一、环境

高通865 Android 10

二、源码修改位置

1、修改dpi 

device/qcom/kona/kona.mk

@@ -116,7 +116,7 @@ TARGET_USES_RRO := true# system prop for Bluetooth SOC typePRODUCT_PROPERTY_OVERRIDES += \vendor.qcom.bluetooth.soc=hastings \
-	ro.sf.lcd_density=480
+	ro.sf.lcd_density=360

2、修改为默认横屏，即修改分辨率

hardware/qcom/display/composer/hwc_display.cpp

@@ -1089,11 +1089,11 @@ HWC2::Error HWCDisplay::GetDisplayAttribute(hwc2_config_t config, HWC2::Attributbreak;case HWC2::Attribute::Width:// *out_value = INT32(variable_config.x_pixels);
-      *out_value = property_get_int32("ro.boot.virtdroid_width", 1080);
+      *out_value = property_get_int32("ro.boot.virtdroid_width", 1920);break;case HWC2::Attribute::Height:// *out_value = INT32(variable_config.y_pixels);
-      *out_value = property_get_int32("ro.boot.virtdroid_height", 1920);
+      *out_value = property_get_int32("ro.boot.virtdroid_height", 1080);break;case HWC2::Attribute::DpiX:*out_value = INT32(variable_config.x_dpi * 1000.0f);

vendor/qcom/proprietary/devicetree-4.19/qcom/project_visional.dtsi

@@ -224,8 +224,8 @@&display_timing {qcom,mdss-dsi-panel-framerate = <144>;/delete-property/ qcom,mdss-dsi-panel-width;
-        qcom,mdss-dsi-panel-width = <1080>;
-        qcom,mdss-dsi-panel-height = <1920>;
+        qcom,mdss-dsi-panel-width = <1920>;
+        qcom,mdss-dsi-panel-height = <1080>;};