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Overlay fully working

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The instability in the last commit was actually caused by a bad source
signal. I created the test pattern using gimp, which ended up displaying
the marker pattern in its pattern brush preview window. This led to the
board triggering on that instead of the actual test picture. Fixed this
by tabbign out of the pattern preview.
This commit is contained in:
jaseg 2021-06-26 12:57:01 +02:00
parent 42983323f9
commit f5f25e7d06
1 changed files with 7 additions and 3 deletions
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10
src/term_renderer.v
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@ -71,7 +71,7 @@ reg [11:0] glyph_y;
reg [FONT_GLYPH_W-1:0] glyph_sreg_out;
reg [5:0] px_x;
reg [5:0] px_y;
reg in_hsync_last, in_vsync_last;
reg in_hsync_last, in_vsync_last, in_blank_last;
wire [7:0] gm_data_glyph = glyphmem_data[7:0];
wire [11:0] gm_data_style = glyphmem_data[19:8];
@ -98,6 +98,7 @@ always @(posedge clk) begin
px_y <= 0;
in_hsync_last <= 0;
in_vsync_last <= 0;
in_blank_last <= 0;
glyph_sreg_out <= 0;
glyphmem_style_reg <= 0;
newline_found <= 0;
@ -105,8 +106,9 @@ always @(posedge clk) begin
end else begin
in_hsync_last <= in_hsync;
in_vsync_last <= in_vsync;
in_blank_last <= in_blank;
if (in_hsync_last && !in_hsync) begin
if (!in_blank_last && in_blank) begin
glyph_x <= 0;
px_x <= 0;
newline_found <= 0;
@ -118,7 +120,9 @@ always @(posedge clk) begin
px_y <= 0;
end
end else if (!in_blank) begin
end
if (!in_blank) begin
if (px_x != FONT_GLYPH_W-1) begin
px_x <= px_x + 1;