diff options
Diffstat (limited to 'rtl/gfx/gfx_setup.sv')
| -rw-r--r-- | rtl/gfx/gfx_setup.sv | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/rtl/gfx/gfx_setup.sv b/rtl/gfx/gfx_setup.sv deleted file mode 100644 index 1213645..0000000 --- a/rtl/gfx/gfx_setup.sv +++ /dev/null @@ -1,190 +0,0 @@ -`include "gfx/gfx_defs.sv" - -module gfx_setup -( - input logic clk, - - input raster_xy vertex_a, - vertex_b, - vertex_c, - input logic stall, - - output raster_xy pos_ref, - output coarse_dim span_x, - span_y, - output raster_offsets_tri offsets, - output fixed_tri edge_refs, - coarse_x_offsets, - coarse_y_offsets, - coarse_test_offsets -); - - // FIXME FIXME FIXME: Top-left rule - - fixed_tri edge_base, edge_inc_x, edge_inc_y, out_edge_refs, x_offsets, y_offsets, test_offsets; - - raster_xy bounds_ref, hold_vertex_a, hold_vertex_b, hold_vertex_c, ps[3], qs[3], out_pos_ref; - coarse_dim bounds_span_x, bounds_span_y, out_span_x, out_span_y; - raster_offsets_tri out_offsets; - - struct packed - { - raster_xy pos_ref; - coarse_dim span_x, - span_y; - raster_offsets_tri offsets; - fixed_tri edge_refs, - coarse_x_offsets, - coarse_y_offsets, - coarse_test_offsets; - } out, skid_out; - - gfx_skid_buf #(.WIDTH($bits(out))) skid - ( - .in(out), - .out(skid_out), - .* - ); - - assign out.span_x = out_span_x; - assign out.span_y = out_span_y; - assign out.pos_ref = out_pos_ref; - assign out.offsets = out_offsets; - assign out.edge_refs = out_edge_refs; - assign out.coarse_x_offsets = x_offsets; - assign out.coarse_y_offsets = y_offsets; - assign out.coarse_test_offsets = test_offsets; - - assign span_x = skid_out.span_x; - assign span_y = skid_out.span_y; - assign pos_ref = skid_out.pos_ref; - assign offsets = skid_out.offsets; - assign edge_refs = skid_out.edge_refs; - assign coarse_x_offsets = skid_out.coarse_x_offsets; - assign coarse_y_offsets = skid_out.coarse_y_offsets; - assign coarse_test_offsets = skid_out.coarse_test_offsets; - - assign ps[0] = hold_vertex_a; - assign qs[0] = hold_vertex_b; - - assign ps[1] = hold_vertex_b; - assign qs[1] = hold_vertex_c; - - assign ps[2] = hold_vertex_c; - assign qs[2] = hold_vertex_a; - - gfx_pipes #(.WIDTH($bits(vertex_a)), .DEPTH(`GFX_SETUP_BOUNDS_STAGES)) vertex_a_pipes - ( - .in(vertex_a), - .out(hold_vertex_a), - .* - ); - - gfx_pipes #(.WIDTH($bits(vertex_b)), .DEPTH(`GFX_SETUP_BOUNDS_STAGES)) vertex_b_pipes - ( - .in(vertex_b), - .out(hold_vertex_b), - .* - ); - - gfx_pipes #(.WIDTH($bits(vertex_c)), .DEPTH(`GFX_SETUP_BOUNDS_STAGES)) vertex_c_pipes - ( - .in(vertex_c), - .out(hold_vertex_c), - .* - ); - - gfx_setup_bounds bounds - ( - .span_x(bounds_span_x), - .span_y(bounds_span_y), - .reference(bounds_ref), - .* - ); - - localparam POST_BOUNDS_DEPTH = `GFX_SETUP_EDGE_STAGES + `GFX_SETUP_OFFSETS_STAGES; - - gfx_pipes #(.WIDTH($bits(pos_ref)), .DEPTH(POST_BOUNDS_DEPTH)) ref_pipes - ( - .in(bounds_ref), - .out(out_pos_ref), - .* - ); - - gfx_pipes #(.WIDTH($bits(span_x)), .DEPTH(POST_BOUNDS_DEPTH)) span_x_pipes - ( - .in(bounds_span_x), - .out(out_span_x), - .* - ); - - gfx_pipes #(.WIDTH($bits(span_y)), .DEPTH(POST_BOUNDS_DEPTH)) span_y_pipes - ( - .in(bounds_span_y), - .out(out_span_y), - .* - ); - - always_comb - for (integer i = 0; i < 3; ++i) - // Imaginárselo - unique case ({x_offsets[i][$bits(fixed) - 1], y_offsets[i][$bits(fixed) - 1]}) - 2'b00: - test_offsets[i] = out_offsets[i][`GFX_RASTER_OFFSETS - 1]; - - 2'b01: - test_offsets[i] = out_offsets[i][`GFX_RASTER_SIZE - 1]; - - 2'b10: - test_offsets[i] = out_offsets[i][`GFX_RASTER_OFFSETS - `GFX_RASTER_SIZE - 1]; - - 2'b11: - test_offsets[i] = out_offsets[i][0]; - endcase - - genvar i; - generate - for (i = 0; i < 3; ++i) begin: edges - gfx_setup_edge edge_fn - ( - .p(ps[i]), - .q(qs[i]), - .base(edge_base[i]), - .inc_x(edge_inc_x[i]), - .inc_y(edge_inc_y[i]), - .origin(bounds_ref), - .* - ); - - gfx_pipes #(.WIDTH($bits(fixed)), .DEPTH(`GFX_SETUP_OFFSETS_STAGES)) base_pipes - ( - .in(edge_base[i]), - .out(out_edge_refs[i]), - .* - ); - - gfx_pipes #(.WIDTH($bits(fixed)), .DEPTH(`GFX_SETUP_OFFSETS_STAGES)) coarse_x_pipes - ( - .in(edge_inc_x[i] << `GFX_RASTER_BITS), - .out(x_offsets[i]), - .* - ); - - gfx_pipes #(.WIDTH($bits(fixed)), .DEPTH(`GFX_SETUP_OFFSETS_STAGES)) coarse_y_pipes - ( - .in(edge_inc_y[i] << `GFX_RASTER_BITS), - .out(y_offsets[i]), - .* - ); - - gfx_setup_offsets edge_offsets - ( - .inc_x(edge_inc_x[i]), - .inc_y(edge_inc_y[i]), - .offsets(out_offsets[i]), - .* - ); - end - endgenerate - -endmodule |