Ensure we do not try to create a swapchain with dimensions smaller than 1x1.

src/libGLESv2/renderer/Renderer11.cpp

@@ -2678,14 +2678,17 @@ RenderTarget *Renderer11::createRenderTarget(SwapChain *swapChain, bool depth)
 {
     SwapChain11 *swapChain11 = SwapChain11::makeSwapChain11(swapChain);
     RenderTarget11 *renderTarget = NULL;
+
     if (depth)
     {
+        // Note: depth stencil may be NULL for 0 sized surfaces
         renderTarget = new RenderTarget11(this, swapChain11->getDepthStencil(),
                                           swapChain11->getDepthStencilTexture(), NULL,
                                           swapChain11->getWidth(), swapChain11->getHeight());
     }
     else
     {
+        // Note: render target may be NULL for 0 sized surfaces
         renderTarget = new RenderTarget11(this, swapChain11->getRenderTarget(),
                                           swapChain11->getOffscreenTexture(),
                                           swapChain11->getRenderTargetShaderResource(),

src/libGLESv2/renderer/SwapChain11.cpp

@@ -459,6 +459,13 @@ EGLint SwapChain11::reset(int backbufferWidth, int backbufferHeight, EGLint swap
         return EGL_BAD_PARAMETER;
     }
 
+    // EGL allows creating a surface with 0x0 dimension, however, DXGI does not like 0x0 swapchains
+    if (backbufferWidth < 1 || backbufferHeight < 1)
+    {
+        releaseOffscreenTexture();
+        return EGL_SUCCESS;
+    }
+
     if (mWindow)
     {
         // We cannot create a swap chain for an HWND that is owned by a different process