SOLVED Voronoi Diagrams gets drawn in wrong colors.

[31Nf4ChZ4H73N]

I followed this youtube tutorial to create Voronoi Diagrams using surfaces in game maker 2. so far it works but my colors are not really random but they are all a dark redish. I could not figure out where this happens, though.

oMapGeneration

/// Create Event
randomize();

// Create surface
global.width = room_width;
global.height = room_height;
global.biome_surface = surface_create(global.width,global.height);

// Seeds to create
seeds = 8;

// Create seed
repeat (seeds) {
    var xx = irandom(global.width);
    var yy = irandom(global.height);
    with instance_create_layer(xx,yy,layer,oSeed) {
        var red = irandom(255);
        var green = irandom(255);
        var blue = irandom(255);
        biome_color = make_color_rgb(red,green,blue);
    }
}
// Create object that draws
instance_create_layer(0,0,layer,oBiomeCreate);

/// draw event
draw_surface_ext(global.biome_surface,0,0,1,1,0,c_white,1);

oSeed

//Create Event
biome_color = c_white;
biome_name = "";
depth = -1000;

oBiomeCreate

///Create Event
for (var xx = 0; xx < global.width; xx++) {
    for (var yy = 0; yy < global.height; yy++) {
        x = xx;
        y = yy;
        // Get nearest seed
        var seed = instance_nearest(x,y,oSeed);
        surface_set_target(global.biome_surface);
        // Add sprite to surface
        draw_sprite_ext(sprite_index,0,x,y,1,1,image_angle,seed.biome_color,1);
        surface_reset_target();
    }
}
instance_destroy();

As I understood the in the oMapGeneration the seeds are getting their positions and they are getting their colors which are randomized.
Then in oBiomeCreate it just loops trough every pixel and is looking for the closest seed to that pixel then it draws sets the surface on that pixel to the color of the closes seed
I really do not understand why picks those colors everytime:

 

[Nidoking]

What does the sprite you're drawing actually look like? Is it perfectly white? Perfectly black? Some flavor of dark red, perhaps?

 

[NightFrost]

Not relevant to question, but wouldn't this procedure be a lot faster in a shader? Fragment shader's whole MO is pixel manipulation in parallel operations.

 

[31Nf4ChZ4H73N]

What does the sprite you're drawing actually look like? Is it perfectly white? Perfectly black? Some flavor of dark red, perhaps?

the sprite is completely 1x1 pixel

Not relevant to question, but wouldn't this procedure be a lot faster in a shader? Fragment shader's whole MO is pixel manipulation in parallel operations.

any idea how to.do it?

 

[TsukaYuriko]

the sprite is completely 1x1 pixel

"1x1 pixel" is not a color.

A what-colored 1x1 pixel is it? This matters due to the way sprites are blended. In order to cleanly blend with any color you set, the sprite should be white.

 

[31Nf4ChZ4H73N]

"1x1 pixel" is not a color.

A what-colored 1x1 pixel is it? This matters due to the way sprites are blended. In order to cleanly blend with any color you set, the sprite should be white.

I will check again but yes, I think that the sprite is white. sorry, I meant to say it is a white sprite with a width and height of 1

 

[chamaeleon]

There isn't something like interpolate colors enabled, causing it to look different due to the small size?

 

[31Nf4ChZ4H73N]

ok it works now. I just swaped the sprites by mistake. thank you guys!

 

[NightFrost]

any idea how to.do it?

If you know how to write shaders, the answer would be, send the seed data to an array in the shader, and have fragment shader loop them and use distance() to get the closest one and set the pixel to its color. If you don't know, I would have to start from "what is a shader" and you'd be better served instead looking at TheReverend's shaders with GameMaker videos.