Shader galore

Sledgemapper/Content/Content.mgcb

@@ -3021,6 +3021,12 @@
 /processorParam:TextureFormat=Color
 /build:overlays/zigzag-hieroglyph.png
 
+#begin shaders/OutlineShader.fx
+/importer:EffectImporter
+/processor:EffectProcessor
+/processorParam:DebugMode=Auto
+/build:shaders/OutlineShader.fx
+
 #begin tiles/tile01.png
 /importer:TextureImporter
 /processor:TextureProcessor

Sledgemapper/Content/shaders/OutlineShader.fx

@@ -0,0 +1,92 @@
+#if OPENGL
+#define SV_POSITION POSITION
+#define VS_SHADERMODEL vs_3_0
+#define PS_SHADERMODEL ps_3_0
+#else
+#define VS_SHADERMODEL vs_4_0_level_9_1
+#define PS_SHADERMODEL ps_4_0_level_9_1
+#endif
+float2 TexelSize; // should be (1f/textureSize.X, 1f/textureSize.Y)
+int shadow;
+int BorderSize;
+float R;
+float G;
+float B;
+
+Texture2D SpriteTexture;
+sampler2D SpriteTextureSampler = sampler_state
+{
+  Texture = <SpriteTexture>;
+};
+struct VertexShaderOutput
+{
+  float4 Color : COLOR0;
+  float2 TextureCoordinates : TEXCOORD0;
+};
+
+sampler ColorMapSampler = sampler_state
+{
+	Texture = <ColorMap>;
+	MinFilter = Linear;
+	MagFilter = Linear;
+	MipFilter = Linear;
+	AddressU = Clamp;
+	AddressV = Clamp;
+};
+
+
+float4 MainPS(VertexShaderOutput input) : COLOR
+{
+float4 color = tex2D(ColorMapSampler, input.TextureCoordinates);
+float2 offsetX = float2(TexelSize.x, 0);
+float2 offsetY = { 0, TexelSize.y };
+
+float2 offsetd1 = { TexelSize.x, TexelSize.y };
+float2 offsetd2 = { -TexelSize.x, -TexelSize.y };
+float2 offsetd3 = { TexelSize.x, -TexelSize.y };
+float2 offsetd4 = { -TexelSize.x, TexelSize.y };
+
+if (color.a == 0)
+{
+    for (int i = 1; i < 16; i++)
+    {
+        if (i<=BorderSize)
+        {
+            float4 c1 = tex2D(ColorMapSampler, input.TextureCoordinates + offsetX*i);
+            float4 c2 = tex2D(ColorMapSampler, input.TextureCoordinates - offsetX*i);
+            float4 c3 = tex2D(ColorMapSampler, input.TextureCoordinates + offsetY*i);
+            float4 c4 = tex2D(ColorMapSampler, input.TextureCoordinates - offsetY*i);
+
+            float4 d1 = tex2D(ColorMapSampler, input.TextureCoordinates - offsetd1*i);
+            float4 d2 = tex2D(ColorMapSampler, input.TextureCoordinates - offsetd2*i);
+            float4 d3 = tex2D(ColorMapSampler, input.TextureCoordinates - offsetd3*i);
+            float4 d4 = tex2D(ColorMapSampler, input.TextureCoordinates - offsetd4*i);
+            
+            if (color.a != c1.a || color.a != c2.a|| color.a != c3.a|| color.a != c4.a
+            || color.a != d1.a 
+            || color.a != d2.a
+            || color.a != d3.a
+            || color.a != d4.a
+            )
+            {
+                color.r=R;
+                color.g=G;
+                color.b=B;
+                color.a=1;
+            }
+        }
+    }
+    return color;
+}
+ 
+
+    return color;
+}
+
+technique SpriteDrawing
+{
+  pass P0
+  {
+      PixelShader = compile PS_SHADERMODEL MainPS();
+  }
+};