End-to-end plumbing for dimming SDR layers

Model here is:
* HDR luminance is set to the current display brightness
* SDR luminance is set to the current SDR white point reported by
DisplayManager

Ideally we use scene-referred white points instead, so:
* PQ is always 10k nits
* HLG is always 1k nits
* Everything else is 150-200 nits

So relative dimming thresholds are fixed. But right now this is visually
less jarring (otherwise youtube UI will suddenly dim when autoplaying
HDR video).

Bug: 200310158
Test: Verified that plumbing sdr white point is sent to renderengine
Test: librenderengine_test
Test: libcompositionengine_test
Test: DataspaceUtils_test

Change-Id: I5bcea7941935c43e57cd5434e1ec69b41d31f2b4
diff --git a/libs/renderengine/include/renderengine/DisplaySettings.h b/libs/renderengine/include/renderengine/DisplaySettings.h
index d395d06..b4cab39 100644
--- a/libs/renderengine/include/renderengine/DisplaySettings.h
+++ b/libs/renderengine/include/renderengine/DisplaySettings.h
@@ -57,8 +57,10 @@
     // orientation.
     uint32_t orientation = ui::Transform::ROT_0;
 
-    // SDR white point, -1f if unknown
-    float sdrWhitePointNits = -1.f;
+    // Target luminance of the display. -1f if unknown.
+    // All layers will be dimmed by (max(layer white points) / targetLuminanceNits).
+    // If the target luminance is unknown, then no display-level dimming occurs.
+    float targetLuminanceNits = -1.f;
 };
 
 static inline bool operator==(const DisplaySettings& lhs, const DisplaySettings& rhs) {
diff --git a/libs/renderengine/include/renderengine/LayerSettings.h b/libs/renderengine/include/renderengine/LayerSettings.h
index 715f3f8..702e8b0 100644
--- a/libs/renderengine/include/renderengine/LayerSettings.h
+++ b/libs/renderengine/include/renderengine/LayerSettings.h
@@ -171,6 +171,12 @@
 
     // Name associated with the layer for debugging purposes.
     std::string name;
+
+    // Luminance of the white point for this layer. Used for linear dimming.
+    // Individual layers will be dimmed by (whitePointNits / maxWhitePoint).
+    // If white point nits are unknown, then this layer is assumed to have the
+    // same luminance as the brightest layer in the scene.
+    float whitePointNits = -1.f;
 };
 
 // Keep in sync with custom comparison function in
diff --git a/libs/renderengine/skia/SkiaGLRenderEngine.cpp b/libs/renderengine/skia/SkiaGLRenderEngine.cpp
index 376e279..cc90946 100644
--- a/libs/renderengine/skia/SkiaGLRenderEngine.cpp
+++ b/libs/renderengine/skia/SkiaGLRenderEngine.cpp
@@ -46,6 +46,7 @@
 #include <cmath>
 #include <cstdint>
 #include <memory>
+#include <numeric>
 
 #include "../gl/GLExtensions.h"
 #include "Cache.h"
@@ -612,33 +613,33 @@
     AutoBackendTexture::CleanupManager& mMgr;
 };
 
-sk_sp<SkShader> SkiaGLRenderEngine::createRuntimeEffectShader(sk_sp<SkShader> shader,
-                                                              const LayerSettings& layer,
-                                                              const DisplaySettings& display,
-                                                              bool undoPremultipliedAlpha,
-                                                              bool requiresLinearEffect) {
-    const auto stretchEffect = layer.stretchEffect;
+sk_sp<SkShader> SkiaGLRenderEngine::createRuntimeEffectShader(
+        const RuntimeEffectShaderParameters& parameters) {
     // The given surface will be stretched by HWUI via matrix transformation
     // which gets similar results for most surfaces
     // Determine later on if we need to leverage the stertch shader within
     // surface flinger
+    const auto& stretchEffect = parameters.layer.stretchEffect;
+    auto shader = parameters.shader;
     if (stretchEffect.hasEffect()) {
-        const auto targetBuffer = layer.source.buffer.buffer;
+        const auto targetBuffer = parameters.layer.source.buffer.buffer;
         const auto graphicBuffer = targetBuffer ? targetBuffer->getBuffer() : nullptr;
-        if (graphicBuffer && shader) {
+        if (graphicBuffer && parameters.shader) {
             shader = mStretchShaderFactory.createSkShader(shader, stretchEffect);
         }
     }
 
-    if (requiresLinearEffect) {
-        const ui::Dataspace inputDataspace =
-                mUseColorManagement ? layer.sourceDataspace : ui::Dataspace::V0_SRGB_LINEAR;
-        const ui::Dataspace outputDataspace =
-                mUseColorManagement ? display.outputDataspace : ui::Dataspace::V0_SRGB_LINEAR;
+    if (parameters.requiresLinearEffect) {
+        const ui::Dataspace inputDataspace = mUseColorManagement ? parameters.layer.sourceDataspace
+                                                                 : ui::Dataspace::V0_SRGB_LINEAR;
+        const ui::Dataspace outputDataspace = mUseColorManagement
+                ? parameters.display.outputDataspace
+                : ui::Dataspace::V0_SRGB_LINEAR;
 
-        auto effect = shaders::LinearEffect{.inputDataspace = inputDataspace,
-                                            .outputDataspace = outputDataspace,
-                                            .undoPremultipliedAlpha = undoPremultipliedAlpha};
+        auto effect =
+                shaders::LinearEffect{.inputDataspace = inputDataspace,
+                                      .outputDataspace = outputDataspace,
+                                      .undoPremultipliedAlpha = parameters.undoPremultipliedAlpha};
 
         auto effectIter = mRuntimeEffects.find(effect);
         sk_sp<SkRuntimeEffect> runtimeEffect = nullptr;
@@ -648,16 +649,16 @@
         } else {
             runtimeEffect = effectIter->second;
         }
-        float maxLuminance = layer.source.buffer.maxLuminanceNits;
-        // If the buffer doesn't have a max luminance, treat it as SDR & use the display's SDR
-        // white point
-        if (maxLuminance <= 0.f) {
-            maxLuminance = display.sdrWhitePointNits;
-        }
-        return createLinearEffectShader(shader, effect, runtimeEffect, layer.colorTransform,
-                                        display.maxLuminance, maxLuminance);
+        mat4 colorTransform = parameters.layer.colorTransform;
+
+        colorTransform *=
+                mat4::scale(vec4(parameters.layerDimmingRatio, parameters.layerDimmingRatio,
+                                 parameters.layerDimmingRatio, 1.f));
+        return createLinearEffectShader(parameters.shader, effect, runtimeEffect, colorTransform,
+                                        parameters.display.maxLuminance,
+                                        parameters.layer.source.buffer.maxLuminanceNits);
     }
-    return shader;
+    return parameters.shader;
 }
 
 void SkiaGLRenderEngine::initCanvas(SkCanvas* canvas, const DisplaySettings& display) {
@@ -730,6 +731,11 @@
     return roundedRect;
 }
 
+static bool equalsWithinMargin(float expected, float value, float margin) {
+    LOG_ALWAYS_FATAL_IF(margin < 0.f, "Margin is negative!");
+    return std::abs(expected - value) < margin;
+}
+
 void SkiaGLRenderEngine::drawLayersInternal(
         const std::shared_ptr<std::promise<RenderEngineResult>>&& resultPromise,
         const DisplaySettings& display, const std::vector<LayerSettings>& layers,
@@ -791,6 +797,18 @@
     const bool ctModifiesAlpha =
             displayColorTransform && !displayColorTransform->isAlphaUnchanged();
 
+    // Find the max layer white point to determine the max luminance of the scene...
+    const float maxLayerWhitePoint = std::transform_reduce(
+            layers.cbegin(), layers.cend(), 0.f,
+            [](float left, float right) { return std::max(left, right); },
+            [&](const auto& l) { return l.whitePointNits; });
+
+    // ...and compute the dimming ratio if dimming is requested
+    const float displayDimmingRatio = display.targetLuminanceNits > 0.f &&
+                    maxLayerWhitePoint > 0.f && display.targetLuminanceNits > maxLayerWhitePoint
+            ? maxLayerWhitePoint / display.targetLuminanceNits
+            : 1.f;
+
     // Find if any layers have requested blur, we'll use that info to decide when to render to an
     // offscreen buffer and when to render to the native buffer.
     sk_sp<SkSurface> activeSurface(dstSurface);
@@ -964,11 +982,14 @@
             drawShadow(canvas, rrect, layer.shadow);
         }
 
+        const float layerDimmingRatio = layer.whitePointNits <= 0.f
+                ? displayDimmingRatio
+                : (layer.whitePointNits / maxLayerWhitePoint) * displayDimmingRatio;
+
         const bool requiresLinearEffect = layer.colorTransform != mat4() ||
                 (mUseColorManagement &&
                  needsToneMapping(layer.sourceDataspace, display.outputDataspace)) ||
-                (display.sdrWhitePointNits > 0.f &&
-                 display.sdrWhitePointNits != display.maxLuminance);
+                !equalsWithinMargin(1.f, layerDimmingRatio, 0.001f);
 
         // quick abort from drawing the remaining portion of the layer
         if (layer.skipContentDraw ||
@@ -1067,9 +1088,20 @@
                                                            toSkColorSpace(layerDataspace)));
             }
 
-            paint.setShader(createRuntimeEffectShader(shader, layer, display,
-                                                      !item.isOpaque && item.usePremultipliedAlpha,
-                                                      requiresLinearEffect));
+            paint.setShader(createRuntimeEffectShader(
+                    RuntimeEffectShaderParameters{.shader = shader,
+                                                  .layer = layer,
+                                                  .display = display,
+                                                  .undoPremultipliedAlpha = !item.isOpaque &&
+                                                          item.usePremultipliedAlpha,
+                                                  .requiresLinearEffect = requiresLinearEffect,
+                                                  .layerDimmingRatio = layerDimmingRatio}));
+
+            // Turn on dithering when dimming beyond this threshold.
+            static constexpr float kDimmingThreshold = 0.2f;
+            if (layerDimmingRatio <= kDimmingThreshold) {
+                paint.setDither(true);
+            }
             paint.setAlphaf(layer.alpha);
         } else {
             ATRACE_NAME("DrawColor");
@@ -1079,9 +1111,13 @@
                                                                 .fB = color.b,
                                                                 .fA = layer.alpha},
                                                       toSkColorSpace(layerDataspace));
-            paint.setShader(createRuntimeEffectShader(shader, layer, display,
-                                                      /* undoPremultipliedAlpha */ false,
-                                                      requiresLinearEffect));
+            paint.setShader(createRuntimeEffectShader(
+                    RuntimeEffectShaderParameters{.shader = shader,
+                                                  .layer = layer,
+                                                  .display = display,
+                                                  .undoPremultipliedAlpha = false,
+                                                  .requiresLinearEffect = requiresLinearEffect,
+                                                  .layerDimmingRatio = layerDimmingRatio}));
         }
 
         if (layer.disableBlending) {
diff --git a/libs/renderengine/skia/SkiaGLRenderEngine.h b/libs/renderengine/skia/SkiaGLRenderEngine.h
index 53792f9..a650313 100644
--- a/libs/renderengine/skia/SkiaGLRenderEngine.h
+++ b/libs/renderengine/skia/SkiaGLRenderEngine.h
@@ -106,12 +106,18 @@
     void initCanvas(SkCanvas* canvas, const DisplaySettings& display);
     void drawShadow(SkCanvas* canvas, const SkRRect& casterRRect,
                     const ShadowSettings& shadowSettings);
+
     // If requiresLinearEffect is true or the layer has a stretchEffect a new shader is returned.
     // Otherwise it returns the input shader.
-    sk_sp<SkShader> createRuntimeEffectShader(sk_sp<SkShader> shader, const LayerSettings& layer,
-                                              const DisplaySettings& display,
-                                              bool undoPremultipliedAlpha,
-                                              bool requiresLinearEffect);
+    struct RuntimeEffectShaderParameters {
+        sk_sp<SkShader> shader;
+        const LayerSettings& layer;
+        const DisplaySettings& display;
+        bool undoPremultipliedAlpha;
+        bool requiresLinearEffect;
+        float layerDimmingRatio;
+    };
+    sk_sp<SkShader> createRuntimeEffectShader(const RuntimeEffectShaderParameters&);
 
     EGLDisplay mEGLDisplay;
     EGLContext mEGLContext;
diff --git a/libs/renderengine/tests/RenderEngineTest.cpp b/libs/renderengine/tests/RenderEngineTest.cpp
index 8259063..eb2b2dc 100644
--- a/libs/renderengine/tests/RenderEngineTest.cpp
+++ b/libs/renderengine/tests/RenderEngineTest.cpp
@@ -208,6 +208,21 @@
                                                  renderengine::ExternalTexture::Usage::WRITEABLE);
     }
 
+    std::shared_ptr<renderengine::ExternalTexture> allocateAndFillSourceBuffer(uint32_t width,
+                                                                               uint32_t height,
+                                                                               ubyte4 color) {
+        const auto buffer = allocateSourceBuffer(width, height);
+        uint8_t* pixels;
+        buffer->getBuffer()->lock(GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
+                                  reinterpret_cast<void**>(&pixels));
+        pixels[0] = color.r;
+        pixels[1] = color.g;
+        pixels[2] = color.b;
+        pixels[3] = color.a;
+        buffer->getBuffer()->unlock();
+        return buffer;
+    }
+
     RenderEngineTest() {
         const ::testing::TestInfo* const test_info =
                 ::testing::UnitTest::GetInstance()->current_test_info();
@@ -2195,6 +2210,133 @@
     expectBufferColor(rect, 0, 128, 0, 128);
 }
 
+TEST_P(RenderEngineTest, testDimming) {
+    if (GetParam()->type() == renderengine::RenderEngine::RenderEngineType::GLES) {
+        return;
+    }
+    initializeRenderEngine();
+
+    const auto displayRect = Rect(3, 1);
+    const renderengine::DisplaySettings display{
+            .physicalDisplay = displayRect,
+            .clip = displayRect,
+            .outputDataspace = ui::Dataspace::V0_SRGB_LINEAR,
+            .targetLuminanceNits = 1000.f,
+    };
+
+    const auto greenBuffer = allocateAndFillSourceBuffer(1, 1, ubyte4(0, 255, 0, 255));
+    const auto blueBuffer = allocateAndFillSourceBuffer(1, 1, ubyte4(0, 0, 255, 255));
+    const auto redBuffer = allocateAndFillSourceBuffer(1, 1, ubyte4(255, 0, 0, 255));
+
+    const renderengine::LayerSettings greenLayer{
+            .geometry.boundaries = FloatRect(0.f, 0.f, 1.f, 1.f),
+            .source =
+                    renderengine::PixelSource{
+                            .buffer =
+                                    renderengine::Buffer{
+                                            .buffer = greenBuffer,
+                                            .usePremultipliedAlpha = true,
+                                    },
+                    },
+            .alpha = 1.0f,
+            .sourceDataspace = ui::Dataspace::V0_SRGB_LINEAR,
+            .whitePointNits = 200.f,
+    };
+
+    const renderengine::LayerSettings blueLayer{
+            .geometry.boundaries = FloatRect(1.f, 0.f, 2.f, 1.f),
+            .source =
+                    renderengine::PixelSource{
+                            .buffer =
+                                    renderengine::Buffer{
+                                            .buffer = blueBuffer,
+                                            .usePremultipliedAlpha = true,
+                                    },
+                    },
+            .alpha = 1.0f,
+            .sourceDataspace = ui::Dataspace::V0_SRGB_LINEAR,
+            .whitePointNits = 1000.f / 51.f,
+    };
+
+    const renderengine::LayerSettings redLayer{
+            .geometry.boundaries = FloatRect(2.f, 0.f, 3.f, 1.f),
+            .source =
+                    renderengine::PixelSource{
+                            .buffer =
+                                    renderengine::Buffer{
+                                            .buffer = redBuffer,
+                                            .usePremultipliedAlpha = true,
+                                    },
+                    },
+            .alpha = 1.0f,
+            .sourceDataspace = ui::Dataspace::V0_SRGB_LINEAR,
+            // When the white point is not set for a layer, just ignore it and treat it as the same
+            // as the max layer
+            .whitePointNits = -1.f,
+    };
+
+    std::vector<renderengine::LayerSettings> layers{greenLayer, blueLayer, redLayer};
+    invokeDraw(display, layers);
+
+    expectBufferColor(Rect(1, 1), 0, 51, 0, 255, 1);
+    expectBufferColor(Rect(1, 0, 2, 1), 0, 0, 5, 255, 1);
+    expectBufferColor(Rect(2, 0, 3, 1), 51, 0, 0, 255, 1);
+}
+
+TEST_P(RenderEngineTest, testDimming_withoutTargetLuminance) {
+    initializeRenderEngine();
+    if (GetParam()->type() == renderengine::RenderEngine::RenderEngineType::GLES) {
+        return;
+    }
+
+    const auto displayRect = Rect(2, 1);
+    const renderengine::DisplaySettings display{
+            .physicalDisplay = displayRect,
+            .clip = displayRect,
+            .outputDataspace = ui::Dataspace::V0_SRGB_LINEAR,
+            .targetLuminanceNits = -1.f,
+    };
+
+    const auto greenBuffer = allocateAndFillSourceBuffer(1, 1, ubyte4(0, 255, 0, 255));
+    const auto blueBuffer = allocateAndFillSourceBuffer(1, 1, ubyte4(0, 0, 255, 255));
+
+    const renderengine::LayerSettings greenLayer{
+            .geometry.boundaries = FloatRect(0.f, 0.f, 1.f, 1.f),
+            .source =
+                    renderengine::PixelSource{
+                            .buffer =
+                                    renderengine::Buffer{
+                                            .buffer = greenBuffer,
+                                            .usePremultipliedAlpha = true,
+                                    },
+                    },
+            .alpha = 1.0f,
+            .sourceDataspace = ui::Dataspace::V0_SRGB_LINEAR,
+            .whitePointNits = 200.f,
+    };
+
+    const renderengine::LayerSettings blueLayer{
+            .geometry.boundaries = FloatRect(1.f, 0.f, 2.f, 1.f),
+            .source =
+                    renderengine::PixelSource{
+                            .buffer =
+                                    renderengine::Buffer{
+                                            .buffer = blueBuffer,
+                                            .usePremultipliedAlpha = true,
+                                    },
+                    },
+            .alpha = 1.0f,
+            .sourceDataspace = ui::Dataspace::V0_SRGB_LINEAR,
+            .whitePointNits = 1000.f,
+    };
+
+    std::vector<renderengine::LayerSettings> layers{greenLayer, blueLayer};
+    invokeDraw(display, layers);
+
+    expectBufferColor(Rect(1, 1), 0, 51, 0, 255, 1);
+    expectBufferColor(Rect(1, 0, 2, 1), 0, 0, 255, 255);
+}
+
 TEST_P(RenderEngineTest, test_isOpaque) {
     initializeRenderEngine();
 
diff --git a/libs/ui/include_types/ui/DataspaceUtils.h b/libs/ui/include_types/ui/DataspaceUtils.h
new file mode 100644
index 0000000..a461cb4
--- /dev/null
+++ b/libs/ui/include_types/ui/DataspaceUtils.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <ui/GraphicTypes.h>
+
+namespace android {
+
+inline bool isHdrDataspace(ui::Dataspace dataspace) {
+    const auto transfer = dataspace & HAL_DATASPACE_TRANSFER_MASK;
+
+    return transfer == HAL_DATASPACE_TRANSFER_ST2084 || transfer == HAL_DATASPACE_TRANSFER_HLG;
+}
+
+} // namespace android
\ No newline at end of file
diff --git a/libs/ui/tests/Android.bp b/libs/ui/tests/Android.bp
index 0ee15f2..22fbf45 100644
--- a/libs/ui/tests/Android.bp
+++ b/libs/ui/tests/Android.bp
@@ -163,3 +163,13 @@
         "-Werror",
     ],
 }
+
+cc_test {
+    name: "DataspaceUtils_test",
+    shared_libs: ["libui"],
+    srcs: ["DataspaceUtils_test.cpp"],
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+}
diff --git a/libs/ui/tests/DataspaceUtils_test.cpp b/libs/ui/tests/DataspaceUtils_test.cpp
new file mode 100644
index 0000000..3e09671
--- /dev/null
+++ b/libs/ui/tests/DataspaceUtils_test.cpp
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#undef LOG_TAG
+#define LOG_TAG "DataspaceUtilsTest"
+
+#include <gtest/gtest.h>
+#include <ui/DataspaceUtils.h>
+
+namespace android {
+
+class DataspaceUtilsTest : public testing::Test {};
+
+TEST_F(DataspaceUtilsTest, isHdrDataspace) {
+    EXPECT_TRUE(isHdrDataspace(ui::Dataspace::BT2020_ITU_HLG));
+    EXPECT_TRUE(isHdrDataspace(ui::Dataspace::BT2020_ITU_PQ));
+    EXPECT_TRUE(isHdrDataspace(ui::Dataspace::BT2020_PQ));
+    EXPECT_TRUE(isHdrDataspace(ui::Dataspace::BT2020_HLG));
+
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::V0_SRGB_LINEAR));
+    // scRGB defines a very wide gamut but not an expanded luminance range
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::V0_SCRGB_LINEAR));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::V0_SRGB));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::V0_SCRGB));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::V0_JFIF));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::V0_BT601_625));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::V0_BT601_525));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::V0_BT709));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::DCI_P3_LINEAR));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::DCI_P3));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::DISPLAY_P3_LINEAR));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::DISPLAY_P3));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::ADOBE_RGB));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::BT2020_LINEAR));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::BT2020));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::BT2020_ITU));
+    EXPECT_FALSE(isHdrDataspace(ui::Dataspace::DISPLAY_BT2020));
+}
+
+} // namespace android
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h
index ac243c0..e77e155 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h
@@ -134,6 +134,9 @@
 
         // Configure layer settings for using blurs
         BlurSetting blurSetting;
+
+        // Requested white point of the layer in nits
+        const float whitePointNits;
     };
 
     // A superset of LayerSettings required by RenderEngine to compose a layer
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
index b407267..3571e11 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/Display.h
@@ -76,7 +76,7 @@
     virtual void applyChangedTypesToLayers(const ChangedTypes&);
     virtual void applyDisplayRequests(const DisplayRequests&);
     virtual void applyLayerRequestsToLayers(const LayerRequests&);
-    virtual void applyClientTargetRequests(const ClientTargetProperty&);
+    virtual void applyClientTargetRequests(const ClientTargetProperty&, float whitePointNits);
 
     // Internal
     virtual void setConfiguration(const compositionengine::DisplayCreationArgs&);
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputCompositionState.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputCompositionState.h
index 44f754f..c5b6443 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputCompositionState.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputCompositionState.h
@@ -127,6 +127,9 @@
     // SDR white point
     float sdrWhitePointNits{-1.f};
 
+    // White point of the client target
+    float clientTargetWhitePointNits{-1.f};
+
     // Debugging
     void dump(std::string& result) const;
 };
diff --git a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputLayerCompositionState.h b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputLayerCompositionState.h
index 7564c54..627b80b 100644
--- a/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputLayerCompositionState.h
+++ b/services/surfaceflinger/CompositionEngine/include/compositionengine/impl/OutputLayerCompositionState.h
@@ -146,6 +146,10 @@
 
     // Timestamp for when the layer is queued for client composition
     nsecs_t clientCompositionTimestamp{0};
+
+    // White point of the layer, in nits.
+    static constexpr float kDefaultWhitePointNits = 200.f;
+    float whitePointNits = kDefaultWhitePointNits;
 };
 
 } // namespace compositionengine::impl
diff --git a/services/surfaceflinger/CompositionEngine/src/Display.cpp b/services/surfaceflinger/CompositionEngine/src/Display.cpp
index 02fa49f..4603e6b 100644
--- a/services/surfaceflinger/CompositionEngine/src/Display.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Display.cpp
@@ -237,7 +237,8 @@
         applyChangedTypesToLayers(changes->changedTypes);
         applyDisplayRequests(changes->displayRequests);
         applyLayerRequestsToLayers(changes->layerRequests);
-        applyClientTargetRequests(changes->clientTargetProperty);
+        applyClientTargetRequests(changes->clientTargetProperty,
+                                  changes->clientTargetWhitePointNits);
     }
 
     // Determine what type of composition we are doing from the final state
@@ -309,12 +310,14 @@
     }
 }
 
-void Display::applyClientTargetRequests(const ClientTargetProperty& clientTargetProperty) {
+void Display::applyClientTargetRequests(const ClientTargetProperty& clientTargetProperty,
+                                        float whitePointNits) {
     if (clientTargetProperty.dataspace == ui::Dataspace::UNKNOWN) {
         return;
     }
 
     editState().dataspace = clientTargetProperty.dataspace;
+    editState().clientTargetWhitePointNits = whitePointNits;
     getRenderSurface()->setBufferDataspace(clientTargetProperty.dataspace);
     getRenderSurface()->setBufferPixelFormat(clientTargetProperty.pixelFormat);
 }
diff --git a/services/surfaceflinger/CompositionEngine/src/Output.cpp b/services/surfaceflinger/CompositionEngine/src/Output.cpp
index 6800004..d503153 100644
--- a/services/surfaceflinger/CompositionEngine/src/Output.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Output.cpp
@@ -1057,7 +1057,7 @@
     clientCompositionDisplay.maxLuminance = outputState.displayBrightnessNits > 0.f
             ? outputState.displayBrightnessNits
             : mDisplayColorProfile->getHdrCapabilities().getDesiredMaxLuminance();
-    clientCompositionDisplay.sdrWhitePointNits = outputState.sdrWhitePointNits;
+    clientCompositionDisplay.targetLuminanceNits = outputState.clientTargetWhitePointNits;
 
     // Compute the global color transform matrix.
     if (!outputState.usesDeviceComposition && !getSkipColorTransform()) {
@@ -1217,7 +1217,8 @@
                                        .dataspace = outputDataspace,
                                        .realContentIsVisible = realContentIsVisible,
                                        .clearContent = !clientComposition,
-                                       .blurSetting = blurSetting};
+                                       .blurSetting = blurSetting,
+                                       .whitePointNits = layerState.whitePointNits};
                 results = layerFE.prepareClientCompositionList(targetSettings);
                 if (realContentIsVisible && !results.empty()) {
                     layer->editState().clientCompositionTimestamp = systemTime();
diff --git a/services/surfaceflinger/CompositionEngine/src/OutputLayer.cpp b/services/surfaceflinger/CompositionEngine/src/OutputLayer.cpp
index cf76183..b010d9f 100644
--- a/services/surfaceflinger/CompositionEngine/src/OutputLayer.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/OutputLayer.cpp
@@ -24,6 +24,9 @@
 #include <compositionengine/impl/OutputLayer.h>
 #include <compositionengine/impl/OutputLayerCompositionState.h>
 #include <cstdint>
+#include "system/graphics-base-v1.0.h"
+
+#include <ui/DataspaceUtils.h>
 
 // TODO(b/129481165): remove the #pragma below and fix conversion issues
 #pragma clang diagnostic push
@@ -317,6 +320,14 @@
             ? outputState.targetDataspace
             : layerFEState->dataspace;
 
+    // For hdr content, treat the white point as the display brightness - HDR content should not be
+    // boosted or dimmed.
+    if (isHdrDataspace(state.dataspace)) {
+        state.whitePointNits = getOutput().getState().displayBrightnessNits;
+    } else {
+        state.whitePointNits = getOutput().getState().sdrWhitePointNits;
+    }
+
     // These are evaluated every frame as they can potentially change at any
     // time.
     if (layerFEState->forceClientComposition || !profile.isDataspaceSupported(state.dataspace) ||
@@ -479,6 +490,16 @@
         ALOGE("[%s] Failed to set dataspace %d: %s (%d)", getLayerFE().getDebugName(), dataspace,
               to_string(error).c_str(), static_cast<int32_t>(error));
     }
+
+    // Don't dim cached layers
+    const auto whitePointNits = outputDependentState.overrideInfo.buffer
+            ? getOutput().getState().displayBrightnessNits
+            : outputDependentState.whitePointNits;
+
+    if (auto error = hwcLayer->setWhitePointNits(whitePointNits); error != hal::Error::NONE) {
+        ALOGE("[%s] Failed to set white point %f: %s (%d)", getLayerFE().getDebugName(),
+              whitePointNits, to_string(error).c_str(), static_cast<int32_t>(error));
+    }
 }
 
 void OutputLayer::writeOutputIndependentPerFrameStateToHWC(
diff --git a/services/surfaceflinger/CompositionEngine/src/planner/CachedSet.cpp b/services/surfaceflinger/CompositionEngine/src/planner/CachedSet.cpp
index ff96d94..2203f22 100644
--- a/services/surfaceflinger/CompositionEngine/src/planner/CachedSet.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/planner/CachedSet.cpp
@@ -170,6 +170,7 @@
             .clip = viewport,
             .outputDataspace = outputDataspace,
             .orientation = orientation,
+            .targetLuminanceNits = outputState.displayBrightnessNits,
     };
 
     LayerFE::ClientCompositionTargetSettings targetSettings{
@@ -182,6 +183,7 @@
             .realContentIsVisible = true,
             .clearContent = false,
             .blurSetting = LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            .whitePointNits = outputState.displayBrightnessNits,
     };
 
     std::vector<renderengine::LayerSettings> layerSettings;
diff --git a/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp b/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp
index ed235b8..568efce 100644
--- a/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/DisplayTest.cpp
@@ -596,6 +596,7 @@
             hal::DisplayRequest::FLIP_CLIENT_TARGET,
             {{nullptr, hal::LayerRequest::CLEAR_CLIENT_TARGET}},
             {hal::PixelFormat::RGBA_8888, hal::Dataspace::UNKNOWN},
+            -1.f,
     };
 
     // Since two calls are made to anyLayersRequireClientComposition with different return
@@ -788,15 +789,18 @@
             .dataspace = hal::Dataspace::STANDARD_BT470M,
     };
 
+    static constexpr float kWhitePointNits = 800.f;
+
     mock::RenderSurface* renderSurface = new StrictMock<mock::RenderSurface>();
     mDisplay->setRenderSurfaceForTest(std::unique_ptr<RenderSurface>(renderSurface));
 
     EXPECT_CALL(*renderSurface, setBufferPixelFormat(clientTargetProperty.pixelFormat));
     EXPECT_CALL(*renderSurface, setBufferDataspace(clientTargetProperty.dataspace));
-    mDisplay->applyClientTargetRequests(clientTargetProperty);
+    mDisplay->applyClientTargetRequests(clientTargetProperty, kWhitePointNits);
 
     auto& state = mDisplay->getState();
     EXPECT_EQ(clientTargetProperty.dataspace, state.dataspace);
+    EXPECT_EQ(kWhitePointNits, state.clientTargetWhitePointNits);
 }
 
 /*
diff --git a/services/surfaceflinger/CompositionEngine/tests/MockHWC2.h b/services/surfaceflinger/CompositionEngine/tests/MockHWC2.h
index 9518659..9e08f9e 100644
--- a/services/surfaceflinger/CompositionEngine/tests/MockHWC2.h
+++ b/services/surfaceflinger/CompositionEngine/tests/MockHWC2.h
@@ -71,6 +71,7 @@
     MOCK_METHOD1(setColorTransform, Error(const android::mat4&));
     MOCK_METHOD3(setLayerGenericMetadata,
                  Error(const std::string&, bool, const std::vector<uint8_t>&));
+    MOCK_METHOD1(setWhitePointNits, Error(float));
 };
 
 } // namespace mock
diff --git a/services/surfaceflinger/CompositionEngine/tests/OutputLayerTest.cpp b/services/surfaceflinger/CompositionEngine/tests/OutputLayerTest.cpp
index fd584fd..207c31e 100644
--- a/services/surfaceflinger/CompositionEngine/tests/OutputLayerTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/OutputLayerTest.cpp
@@ -652,6 +652,22 @@
     EXPECT_EQ(ui::Dataspace::V0_SCRGB, mOutputLayer.getState().dataspace);
 }
 
+TEST_F(OutputLayerUpdateCompositionStateTest, setsWhitePointNitsCorrectly) {
+    mOutputState.sdrWhitePointNits = 200.f;
+    mOutputState.displayBrightnessNits = 800.f;
+
+    mLayerFEState.dataspace = ui::Dataspace::DISPLAY_P3;
+    mLayerFEState.isColorspaceAgnostic = false;
+    mOutputLayer.updateCompositionState(false, false, ui::Transform::RotationFlags::ROT_0);
+    EXPECT_EQ(mOutputState.sdrWhitePointNits, mOutputLayer.getState().whitePointNits);
+
+    mLayerFEState.dataspace = ui::Dataspace::BT2020_ITU_PQ;
+    mLayerFEState.isColorspaceAgnostic = false;
+    mOutputLayer.updateCompositionState(false, false, ui::Transform::RotationFlags::ROT_0);
+
+    EXPECT_EQ(mOutputState.displayBrightnessNits, mOutputLayer.getState().whitePointNits);
+}
+
 TEST_F(OutputLayerUpdateCompositionStateTest, doesNotRecomputeGeometryIfNotRequested) {
     mOutputLayer.editState().forceClientComposition = false;
 
@@ -728,6 +744,8 @@
     static constexpr int kOverrideHwcSlot = impl::HwcBufferCache::FLATTENER_CACHING_SLOT;
     static constexpr bool kLayerGenericMetadata1Mandatory = true;
     static constexpr bool kLayerGenericMetadata2Mandatory = true;
+    static constexpr float kWhitePointNits = 200.f;
+    static constexpr float kDisplayBrightnessNits = 400.f;
 
     static const half4 kColor;
     static const Rect kDisplayFrame;
@@ -758,6 +776,7 @@
         outputLayerState.bufferTransform = static_cast<Hwc2::Transform>(kBufferTransform);
         outputLayerState.outputSpaceVisibleRegion = kOutputSpaceVisibleRegion;
         outputLayerState.dataspace = kDataspace;
+        outputLayerState.whitePointNits = kWhitePointNits;
 
         mLayerFEState.blendMode = kBlendMode;
         mLayerFEState.alpha = kAlpha;
@@ -770,6 +789,8 @@
         mLayerFEState.bufferSlot = BufferQueue::INVALID_BUFFER_SLOT;
         mLayerFEState.acquireFence = kFence;
 
+        mOutputState.displayBrightnessNits = kDisplayBrightnessNits;
+
         EXPECT_CALL(mOutput, getDisplayColorProfile())
                 .WillRepeatedly(Return(&mDisplayColorProfile));
         EXPECT_CALL(mDisplayColorProfile, getSupportedPerFrameMetadata())
@@ -818,9 +839,11 @@
     void expectPerFrameCommonCalls(SimulateUnsupported unsupported = SimulateUnsupported::None,
                                    ui::Dataspace dataspace = kDataspace,
                                    const Region& visibleRegion = kOutputSpaceVisibleRegion,
-                                   const Region& surfaceDamage = kSurfaceDamage) {
+                                   const Region& surfaceDamage = kSurfaceDamage,
+                                   float whitePointNits = kWhitePointNits) {
         EXPECT_CALL(*mHwcLayer, setVisibleRegion(RegionEq(visibleRegion))).WillOnce(Return(kError));
         EXPECT_CALL(*mHwcLayer, setDataspace(dataspace)).WillOnce(Return(kError));
+        EXPECT_CALL(*mHwcLayer, setWhitePointNits(whitePointNits)).WillOnce(Return(kError));
         EXPECT_CALL(*mHwcLayer, setColorTransform(kColorTransform))
                 .WillOnce(Return(unsupported == SimulateUnsupported::ColorTransform
                                          ? hal::Error::UNSUPPORTED
@@ -1084,7 +1107,7 @@
     expectGeometryCommonCalls(kOverrideDisplayFrame, kOverrideSourceCrop, kOverrideBufferTransform,
                               kOverrideBlendMode, kSkipAlpha);
     expectPerFrameCommonCalls(SimulateUnsupported::None, kOverrideDataspace, kOverrideVisibleRegion,
-                              kOverrideSurfaceDamage);
+                              kOverrideSurfaceDamage, kDisplayBrightnessNits);
     expectSetHdrMetadataAndBufferCalls();
     expectSetCompositionTypeCall(Hwc2::IComposerClient::Composition::DEVICE);
     EXPECT_CALL(*mLayerFE, hasRoundedCorners()).WillRepeatedly(Return(false));
@@ -1100,7 +1123,7 @@
     expectGeometryCommonCalls(kOverrideDisplayFrame, kOverrideSourceCrop, kOverrideBufferTransform,
                               kOverrideBlendMode, kSkipAlpha);
     expectPerFrameCommonCalls(SimulateUnsupported::None, kOverrideDataspace, kOverrideVisibleRegion,
-                              kOverrideSurfaceDamage);
+                              kOverrideSurfaceDamage, kDisplayBrightnessNits);
     expectSetHdrMetadataAndBufferCalls();
     expectSetCompositionTypeCall(Hwc2::IComposerClient::Composition::DEVICE);
     EXPECT_CALL(*mLayerFE, hasRoundedCorners()).WillRepeatedly(Return(false));
@@ -1116,7 +1139,7 @@
     expectGeometryCommonCalls(kOverrideDisplayFrame, kOverrideSourceCrop, kOverrideBufferTransform,
                               kOverrideBlendMode, kOverrideAlpha);
     expectPerFrameCommonCalls(SimulateUnsupported::None, kOverrideDataspace, kOverrideVisibleRegion,
-                              kOverrideSurfaceDamage);
+                              kOverrideSurfaceDamage, kDisplayBrightnessNits);
     expectSetHdrMetadataAndBufferCalls(kOverrideHwcSlot, kOverrideBuffer, kOverrideFence);
     expectSetCompositionTypeCall(Hwc2::IComposerClient::Composition::DEVICE);
     EXPECT_CALL(*mLayerFE, hasRoundedCorners()).WillRepeatedly(Return(false));
@@ -1132,7 +1155,7 @@
     expectGeometryCommonCalls(kOverrideDisplayFrame, kOverrideSourceCrop, kOverrideBufferTransform,
                               kOverrideBlendMode, kOverrideAlpha);
     expectPerFrameCommonCalls(SimulateUnsupported::None, kOverrideDataspace, kOverrideVisibleRegion,
-                              kOverrideSurfaceDamage);
+                              kOverrideSurfaceDamage, kDisplayBrightnessNits);
     expectSetHdrMetadataAndBufferCalls(kOverrideHwcSlot, kOverrideBuffer, kOverrideFence);
     expectSetCompositionTypeCall(Hwc2::IComposerClient::Composition::DEVICE);
     EXPECT_CALL(*mLayerFE, hasRoundedCorners()).WillRepeatedly(Return(false));
diff --git a/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp b/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
index cf63ef5..6d96260 100644
--- a/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/OutputTest.cpp
@@ -3023,6 +3023,7 @@
         mOutput.mState.usesDeviceComposition = false;
         mOutput.mState.reusedClientComposition = false;
         mOutput.mState.flipClientTarget = false;
+        mOutput.mState.clientTargetWhitePointNits = kClientTargetLuminanceNits;
 
         EXPECT_CALL(mOutput, getCompositionEngine()).WillRepeatedly(ReturnRef(mCompositionEngine));
         EXPECT_CALL(mCompositionEngine, getRenderEngine()).WillRepeatedly(ReturnRef(mRenderEngine));
@@ -3057,6 +3058,7 @@
     static constexpr float kDefaultMaxLuminance = 0.9f;
     static constexpr float kDefaultAvgLuminance = 0.7f;
     static constexpr float kDefaultMinLuminance = 0.1f;
+    static constexpr float kClientTargetLuminanceNits = 200.f;
 
     static const Rect kDefaultOutputFrame;
     static const Rect kDefaultOutputViewport;
@@ -3424,7 +3426,8 @@
             .andIfSkipColorTransform(false)
             .thenExpectDisplaySettingsUsed({kDefaultOutputDestinationClip, kDefaultOutputViewport,
                                             kDefaultMaxLuminance, kDefaultOutputDataspace, mat4(),
-                                            kDefaultOutputOrientationFlags})
+                                            kDefaultOutputOrientationFlags,
+                                            kClientTargetLuminanceNits})
             .execute()
             .expectAFenceWasReturned();
 }
@@ -3435,7 +3438,8 @@
             .andIfSkipColorTransform(false)
             .thenExpectDisplaySettingsUsed({kDefaultOutputDestinationClip, kDefaultOutputViewport,
                                             kDefaultMaxLuminance, kDefaultOutputDataspace, mat4(),
-                                            kDefaultOutputOrientationFlags})
+                                            kDefaultOutputOrientationFlags,
+                                            kClientTargetLuminanceNits})
             .execute()
             .expectAFenceWasReturned();
 }
@@ -3444,10 +3448,10 @@
     verify().ifMixedCompositionIs(false)
             .andIfUsesHdr(true)
             .andIfSkipColorTransform(false)
-            .thenExpectDisplaySettingsUsed({kDefaultOutputDestinationClip, kDefaultOutputViewport,
-                                            kDefaultMaxLuminance, kDefaultOutputDataspace,
-                                            kDefaultColorTransformMat,
-                                            kDefaultOutputOrientationFlags})
+            .thenExpectDisplaySettingsUsed(
+                    {kDefaultOutputDestinationClip, kDefaultOutputViewport, kDefaultMaxLuminance,
+                     kDefaultOutputDataspace, kDefaultColorTransformMat,
+                     kDefaultOutputOrientationFlags, kClientTargetLuminanceNits})
             .execute()
             .expectAFenceWasReturned();
 }
@@ -3456,10 +3460,10 @@
     verify().ifMixedCompositionIs(false)
             .andIfUsesHdr(false)
             .andIfSkipColorTransform(false)
-            .thenExpectDisplaySettingsUsed({kDefaultOutputDestinationClip, kDefaultOutputViewport,
-                                            kDefaultMaxLuminance, kDefaultOutputDataspace,
-                                            kDefaultColorTransformMat,
-                                            kDefaultOutputOrientationFlags})
+            .thenExpectDisplaySettingsUsed(
+                    {kDefaultOutputDestinationClip, kDefaultOutputViewport, kDefaultMaxLuminance,
+                     kDefaultOutputDataspace, kDefaultColorTransformMat,
+                     kDefaultOutputOrientationFlags, kClientTargetLuminanceNits})
             .execute()
             .expectAFenceWasReturned();
 }
@@ -3471,7 +3475,8 @@
             .andIfSkipColorTransform(true)
             .thenExpectDisplaySettingsUsed({kDefaultOutputDestinationClip, kDefaultOutputViewport,
                                             kDefaultMaxLuminance, kDefaultOutputDataspace, mat4(),
-                                            kDefaultOutputOrientationFlags})
+                                            kDefaultOutputOrientationFlags,
+                                            kClientTargetLuminanceNits})
             .execute()
             .expectAFenceWasReturned();
 }
@@ -3729,6 +3734,8 @@
         mOutput.setRenderSurfaceForTest(std::unique_ptr<RenderSurface>(mRenderSurface));
     }
 
+    static constexpr float kLayerWhitePointNits = 200.f;
+
     mock::DisplayColorProfile* mDisplayColorProfile = new StrictMock<mock::DisplayColorProfile>();
     mock::RenderSurface* mRenderSurface = new StrictMock<mock::RenderSurface>();
     StrictMock<OutputPartialMock> mOutput;
@@ -3768,6 +3775,7 @@
 
     static constexpr ui::Rotation kDisplayOrientation = ui::ROTATION_0;
     static constexpr ui::Dataspace kDisplayDataspace = ui::Dataspace::UNKNOWN;
+    static constexpr float kLayerWhitePointNits = 200.f;
 
     static const Rect kDisplayFrame;
     static const Rect kDisplayViewport;
@@ -3930,14 +3938,15 @@
 
     compositionengine::LayerFE::ClientCompositionTargetSettings layer1TargetSettings{
             Region(kDisplayFrame),
-            false,      /* needs filtering */
-            false,      /* secure */
-            false,      /* supports protected content */
+            false, /* needs filtering */
+            false, /* secure */
+            false, /* supports protected content */
             kDisplayViewport,
             kDisplayDataspace,
             false /* realContentIsVisible */,
             true /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
     compositionengine::LayerFE::ClientCompositionTargetSettings layer2TargetSettings{
             Region(kDisplayFrame),
@@ -3949,6 +3958,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
 
     LayerFE::LayerSettings mBlackoutSettings = mLayers[1].mLayerSettings;
@@ -3988,6 +3998,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
     compositionengine::LayerFE::ClientCompositionTargetSettings layer1TargetSettings{
             Region(Rect(0, 0, 30, 30)),
@@ -3999,6 +4010,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
     compositionengine::LayerFE::ClientCompositionTargetSettings layer2TargetSettings{
             Region(Rect(0, 0, 40, 201)),
@@ -4010,6 +4022,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
 
     EXPECT_CALL(*mLayers[0].mLayerFE, prepareClientCompositionList(Eq(ByRef(layer0TargetSettings))))
@@ -4039,6 +4052,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
     compositionengine::LayerFE::ClientCompositionTargetSettings layer1TargetSettings{
             Region(kDisplayFrame),
@@ -4050,6 +4064,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
     compositionengine::LayerFE::ClientCompositionTargetSettings layer2TargetSettings{
             Region(kDisplayFrame),
@@ -4061,6 +4076,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
 
     EXPECT_CALL(*mLayers[0].mLayerFE, prepareClientCompositionList(Eq(ByRef(layer0TargetSettings))))
@@ -4090,7 +4106,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
-
+            kLayerWhitePointNits,
     };
     compositionengine::LayerFE::ClientCompositionTargetSettings layer1TargetSettings{
             Region(kDisplayFrame),
@@ -4102,6 +4118,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
     compositionengine::LayerFE::ClientCompositionTargetSettings layer2TargetSettings{
             Region(kDisplayFrame),
@@ -4113,6 +4130,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
 
     EXPECT_CALL(*mLayers[0].mLayerFE, prepareClientCompositionList(Eq(ByRef(layer0TargetSettings))))
@@ -4141,6 +4159,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
     compositionengine::LayerFE::ClientCompositionTargetSettings layer1TargetSettings{
             Region(kDisplayFrame),
@@ -4152,6 +4171,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
     compositionengine::LayerFE::ClientCompositionTargetSettings layer2TargetSettings{
             Region(kDisplayFrame),
@@ -4163,6 +4183,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
 
     EXPECT_CALL(*mLayers[0].mLayerFE, prepareClientCompositionList(Eq(ByRef(layer0TargetSettings))))
@@ -4179,7 +4200,6 @@
 
 TEST_F(GenerateClientCompositionRequestsTest_ThreeLayers,
        protectedContentSupportUsedToGenerateRequests) {
-
     compositionengine::LayerFE::ClientCompositionTargetSettings layer0TargetSettings{
             Region(kDisplayFrame),
             false, /* needs filtering */
@@ -4190,6 +4210,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
     compositionengine::LayerFE::ClientCompositionTargetSettings layer1TargetSettings{
             Region(kDisplayFrame),
@@ -4201,6 +4222,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
     compositionengine::LayerFE::ClientCompositionTargetSettings layer2TargetSettings{
             Region(kDisplayFrame),
@@ -4212,6 +4234,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
 
     EXPECT_CALL(*mLayers[0].mLayerFE, prepareClientCompositionList(Eq(ByRef(layer0TargetSettings))))
@@ -4379,6 +4402,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
 
     EXPECT_CALL(leftLayer.mOutputLayer, requiresClientComposition()).WillRepeatedly(Return(true));
@@ -4396,6 +4420,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
 
     EXPECT_CALL(rightLayer.mOutputLayer, requiresClientComposition()).WillRepeatedly(Return(true));
@@ -4428,6 +4453,7 @@
             false /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
 
     LayerFE::LayerSettings mShadowSettings;
@@ -4472,6 +4498,7 @@
             true /* realContentIsVisible */,
             false /* clearContent */,
             compositionengine::LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled,
+            kLayerWhitePointNits,
     };
 
     EXPECT_CALL(mLayers[0].mOutputLayer, requiresClientComposition()).WillOnce(Return(false));
diff --git a/services/surfaceflinger/CompositionEngine/tests/planner/CachedSetTest.cpp b/services/surfaceflinger/CompositionEngine/tests/planner/CachedSetTest.cpp
index 42b3d97..d5a117a 100644
--- a/services/surfaceflinger/CompositionEngine/tests/planner/CachedSetTest.cpp
+++ b/services/surfaceflinger/CompositionEngine/tests/planner/CachedSetTest.cpp
@@ -55,13 +55,21 @@
 }
 
 MATCHER_P(ClientCompositionTargetSettingsSecureEq, expectedSecureSetting, "") {
-    *result_listener << "ClientCompositionTargetSettings' SecureSettings aren't equal \n";
+    *result_listener << "ClientCompositionTargetSettings' isSecure bits aren't equal \n";
     *result_listener << "expected " << expectedSecureSetting << "\n";
     *result_listener << "actual " << arg.isSecure << "\n";
 
     return expectedSecureSetting == arg.isSecure;
 }
 
+MATCHER_P(ClientCompositionTargetSettingsWhitePointEq, expectedWhitePoint, "") {
+    *result_listener << "ClientCompositionTargetSettings' white points aren't equal \n";
+    *result_listener << "expected " << expectedWhitePoint << "\n";
+    *result_listener << "actual " << arg.whitePointNits << "\n";
+
+    return expectedWhitePoint == arg.whitePointNits;
+}
+
 static const ui::Size kOutputSize = ui::Size(1, 1);
 
 class CachedSetTest : public testing::Test {
@@ -431,6 +439,54 @@
     cachedSet.append(CachedSet(layer3));
 }
 
+TEST_F(CachedSetTest, renderWhitePoint) {
+    // Skip the 0th layer to ensure that the bounding box of the layers is offset from (0, 0)
+    CachedSet::Layer& layer1 = *mTestLayers[1]->cachedSetLayer.get();
+    sp<mock::LayerFE> layerFE1 = mTestLayers[1]->layerFE;
+    CachedSet::Layer& layer2 = *mTestLayers[2]->cachedSetLayer.get();
+    sp<mock::LayerFE> layerFE2 = mTestLayers[2]->layerFE;
+
+    CachedSet cachedSet(layer1);
+    cachedSet.append(CachedSet(layer2));
+
+    std::vector<compositionengine::LayerFE::LayerSettings> clientCompList1;
+    clientCompList1.push_back({});
+
+    std::vector<compositionengine::LayerFE::LayerSettings> clientCompList2;
+    clientCompList2.push_back({});
+
+    mOutputState.displayBrightnessNits = 400.f;
+
+    const auto drawLayers =
+            [&](const renderengine::DisplaySettings& displaySettings,
+                const std::vector<renderengine::LayerSettings>&,
+                const std::shared_ptr<renderengine::ExternalTexture>&, const bool,
+                base::unique_fd&&) -> std::future<renderengine::RenderEngineResult> {
+        EXPECT_EQ(mOutputState.displayBrightnessNits, displaySettings.targetLuminanceNits);
+        return futureOf<renderengine::RenderEngineResult>({NO_ERROR, base::unique_fd()});
+    };
+
+    EXPECT_CALL(*layerFE1,
+                prepareClientCompositionList(ClientCompositionTargetSettingsWhitePointEq(
+                        mOutputState.displayBrightnessNits)))
+            .WillOnce(Return(clientCompList1));
+    EXPECT_CALL(*layerFE2,
+                prepareClientCompositionList(ClientCompositionTargetSettingsWhitePointEq(
+                        mOutputState.displayBrightnessNits)))
+            .WillOnce(Return(clientCompList2));
+    EXPECT_CALL(mRenderEngine, drawLayers(_, _, _, _, _)).WillOnce(Invoke(drawLayers));
+    mOutputState.isSecure = true;
+    cachedSet.render(mRenderEngine, mTexturePool, mOutputState);
+    expectReadyBuffer(cachedSet);
+
+    EXPECT_EQ(mOutputState.framebufferSpace, cachedSet.getOutputSpace());
+    EXPECT_EQ(Rect(kOutputSize.width, kOutputSize.height), cachedSet.getTextureBounds());
+
+    // Now check that appending a new cached set properly cleans up RenderEngine resources.
+    CachedSet::Layer& layer3 = *mTestLayers[2]->cachedSetLayer.get();
+    cachedSet.append(CachedSet(layer3));
+}
+
 TEST_F(CachedSetTest, rendersWithOffsetFramebufferContent) {
     // Skip the 0th layer to ensure that the bounding box of the layers is offset from (0, 0)
     CachedSet::Layer& layer1 = *mTestLayers[1]->cachedSetLayer.get();
diff --git a/services/surfaceflinger/DisplayHardware/AidlComposerHal.cpp b/services/surfaceflinger/DisplayHardware/AidlComposerHal.cpp
index 200bb65..29e5a74 100644
--- a/services/surfaceflinger/DisplayHardware/AidlComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/AidlComposerHal.cpp
@@ -1005,12 +1005,19 @@
 }
 
 Error AidlComposer::getClientTargetProperty(
-        Display display, IComposerClient::ClientTargetProperty* outClientTargetProperty) {
+        Display display, IComposerClient::ClientTargetProperty* outClientTargetProperty,
+        float* whitePointNits) {
     ClientTargetProperty property;
-    mReader.takeClientTargetProperty(translate<int64_t>(display), &property);
+    mReader.takeClientTargetProperty(translate<int64_t>(display), &property, whitePointNits);
     *outClientTargetProperty = translate<IComposerClient::ClientTargetProperty>(property);
     return Error::NONE;
 }
 
+Error AidlComposer::setLayerWhitePointNits(Display display, Layer layer, float whitePointNits) {
+    mWriter.setLayerWhitePointNits(translate<int64_t>(display), translate<int64_t>(layer),
+                                   whitePointNits);
+    return Error::NONE;
+}
+
 } // namespace Hwc2
 } // namespace android
diff --git a/services/surfaceflinger/DisplayHardware/AidlComposerHal.h b/services/surfaceflinger/DisplayHardware/AidlComposerHal.h
index 418a8cc..8cae25f 100644
--- a/services/surfaceflinger/DisplayHardware/AidlComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/AidlComposerHal.h
@@ -194,9 +194,10 @@
                                         bool mandatory, const std::vector<uint8_t>& value) override;
     V2_4::Error getLayerGenericMetadataKeys(
             std::vector<IComposerClient::LayerGenericMetadataKey>* outKeys) override;
-    Error getClientTargetProperty(
-            Display display,
-            IComposerClient::ClientTargetProperty* outClientTargetProperty) override;
+    Error getClientTargetProperty(Display display,
+                                  IComposerClient::ClientTargetProperty* outClientTargetProperty,
+                                  float* outClientTargetWhitePointNits) override;
+    Error setLayerWhitePointNits(Display display, Layer layer, float whitePointNits) override;
 
 private:
     // Many public functions above simply write a command into the command
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.h b/services/surfaceflinger/DisplayHardware/ComposerHal.h
index 3bbce7b..3cc5e5e 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.h
@@ -221,7 +221,11 @@
     virtual V2_4::Error getLayerGenericMetadataKeys(
             std::vector<IComposerClient::LayerGenericMetadataKey>* outKeys) = 0;
     virtual Error getClientTargetProperty(
-            Display display, IComposerClient::ClientTargetProperty* outClientTargetProperty) = 0;
+            Display display, IComposerClient::ClientTargetProperty* outClientTargetProperty,
+            float* outWhitePointNits) = 0;
+
+    // AIDL Composer
+    virtual Error setLayerWhitePointNits(Display display, Layer layer, float whitePointNits) = 0;
 };
 
 } // namespace android::Hwc2
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.cpp b/services/surfaceflinger/DisplayHardware/HWC2.cpp
index e21b0da..596666c 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWC2.cpp
@@ -555,8 +555,10 @@
     return static_cast<Error>(intError);
 }
 
-Error Display::getClientTargetProperty(ClientTargetProperty* outClientTargetProperty) {
-    const auto error = mComposer.getClientTargetProperty(mId, outClientTargetProperty);
+Error Display::getClientTargetProperty(ClientTargetProperty* outClientTargetProperty,
+                                       float* outWhitePointNits) {
+    const auto error =
+            mComposer.getClientTargetProperty(mId, outClientTargetProperty, outWhitePointNits);
     return static_cast<Error>(error);
 }
 
@@ -919,6 +921,16 @@
     return static_cast<Error>(intError);
 }
 
+// AIDL HAL
+Error Layer::setWhitePointNits(float whitePointNits) {
+    if (CC_UNLIKELY(!mDisplay)) {
+        return Error::BAD_DISPLAY;
+    }
+
+    auto intError = mComposer.setLayerWhitePointNits(mDisplay->getId(), mId, whitePointNits);
+    return static_cast<Error>(intError);
+}
+
 } // namespace impl
 } // namespace HWC2
 } // namespace android
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.h b/services/surfaceflinger/DisplayHardware/HWC2.h
index a65efb2..5e0ba06 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.h
+++ b/services/surfaceflinger/DisplayHardware/HWC2.h
@@ -146,7 +146,7 @@
             std::vector<hal::ContentType>*) const = 0;
     [[clang::warn_unused_result]] virtual hal::Error setContentType(hal::ContentType) = 0;
     [[clang::warn_unused_result]] virtual hal::Error getClientTargetProperty(
-            hal::ClientTargetProperty* outClientTargetProperty) = 0;
+            hal::ClientTargetProperty* outClientTargetProperty, float* outWhitePointNits) = 0;
 };
 
 namespace impl {
@@ -209,7 +209,8 @@
     hal::Error getSupportedContentTypes(
             std::vector<hal::ContentType>* outSupportedContentTypes) const override;
     hal::Error setContentType(hal::ContentType) override;
-    hal::Error getClientTargetProperty(hal::ClientTargetProperty* outClientTargetProperty) override;
+    hal::Error getClientTargetProperty(hal::ClientTargetProperty* outClientTargetProperty,
+                                       float* outWhitePointNits) override;
 
     // Other Display methods
     hal::HWDisplayId getId() const override { return mId; }
@@ -288,6 +289,9 @@
     // Composer HAL 2.4
     [[clang::warn_unused_result]] virtual hal::Error setLayerGenericMetadata(
             const std::string& name, bool mandatory, const std::vector<uint8_t>& value) = 0;
+
+    // AIDL HAL
+    [[clang::warn_unused_result]] virtual hal::Error setWhitePointNits(float whitePointNits) = 0;
 };
 
 namespace impl {
@@ -331,6 +335,9 @@
     hal::Error setLayerGenericMetadata(const std::string& name, bool mandatory,
                                        const std::vector<uint8_t>& value) override;
 
+    // AIDL HAL
+    hal::Error setWhitePointNits(float whitePointNits) override;
+
 private:
     // These are references to data owned by HWC2::Device, which will outlive
     // this HWC2::Layer, so these references are guaranteed to be valid for
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 06f5df5..d851e22 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -522,11 +522,13 @@
     RETURN_IF_HWC_ERROR_FOR("getRequests", error, displayId, BAD_INDEX);
 
     DeviceRequestedChanges::ClientTargetProperty clientTargetProperty;
-    error = hwcDisplay->getClientTargetProperty(&clientTargetProperty);
+    float clientTargetWhitePointNits;
+    error = hwcDisplay->getClientTargetProperty(&clientTargetProperty, &clientTargetWhitePointNits);
 
     outChanges->emplace(DeviceRequestedChanges{std::move(changedTypes), std::move(displayRequests),
                                                std::move(layerRequests),
-                                               std::move(clientTargetProperty)});
+                                               std::move(clientTargetProperty),
+                                               clientTargetWhitePointNits});
     error = hwcDisplay->acceptChanges();
     RETURN_IF_HWC_ERROR_FOR("acceptChanges", error, displayId, BAD_INDEX);
 
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index 0a090da..bd79977 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -79,6 +79,7 @@
         DisplayRequests displayRequests;
         LayerRequests layerRequests;
         ClientTargetProperty clientTargetProperty;
+        float clientTargetWhitePointNits;
     };
 
     struct HWCDisplayMode {
diff --git a/services/surfaceflinger/DisplayHardware/HidlComposerHal.cpp b/services/surfaceflinger/DisplayHardware/HidlComposerHal.cpp
index 6c40598..11d41c0 100644
--- a/services/surfaceflinger/DisplayHardware/HidlComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/HidlComposerHal.cpp
@@ -1164,8 +1164,14 @@
 }
 
 Error HidlComposer::getClientTargetProperty(
-        Display display, IComposerClient::ClientTargetProperty* outClientTargetProperty) {
+        Display display, IComposerClient::ClientTargetProperty* outClientTargetProperty,
+        float* outWhitePointNits) {
     mReader.takeClientTargetProperty(display, outClientTargetProperty);
+    *outWhitePointNits = -1.f;
+    return Error::NONE;
+}
+
+Error HidlComposer::setLayerWhitePointNits(Display, Layer, float) {
     return Error::NONE;
 }
 
diff --git a/services/surfaceflinger/DisplayHardware/HidlComposerHal.h b/services/surfaceflinger/DisplayHardware/HidlComposerHal.h
index ad253a2..18c0635 100644
--- a/services/surfaceflinger/DisplayHardware/HidlComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/HidlComposerHal.h
@@ -304,9 +304,10 @@
                                         bool mandatory, const std::vector<uint8_t>& value) override;
     V2_4::Error getLayerGenericMetadataKeys(
             std::vector<IComposerClient::LayerGenericMetadataKey>* outKeys) override;
-    Error getClientTargetProperty(
-            Display display,
-            IComposerClient::ClientTargetProperty* outClientTargetProperty) override;
+    Error getClientTargetProperty(Display display,
+                                  IComposerClient::ClientTargetProperty* outClientTargetProperty,
+                                  float* outWhitePointNits) override;
+    Error setLayerWhitePointNits(Display display, Layer layer, float whitePointNits) override;
 
 private:
     class CommandWriter : public CommandWriterBase {
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 4606746..b395159 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -46,6 +46,7 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <sys/types.h>
+#include <ui/DataspaceUtils.h>
 #include <ui/DebugUtils.h>
 #include <ui/GraphicBuffer.h>
 #include <ui/PixelFormat.h>
@@ -585,6 +586,8 @@
 
     layerSettings.alpha = alpha;
     layerSettings.sourceDataspace = getDataSpace();
+
+    layerSettings.whitePointNits = targetSettings.whitePointNits;
     switch (targetSettings.blurSetting) {
         case LayerFE::ClientCompositionTargetSettings::BlurSetting::Enabled:
             layerSettings.backgroundBlurRadius = getBackgroundBlurRadius();
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index b7327b2..885d698 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -67,6 +67,7 @@
 #include <renderengine/RenderEngine.h>
 #include <sys/types.h>
 #include <ui/ColorSpace.h>
+#include <ui/DataspaceUtils.h>
 #include <ui/DebugUtils.h>
 #include <ui/DisplayId.h>
 #include <ui/DisplayMode.h>
@@ -2316,12 +2317,7 @@
             mDrawingState.traverse([&, compositionDisplay = compositionDisplay](Layer* layer) {
                 const auto layerFe = layer->getCompositionEngineLayerFE();
                 if (layer->isVisible() && compositionDisplay->includesLayer(layerFe)) {
-                    const Dataspace transfer =
-                        static_cast<Dataspace>(layer->getDataSpace() & Dataspace::TRANSFER_MASK);
-                    const bool isHdr = (transfer == Dataspace::TRANSFER_ST2084 ||
-                                        transfer == Dataspace::TRANSFER_HLG);
-
-                    if (isHdr) {
+                    if (isHdrDataspace(layer->getDataSpace())) {
                         const auto* outputLayer =
                             compositionDisplay->getOutputLayerForLayer(layerFe);
                         if (outputLayer) {
@@ -6425,6 +6421,8 @@
                                        BlurSetting::Disabled
                              : compositionengine::LayerFE::ClientCompositionTargetSettings::
                                        BlurSetting::Enabled,
+                DisplayDevice::sDefaultMaxLumiance,
+
         };
         std::vector<compositionengine::LayerFE::LayerSettings> results =
                 layer->prepareClientCompositionList(targetSettings);
diff --git a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h
index 1ba3c0f..1debd65 100644
--- a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h
+++ b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h
@@ -136,7 +136,9 @@
                              const std::vector<uint8_t>&));
     MOCK_METHOD1(getLayerGenericMetadataKeys,
                  V2_4::Error(std::vector<IComposerClient::LayerGenericMetadataKey>*));
-    MOCK_METHOD2(getClientTargetProperty, Error(Display, IComposerClient::ClientTargetProperty*));
+    MOCK_METHOD3(getClientTargetProperty,
+                 Error(Display, IComposerClient::ClientTargetProperty*, float*));
+    MOCK_METHOD3(setLayerWhitePointNits, Error(Display, Layer, float));
 };
 
 } // namespace Hwc2::mock
diff --git a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockHWC2.h b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockHWC2.h
index fe1544e..83a0996 100644
--- a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockHWC2.h
+++ b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockHWC2.h
@@ -85,7 +85,8 @@
     MOCK_METHOD(hal::Error, getSupportedContentTypes, (std::vector<hal::ContentType> *),
                 (const, override));
     MOCK_METHOD(hal::Error, setContentType, (hal::ContentType), (override));
-    MOCK_METHOD(hal::Error, getClientTargetProperty, (hal::ClientTargetProperty *), (override));
+    MOCK_METHOD(hal::Error, getClientTargetProperty, (hal::ClientTargetProperty *, float *),
+                (override));
 };
 
 class Layer : public HWC2::Layer {
@@ -116,6 +117,7 @@
     MOCK_METHOD(hal::Error, setColorTransform, (const android::mat4 &), (override));
     MOCK_METHOD(hal::Error, setLayerGenericMetadata,
                 (const std::string &, bool, const std::vector<uint8_t> &), (override));
+    MOCK_METHOD(hal::Error, setWhitePointNits, (float whitePointNits), (override));
 };
 
 } // namespace android::HWC2::mock