1 files changed, 79 insertions, 0 deletions
diff --git a/rtl/legacy_gfx/gfx_frag.sv b/rtl/legacy_gfx/gfx_frag.sv
new file mode 100644
index 0000000..d61de72
--- /dev/null
+++ b/rtl/legacy_gfx/gfx_frag.sv
@@ -0,0 +1,79 @@
+`include "gfx/gfx_defs.sv"
+
+module gfx_frag
+(
+	input  logic      clk,
+	                  rst_n,
+
+	input  frag_xy    frag,
+	input  fixed_tri  bary,
+	                  ws,
+	input  logic      in_valid,
+	output logic      in_ready,
+
+	input  logic      out_ready,
+	output logic      out_valid,
+	output frag_paint out
+);
+
+	logic stall;
+	frag_paint frag_out;
+
+	gfx_pipeline_flow #(.STAGES(`GFX_FRAG_STAGES)) addr_flow
+	(
+		.*
+	);
+
+	linear_coord linear;
+
+	gfx_frag_addr addr
+	(
+		.*
+	);
+
+	localparam ADDR_WAIT_STAGES = `GFX_FRAG_STAGES - `GFX_FRAG_ADDR_STAGES;
+
+	gfx_pipes #(.WIDTH($bits(linear_coord)), .DEPTH(ADDR_WAIT_STAGES)) addr_pipes
+	(
+		.in(linear),
+		.out(frag_out.addr),
+		.*
+	);
+
+	fixed b1, b2;
+
+	gfx_frag_bary frag_bary
+	(
+		.*
+	);
+
+	color_lerp_lanes argb0, argb1_argb0, argb2_argb0;
+
+	assign argb0[3] = 32'd0 << 8;
+	assign argb0[2] = 32'd255 << 8;
+	assign argb0[1] = 32'd0 << 8;
+	assign argb0[0] = 32'd0 << 8;
+
+	assign argb1_argb0[3] = 32'd0 << 8;
+	assign argb1_argb0[2] = (-32'sd255) << 8;
+	assign argb1_argb0[1] = 32'd255 << 8;
+	assign argb1_argb0[0] = 32'd0 << 8;
+
+	assign argb2_argb0[3] = 32'd0 << 8;
+	assign argb2_argb0[2] = (-32'sd255) << 8;
+	assign argb2_argb0[1] = 32'd0 << 8;
+	assign argb2_argb0[0] = 32'd255 << 8;
+
+	gfx_frag_shade shade
+	(
+		.color(frag_out.color),
+		.*
+	);
+
+	gfx_skid_buf #(.WIDTH($bits(frag_out))) skid
+	(
+		.in(frag_out),
+		.*
+	);
+
+endmodule