Cross Processing and Better Bloom

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//                                  Shader Modified From Martinsh's Blender GLSL 2D Filter Demo:                               //
//http://blenderartists.org/forum/showthread.php?156482-HDR-many-simple-GLSL-2D-Filters-v2.0&s=bbeb20ac111931da170fd6f8fea28d25//
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uniform sampler2D sampler0;

const float BRIGHT_PASS_THRESHOLD = 0.5;
const float BRIGHT_PASS_OFFSET = 0.5;
float contrast = 1.05;

//Bloom
#define blurclamp 0.002
#define bias 0.01

#define KERNEL_SIZE  3.0

vec2 texcoord = vec2(gl_TexCoord[0]).st;
vec4 texcolor = texture2D(sampler0, gl_TexCoord[0].st);

vec4 bright(vec2 coo)
{
    vec4 color = texture2D(sampler0, coo);

    color = max(color - BRIGHT_PASS_THRESHOLD, 0.0);

    return color / (color + BRIGHT_PASS_OFFSET);
}
//

//Cross Processing
vec4 gradient(vec4 coo)
{
    vec4 stripes = coo;
    stripes.r =  stripes.r*1.3+0.01;
    stripes.g = stripes.g*1.2;
    stripes.b = stripes.b*0.7+0.15;
    stripes.a = texcolor.a;
    return stripes;
}
//

void main(void)
{
    vec2 blur = vec2(clamp( bias, -blurclamp, blurclamp ));

    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 += bright( texcoord + vec2( blur.x * x, blur.y * y ) );
    }
    }
    col /= ((KERNEL_SIZE+KERNEL_SIZE)-1.0)*((KERNEL_SIZE+KERNEL_SIZE)-1.0);

        vec4 value = texture2D(sampler0, texcoord);

        vec4 fin = col + gradient(value);

    gl_FragColor = (fin - 0.5) * contrast + 0.5;
}