rtl/gfx: add gfx_pipes

1 files changed, 25 insertions, 0 deletions

diff --git a/rtl/gfx/gfx_pipes.sv b/rtl/gfx/gfx_pipes.sv
new file mode 100644
index 0000000..55ebd19
--- /dev/null
+++ b/rtl/gfx/gfx_pipes.sv
@@ -0,0 +1,25 @@
+module gfx_pipes
+#(parameter WIDTH=0, DEPTH=0)
+(
+	input  logic              clk,
+
+	input  logic[WIDTH - 1:0] in,
+	input  logic              stall,
+
+	output logic[WIDTH - 1:0] out
+);
+
+	logic[WIDTH - 1:0] pipes[DEPTH];
+
+	assign out = pipes[DEPTH - 1];
+
+	integer i;
+	always_ff @(posedge clk)
+		if (!stall) begin
+			pipes[0] <= in;
+
+			for (i = 1; i < DEPTH; ++i)
+				pipes[i] <= pipes[i - 1];
+		end
+
+endmodule