Subversion Repositories orsoc_graphics_accelerator

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

module cuvz_bench();

parameter point_width     = 16;

reg                     clk_i;

reg                     rst_i;

reg      ack_i;

wire     ack_o;

reg      write_i;

reg  [point_width-1:0] factor0_i;

reg  [point_width-1:0] factor1_i;

reg             [31:0] color0_i;

reg             [31:0] color1_i;

reg             [31:0] color2_i;

reg              [1:0] color_depth_i;

wire            [31:0] color_o;

reg  [point_width-1:0] z0_i;

reg  [point_width-1:0] z1_i;

reg  [point_width-1:0] z2_i;

wire [point_width-1:0] z_o;

reg              [7:0] a0_i;

reg              [7:0] a1_i;

reg              [7:0] a2_i;

wire             [7:0] a_o;

reg  [point_width-1:0] u0_i;

reg  [point_width-1:0] u1_i;

reg  [point_width-1:0] u2_i;

wire [point_width-1:0] u_o;

reg  [point_width-1:0] v0_i;

reg  [point_width-1:0] v1_i;

reg  [point_width-1:0] v2_i;

wire [point_width-1:0] v_o;

reg  [point_width-1:0] x_i;

reg  [point_width-1:0] y_i;

wire [point_width-1:0] x_o;

wire [point_width-1:0] y_o;

// Write pixel output signal

wire                   write_o;

initial begin

  $dumpfile("cuvz.vcd");

  $dumpvars(0,cuvz_bench);

// init values

  clk_i = 0;

  rst_i = 1;

  x_i = 1;

  y_i = 2;

  write_i = 0;

  factor0_i = 35000;

  factor1_i = 0;

  color0_i = 255;

  color1_i = 255 << 8;

  color2_i = 255 << 16;

  color_depth_i = 3; // 0 = 8 bits, 1 = 16 bits, 3 = 32 bits

  z0_i = 150;

  z1_i = 75;

  z2_i = 0;

  a0_i = 150;

  a1_i = 75;

  a2_i = 0;

  u0_i = 0;

  u1_i = 0;

  u2_i = 0;

  v0_i = 0;

  v1_i = 0;

  v2_i = 0;

//timing

#2 rst_i = 0;

  write_i = 1;

#2 write_i = 0;

#4 write_i = 1;

  factor1_i = 10000;

#2 write_i = 0;

// end sim

  #2000 $finish;

end

always begin

  #1 clk_i = ~clk_i;

end

always @(posedge clk_i)

  #1 ack_i <= write_o;

gfx_cuvz cuvz(

.clk_i     (clk_i),

.rst_i     (rst_i),

.ack_i     (ack_i),

.ack_o     (ack_o),

.write_i   (write_i),

// Variables needed for interpolation

.factor0_i (factor0_i),

.factor1_i (factor1_i),

// Color

.color0_i  (color0_i),

.color1_i  (color1_i),

.color2_i  (color2_i),

.color_depth_i (color_depth_i),

.color_o   (color_o),

// Depth

.z0_i      (z0_i),

.z1_i      (z1_i),

.z2_i      (z2_i),

.z_o       (z_o),

// Alpha

.a0_i      (a0_i),

.a1_i      (a1_i),

.a2_i      (a2_i),

.a_o       (a_o),

// Texture coordinates

.u0_i      (u0_i),

.v0_i      (v0_i),

.u1_i      (u1_i),

.v1_i      (v1_i),

.u2_i      (u2_i),

.v2_i      (v2_i),

.u_o       (u_o),

.v_o       (v_o),

// Raster position

.x_i       (x_i),

.y_i       (y_i),

.x_o       (x_o),

.y_o       (y_o),

.write_o   (write_o)

);

defparam cuvz.point_width     = point_width;

endmodule