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This commit is contained in:
purplerain 2023-06-15 18:53:54 +00:00
parent 482636fd24
commit bb198177ef
Signed by: purplerain
GPG key ID: F42C07F07E2E35B7
32 changed files with 663 additions and 338 deletions
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16
sys/dev/pci/drm/drm_fb_helper.c
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@ -724,19 +724,27 @@ static void drm_fb_helper_damage(struct fb_info *info, u32 x, u32 y,
static void drm_fb_helper_memory_range_to_clip(struct fb_info *info, off_t off, size_t len,
struct drm_rect *clip)
{
u32 line_length = info->fix.line_length;
u32 fb_height = info->var.yres;
off_t end = off + len;
u32 x1 = 0;
u32 y1 = off / info->fix.line_length;
u32 y1 = off / line_length;
u32 x2 = info->var.xres;
u32 y2 = DIV_ROUND_UP(end, info->fix.line_length);
u32 y2 = DIV_ROUND_UP(end, line_length);
/* Don't allow any of them beyond the bottom bound of display area */
if (y1 > fb_height)
y1 = fb_height;
if (y2 > fb_height)
y2 = fb_height;
if ((y2 - y1) == 1) {
/*
* We've only written to a single scanline. Try to reduce
* the number of horizontal pixels that need an update.
*/
off_t bit_off = (off % info->fix.line_length) * 8;
off_t bit_end = (end % info->fix.line_length) * 8;
off_t bit_off = (off % line_length) * 8;
off_t bit_end = (end % line_length) * 8;
x1 = bit_off / info->var.bits_per_pixel;
x2 = DIV_ROUND_UP(bit_end, info->var.bits_per_pixel);