eadmaster

void main_vertex( float4 position : POSITION,
  		  out float4 oPosition : POSITION,
  		  float2 texCoord : TEXCOORD0,
  		  out float2 oTexCoord : TEXCOORD0,
  		  uniform float4x4 modelViewProj )
{
    oPosition = mul(modelViewProj, position);
    oTexCoord = texCoord;
}

eadmaster

/* derived from https://github.com/libretro/common-shaders/blob/master/Motionblur/Motionblur-blue.cg
   to increase the effect, uncomment more PREVX lines in each color channel
*/

struct previous
{
   uniform sampler2D texture;
   float2 tex_coord;
};