diff options
Diffstat (limited to 'shared-module/displayio/TileGrid.c')
| -rw-r--r-- | shared-module/displayio/TileGrid.c | 52 |
1 files changed, 29 insertions, 23 deletions
diff --git a/shared-module/displayio/TileGrid.c b/shared-module/displayio/TileGrid.c index 45b05110f..c4855c333 100644 --- a/shared-module/displayio/TileGrid.c +++ b/shared-module/displayio/TileGrid.c @@ -396,12 +396,16 @@ bool displayio_tilegrid_fill_area(displayio_tilegrid_t *self, const _displayio_c } uint8_t pixels_per_byte = 8 / colorspace->depth; - for (int16_t y = start_y; y < end_y; y++) { - int16_t row_start = start + (y - start_y + y_shift) * y_stride; // in pixels - int16_t local_y = y / self->absolute_transform->scale; - for (int16_t x = start_x; x < end_x; x++) { + + displayio_input_pixel_t input_pixel; + displayio_output_pixel_t output_pixel; + + for (input_pixel.y = start_y; input_pixel.y < end_y; ++input_pixel.y) { + int16_t row_start = start + (input_pixel.y - start_y + y_shift) * y_stride; // in pixels + int16_t local_y = input_pixel.y / self->absolute_transform->scale; + for (input_pixel.x = start_x; input_pixel.x < end_x; ++input_pixel.x) { // Compute the destination pixel in the buffer and mask based on the transformations. - int16_t offset = row_start + (x - start_x + x_shift) * x_stride; // in pixels + int16_t offset = row_start + (input_pixel.x - start_x + x_shift) * x_stride; // in pixels // This is super useful for debugging out of range accesses. Uncomment to use. // if (offset < 0 || offset >= (int32_t) displayio_area_size(area)) { @@ -412,41 +416,43 @@ bool displayio_tilegrid_fill_area(displayio_tilegrid_t *self, const _displayio_c if ((mask[offset / 32] & (1 << (offset % 32))) != 0) { continue; } - int16_t local_x = x / self->absolute_transform->scale; + int16_t local_x = input_pixel.x / self->absolute_transform->scale; uint16_t tile_location = ((local_y / self->tile_height + self->top_left_y) % self->height_in_tiles) * self->width_in_tiles + (local_x / self->tile_width + self->top_left_x) % self->width_in_tiles; - uint8_t tile = tiles[tile_location]; - uint16_t tile_x = (tile % self->bitmap_width_in_tiles) * self->tile_width + local_x % self->tile_width; - uint16_t tile_y = (tile / self->bitmap_width_in_tiles) * self->tile_height + local_y % self->tile_height; + input_pixel.tile = tiles[tile_location]; + input_pixel.tile_x = (input_pixel.tile % self->bitmap_width_in_tiles) * self->tile_width + local_x % self->tile_width; + input_pixel.tile_y = (input_pixel.tile / self->bitmap_width_in_tiles) * self->tile_height + local_y % self->tile_height; + + //uint32_t value = 0; + output_pixel.pixel = 0; + input_pixel.pixel = 0; - uint32_t value = 0; // We always want to read bitmap pixels by row first and then transpose into the destination // buffer because most bitmaps are row associated. if (MP_OBJ_IS_TYPE(self->bitmap, &displayio_bitmap_type)) { - value = common_hal_displayio_bitmap_get_pixel(self->bitmap, tile_x, tile_y); + input_pixel.pixel = common_hal_displayio_bitmap_get_pixel(self->bitmap, input_pixel.tile_x, input_pixel.tile_y); } else if (MP_OBJ_IS_TYPE(self->bitmap, &displayio_shape_type)) { - value = common_hal_displayio_shape_get_pixel(self->bitmap, tile_x, tile_y); + input_pixel.pixel = common_hal_displayio_shape_get_pixel(self->bitmap, input_pixel.tile_x, input_pixel.tile_y); } else if (MP_OBJ_IS_TYPE(self->bitmap, &displayio_ondiskbitmap_type)) { - value = common_hal_displayio_ondiskbitmap_get_pixel(self->bitmap, tile_x, tile_y); + input_pixel.pixel = common_hal_displayio_ondiskbitmap_get_pixel(self->bitmap, input_pixel.tile_x, input_pixel.tile_y); } - - uint32_t pixel; - bool opaque = true; + + output_pixel.opaque = true; if (self->pixel_shader == mp_const_none) { - pixel = value; + output_pixel.pixel = input_pixel.pixel; } else if (MP_OBJ_IS_TYPE(self->pixel_shader, &displayio_palette_type)) { - opaque = displayio_palette_get_color(self->pixel_shader, colorspace, value, &pixel); + output_pixel.opaque = displayio_palette_get_color(self->pixel_shader, colorspace, input_pixel.pixel, &output_pixel.pixel); } else if (MP_OBJ_IS_TYPE(self->pixel_shader, &displayio_colorconverter_type)) { - opaque = displayio_colorconverter_convert(self->pixel_shader, colorspace, value, &pixel); + displayio_colorconverter_convert(self->pixel_shader, colorspace, &input_pixel, &output_pixel); } - if (!opaque) { + if (!output_pixel.opaque) { // A pixel is transparent so we haven't fully covered the area ourselves. full_coverage = false; } else { mask[offset / 32] |= 1 << (offset % 32); if (colorspace->depth == 16) { - *(((uint16_t*) buffer) + offset) = pixel; + *(((uint16_t*) buffer) + offset) = output_pixel.pixel; } else if (colorspace->depth == 8) { - *(((uint8_t*) buffer) + offset) = pixel; + *(((uint8_t*) buffer) + offset) = output_pixel.pixel; } else if (colorspace->depth < 8) { // Reorder the offsets to pack multiple rows into a byte (meaning they share a column). if (!colorspace->pixels_in_byte_share_row) { @@ -465,7 +471,7 @@ bool displayio_tilegrid_fill_area(displayio_tilegrid_t *self, const _displayio_c // Reverse the shift by subtracting it from the leftmost shift. shift = (pixels_per_byte - 1) * colorspace->depth - shift; } - ((uint8_t*)buffer)[offset / pixels_per_byte] |= pixel << shift; + ((uint8_t*)buffer)[offset / pixels_per_byte] |= output_pixel.pixel << shift; } } } |