//////////////////////////////////////////////////////////////////////////////////
// Create Date: 05.03.2019 14:28:42
// Module Name: draw_background
// Description:
//////////////////////////////////////////////////////////////////////////////////
 `timescale 1ns / 1ps

module draw_background(
    input wire pclk,
    input wire [10:0] hcount_in,
    input wire hsync_in,
    input wire hblnk_in,
    input wire [10:0] vcount_in,
    input wire vsync_in,
    input wire vblnk_in,

    output reg [10:0] hcount_out,
    output reg hsync_out,
    output reg hblnk_out,
    output reg [10:0] vcount_out,
    output reg vsync_out,
    output reg vblnk_out,

    output reg [11:0] rgb_out
    );

    reg [11:0] rgb_out_nxt;

always @(posedge pclk)
    begin
        // Just pass these through.
        hsync_out <= hsync_in;
        vsync_out <= vsync_in;
        hblnk_out <= hblnk_in;
        vblnk_out <= vblnk_in;

        hcount_out <= hcount_in;
        vcount_out <= vcount_in;
   // During blanking, make it it black.
   if (vblnk_in || hblnk_in) rgb_out <= 12'h0_0_0;
   else
   begin
    // Active display, top edge, make a yellow line.
    if (vcount_in == 0) rgb_out <= 12'h0_0_0;
    //LITERKA M
      else if (hcount_in >= 100 && hcount_in <= 150 && vcount_in >=150 && vcount_in <= 450) rgb_out <= 12'hf_a_0;
      else if (hcount_in >= 150 && hcount_in <= 200 && vcount_in >=150 && vcount_in <= 200) rgb_out <= 12'hf_a_0;
      else if (hcount_in >= 200 && hcount_in <= 250 && vcount_in >=200 && vcount_in <= 250) rgb_out <= 12'hf_a_0;
      else if (hcount_in >= 250 && hcount_in <= 300 && vcount_in >=150 && vcount_in <= 200) rgb_out <= 12'hf_a_0;
      else if (hcount_in >= 300 && hcount_in <= 350 && vcount_in >=150 && vcount_in <= 450) rgb_out <= 12'hf_a_0;
      //Uzupelnienia(male kwadraty)
      else if (hcount_in >= 175 && hcount_in <= 200 && vcount_in >=200 && vcount_in <= 225) rgb_out <= 12'hf_a_0;
      else if (hcount_in >= 250 && hcount_in <= 275 && vcount_in >=200 && vcount_in <= 225) rgb_out <= 12'hf_a_0;
      //LITERKA R
      else if (hcount_in >= 450 && hcount_in <= 500 && vcount_in >=150 && vcount_in <= 450) rgb_out <= 12'h0_7_a;
      else if (hcount_in >= 500 && hcount_in <= 625 && vcount_in >=150 && vcount_in <= 200) rgb_out <= 12'h0_7_a;
      else if (hcount_in >= 625 && hcount_in <= 675 && vcount_in >=200 && vcount_in <= 250) rgb_out <= 12'h0_7_a;
      else if (hcount_in >= 500 && hcount_in <= 625 && vcount_in >=250 && vcount_in <= 300) rgb_out <= 12'h0_7_a;
      else if (hcount_in >= 625 && hcount_in <= 660 && vcount_in >=300 && vcount_in <= 375) rgb_out <= 12'h0_7_a;
      else if (hcount_in >= 640 && hcount_in <= 675 && vcount_in >=375 && vcount_in <= 450) rgb_out <= 12'h0_7_a;
      //Uzupelnienia(male kwadraty)
      else if (hcount_in >= 625 && hcount_in <= 650 && vcount_in >=175 && vcount_in <= 200) rgb_out <= 12'h0_7_a;
      else if (hcount_in >= 625 && hcount_in <= 650 && vcount_in >=250 && vcount_in <= 275) rgb_out <= 12'h0_7_a;
      else if (hcount_in >= 600 && hcount_in <= 625 && vcount_in >=300 && vcount_in <= 325) rgb_out <= 12'h0_7_a;

      else rgb_out <= 12'h8_8_8;
    end
  end
endmodule