Initial commit

lua/postprocess/sobel.lua

@@ -0,0 +1,46 @@
+
+local SobelMaterial = Material( "pp/sobel" )
+SobelMaterial:SetTexture( "$fbtexture", render.GetScreenEffectTexture() )
+
+local pp_sobel = CreateClientConVar( "pp_sobel", "0", false, false )
+local pp_sobel_threshold = CreateClientConVar( "pp_sobel_threshold", "0.11", true, false )
+
+function DrawSobel( threshold )
+
+	render.CopyRenderTargetToTexture( render.GetScreenEffectTexture() )
+
+	-- update threshold value
+	SobelMaterial:SetFloat( "$threshold", threshold )
+
+	render.SetMaterial( SobelMaterial )
+	render.DrawScreenQuad()
+
+end
+
+hook.Add( "RenderScreenspaceEffects", "RenderSobel", function()
+
+	if ( !pp_sobel:GetBool() ) then return end
+	if ( !GAMEMODE:PostProcessPermitted( "sobel" ) ) then return end
+
+	DrawSobel( pp_sobel_threshold:GetFloat() )
+
+end )
+
+list.Set( "PostProcess", "#sobel_pp", {
+
+	icon = "gui/postprocess/sobel.png",
+	convar = "pp_sobel",
+	category = "#shaders_pp",
+
+	cpanel = function( CPanel )
+
+		CPanel:Help( "#sobel_pp.desc" )
+		CPanel:CheckBox( "#sobel_pp.enable", "pp_sobel" )
+
+		CPanel:ToolPresets( "sobel", { pp_sobel_threshold = "0.11" } )
+
+		CPanel:NumSlider( "#sobel_pp.threshold", "pp_sobel_threshold", 0, 1 )
+
+	end
+
+} )