Custom PPSSPP shaders

[LunaMoo]

Without multi-pass some effects cannot be mixed while other just require a bit of extra effort, here:

Code:

const float customX = 4.0; //edit only values in here
const float customY = 3.0; // here
const float zoom = 3.0; // and here, through you can set automatic zoom based on X or Y few lines lower
const float amount = 0.60; // suitable range = 0.00 - 1.00
const float power = 0.5; // suitable range = 0.0 - 1.0

void main() {

    float zoomByX = 16.0 / customX;
    float zoomByY = 9.0 / customY;
    float zoomByXY = zoom;
    
    //zoomByXY = zoomByX;
    // uncomment the above or below(remove // before the code) to have it zoom based on X or Y edge instead of the zoom you manually typed in above
    //zoomByXY = zoomByY;

    float xdivision = 1.0 / (customX / 16.0 * zoomByXY);
    float ydivision = 1.0 / (customY / 9.0 * zoomByXY);

    float2 vCoord0 = GetCoordinates().xy;
    float3 color = Sample().xyz;

    color = SampleLocation(float2(vCoord0.x * xdivision - (0.5 + xdivision / 2.0 - 1.0), vCoord0.y * ydivision - (0.5 + ydivision / 2.0 - 1.0)).xy).xyz;

    float4 sum = vec4(0);
    float3 bloom;
    float2 adjustedCoords = float2(vCoord0.x * xdivision - (0.5 + xdivision / 2.0 - 1.0), vCoord0.y * ydivision - (0.5 + ydivision / 2.0 - 1.0)).xy;

    for(int i= -3 ;i < 3; i++)
    {
        sum += SampleLocation(adjustedCoords + vec2(-1, i) * 0.004) * amount;
        sum += SampleLocation(adjustedCoords + vec2( 0, i) * 0.004) * amount;
        sum += SampleLocation(adjustedCoords + vec2( 1, i) * 0.004) * amount;
    }

    if (color.r < 0.3 && color.g < 0.3 && color.b < 0.3) {
        bloom = sum.xyz * sum.xyz * 0.012 + color;
    } else {
        if (color.r < 0.5 && color.g < 0.5 && color.b < 0.5) {
            bloom = sum.xyz * sum.xyz * 0.009 + color;
        } else {
            bloom = sum.xyz * sum.xyz * 0.0075 + color;
        }
    }

    // Remove color bleed outside of the game scene caused by shrinking
    float rangex = (0.5 + (xdivision / 2.0 - 1.0)) / xdivision;
    float rangey = (0.5 + (ydivision / 2.0 - 1.0)) / ydivision;
    if (vCoord0.x < rangex || vCoord0.x > 1.0 - rangex || vCoord0.y < rangey || vCoord0.y > 1.0 - rangey) {
        bloom.xyz = float3(0.0,0.0,0.0).xyz;
    }

    SetOutput(float4(bloom.rgb, 1.0));
}