diff --git a/libs/hwui/Tonemapper.cpp b/libs/hwui/Tonemapper.cpp
index 974a5d0..ae29edf 100644
--- a/libs/hwui/Tonemapper.cpp
+++ b/libs/hwui/Tonemapper.cpp
@@ -20,6 +20,7 @@
 #include <log/log.h>
 // libshaders only exists on Android devices
 #ifdef __ANDROID__
+#include <renderthread/CanvasContext.h>
 #include <shaders/shaders.h>
 #endif
 
@@ -53,8 +54,17 @@
 
     ColorFilterRuntimeEffectBuilder effectBuilder(std::move(runtimeEffect));
 
+    auto colorTransform = android::mat4();
+    const auto* context = renderthread::CanvasContext::getActiveContext();
+    if (context) {
+        const auto ratio = context->targetSdrHdrRatio();
+        if (ratio > 1.0f) {
+            colorTransform = android::mat4::scale(vec4(ratio, ratio, ratio, 1.f));
+        }
+    }
+
     const auto uniforms =
-            shaders::buildLinearEffectUniforms(linearEffect, android::mat4(), maxDisplayLuminance,
+            shaders::buildLinearEffectUniforms(linearEffect, colorTransform, maxDisplayLuminance,
                                                currentDisplayLuminanceNits, maxLuminance);
 
     for (const auto& uniform : uniforms) {
diff --git a/tests/HwAccelerationTest/src/com/android/test/hwui/ColorBitmapActivity.java b/tests/HwAccelerationTest/src/com/android/test/hwui/ColorBitmapActivity.java
index e2d17cd..1f4c6c5 100644
--- a/tests/HwAccelerationTest/src/com/android/test/hwui/ColorBitmapActivity.java
+++ b/tests/HwAccelerationTest/src/com/android/test/hwui/ColorBitmapActivity.java
@@ -17,6 +17,7 @@
 package com.android.test.hwui;
 
 import android.app.Activity;
+import android.content.pm.ActivityInfo;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.ColorSpace;
@@ -72,6 +73,10 @@
     private int[] mGradientEndColors = {0xFFFFFFFF, 0xFFFF0000, 0xFF00FF00, 0xFF0000FF};
     private String[] mGradientColorNames = {"Grayscale", "Red", "Green", "Blue"};
 
+    private int mColorMode = ActivityInfo.COLOR_MODE_DEFAULT;
+    private int[] mColorModes = {ActivityInfo.COLOR_MODE_DEFAULT, ActivityInfo.COLOR_MODE_HDR};
+    private String[] mColorModeNames = {"DEFAULT", "HDR"};
+
     private final ExecutorService mBufferFenceExecutor = Executors.newFixedThreadPool(1);
     private final ExecutorService mBufferExecutor = Executors.newFixedThreadPool(1);
 
@@ -139,6 +144,15 @@
             gradientColorSpinner
                     .setOnItemSelectedListener(new GradientColorOnItemSelectedListener());
 
+            ArrayAdapter<String> colorModeAdapter = new ArrayAdapter<>(
+                    this, android.R.layout.simple_spinner_item, mColorModeNames);
+
+            colorModeAdapter
+                    .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+            Spinner colorModeSpinner = new Spinner(this);
+            colorModeSpinner.setAdapter(colorModeAdapter);
+            colorModeSpinner.setOnItemSelectedListener(new ColorModeOnItemSelectedListener());
+
             mGradientBuffer = getGradientBuffer().get();
 
             LinearLayout linearLayout = new LinearLayout(this);
@@ -169,6 +183,10 @@
                     LinearLayout.LayoutParams.WRAP_CONTENT,
                     LinearLayout.LayoutParams.WRAP_CONTENT));
 
+            spinnerLayout.addView(colorModeSpinner, new LinearLayout.LayoutParams(
+                    LinearLayout.LayoutParams.WRAP_CONTENT,
+                    LinearLayout.LayoutParams.WRAP_CONTENT));
+
             linearLayout.addView(spinnerLayout, new LinearLayout.LayoutParams(
                     LinearLayout.LayoutParams.WRAP_CONTENT,
                     LinearLayout.LayoutParams.WRAP_CONTENT));
@@ -187,6 +205,8 @@
             linearLayout.addView(mSurfaceView, new LinearLayout.LayoutParams(WIDTH, HEIGHT));
 
             setContentView(linearLayout);
+
+            getWindow().setColorMode(mColorMode);
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
@@ -312,4 +332,22 @@
 
         }
     }
+
+    private final class ColorModeOnItemSelectedListener
+            implements AdapterView.OnItemSelectedListener {
+
+        @Override
+        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+            ColorBitmapActivity.this.mColorMode = ColorBitmapActivity.this.mColorModes[position];
+            ColorBitmapActivity.this.getMainExecutor()
+                    .execute(() -> {
+                        ColorBitmapActivity.this.getWindow().setColorMode(mColorMode);
+                    });
+        }
+
+        @Override
+        public void onNothingSelected(AdapterView<?> parent) {
+
+        }
+    }
 }