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Fix y-inversion

tight-png
Andri Yngvason 2019-09-08 23:24:01 +00:00
parent 55051310d6
commit f3def21c96
1 changed files with 5 additions and 4 deletions
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9
src/zrle.c
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@ -369,14 +369,15 @@ int zrle_encode_box(struct vec* out, const struct rfb_pixel_format *dst_fmt,
int tile_x = (i % UDIV_UP(width, 64)) * 64;
int tile_y = (i / UDIV_UP(width, 64)) * 64;
if (fb->nvnc_modifier & NVNC_MOD_Y_INVERT)
tile_y = (UDIV_UP(height, 64) - tile_y / 64 - 1) * 64;
int tile_width = width - tile_x >= 64 ? 64 : width - tile_x;
int tile_height = height - tile_y >= 64 ? 64 : height - tile_y;
int y_off = !(fb->nvnc_modifier & NVNC_MOD_Y_INVERT)
? y + tile_y
: fb->height - y - tile_y - tile_height;
zrle_copy_tile(tile,
((uint32_t*)fb->addr) + x + tile_x + (y + tile_y) * stride,
((uint32_t*)fb->addr) + x + tile_x + y_off * stride,
stride, tile_width, tile_height,
fb->nvnc_modifier);