fix color with EDID

README-zh.md

@@ -16,9 +16,7 @@ macOS 的 DPI 机制和 Windows 下不一样，比如 1080p 的屏幕在 Windows
 
 ![设置](./img/preferences.jpg)
 
-<video width="100%" controls autoplay loop>
-  <source src="./img/hidpi.mp4" type="video/mp4">
-</video>
+![设置](./img/hidpi.gif)
 
 ## 使用方法
 

README.md

@@ -14,9 +14,7 @@ System Preferences
 
 ![Preferences](./img/preferences.jpg)
 
-<video width="100%" controls autoplay loop>
-  <source src="./img/hidpi.mp4" type="video/mp4">
-</video>
+![Preferences](./img/hidpi.gif)
 
 ## Usage
 

hidpi-zh.sh

@@ -99,9 +99,6 @@ EEF
     #
     get_edid
     
-    edID=$(echo $EDID | sed 's/../b5/21')
-    EDid=$(printf $edID | xxd -r -p | base64)
-
     thisDir=$(dirname $0)
     thatDir="/System/Library/Displays/Contents/Resources/Overrides"
     Overrides="\/System\/Library\/Displays\/Contents\/Resources\/Overrides\/"
@@ -438,6 +435,14 @@ function enable_hidpi_with_patch()
 {
     choose_icon
     main
+
+    version=${EDID:38:2}
+    basicparams=${EDID:40:2}
+    checksum=${EDID:254:2}
+    newchecksum=$(printf '%x' $((0x$checksum + 0x$version +0x$basicparams - 0x04 - 0x90)) | tail -c 2)
+    newedid=${EDID:0:38}0490${EDID:42:212}${newchecksum}
+    EDid=$(printf $newedid | xxd -r -p | base64)
+
     /usr/bin/sed -i "" "s:EDid:${EDid}:g" $dpiFile
     end
 }

hidpi.sh

@@ -99,9 +99,6 @@ EEF
     #
     get_edid
 
-    edID=$(echo $EDID | sed 's/../b5/21')
-    EDid=$(echo $edID | xxd -r -p | base64)
-
     thisDir=$(dirname $0)
     thatDir="/System/Library/Displays/Contents/Resources/Overrides"
     Overrides="\/System\/Library\/Displays\/Contents\/Resources\/Overrides\/"
@@ -438,6 +435,14 @@ function enable_hidpi_with_patch()
 {
     choose_icon
     main
+
+    version=${EDID:38:2}
+    basicparams=${EDID:40:2}
+    checksum=${EDID:254:2}
+    newchecksum=$(printf '%x' $((0x$checksum + 0x$version +0x$basicparams - 0x04 - 0x90)) | tail -c 2)
+    newedid=${EDID:0:38}0490${EDID:42:212}${newchecksum}
+    EDid=$(printf $newedid | xxd -r -p | base64)
+
     /usr/bin/sed -i "" "s:EDid:${EDid}:g" $dpiFile
     end
 }