struct VertexOut
{
	float4 VertexPosition		:POSITION;
	float2 TexCoord				:TEXCOORD;
	float4 Color				:COLOR0;
};


/*
  Vertex program for displaying particle system with rectangle rendertexture 
*/
VertexOut VertexProgram( float4 Position :POSITION,
						float4 Texcoord: TEXCOORD,
						float4 Color:COLOR0,
						float3 BillboardSize: NORMAL,
						uniform float4x4 ModelViewProj	:state.matrix.mvp
						)									
{
	VertexOut Out;	
	
	Out.Color=Color;
	
	Out.VertexPosition=mul(ModelViewProj, Position);
	Out.TexCoord=Texcoord.xy;	
	
	return Out;	
}

/*
  Fragment program for displaying particle system with rectangle rendertexture
*/
void FragmentProgram(	VertexOut	In,
						uniform sampler2D Texture
						,out float4 Color:COLOR
						)
{
	
	Color=float4(0,0,0,tex2D(Texture,In.TexCoord).r*0.17*In.Color.a);	
		
}