @@
+
+local matSunbeams = Material( "pp/sunbeams" )
+matSunbeams:SetTexture( "$fbtexture", render.GetScreenEffectTexture() )
+
+--[[---------------------------------------------------------
+	Register the convars that will control this effect
+-----------------------------------------------------------]]
+local pp_sunbeams = CreateClientConVar( "pp_sunbeams", "0", false, false )
+local pp_sunbeams_darken = CreateClientConVar( "pp_sunbeams_darken", "0.95", true, false )
+local pp_sunbeams_multiply = CreateClientConVar( "pp_sunbeams_multiply", "1.0", true, false )
+local pp_sunbeams_sunsize = CreateClientConVar( "pp_sunbeams_sunsize", "0.075", true, false )
+
+
+function DrawSunbeams( darken, multiply, sunsize, sunx, suny )
+
+	if ( !render.SupportsPixelShaders_2_0() ) then return end
+
+	render.CopyRenderTargetToTexture( render.GetScreenEffectTexture() )
+
+	matSunbeams:SetFloat( "$darken", darken )
+	matSunbeams:SetFloat( "$multiply", multiply )
+	matSunbeams:SetFloat( "$sunx", sunx )
+	matSunbeams:SetFloat( "$suny", suny )
+	matSunbeams:SetFloat( "$sunsize", sunsize )
+
+	render.SetMaterial( matSunbeams )
+	render.DrawScreenQuad()
+
+end
+
+hook.Add( "RenderScreenspaceEffects", "RenderSunbeams", function()
+
+	if ( !pp_sunbeams:GetBool() ) then return end
+	if ( !GAMEMODE:PostProcessPermitted( "sunbeams" ) ) then return end
+	if ( !render.SupportsPixelShaders_2_0() ) then return end
+
+	local sun = util.GetSunInfo()
+
+	if ( !sun ) then return end
+	if ( sun.obstruction == 0 ) then return end
+
+	local sunpos = EyePos() + sun.direction * 4096
+	local scrpos = sunpos:ToScreen()
+
+	local dot = ( sun.direction:Dot( EyeVector() ) - 0.8 ) * 5
+	if ( dot <= 0 ) then return end
+
+	DrawSunbeams( pp_sunbeams_darken:GetFloat(), pp_sunbeams_multiply:GetFloat() * dot * sun.obstruction, pp_sunbeams_sunsize:GetFloat(), scrpos.x / ScrW(), scrpos.y / ScrH() )
+
+end )
+
+list.Set( "PostProcess", "#sunbeams_pp", {
+
+	icon = "gui/postprocess/sunrays.png",
+	convar = "pp_sunbeams",
+	category = "#shaders_pp",
+
+	cpanel = function( CPanel )
+
+		CPanel:Help( "#sunbeams_pp.desc" )
+		CPanel:CheckBox( "#sunbeams_pp.enable", "pp_sunbeams" )
+
+		local options = {
+			pp_sunbeams = "0",
+			pp_sunbeams_darken = "0.95",
+			pp_sunbeams_multiply = "1",
+			pp_sunbeams_sunsize = "0.075"
+		}
+		CPanel:ToolPresets( "sunbeams", options )
+
+		CPanel:NumSlider( "#sunbeams_pp.multiply", "pp_sunbeams_multiply", 0, 1 )
+		CPanel:NumSlider( "#sunbeams_pp.darken", "pp_sunbeams_darken", 0, 1 )
+		CPanel:NumSlider( "#sunbeams_pp.size", "pp_sunbeams_sunsize", 0.01, 0.25 )
+
+	end
+
+} )