inital commit

Funky_fisheye.xml

@@ -0,0 +1,68 @@
+<effect>
+<name>Funky Fisheye</name>
+<description>A customizable Fisheye Lens overlay.</description>
+<author>Nomok</author>
+<BackgroundTexture>1</BackgroundTexture>
+  <sampler>
+    <index>1</index>
+    <filter>linear</filter>
+  </sampler>
+<parameter>
+		<name>Aperture</name>
+		<code>aperture</code>
+		<description>Focal Length</description>
+		<type>float</type>
+		<property>edit</property>
+		<value>210.0</value>
+</parameter>
+<parameter>
+		<name>Curve Scale</name>
+		<code>scale</code>
+		<description>Intensity of the Fisheye Lens</description>
+		<type>float</type>
+		<property>edit</property>
+		<value>2.0</value>
+</parameter>
+<parameter>
+		<name>Effect Scale</name>
+		<code>fScale</code>
+		<description>Intensity of the Effect</description>
+		<type>float</type>
+		<property>edit</property>
+		<value>1.0</value>
+</parameter>
+<parameter>
+		<name>Grid Scale</name>
+		<code>xScale</code>
+		<description>Scale of the Fisheye Image</description>
+		<type>float</type>
+		<property>edit</property>
+		<value>1.0</value>
+</parameter>
+<parameter>
+		<name>Overlay Mode</name>
+		<code>overlay</code>
+		<description>Toggles if the Fisheye Lens is used as an Overlay</description>
+		<type>int</type>
+		<property>checkbox</property>
+		<value>0</value>
+</parameter>
+<parameter>
+		<name>Edge Mode</name>
+		<code>edgemode</code>
+		<description>0 - No Edges, 1 - Edges with Stretched Colors, 2 - Transparent Edges</description>
+		<type>int</type>
+		<property>edit</property>
+		<value>0</value>
+</parameter>
+<parameter>
+		<name>Edge Scale</name>
+		<code>edgeScale</code>
+		<description>Scale of the Edge</description>
+		<description></description>
+		<type>float</type>
+		<property>edit</property>
+		<value>1.0</value>
+</parameter>
+</effect>
+

funky_fisheye.fx

@@ -0,0 +1,59 @@
+#define PI 3.141569
+
+sampler2D Tex0 : register(s0);
+sampler2D Tex1 : register(s1);
+
+float aperture;
+float scale;
+float fScale;
+float xScale;
+bool overlay;
+int edgemode;
+float edgeScale;
+
+float2 fisheye(float2 xy, float d)
+{
+    float z = scale*sqrt(1.0-d*d*fScale);
+    float r = atan2(d,z)/PI;
+    r*=xScale;
+    float phi = atan2(xy.y,xy.x);
+
+    return r*float2(cos(phi),sin(phi))+0.5;
+}
+
+
+float4 ps_main(in float2 texCoord : TEXCOORD0) : COLOR0
+{
+    float4 Out;
+
+    float2 output = texCoord;
+    float maxFactor = sin(0.5*aperture*(PI/180.0));
+
+    float2 xy = 2.0*texCoord-1.0;
+    float d = length(xy*maxFactor);
+
+    //for whatever reason hlsl doesn't have switch statements
+    if(edgemode==0)
+    {
+        output = fisheye(xy,d);
+    }
+    if(edgemode==2)
+    {
+        if(d < edgeScale * maxFactor)
+            output = fisheye(xy,d);
+    }
+    if(edgemode==1)
+    {
+        if(d < edgeScale * maxFactor)
+        {
+            output = fisheye(xy,d);
+        }else{
+            output = float2(0.0,0.0);
+        }
+    }
+
+    Out = overlay ? tex2D(Tex1,output) : tex2D(Tex0,output);
+    return Out;
+}
+
+technique tech_main { pass P0 { PixelShader  = compile ps_2_a ps_main(); }}

funky_fisheye.hlsl

@@ -0,0 +1,114 @@
+#define PI 3.141569
+
+Texture2D<float4> Tex0: register(t0); sampler _Tex0 : register(s0);
+Texture2D<float4> Tex1: register(t1); sampler _Tex1 : register(s1);
+
+cbuffer PS_VARIABLES : register(b0)
+{
+    float aperture;
+    float scale;
+    float fScale;
+    float xScale;
+    bool overlay;
+    int edgemode;
+    float edgeScale;
+}
+
+struct PS_INPUT
+{
+    float4 Tint : COLOR0;
+    float2 texCoord : TEXCOORD0;
+    float4 Position : SV_POSITION;  
+};
+
+struct PS_OUTPUT
+{   
+    float4 Color : SV_TARGET;   
+};
+
+float4 GetColorPM(float4 Image)
+{
+	if ( Image.a != 0 )
+		Image.rgb /= Image.a;
+	return Image;
+}
+
+float2 fisheye(float2 xy, float d)
+{
+    float z = scale*sqrt(1.0-d*d*fScale);
+    float r = atan2(d,z)/PI;
+    r*=xScale;
+    float phi = atan2(xy.y,xy.x);
+
+    return r*float2(cos(phi),sin(phi))+0.5;
+}
+
+float4 ps_main(in PS_INPUT In) : SV_TARGET
+{
+    float2 _texCoord = In.texCoord.xy;
+
+    float2 output = _texCoord;
+    float maxFactor = sin(0.5*aperture*(PI/180.0));
+
+    float2 xy = 2.0*_texCoord-1.0;
+    float d = length(xy*maxFactor);
+
+    if(edgemode==0)
+    {
+        output = fisheye(xy,d);
+    }
+    if(edgemode==2)
+    {
+        if(d < (maxFactor/fScale)*edgeScale)
+            output = fisheye(xy,d);
+    }
+    if(edgemode==1)
+    {
+        if(d < edgeScale * maxFactor)
+        {
+            output = fisheye(xy,d);
+        }else{
+            output = float2(0.0,0.0);
+        }
+    }
+
+    float4 Out = overlay ? Tex1.Sample(_Tex1,output)*In.Tint : Tex0.Sample(_Tex0,output)*In.Tint;
+
+    return Out;
+}
+
+float4 ps_main_pm(in PS_INPUT In) : SV_TARGET
+{
+    float2 _texCoord = In.texCoord.xy;
+
+    float2 output = _texCoord;
+    float maxFactor = sin(0.5*aperture*(PI/180.0));
+
+    float2 xy = 2.0*_texCoord-1.0;
+    float d = length(xy*maxFactor);
+
+    if(edgemode==0)
+    {
+        output = fisheye(xy,d);
+    }
+    if(edgemode==2)
+    {
+        if(d < edgeScale * maxFactor)
+            output = fisheye(xy,d);
+    }
+    if(edgemode==1)
+    {
+        if(d < edgeScale * maxFactor)
+        {
+            output = fisheye(xy,d);
+        }else{
+            output = float2(0.0,0.0);
+        }
+    }
+
+    float4 Out = overlay ? Tex1.Sample(_Tex1,output) : Tex0.Sample(_Tex0,output);
+
+    Out.rgb *= Out.a;
+    Out *= In.Tint;
+    return Out;
+}