1 files changed, 70 insertions, 0 deletions
diff --git a/rtl/gfx/gfx_sp_shuffler.sv b/rtl/gfx/gfx_sp_shuffler.sv
new file mode 100644
index 0000000..e4c119d
--- /dev/null
+++ b/rtl/gfx/gfx_sp_shuffler.sv
@@ -0,0 +1,70 @@
+`include "gfx/gfx_defs.sv"
+
+module gfx_sp_shuffler
+(
+	input  logic     clk,
+	                 rst_n,
+
+	input  insn_deco deco,
+	input  mat4      a,
+	                 b,
+	input  logic     in_valid,
+	output logic     in_ready,
+
+	output wb_op     wb,
+	input  logic     wb_ready,
+	output logic     wb_valid
+);
+
+	mat4 select_out, swizzle_out;
+	wb_op wb_out;
+	logic stall, is_swizzle;
+	vreg_num hold_dst;
+
+	gfx_pipeline_flow #(.STAGES(2)) flow
+	(
+		.out_ready(wb_ready),
+		.out_valid(wb_valid),
+		.*
+	);
+
+	gfx_skid_buf #(.WIDTH($bits(wb))) skid
+	(
+		.in(wb_out),
+		.out(wb),
+		.*
+	);
+
+	genvar gen_i;
+	generate
+		for (gen_i = 0; gen_i < `VECS_PER_MAT; ++gen_i) begin: lanes
+			gfx_sp_select select
+			(
+				.a(a[gen_i]),
+				.b(b[gen_i]),
+				.out(select_out[gen_i]),
+				.deco(deco.shuffler),
+				.*
+			);
+
+			gfx_sp_swizzle swizzle
+			(
+				.in(a[gen_i]),
+				.out(swizzle_out[gen_i]),
+				.deco(deco.shuffler),
+				.*
+			);
+		end
+	endgenerate
+
+	always_ff @(posedge clk)
+		if (!stall) begin
+			hold_dst <= deco.dst;
+			is_swizzle <= deco.shuffler.is_swizzle;
+
+			wb_out.dst <= hold_dst;
+			for (integer i = 0; i < `VECS_PER_MAT; ++i)
+				wb_out.data[i] <= is_swizzle ? swizzle_out[i] : select_out[i];
+		end
+
+endmodule