diff options
Diffstat (limited to 'rtl/gfx/gfx_masks.sv')
| -rw-r--r-- | rtl/gfx/gfx_masks.sv | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/rtl/gfx/gfx_masks.sv b/rtl/gfx/gfx_masks.sv index 86d1b78..5182bd4 100644 --- a/rtl/gfx/gfx_masks.sv +++ b/rtl/gfx/gfx_masks.sv @@ -3,8 +3,11 @@ module gfx_masks ( input logic clk, + rst_n, input logic swap_buffers, + input cmd_word fb_base_a, + fb_base_b, input linear_coord scan_mask_addr, output logic scan_mask, @@ -13,7 +16,10 @@ module gfx_masks frag_mask_set, input linear_coord frag_mask_read_addr, frag_mask_write_addr, - output logic frag_mask + output logic frag_mask, + + output vram_addr frag_base, + scan_base ); logic mask_a, mask_b, frag_write_hold, frag_set_hold; @@ -39,6 +45,15 @@ module gfx_masks .* ); + always_ff @(posedge clk or negedge rst_n) + if (!rst_n) begin + frag_base <= 0; + scan_base <= 0; + end else begin + frag_base <= swap_buffers ? fb_base_a[$bits(vram_addr):1] : fb_base_b[$bits(vram_addr):1]; + scan_base <= swap_buffers ? fb_base_b[$bits(vram_addr):1] : fb_base_a[$bits(vram_addr):1]; + end + always_ff @(posedge clk) begin scan_mask <= swap_buffers ? mask_b : mask_a; scan_addr_hold <= scan_mask_addr; |