File plymouth-screen-twice-scale-on-160DPI-higher.patch of Package plymouth.25426
diff -Nura plymouth-0.9.5+git20190908+3abfab2/src/libply/ply-utils.c plymouth-0.9.5~git20210406.e554475_new/src/libply/ply-utils.c
--- plymouth-0.9.5+git20190908+3abfab2/src/libply/ply-utils.c 2021-04-06 19:53:40.000000000 +0800
+++ plymouth-0.9.5+git20190908+3abfab2_new/src/libply/ply-utils.c 2022-07-28 22:03:49.043107571 +0800
@@ -852,7 +852,7 @@
}
/* The minimum resolution at which we turn on a device-scale of 2 */
-#define HIDPI_LIMIT 192
+#define HIDPI_TWICE_LIMIT 160
#define HIDPI_MIN_HEIGHT 1200
int
@@ -866,6 +866,19 @@
const char *force_device_scale;
device_scale = 1;
+ #define WIDTH_INCHS (width_mm / 25.4)
+ #define HEIGHT_INCHS (height_mm / 25.4)
+
+ if (width > 0 && height > 0 && width_mm > 0 && height_mm > 0) {
+ ply_trace("screen width is %d mm", width_mm);
+ ply_trace("screen height is %d mm", height_mm);
+ ply_trace("screen width pixels is %d.", width);
+ ply_trace("screen height pixels is %d.", height);
+ dpi_x = (double)width / WIDTH_INCHS;
+ ply_trace("screen width DPI is %lf", dpi_x);
+ dpi_y = (double)height / HEIGHT_INCHS;
+ ply_trace("screen height DPI is %lf", dpi_y);
+ }
if ((force_device_scale = getenv ("PLYMOUTH_FORCE_SCALE")))
return strtoul (force_device_scale, NULL, 0);
@@ -884,14 +897,10 @@
(width_mm == 16 && height_mm == 10))
return 1;
- if (width_mm > 0 && height_mm > 0) {
- dpi_x = (double)width / (width_mm / 25.4);
- dpi_y = (double)height / (height_mm / 25.4);
- /* We don't completely trust these values so both
- must be high, and never pick higher ratio than
- 2 automatically */
- if (dpi_x > HIDPI_LIMIT && dpi_y > HIDPI_LIMIT)
- device_scale = 2;
+ if (dpi_x > HIDPI_TWICE_LIMIT && dpi_y > HIDPI_TWICE_LIMIT)
+ {
+ device_scale = 2;
+ ply_trace("When DPI > 160, screen will scale output twice as community want.");
}
return device_scale;