1 files changed, 31 insertions, 18 deletions

diff --git a/gfx/angle/src/libANGLE/renderer/d3d/d3d11/SwapChain11.cpp b/gfx/angle/src/libANGLE/renderer/d3d/d3d11/SwapChain11.cpp
index a410c425d..b12fd80d2 100755
--- a/gfx/angle/src/libANGLE/renderer/d3d/d3d11/SwapChain11.cpp
+++ b/gfx/angle/src/libANGLE/renderer/d3d/d3d11/SwapChain11.cpp
@@ -45,11 +45,10 @@ bool NeedsOffscreenTexture(Renderer11 *renderer, NativeWindow11 *nativeWindow, E
 SwapChain11::SwapChain11(Renderer11 *renderer,
                          NativeWindow11 *nativeWindow,
                          HANDLE shareHandle,
-                         IUnknown *d3dTexture,
                          GLenum backBufferFormat,
                          GLenum depthBufferFormat,
                          EGLint orientation)
-    : SwapChainD3D(shareHandle, d3dTexture, backBufferFormat, depthBufferFormat),
+    : SwapChainD3D(shareHandle, backBufferFormat, depthBufferFormat),
       mRenderer(renderer),
       mWidth(-1),
       mHeight(-1),
@@ -181,29 +180,43 @@ EGLint SwapChain11::resetOffscreenColorBuffer(int backbufferWidth, int backbuffe
     const d3d11::Format &backbufferFormatInfo =
         d3d11::Format::Get(mOffscreenRenderTargetFormat, mRenderer->getRenderer11DeviceCaps());
 
-    // If the app passed in a share handle or D3D texture, open the resource
-    // See EGL_ANGLE_d3d_share_handle_client_buffer and EGL_ANGLE_d3d_texture_client_buffer
-    if (mAppCreatedShareHandle || mD3DTexture != nullptr)
+    // If the app passed in a share handle, open the resource
+    // See EGL_ANGLE_d3d_share_handle_client_buffer
+    if (mAppCreatedShareHandle)
     {
-        if (mAppCreatedShareHandle)
-        {
-            ID3D11Resource *tempResource11;
-            HRESULT result = device->OpenSharedResource(mShareHandle, __uuidof(ID3D11Resource),
-                                                        (void **)&tempResource11);
-            ASSERT(SUCCEEDED(result));
+        ID3D11Resource *tempResource11;
+        HRESULT result = device->OpenSharedResource(mShareHandle, __uuidof(ID3D11Resource), (void**)&tempResource11);
 
-            mOffscreenTexture = d3d11::DynamicCastComObject<ID3D11Texture2D>(tempResource11);
-            SafeRelease(tempResource11);
+        if (FAILED(result))
+        {
+            ERR("Failed to open the swap chain pbuffer share handle: %08lX", result);
+            release();
+            return EGL_BAD_PARAMETER;
         }
-        else if (mD3DTexture != nullptr)
+
+        result = tempResource11->QueryInterface(__uuidof(ID3D11Texture2D), (void**)&mOffscreenTexture);
+        SafeRelease(tempResource11);
+
+        if (FAILED(result))
         {
-            mOffscreenTexture = d3d11::DynamicCastComObject<ID3D11Texture2D>(mD3DTexture);
+            ERR("Failed to query texture2d interface in pbuffer share handle: %08lX", result);
+            release();
+            return EGL_BAD_PARAMETER;
         }
-        else
+
+        // Validate offscreen texture parameters
+        D3D11_TEXTURE2D_DESC offscreenTextureDesc = {0};
+        mOffscreenTexture->GetDesc(&offscreenTextureDesc);
+
+        if (offscreenTextureDesc.Width != (UINT)backbufferWidth ||
+            offscreenTextureDesc.Height != (UINT)backbufferHeight ||
+            offscreenTextureDesc.Format != backbufferFormatInfo.texFormat ||
+            offscreenTextureDesc.MipLevels != 1 || offscreenTextureDesc.ArraySize != 1)
         {
-            UNREACHABLE();
+            ERR("Invalid texture parameters in the shared offscreen texture pbuffer");
+            release();
+            return EGL_BAD_PARAMETER;
         }
-        ASSERT(mOffscreenTexture != nullptr);
     }
     else
     {