5x5 gaussian

varying vec4 Color;
varying vec2 TexCoord0;

#ifdef VSHADER

void main()
{
    gl_Position = ProjectionMatrix * ViewMatrix * GLVertex;
    TexCoord0 = GLTexCoord0.xy;
    Color = GLColor;
}



#elif defined PSHADER

#define TEX2DLOD textureLod

uniform sampler2D Tex0;

void main()
{
    vec4 color = vec4( 0, 0, 0, 0 );
    vec2 hrange = ( abs( dFdx( TexCoord0 ) ) + abs( dFdy( TexCoord0 ) ) ) * 0.75;

    // LINE 1
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( -hrange.x, -hrange.y ), 0 ) * ( 0.1 * 0.1 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( -hrange.x * 0.5, -hrange.y ), 0 ) * ( 0.2 * 0.1 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( 0, -hrange.y ), 0 ) * ( 0.4 * 0.1 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( hrange.x * 0.5, -hrange.y ), 0 ) * ( 0.2 * 0.1 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( hrange.x, -hrange.y ), 0 ) * ( 0.1 * 0.1 );

    // LINE 2
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( -hrange.x, -hrange.y * 0.5 ), 0 ) * ( 0.1 * 0.2 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( -hrange.x * 0.5, -hrange.y * 0.5 ), 0 ) * ( 0.2 * 0.2 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( 0, -hrange.y * 0.5 ), 0 ) * ( 0.4 * 0.2 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( hrange.x * 0.5, -hrange.y * 0.5 ), 0 ) * ( 0.2 * 0.2 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( hrange.x, -hrange.y * 0.5 ), 0 ) * ( 0.1 * 0.2 );

    // LINE 3
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( -hrange.x, 0 ), 0 ) * ( 0.1 * 0.4 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( -hrange.x * 0.5, 0 ), 0 ) * ( 0.2 * 0.4 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( 0, 0 ), 0 ) * ( 0.4 * 0.4 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( hrange.x * 0.5, 0 ), 0 ) * ( 0.2 * 0.4 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( hrange.x, 0 ), 0 ) * ( 0.1 * 0.4 );

    // LINE 4
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( -hrange.x, hrange.y * 0.5 ), 0 ) * ( 0.1 * 0.2 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( -hrange.x * 0.5, hrange.y * 0.5 ), 0 ) * ( 0.2 * 0.2 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( 0, hrange.y * 0.5 ), 0 ) * ( 0.4 * 0.2 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( hrange.x * 0.5, hrange.y * 0.5 ), 0 ) * ( 0.2 * 0.2 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( hrange.x, hrange.y * 0.5 ), 0 ) * ( 0.1 * 0.2 );

    // LINE 5
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( -hrange.x, hrange.y ), 0 ) * ( 0.1 * 0.1 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( -hrange.x * 0.5, hrange.y ), 0 ) * ( 0.2 * 0.1 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( 0, hrange.y ), 0 ) * ( 0.4 * 0.1 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( hrange.x * 0.5, hrange.y ), 0 ) * ( 0.2 * 0.1 );
    color += TEX2DLOD( Tex0, TexCoord0 + vec2( hrange.x, hrange.y ), 0 ) * ( 0.1 * 0.1 );

    gl_FragColor = color * Color;
}



#endif