diff --git a/services/surfaceflinger/BufferLayer.cpp b/services/surfaceflinger/BufferLayer.cpp
index 4c73b6e..cacad52 100644
--- a/services/surfaceflinger/BufferLayer.cpp
+++ b/services/surfaceflinger/BufferLayer.cpp
@@ -58,8 +58,7 @@
 
 namespace android {
 
-static constexpr float defaultMaxMasteringLuminance = 1000.0;
-static constexpr float defaultMaxContentLuminance = 1000.0;
+static constexpr float defaultMaxLuminance = 1000.0;
 
 BufferLayer::BufferLayer(const LayerCreationArgs& args)
       : Layer(args),
@@ -206,12 +205,24 @@
     layer.source.buffer.isY410BT2020 = isHdrY410();
     bool hasSmpte2086 = mBufferInfo.mHdrMetadata.validTypes & HdrMetadata::SMPTE2086;
     bool hasCta861_3 = mBufferInfo.mHdrMetadata.validTypes & HdrMetadata::CTA861_3;
-    layer.source.buffer.maxMasteringLuminance = hasSmpte2086
-            ? mBufferInfo.mHdrMetadata.smpte2086.maxLuminance
-            : defaultMaxMasteringLuminance;
-    layer.source.buffer.maxContentLuminance = hasCta861_3
-            ? mBufferInfo.mHdrMetadata.cta8613.maxContentLightLevel
-            : defaultMaxContentLuminance;
+    float maxLuminance = 0.f;
+    if (hasSmpte2086 && hasCta861_3) {
+        maxLuminance = std::min(mBufferInfo.mHdrMetadata.smpte2086.maxLuminance,
+                                mBufferInfo.mHdrMetadata.cta8613.maxContentLightLevel);
+    } else if (hasSmpte2086) {
+        maxLuminance = mBufferInfo.mHdrMetadata.smpte2086.maxLuminance;
+    } else if (hasCta861_3) {
+        maxLuminance = mBufferInfo.mHdrMetadata.cta8613.maxContentLightLevel;
+    } else {
+        switch (layer.sourceDataspace & HAL_DATASPACE_TRANSFER_MASK) {
+            case HAL_DATASPACE_TRANSFER_ST2084:
+            case HAL_DATASPACE_TRANSFER_HLG:
+                // Behavior-match previous releases for HDR content
+                maxLuminance = defaultMaxLuminance;
+                break;
+        }
+    }
+    layer.source.buffer.maxLuminanceNits = maxLuminance;
     layer.frameNumber = mCurrentFrameNumber;
     layer.bufferId = mBufferInfo.mBuffer ? mBufferInfo.mBuffer->getBuffer()->getId() : 0;
 
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
index 4976213..af58245 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/Output.h
@@ -181,6 +181,9 @@
     // Sets the output color mode
     virtual void setColorProfile(const ColorProfile&) = 0;
 
+    // Sets current calibrated display brightness information
+    virtual void setDisplayBrightness(float sdrWhitePointNits, float displayBrightnessNits) = 0;
+
     // Outputs a string with a state dump
     virtual void dump(std::string&) const = 0;
 
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
index eeb20fc..07eaaef 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Output.h
@@ -51,6 +51,7 @@
 
     void setColorTransform(const compositionengine::CompositionRefreshArgs&) override;
     void setColorProfile(const ColorProfile&) override;
+    void setDisplayBrightness(float sdrWhitePointNits, float displayBrightnessNits) override;
 
     void dump(std::string&) const override;
     void dumpPlannerInfo(const Vector<String16>& args, std::string&) const override;
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputCompositionState.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputCompositionState.h
index f0ef6d6..d41c2dd 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputCompositionState.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputCompositionState.h
@@ -118,6 +118,12 @@
     // The earliest time to send the present command to the HAL
     std::chrono::steady_clock::time_point earliestPresentTime;
 
+    // Current display brightness
+    float displayBrightnessNits{-1.f};
+
+    // SDR white point
+    float sdrWhitePointNits{-1.f};
+
     // Debugging
     void dump(std::string& result) const;
 };
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
index 5aa53e5..49d93ca 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/mock/Output.h
@@ -43,6 +43,7 @@
 
     MOCK_METHOD1(setColorTransform, void(const compositionengine::CompositionRefreshArgs&));
     MOCK_METHOD1(setColorProfile, void(const ColorProfile&));
+    MOCK_METHOD2(setDisplayBrightness, void(float, float));
 
     MOCK_CONST_METHOD1(dump, void(std::string&));
     MOCK_CONST_METHOD2(dumpPlannerInfo, void(const Vector<String16>&, std::string&));
diff --git a/services/surfaceflinger/CompositionEngine/src/ClientCompositionRequestCache.cpp b/services/surfaceflinger/CompositionEngine/src/ClientCompositionRequestCache.cpp
index 2d9f01b..27b0c80 100644
--- a/services/surfaceflinger/CompositionEngine/src/ClientCompositionRequestCache.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/ClientCompositionRequestCache.cpp
@@ -45,8 +45,7 @@
             lhs.textureTransform == rhs.textureTransform &&
             lhs.usePremultipliedAlpha == rhs.usePremultipliedAlpha &&
             lhs.isOpaque == rhs.isOpaque && lhs.isY410BT2020 == rhs.isY410BT2020 &&
-            lhs.maxMasteringLuminance == rhs.maxMasteringLuminance &&
-            lhs.maxContentLuminance == rhs.maxContentLuminance;
+            lhs.maxLuminanceNits == rhs.maxLuminanceNits;
 }
 
 inline bool equalIgnoringBuffer(const renderengine::LayerSettings& lhs,
diff --git a/services/surfaceflinger/CompositionEngine/src/Output.cpp b/services/surfaceflinger/CompositionEngine/src/Output.cpp
index c809e1a..6c2f9c5 100644
--- a/services/surfaceflinger/CompositionEngine/src/Output.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Output.cpp
@@ -256,6 +256,18 @@
     dirtyEntireOutput();
 }
 
+void Output::setDisplayBrightness(float sdrWhitePointNits, float displayBrightnessNits) {
+    auto& outputState = editState();
+    if (outputState.sdrWhitePointNits == sdrWhitePointNits &&
+        outputState.displayBrightnessNits == displayBrightnessNits) {
+        // Nothing changed
+        return;
+    }
+    outputState.sdrWhitePointNits = sdrWhitePointNits;
+    outputState.displayBrightnessNits = displayBrightnessNits;
+    dirtyEntireOutput();
+}
+
 void Output::dump(std::string& out) const {
     using android::base::StringAppendF;
 
@@ -1032,8 +1044,13 @@
     clientCompositionDisplay.outputDataspace = mDisplayColorProfile->hasWideColorGamut()
             ? outputState.dataspace
             : ui::Dataspace::UNKNOWN;
-    clientCompositionDisplay.maxLuminance =
-            mDisplayColorProfile->getHdrCapabilities().getDesiredMaxLuminance();
+
+    // If we have a valid current display brightness use that, otherwise fall back to the
+    // display's max desired
+    clientCompositionDisplay.maxLuminance = outputState.displayBrightnessNits > 0.f
+            ? outputState.displayBrightnessNits
+            : mDisplayColorProfile->getHdrCapabilities().getDesiredMaxLuminance();
+    clientCompositionDisplay.sdrWhitePointNits = outputState.sdrWhitePointNits;
 
     // Compute the global color transform matrix.
     if (!outputState.usesDeviceComposition && !getSkipColorTransform()) {
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 2dace92..6f830aa 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -306,6 +306,7 @@
 Dataspace SurfaceFlinger::wideColorGamutCompositionDataspace = Dataspace::V0_SRGB;
 ui::PixelFormat SurfaceFlinger::wideColorGamutCompositionPixelFormat = ui::PixelFormat::RGBA_8888;
 bool SurfaceFlinger::useFrameRateApi;
+bool SurfaceFlinger::enableSdrDimming;
 
 std::string decodeDisplayColorSetting(DisplayColorSetting displayColorSetting) {
     switch(displayColorSetting) {
@@ -471,6 +472,9 @@
     base::SetProperty(KERNEL_IDLE_TIMER_PROP, mKernelIdleTimerEnabled ? "true" : "false");
 
     mRefreshRateOverlaySpinner = property_get_bool("sf.debug.show_refresh_rate_overlay_spinner", 0);
+
+    // Debug property overrides ro. property
+    enableSdrDimming = property_get_bool("debug.sf.enable_sdr_dimming", enable_sdr_dimming(false));
 }
 
 SurfaceFlinger::~SurfaceFlinger() = default;
@@ -1480,8 +1484,13 @@
     }
 
     return ftl::chain(schedule([=]() MAIN_THREAD {
-               if (const auto displayId = getPhysicalDisplayIdLocked(displayToken)) {
-                   return getHwComposer().setDisplayBrightness(*displayId,
+               if (const auto display = getDisplayDeviceLocked(displayToken)) {
+                   if (enableSdrDimming) {
+                       display->getCompositionDisplay()
+                               ->setDisplayBrightness(brightness.sdrWhitePointNits,
+                                                      brightness.displayBrightnessNits);
+                   }
+                   return getHwComposer().setDisplayBrightness(display->getPhysicalId(),
                                                                brightness.displayBrightness);
                } else {
                    ALOGE("%s: Invalid display token %p", __FUNCTION__, displayToken.get());
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index cf1a545..8523b1a 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -271,6 +271,10 @@
 
     static constexpr SkipInitializationTag SkipInitialization;
 
+    // Whether or not SDR layers should be dimmed to the desired SDR white point instead of
+    // being treated as native display brightness
+    static bool enableSdrDimming;
+
     // must be called before clients can connect
     void init() ANDROID_API;
 
diff --git a/services/surfaceflinger/SurfaceFlingerProperties.cpp b/services/surfaceflinger/SurfaceFlingerProperties.cpp
index b3dca78..4a69c8f 100644
--- a/services/surfaceflinger/SurfaceFlingerProperties.cpp
+++ b/services/surfaceflinger/SurfaceFlingerProperties.cpp
@@ -321,6 +321,10 @@
     return defaultValue;
 }
 
+bool enable_sdr_dimming(bool defaultValue) {
+    return SurfaceFlingerProperties::enable_sdr_dimming().value_or(defaultValue);
+}
+
 int32_t display_update_imminent_timeout_ms(int32_t defaultValue) {
     auto temp = SurfaceFlingerProperties::display_update_imminent_timeout_ms();
     if (temp.has_value()) {
diff --git a/services/surfaceflinger/SurfaceFlingerProperties.h b/services/surfaceflinger/SurfaceFlingerProperties.h
index b19d216..039d316 100644
--- a/services/surfaceflinger/SurfaceFlingerProperties.h
+++ b/services/surfaceflinger/SurfaceFlingerProperties.h
@@ -102,6 +102,8 @@
 
 bool enable_layer_caching(bool defaultValue);
 
+bool enable_sdr_dimming(bool defaultValue);
+
 } // namespace sysprop
 } // namespace android
 #endif // SURFACEFLINGERPROPERTIES_H_
diff --git a/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop b/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop
index ee5542d..78f8a2f 100644
--- a/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop
+++ b/services/surfaceflinger/sysprop/SurfaceFlingerProperties.sysprop
@@ -463,3 +463,12 @@
     access: Readonly
     prop_name: "ro.surface_flinger.enable_layer_caching"
 }
+
+# Enables SDR layer dimming
+prop {
+    api_name: "enable_sdr_dimming"
+    type: Boolean
+    scope: Public
+    access: Readonly
+    prop_name: "ro.surface_flinger.enable_sdr_dimming"
+}
\ No newline at end of file
diff --git a/services/surfaceflinger/sysprop/api/SurfaceFlingerProperties-current.txt b/services/surfaceflinger/sysprop/api/SurfaceFlingerProperties-current.txt
index 47e14f6..9c567d6 100644
--- a/services/surfaceflinger/sysprop/api/SurfaceFlingerProperties-current.txt
+++ b/services/surfaceflinger/sysprop/api/SurfaceFlingerProperties-current.txt
@@ -53,6 +53,10 @@
     prop_name: "ro.surface_flinger.protected_contents"
   }
   prop {
+    api_name: "enable_sdr_dimming"
+    prop_name: "ro.surface_flinger.enable_sdr_dimming"
+  }
+  prop {
     api_name: "force_hwc_copy_for_virtual_displays"
     prop_name: "ro.surface_flinger.force_hwc_copy_for_virtual_displays"
   }