Revert "Update BlurBox.lua"

This reverts commit de210bf.

plugin/BlurBox.lua

@@ -1,6 +1,62 @@
 BlurBoxGlobalScreenSource = false
 blurboxShaders = 0
 blurboxFactor = 1/2
+local blurBoxShader
+
+function _dgsCreateBlurBox()
+	if not getElementData(localPlayer,"DGS-DEBUG-C") then
+		outputDebugString("Deprecated usage of function @dgsCreateBlurBox, please check wiki, and run it again with command /debugdgs c",2)
+	else
+		assert(false,"Deprecated usage of function @dgsCreateBlurBox")
+	end
+	if not isElement(BlurBoxGlobalScreenSource) then
+		BlurBoxGlobalScreenSource = dxCreateScreenSource(sW*blurboxFactor,sH*blurboxFactor)
+	end
+	local shader = dxCreateShader(blurBoxShader)
+	dgsSetData(shader,"asPlugin","dgs-dxblurbox")
+	dxSetShaderValue(shader,"screenSource",BlurBoxGlobalScreenSource)
+	blurboxShaders = blurboxShaders+1
+	triggerEvent("onDgsPluginCreate",shader,sourceResource)
+	return shader
+end
+
+function dgsBlurBoxRender(blurBox,x,y,w,h,postGUI,updateScreenSource)
+	if updateScreenSource then
+		dxUpdateScreenSource(BlurBoxGlobalScreenSource,true)
+	end
+	dxDrawImageSection(x,y,w,h,x*blurboxFactor,y*blurboxFactor,w*blurboxFactor,h*blurboxFactor,blurBox,0,0,0,0xFFFFFFFF,postGUI or false)
+end
+
+----------------Shader
+blurBoxShader = [[
+texture screenSource;
+float brightness = 1;
+
+sampler2D Sampler0 = sampler_state{
+    Texture         = screenSource;
+    MinFilter       = Linear;
+    MagFilter       = Linear;
+    MipFilter       = Linear;
+    AddressU        = Mirror;
+    AddressV        = Mirror;
+};
+
+float4 PixelShaderFunction(float2 tex : TEXCOORD0, float4 diffuse : COLOR0 ) : COLOR0{
+    float4 Color = 0;
+    float4 Texel = tex2D(Sampler0,tex);
+    for(int i = -3; i <= 3; i++)
+		for(int j = -3; j <= 3; j++)
+			Color += tex2D(Sampler0,tex+float2(i*ddx(tex.x),j*ddy(tex.y))) *(1.0/49.0)*brightness;
+    Color.a *= diffuse.a;
+	return Color;
+}
+
+technique fxBlur{
+    pass P0{
+        PixelShader = compile ps_2_a PixelShaderFunction();
+    }
+}
+]]
 
 function dgsBlurBoxDraw(x,y,w,h,self,rotation,rotationCenterOffsetX,rotationCenterOffsetY,color,postGUI)
 	local rt = dgsElementData[self].rt
@@ -45,8 +101,9 @@ function dgsBlurBoxDraw(x,y,w,h,self,rotation,rotationCenterOffsetX,rotationCent
 end
 
 function dgsCreateBlurBox(w,h,blursource)
-	if not(type(w) == "number") then error(dgsGenAsrt(w,"dgsCreateBlurBox",1,"number")) end
-	if not(type(h) == "number") then error(dgsGenAsrt(h,"dgsCreateBlurBox",2,"number")) end
+	if not w and not h then
+		return _dgsCreateBlurBox()
+	end
 	local bb = dgsCreateCustomRenderer(dgsBlurBoxDraw)
 	if isElement(blursource) then
 		dgsSetData(bb,"blurSource",blursource)