rtl/gfx: implement perspective correction

1 files changed, 49 insertions, 0 deletions

diff --git a/rtl/gfx/gfx_persp.sv b/rtl/gfx/gfx_persp.sv
new file mode 100644
index 0000000..0a75d39
--- /dev/null
+++ b/rtl/gfx/gfx_persp.sv
@@ -0,0 +1,49 @@
+`include "gfx/gfx_defs.sv"
+
+module gfx_persp
+(
+	input  logic       clk,
+	                   rst_n,
+
+	input  raster_xyzw in_vertex_a,
+	                   in_vertex_b,
+	                   in_vertex_c,
+	input  logic       in_valid,
+	output logic       in_ready,
+
+	input  logic       out_ready,
+	output logic       out_valid,
+	output raster_xyzw out_vertex_a,
+	                   out_vertex_b,
+	                   out_vertex_c
+);
+
+	logic stall;
+
+	gfx_pipeline_flow #(.STAGES(`FIXED_DIV_STAGES)) flow
+	(
+		.*
+	);
+
+	gfx_persp_vertex persp_a
+	(
+		.in_vertex(in_vertex_a),
+		.out_vertex(out_vertex_a),
+		.*
+	);
+
+	gfx_persp_vertex persp_b
+	(
+		.in_vertex(in_vertex_b),
+		.out_vertex(out_vertex_b),
+		.*
+	);
+
+	gfx_persp_vertex persp_c
+	(
+		.in_vertex(in_vertex_c),
+		.out_vertex(out_vertex_c),
+		.*
+	);
+
+endmodule