Subversion Repositories orsoc_graphics_accelerator

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

module transform_bench();

reg clk_i;

reg rst_i;

parameter point_width = 16;

parameter subpixel_width = 16;

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

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

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

reg                           [1:0] point_id_i; // point 0,1,2,3

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

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

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

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

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

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

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

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

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

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

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

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

wire signed [point_width-1:-subpixel_width] p0_x_o;

wire signed [point_width-1:-subpixel_width] p0_y_o;

wire signed               [point_width-1:0] p0_z_o;

wire signed [point_width-1:-subpixel_width] p1_x_o;

wire signed [point_width-1:-subpixel_width] p1_y_o;

wire signed               [point_width-1:0] p1_z_o;

wire signed [point_width-1:-subpixel_width] p2_x_o;

wire signed [point_width-1:-subpixel_width] p2_y_o;

wire signed               [point_width-1:0] p2_z_o;

wire signed [point_width-1:0] p0_x_int = p0_x_o[point_width-1:0];

wire signed [point_width-1:0] p0_y_int = p0_y_o[point_width-1:0];

wire signed [point_width-1:0] p1_x_int = p1_x_o[point_width-1:0];

wire signed [point_width-1:0] p1_y_int = p1_y_o[point_width-1:0];

wire signed [point_width-1:0] p2_x_int = p2_x_o[point_width-1:0];

wire signed [point_width-1:0] p2_y_int = p2_y_o[point_width-1:0];

reg transform_i, forward_i;

wire ack_o;

parameter FIXEDW = (1<<subpixel_width);

initial begin

  $dumpfile("transform.vcd");

  $dumpvars(0,transform_bench);

  clk_i = 0;

  rst_i = 1;

  transform_i   = 0;

  forward_i     = 0;

  x_i        = 0;

  y_i        = 0;

  z_i        = 0;

  point_id_i = 0;

  // Set transform to identity

  aa  = -1 * FIXEDW;

  ab  = 0;

  ac  = 0;

  tx  = 10 * FIXEDW;

  ba  = 0;

  bb  = 1 * FIXEDW;

  bc  = 0;

  ty  = 15 * FIXEDW;

  ca  = 0;

  cb  = 0;

  cc  = 1 * FIXEDW;

  tz  = -20 * FIXEDW;

// timing

#2 rst_i = 0;

  transform_i = 1;

  x_i = -20 * FIXEDW;

  y_i = 0;

  z_i = 0;

  point_id_i = 0;

#4 point_id_i = 1;

#4 point_id_i = 2;

#4 forward_i = 0;

#10  transform_i = 1;

  point_id_i = 0;

  aa = 2*FIXEDW;

  ab = 1*FIXEDW;

  ac = 0;

  #1000 $finish;

end

always begin

  #1 clk_i = ~clk_i;

end

gfx_transform transform(

.clk_i           (clk_i),

.rst_i           (rst_i),

.x_i             (x_i),

.y_i             (y_i),

.z_i             (z_i),

.point_id_i      (point_id_i),

// Matrix

.aa              (aa),

.ab              (ab),

.ac              (ac),

.tx              (tx),

.ba              (ba),

.bb              (bb),

.bc              (bc),

.ty              (ty),

.ca              (ca),

.cb              (cb),

.cc              (cc),

.tz              (tz),

// Output points

.p0_x_o          (p0_x_o),

.p0_y_o          (p0_y_o),

.p0_z_o          (p0_z_o),

.p1_x_o          (p1_x_o),

.p1_y_o          (p1_y_o),

.p1_z_o          (p1_z_o),

.p2_x_o          (p2_x_o),

.p2_y_o          (p2_y_o),

.p2_z_o          (p2_z_o),

.transform_i     (transform_i),

.forward_i       (forward_i),

.ack_o           (ack_o)

);

defparam transform.point_width = point_width;

defparam transform.subpixel_width = subpixel_width;

endmodule