diff options
| author | Scott Shawcroft <scott@tannewt.org> | 2019-05-16 16:45:38 -0700 |
|---|---|---|
| committer | Scott Shawcroft <scott@tannewt.org> | 2019-05-21 17:41:06 -0700 |
| commit | 3fad7de8db7f1f317ab6d00a00a82e406ec6fb33 (patch) | |
| tree | d3c50c49fdbb62c69feec210531b5b02e3e6304d /supervisor/shared/display.c | |
| parent | a888fe4c8e12144141b9c0730d3d25ebea33cbc7 (diff) | |
Rework the pixel computation to use areas
This changes the displayio pixel computation from per-pixel to
per-area. This is precursor work to updating portions of the screen
(#1169). It should provide mild speedups because bounds checks are
done once per area rather than once per pixel. Filling by area also
allows TileGrid to maintain a row-associative fill pattern even when
the display's refresh is orthogonal to it.
Diffstat (limited to 'supervisor/shared/display.c')
| -rw-r--r-- | supervisor/shared/display.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/supervisor/shared/display.c b/supervisor/shared/display.c index 0b3fbe178..cfb9cc1d1 100644 --- a/supervisor/shared/display.c +++ b/supervisor/shared/display.c @@ -70,8 +70,8 @@ void supervisor_start_terminal(uint16_t width_px, uint16_t height_px) { grid->width_in_tiles = width_in_tiles; grid->height_in_tiles = height_in_tiles; - grid->total_width = width_in_tiles * grid->tile_width; - grid->total_height = height_in_tiles * grid->tile_height; + grid->area.x2 = grid->area.x1 + width_in_tiles * grid->tile_width - 1; + grid->area.y2 = grid->area.y1 + height_in_tiles * grid->tile_height - 1; grid->tiles = tiles; supervisor_terminal.cursor_x = 0; @@ -157,13 +157,15 @@ displayio_tilegrid_t blinka_sprite = { .base = {.type = &displayio_tilegrid_type }, .bitmap = &blinka_bitmap, .pixel_shader = &blinka_palette, - .x = 0, - .y = 0, + .area = { + .x1 = 0, + .y1 = 0, + .x2 = 16, + .y2 = 16 + }, .bitmap_width_in_tiles = 1, .width_in_tiles = 1, .height_in_tiles = 1, - .total_width = 16, - .total_height = 16, .tile_width = 16, .tile_height = 16, .top_left_x = 16, |