Support software vertex processing

src/libEGL/Display.cpp

@@ -56,7 +56,7 @@ bool Display::initialize()
             return error(EGL_BAD_ALLOC, false);
         }
 
-        if (caps.PixelShaderVersion < D3DPS_VERSION(2, 0) || caps.VertexShaderVersion < D3DVS_VERSION(2, 0))
+        if (caps.PixelShaderVersion < D3DPS_VERSION(2, 0))
         {
             mD3d9->Release();
             mD3d9 = NULL;
@@ -216,8 +216,6 @@ egl::Surface *Display::createWindowSurface(HWND window, EGLConfig config)
 {
     const egl::Config *configuration = mConfigSet.get(config);
 
-    UINT adapter = D3DADAPTER_DEFAULT;
-    D3DDEVTYPE deviceType = D3DDEVTYPE_HAL;
     D3DPRESENT_PARAMETERS presentParameters = {0};
 
     presentParameters.AutoDepthStencilFormat = configuration->mDepthStencilFormat;
@@ -239,13 +237,27 @@ egl::Surface *Display::createWindowSurface(HWND window, EGLConfig config)
 
     if (!mDevice)
     {
-        HRESULT result = mD3d9->CreateDevice(adapter, deviceType, window, D3DCREATE_FPU_PRESERVE | D3DCREATE_MIXED_VERTEXPROCESSING | D3DCREATE_NOWINDOWCHANGES, &presentParameters, &mDevice);
+        UINT adapter = D3DADAPTER_DEFAULT;
+        D3DDEVTYPE deviceType = D3DDEVTYPE_HAL;
+        DWORD behaviorFlags = D3DCREATE_FPU_PRESERVE | D3DCREATE_NOWINDOWCHANGES;
+
+        HRESULT result = mD3d9->CreateDevice(adapter, deviceType, window, behaviorFlags | D3DCREATE_HARDWARE_VERTEXPROCESSING | D3DCREATE_PUREDEVICE, &presentParameters, &mDevice);
 
         if (result == D3DERR_OUTOFVIDEOMEMORY || result == E_OUTOFMEMORY)
         {
             return error(EGL_BAD_ALLOC, (egl::Surface*)NULL);
         }
 
+        if (FAILED(result))
+        {
+            result = mD3d9->CreateDevice(adapter, deviceType, window, behaviorFlags | D3DCREATE_SOFTWARE_VERTEXPROCESSING, &presentParameters, &mDevice);
+
+            if (result == D3DERR_OUTOFVIDEOMEMORY || result == E_OUTOFMEMORY)
+            {
+                return error(EGL_BAD_ALLOC, (egl::Surface*)NULL);
+            }
+        }
+
         ASSERT(SUCCEEDED(result));
 
         if (mDevice)