Point Sampling Tex Unit Update

hw/rtl/tex_unit/VX_tex_pt_addr.v

@@ -2,11 +2,39 @@
 `include "VX_define.vh"
 
 module VX_tex_pt_addr #(
-
+    parameter FRAC_BITS = 20,
+    parameter INT_BITS = 32 - FRAC_BITS
 ) (
+    input wire  clk,
+    input wire  reset,
 
-  );
+    input wire  valid_in,
+    output wire ready_out,
+
+    input wire [`CSR_WIDTH-1:0] tex_addr,
+    input wire [`CSR_WIDTH-1:0] tex_width,
+    input wire [`CSR_WIDTH-1:0] tex_height,
+
+    input wire [31:0]     tex_u,
+    input wire [31:0]     tex_v,
+
+    output wire [31:0]    pt_addr,
+
+    output wire           valid_out,
+    input wire            ready_in
+);
+
+  `UNUSED_VAR (clk)
+  `UNUSED_VAR (reset)
+
+  reg [31:0]  x_offset;
+  reg [31:0]  y_offset;
+
+  assign  x_offset = tex_u >> (32'(FRAC_BITS) - tex_width); 
+  assign  y_offset = tex_v >> (32'(FRAC_BITS) - tex_height); 
+  assign  pt_addr = (tex_addr << (32 - `CSR_WIDTH)) + x_offset + (y_offset << tex_width);  
+
+  assign valid_out = valid_in;
+  assign ready_out = ready_in;
 
-  // Need to fill in
-    
 endmodule