diff --git a/graphics/composer/2.2/utils/vts/ReadbackVts.cpp b/graphics/composer/2.2/utils/vts/ReadbackVts.cpp
index b179f35..19f5e8c 100644
--- a/graphics/composer/2.2/utils/vts/ReadbackVts.cpp
+++ b/graphics/composer/2.2/utils/vts/ReadbackVts.cpp
@@ -15,6 +15,8 @@
  */
 
 #include <composer-vts/2.2/ReadbackVts.h>
+#include <composer-vts/2.2/RenderEngineVts.h>
+#include "renderengine/ExternalTexture.h"
 
 namespace android {
 namespace hardware {
@@ -257,10 +259,11 @@
 }
 
 TestBufferLayer::TestBufferLayer(const std::shared_ptr<ComposerClient>& client,
-                                 const std::shared_ptr<Gralloc>& gralloc, Display display,
-                                 int32_t width, int32_t height, PixelFormat format,
+                                 const std::shared_ptr<Gralloc>& gralloc,
+                                 TestRenderEngine& renderEngine, Display display, int32_t width,
+                                 int32_t height, PixelFormat format,
                                  IComposerClient::Composition composition)
-    : TestLayer{client, display} {
+    : TestLayer{client, display}, mRenderEngine(renderEngine) {
     mGralloc = gralloc;
     mComposition = composition;
     mWidth = width;
@@ -293,9 +296,11 @@
 
 LayerSettings TestBufferLayer::toRenderEngineLayerSettings() {
     LayerSettings layerSettings = TestLayer::toRenderEngineLayerSettings();
-    layerSettings.source.buffer.buffer =
+    layerSettings.source.buffer.buffer = std::make_shared<renderengine::ExternalTexture>(
             new GraphicBuffer(mBufferHandle, GraphicBuffer::CLONE_HANDLE, mWidth, mHeight,
-                              static_cast<int32_t>(mFormat), 1, mUsage, mStride);
+                              static_cast<int32_t>(mFormat), 1, mUsage, mStride),
+            mRenderEngine.getInternalRenderEngine(),
+            renderengine::ExternalTexture::Usage::READABLE);
 
     layerSettings.source.buffer.usePremultipliedAlpha =
             mBlendMode == IComposerClient::BlendMode::PREMULTIPLIED;
diff --git a/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp b/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp
index 3becace..f78dda2 100644
--- a/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp
+++ b/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp
@@ -69,7 +69,9 @@
                    [](renderengine::LayerSettings& settings) -> renderengine::LayerSettings* {
                        return &settings;
                    });
-    mRenderEngine->drawLayers(mDisplaySettings, compositionLayerPointers, mGraphicBuffer, true,
+    auto texture = std::make_shared<renderengine::ExternalTexture>(
+            mGraphicBuffer, *mRenderEngine, renderengine::ExternalTexture::Usage::WRITEABLE);
+    mRenderEngine->drawLayers(mDisplaySettings, compositionLayerPointers, texture, true,
                               std::move(bufferFence), &readyFence);
     int fd = readyFence.release();
     if (fd != -1) {
diff --git a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ReadbackVts.h b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ReadbackVts.h
index d5eedf1..b24e3b6 100644
--- a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ReadbackVts.h
+++ b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ReadbackVts.h
@@ -50,6 +50,8 @@
 static const IComposerClient::Color GREEN = {0, 0xff, 0, 0xff};
 static const IComposerClient::Color BLUE = {0, 0, 0xff, 0xff};
 
+class TestRenderEngine;
+
 class TestLayer {
   public:
     TestLayer(const std::shared_ptr<ComposerClient>& client, Display display)
@@ -110,7 +112,8 @@
   public:
     TestBufferLayer(
             const std::shared_ptr<ComposerClient>& client, const std::shared_ptr<Gralloc>& gralloc,
-            Display display, int32_t width, int32_t height, PixelFormat format,
+            TestRenderEngine& renderEngine, Display display, int32_t width, int32_t height,
+            PixelFormat format,
             IComposerClient::Composition composition = IComposerClient::Composition::DEVICE);
 
     ~TestBufferLayer();
@@ -138,6 +141,7 @@
   protected:
     IComposerClient::Composition mComposition;
     std::shared_ptr<Gralloc> mGralloc;
+    TestRenderEngine& mRenderEngine;
     int32_t mFillFence;
     const native_handle_t* mBufferHandle = nullptr;
 };
diff --git a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/RenderEngineVts.h b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/RenderEngineVts.h
index f2d5f19..26027d3 100644
--- a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/RenderEngineVts.h
+++ b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/RenderEngineVts.h
@@ -14,9 +14,12 @@
  * limitations under the License.
  */
 
+#pragma once
+
 #include <composer-vts/2.2/ReadbackVts.h>
 #include <math/half.h>
 #include <math/vec3.h>
+#include <renderengine/ExternalTexture.h>
 #include <renderengine/RenderEngine.h>
 #include <ui/GraphicBuffer.h>
 #include <ui/GraphicBufferAllocator.h>
@@ -51,12 +54,15 @@
     void drawLayers();
     void checkColorBuffer(std::vector<V2_2::IComposerClient::Color>& expectedColors);
 
+    renderengine::RenderEngine& getInternalRenderEngine() { return *mRenderEngine; }
+
   private:
     common::V1_1::PixelFormat mFormat;
     std::vector<renderengine::LayerSettings> mCompositionLayers;
     std::unique_ptr<renderengine::RenderEngine> mRenderEngine;
     std::vector<renderengine::LayerSettings> mRenderLayers;
     sp<GraphicBuffer> mGraphicBuffer;
+
     DisplaySettings mDisplaySettings;
 };
 
diff --git a/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp b/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp
index 1463c3b..8d52173 100644
--- a/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp
+++ b/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp
@@ -288,9 +288,9 @@
                                        {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight},
                                        BLUE);
 
-        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
-                                                       mDisplayWidth, mDisplayHeight,
-                                                       PixelFormat::RGBA_8888);
+        auto layer = std::make_shared<TestBufferLayer>(
+                mComposerClient, mGralloc, *mTestRenderEngine, mPrimaryDisplay, mDisplayWidth,
+                mDisplayHeight, PixelFormat::RGBA_8888);
         layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
         layer->setZOrder(10);
         layer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
@@ -422,9 +422,9 @@
                                        {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight},
                                        BLUE);
 
-        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
-                                                       mDisplayWidth, mDisplayHeight,
-                                                       PixelFormat::RGBA_FP16);
+        auto layer = std::make_shared<TestBufferLayer>(
+                mComposerClient, mGralloc, *mTestRenderEngine, mPrimaryDisplay, mDisplayWidth,
+                mDisplayHeight, PixelFormat::RGBA_FP16);
         layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
         layer->setZOrder(10);
         layer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
@@ -538,8 +538,8 @@
         ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
 
         auto deviceLayer = std::make_shared<TestBufferLayer>(
-                mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth, mDisplayHeight / 2,
-                PixelFormat::RGBA_8888);
+                mComposerClient, mGralloc, *mTestRenderEngine, mPrimaryDisplay, mDisplayWidth,
+                mDisplayHeight / 2, PixelFormat::RGBA_8888);
         std::vector<IComposerClient::Color> deviceColors(deviceLayer->mWidth *
                                                          deviceLayer->mHeight);
         ReadbackHelper::fillColorsArea(deviceColors, deviceLayer->mWidth,
@@ -575,8 +575,8 @@
         }
 
         auto clientLayer = std::make_shared<TestBufferLayer>(
-                mComposerClient, mGralloc, mPrimaryDisplay, clientWidth, clientHeight,
-                PixelFormat::RGBA_FP16, IComposerClient::Composition::DEVICE);
+                mComposerClient, mGralloc, *mTestRenderEngine, mPrimaryDisplay, clientWidth,
+                clientHeight, PixelFormat::RGBA_FP16, IComposerClient::Composition::DEVICE);
         IComposerClient::Rect clientFrame = {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight};
         clientLayer->setDisplayFrame(clientFrame);
         clientLayer->setZOrder(0);
@@ -657,9 +657,9 @@
         std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
         ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
 
-        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
-                                                       mDisplayWidth, mDisplayHeight,
-                                                       PixelFormat::RGBA_8888);
+        auto layer = std::make_shared<TestBufferLayer>(
+                mComposerClient, mGralloc, *mTestRenderEngine, mPrimaryDisplay, mDisplayWidth,
+                mDisplayHeight, PixelFormat::RGBA_8888);
         layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
         layer->setZOrder(10);
         layer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
@@ -805,9 +805,9 @@
                                        {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight},
                                        BLUE);
 
-        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
-                                                       mDisplayWidth, mDisplayHeight,
-                                                       PixelFormat::RGBA_8888);
+        auto layer = std::make_shared<TestBufferLayer>(
+                mComposerClient, mGralloc, *mTestRenderEngine, mPrimaryDisplay, mDisplayWidth,
+                mDisplayHeight, PixelFormat::RGBA_8888);
         layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
         layer->setZOrder(10);
         layer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
@@ -957,9 +957,9 @@
         backgroundLayer->setZOrder(0);
         backgroundLayer->setColor(mBackgroundColor);
 
-        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
-                                                       mDisplayWidth, mDisplayHeight,
-                                                       PixelFormat::RGBA_8888);
+        auto layer = std::make_shared<TestBufferLayer>(
+                mComposerClient, mGralloc, *mTestRenderEngine, mPrimaryDisplay, mDisplayWidth,
+                mDisplayHeight, PixelFormat::RGBA_8888);
         layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
         layer->setZOrder(10);
         layer->setDataspace(Dataspace::UNKNOWN, mWriter);
@@ -1195,9 +1195,9 @@
         IComposerClient::Rect blueRect = {mSideLength / 2, mSideLength / 2, mSideLength,
                                           mSideLength};
 
-        mLayer =
-            std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
-                                              mSideLength, mSideLength, PixelFormat::RGBA_8888);
+        mLayer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, *mTestRenderEngine,
+                                                   mPrimaryDisplay, mSideLength, mSideLength,
+                                                   PixelFormat::RGBA_8888);
         mLayer->setDisplayFrame({0, 0, mSideLength, mSideLength});
         mLayer->setZOrder(10);