BEGIN_CODE

        // touch react
        #ifdef TOUCH_BEND_ON
        sampler2D	_TouchReact_Buffer;
        float4		_TouchReact_Pos;		
        #endif
        
        
	void SurfaceFunction(inout Surface o, ShaderData d)
	{
	    #ifdef TOUCH_BEND_ON
            float3 pos = d.worldSpacePosition;   	
            	         	        	
            float2 tbPos = saturate((float2(pos.x,-pos.z) - _TouchReact_Pos.xz)/_TouchReact_Pos.w);
            float2 touchBend  = tex2Dlod(_TouchReact_Buffer, float4(tbPos,0,0));                        	                     
            touchBend.y *= 1.0 - length(tbPos - 0.5) * 2; // clip texture "clamp" bugs
                                   
            if(touchBend.y > 0.01)
            {                      
                if ((touchBend.x * 10000) < pos.y)
                {
                    clip (-1);
                }
            }
        #endif 
	}
END_CODE