Subversion Repositories orsoc_graphics_accelerator

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

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

module clip_bench();

parameter point_width = 16;

reg                   clk_i;

reg                   rst_i;

reg                   clipping_enable_i;

reg                   zbuffer_enable_i;

reg            [31:2] zbuffer_base_i;

reg [point_width-1:0] target_size_x_i;

reg [point_width-1:0] target_size_y_i;

//clip pixels

reg [point_width-1:0] clip_pixel0_x_i;

reg [point_width-1:0] clip_pixel0_y_i;

reg [point_width-1:0] clip_pixel1_x_i;

reg [point_width-1:0] clip_pixel1_y_i;

// from raster

reg [point_width-1:0] raster_pixel_x_i;

reg [point_width-1:0] raster_pixel_y_i;

reg [point_width-1:0] raster_u_i;

reg [point_width-1:0] raster_v_i;

reg            [31:0] flat_color_i;

reg                   raster_write_i;

wire                  ack_o;

// from cuvz

reg [point_width-1:0] cuvz_pixel_x_i;

reg [point_width-1:0] cuvz_pixel_y_i;

reg signed [point_width-1:0] cuvz_pixel_z_i;

reg [point_width-1:0] cuvz_u_i;

reg [point_width-1:0] cuvz_v_i;

reg             [7:0] cuvz_a_i;

reg            [31:0] cuvz_color_i;

reg                   cuvz_write_i;

// Interface against wishbone master (reader)

reg                   z_ack_i;

wire           [31:2] z_addr_o;

reg            [31:0] z_data_i;

wire            [3:0] z_sel_o;

wire                  z_request_o;

reg                   wbm_busy_i;

//to render

wire [point_width-1:0] pixel_x_o;

wire [point_width-1:0] pixel_y_o;

wire [point_width-1:0] pixel_z_o;

wire [point_width-1:0] u_o;

wire [point_width-1:0] v_o;

reg  [point_width-1:0] bezier_factor0_i;

reg  [point_width-1:0] bezier_factor1_i;

wire [point_width-1:0] bezier_factor0_o;

wire [point_width-1:0] bezier_factor1_o;

wire            [31:0] color_o;

wire                   write_o;

reg                    ack_i;

initial begin

  $dumpfile("clip.vcd");

  $dumpvars(0,clip_bench);

// init values

  clk_i = 0;

  rst_i = 1;

  cuvz_write_i = 0;

  raster_write_i = 0;

  clipping_enable_i = 0;

  clip_pixel0_x_i = 0;

  clip_pixel0_y_i = 0;

  clip_pixel1_x_i = 10;

  clip_pixel1_y_i = 10;

  raster_pixel_x_i = 0;

  raster_pixel_y_i = 0;

  cuvz_pixel_x_i = 0;

  cuvz_pixel_y_i = 0;

  cuvz_pixel_z_i = -12;

  cuvz_a_i = 0;

  bezier_factor0_i = 0;

  bezier_factor1_i = 0;

  wbm_busy_i = 0;

  zbuffer_enable_i = 1;

  zbuffer_base_i = 32'h33000000;

  target_size_x_i = 100;

  target_size_y_i = 100;

  z_data_i = 32'h80008000;

  ack_i = 0;

  flat_color_i = 0;

  cuvz_color_i = 1;

//timing

  #4 rst_i = 0;

  #4 cuvz_write_i = 1;

  #2 cuvz_write_i = 0;

  #10 cuvz_write_i = 1;

  cuvz_pixel_x_i = 20;

  cuvz_pixel_y_i = 20;

  cuvz_pixel_z_i = 12;

  #2 cuvz_write_i = 0;

  #10 raster_write_i = 1;

  clipping_enable_i = 1;

  raster_pixel_x_i = 20;

  raster_pixel_y_i = 20;

  #2 raster_write_i = 0;

// end sim

  #100 $finish;

end

always @(posedge clk_i)

begin

  ack_i <= #1 write_o;

  z_ack_i <= #1 z_request_o;

end

always begin

  #1 clk_i = ~clk_i;

end

gfx_clip clip(

.clk_i            (clk_i),

.rst_i            (rst_i),

.clipping_enable_i(clipping_enable_i),

.zbuffer_enable_i (zbuffer_enable_i),

.zbuffer_base_i   (zbuffer_base_i),

.target_size_x_i  (target_size_x_i),

.target_size_y_i  (target_size_y_i),

.clip_pixel0_x_i  (clip_pixel0_x_i),

.clip_pixel0_y_i  (clip_pixel0_y_i),

.clip_pixel1_x_i  (clip_pixel1_x_i),

.clip_pixel1_y_i  (clip_pixel1_y_i),

.raster_pixel_x_i (raster_pixel_x_i),

.raster_pixel_y_i (raster_pixel_y_i),

.raster_u_i       (raster_u_i),

.raster_v_i       (raster_v_i),

.flat_color_i     (flat_color_i),

.raster_write_i   (raster_write_i),

.cuvz_pixel_x_i   (cuvz_pixel_x_i),

.cuvz_pixel_y_i   (cuvz_pixel_y_i),

.cuvz_pixel_z_i   (cuvz_pixel_z_i),

.cuvz_u_i         (cuvz_u_i),

.cuvz_v_i         (cuvz_v_i),

.cuvz_a_i         (cuvz_a_i),

.cuvz_color_i     (cuvz_color_i),

.cuvz_write_i     (cuvz_write_i),

.ack_o            (ack_o),

.z_ack_i          (z_ack_i),

.z_addr_o         (z_addr_o),

.z_data_i         (z_data_i),

.z_sel_o          (z_sel_o),

.z_request_o      (z_request_o),

.wbm_busy_i       (wbm_busy_i),

.pixel_x_o        (pixel_x_o),

.pixel_y_o        (pixel_y_o),

.pixel_z_o        (pixel_z_o),

.u_o              (u_o),

.v_o              (v_o),

.bezier_factor0_i (bezier_factor0_i),

.bezier_factor1_i (bezier_factor1_i),

.bezier_factor0_o (bezier_factor0_o),

.bezier_factor1_o (bezier_factor1_o),

.color_o          (color_o),

.write_o          (write_o),

.ack_i            (ack_i)

);

endmodule