Subversion Repositories orsoc_graphics_accelerator

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

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

module triangle_bench();

parameter point_width = 16;

parameter subpixel_width = 16;

reg clk_i;

reg rst_i;

reg ack_i;

wire ack_o;

reg triangle_write_i;

reg texture_enable_i;

reg signed [point_width-1:-subpixel_width] dest_pixel0_x_i;

reg signed [point_width-1:-subpixel_width] dest_pixel0_y_i;

reg signed [point_width-1:-subpixel_width] dest_pixel1_x_i;

reg signed [point_width-1:-subpixel_width] dest_pixel1_y_i;

reg signed [point_width-1:-subpixel_width] dest_pixel2_x_i;

reg signed [point_width-1:-subpixel_width] dest_pixel2_y_i;

wire [point_width-1:0] x_counter_o;

wire [point_width-1:0] y_counter_o;

wire write_o;

initial begin

  $dumpfile("triangle.vcd");

  $dumpvars(0,triangle_bench);

// init values

  clk_i = 0;

  rst_i = 1;

  ack_i = 0;

  triangle_write_i = 0;

  dest_pixel0_x_i = -5 << subpixel_width;

  dest_pixel0_y_i = 5 << subpixel_width;

  dest_pixel1_x_i = 210 << subpixel_width;

  dest_pixel1_y_i = 10 << subpixel_width;

  dest_pixel2_x_i = 5 << subpixel_width;

  dest_pixel2_y_i = 210 << subpixel_width;

  texture_enable_i = 0;

//timing

  #4 rst_i = 0;

  #10 triangle_write_i = 1;

  #2 triangle_write_i = 0;

  #200

  dest_pixel0_x_i = 5 << subpixel_width;

  dest_pixel0_y_i = 15 << subpixel_width;

  dest_pixel1_x_i = 10 << subpixel_width;

  dest_pixel1_y_i = 10 << subpixel_width;

  dest_pixel2_x_i = 5 << subpixel_width;

  dest_pixel2_y_i = 10 << subpixel_width;

  #10 triangle_write_i = 1;

  #2 triangle_write_i = 0;

// end sim

  #1000 $finish;

end

always begin

  #1 clk_i = ~clk_i;

end

always @(posedge clk_i)

begin

    ack_i <= #1 write_o;

end

gfx_triangle triangle(

.clk_i            (clk_i),

.rst_i            (rst_i),

.ack_i            (ack_i),

.ack_o            (ack_o),

.triangle_write_i (triangle_write_i),

.texture_enable_i (texture_enable_i),

.dest_pixel0_x_i  (dest_pixel0_x_i),

.dest_pixel0_y_i  (dest_pixel0_y_i),

.dest_pixel1_x_i  (dest_pixel1_x_i),

.dest_pixel1_y_i  (dest_pixel1_y_i),

.dest_pixel2_x_i  (dest_pixel2_x_i),

.dest_pixel2_y_i  (dest_pixel2_y_i),

.x_counter_o      (x_counter_o),

.y_counter_o      (y_counter_o),

.write_o          (write_o)

);

defparam triangle.point_width = point_width;

defparam triangle.subpixel_width = subpixel_width;

endmodule