motionblur.shader

void main() 
{
    // Use the first set of texture coordinates in the fragment shader 
    gl_TexCoord[0] = gl_MultiTexCoord0;

    // Transform the position to screen space
    gl_Position = ftransform(); 
}

~~~~~

uniform sampler2D Texture0;
uniform sampler2D Texture1;
uniform sampler2D Texture2;

uniform float motionbias;
uniform float motionclamp;

#define KERNEL_SIZE  3.0
#define KERNEL_AREA 16.0

void main() 
{
    // Get the motion value
    vec4 vMotion = texture2D( Texture2, gl_TexCoord[0].xy ) * 2.0 - 1.0;

    // Get the blur amount
    vec2 blur = clamp( vMotion.xy * vMotion.xy * motionbias, -motionclamp, motionclamp );

    //blur parts which are out of focus
    vec4 col = vec4( 0, 0, 0, 0 );
    for ( float x = -KERNEL_SIZE + 1.0; x < KERNEL_SIZE; x += 1.0 )
    {
        for ( float y = -KERNEL_SIZE + 1.0; y < KERNEL_SIZE; y += 1.0 )
        {
            col += texture2D( Texture0, gl_TexCoord[0].xy + vec2( blur.x * x, blur.y * y ) );
        }
    }
    col /= KERNEL_AREA;
    
    gl_FragColor = col;
}

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