Subversion Repositories orsoc_graphics_accelerator

`include "../../../rtl/verilog/gfx/gfx_fragment_processor.v"

`include "../../../rtl/verilog/gfx/gfx_color.v"

module fragment_bench();

reg clk_i;

reg rst_i;

reg [7:0] global_alpha_i;

// from raster

reg [15:0] x_counter_i;

reg [15:0] y_counter_i;

reg [15:0] u_i;

reg [15:0] v_i;

reg [31:0] pixel_color_i;

reg write_i;

reg ack_i;

//to blender

wire [15:0] pixel_x_o;

wire [15:0] pixel_y_o;

wire [31:0] pixel_color_o;

wire [7:0] pixel_alpha_o;

wire write_o;

wire ack_o;

// to/from wishbone master read

reg texture_ack_i;

reg [31:0] texture_data_i;

wire [31:2] texture_addr_o;

wire [3:0] texture_sel_o;

wire texture_request_o;

// from wishbone slave

reg texture_enable_i;

reg [31:2] tex0_base_i;

reg [15:0] tex0_size_x_i;

reg [15:0] tex0_size_y_i;

reg [1:0] color_depth_i;

reg colorkey_enable_i;

reg [31:0] colorkey_i;

initial begin

  $dumpfile("fragment.vcd");

  $dumpvars(0,fragment_bench);

// init values

  clk_i = 0;

  rst_i = 1;

  write_i = 0;

  texture_enable_i = 0;

  color_depth_i = 2'b01;

  ack_i = 0;

  global_alpha_i = 8'hff;

  pixel_color_i = 32'h12345678;

  tex0_base_i = 32'h12341234;

  tex0_size_x_i = 12;

  tex0_size_y_i = 10;

  u_i = 0;

  v_i = 0;

  x_counter_i = 0;

  y_counter_i = 0;

  texture_data_i = 32'hf800ffff;

  colorkey_enable_i = 0;

  colorkey_i = 32'h00000000;

//  texture_ack_i = 0;

//timing

  #4 rst_i = 0;

  #2 write_i = 1;

  #2 write_i = 0;

  #6 texture_enable_i = 1;

//  #4 texture_ack_i = 1;

//  #2 texture_ack_i = 0;

  #40 write_i = 1;

  #2 write_i = 0;

//  #8 ack_i = 0;

//  #16 ack_i = 1;

// end sim

  #100 $finish;

end

always @(posedge clk_i)

begin

    ack_i <= #1 write_o;

    texture_ack_i <= #1 texture_request_o;

end

always begin

  #1 clk_i = ~clk_i;

end

gfx_fragment_processor fragment(

.clk_i            (clk_i),

.rst_i            (rst_i),

.global_alpha_i   (global_alpha_i),

.x_counter_i      (x_counter_i),

.y_counter_i      (y_counter_i),

.u_i              (u_i),

.v_i              (v_i),

.pixel_color_i    (pixel_color_i),

.write_i          (write_i),

.ack_i            (ack_i),

.pixel_x_o        (pixel_x_o),

.pixel_y_o        (pixel_y_o),

.pixel_color_o    (pixel_color_o),

.pixel_alpha_o    (pixel_alpha_o),

.write_o          (write_o),

.ack_o            (ack_o),

.texture_ack_i    (texture_ack_i),

.texture_data_i   (texture_data_i),

.texture_addr_o   (texture_addr_o),

.texture_sel_o    (texture_sel_o),

.texture_request_o(texture_request_o),

.texture_enable_i (texture_enable_i),

.tex0_base_i      (tex0_base_i),

.tex0_size_x_i    (tex0_size_x_i),

.tex0_size_y_i    (tex0_size_y_i),

.color_depth_i    (color_depth_i),

.colorkey_enable_i(colorkey_enable_i),

.colorkey_i       (colorkey_i)

);

endmodule