rtl/gfx: implement shuffle, swizzle

1 files changed, 19 insertions, 0 deletions

diff --git a/rtl/gfx/gfx_swizzle.sv b/rtl/gfx/gfx_swizzle.sv
new file mode 100644
index 0000000..1a57c11
--- /dev/null
+++ b/rtl/gfx/gfx_swizzle.sv
@@ -0,0 +1,19 @@
+`include "gfx/gfx_defs.sv"
+
+module gfx_swizzle
+(
+	input  logic         clk,
+
+	input  vec4          in,
+	input  swizzle_lanes select,
+	input  logic         stall,
+
+	output vec4          out
+);
+
+	always_ff @(posedge clk)
+		if (!stall)
+			for (integer i = 0; i < `FLOATS_PER_VEC; ++i)
+				out[i] <= in[select[i]];
+
+endmodule