init commit

line.fx

@@ -0,0 +1,57 @@
+#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
+
+matrix WorldViewProjection;
+float thickness;
+
+struct VertexShaderInput
+{
+	float4 Position : POSITION0;
+	float4 Color : COLOR0;
+	float2 Normal : TEXCOORD0;
+};
+
+struct VertexShaderOutput
+{
+	float4 Position : SV_POSITION;
+	float4 Color : COLOR0;
+	float2 Normal : TEXCOORD0;
+};
+
+VertexShaderOutput MainVS(in VertexShaderInput input)
+{
+	VertexShaderOutput output = (VertexShaderOutput)0;
+	float4 temp =  input.Position + (float4(input.Normal,0.0,0.0) * thickness);
+	output.Position = mul(temp, WorldViewProjection);
+	output.Color = input.Color;
+	output.Normal = input.Normal;
+	return output;
+}
+
+float4 MainPS(VertexShaderOutput input) : COLOR
+{
+	float feather = 0.2; //Fade off part
+	float4 res = input.Color;
+	float distFromLine = length(input.Normal);
+    float alpha =  1.0 - ((clamp(distFromLine, (1.0 - feather),1.0) - (1.0 - feather)) / feather);	
+	res.a = alpha;
+	return res;
+}
+
+technique BasicColorDrawing
+{
+	pass P0
+	{
+		AlphaBlendEnable = TRUE;
+		DestBlend = INVSRCALPHA;
+		SrcBlend = SRCALPHA;
+		VertexShader = compile VS_SHADERMODEL MainVS();
+		PixelShader = compile PS_SHADERMODEL MainPS();
+	}
+};