DoNothingShaderTestState.hx

package states;

import flixel.util.FlxColor;
import flixel.FlxG;
import flixel.FlxSprite;

class DoNothingShaderTestState extends flixel.FlxState
{
    override function create()
    {
        super.create();
        
        final rdm = FlxG.random;
        
        // create random squares so we know the shader is working
        for (i in 0...50)
        {
            final sprite = new FlxSprite();
            sprite.x = rdm.int(0, FlxG.width);
            sprite.y = rdm.int(0, FlxG.height);
            sprite.makeGraphic(rdm.int(30, 100), rdm.int(30, 100), FlxColor.fromHSB(rdm.float(0, 360), 1, 1));
            add(sprite);
        }
        
        FlxG.camera.setFilters([new openfl.filters.ShaderFilter(new DoNothingShader())]);
    }
    
    override function update(elapsed)
    {
        super.update(elapsed);
    }
}

/**
 * Just shows what is already there
 */
class DoNothingShader extends flixel.system.FlxAssets.FlxShader
{
    @:glFragmentSource('
        #pragma header
        
        void main()
        {
            gl_FragColor = texture2D(bitmap, openfl_TextureCoordv);
        }
    ')
    
    public function new () { super(); }
}