Qt 5.15.2 Declarative patch to build with LLVM MinGW.

qt5.15.2-qtdeclarative.patch

diff -Naur old/src/plugins/scenegraph/d3d12/qsgd3d12engine.cpp new/src/plugins/scenegraph/d3d12/qsgd3d12engine.cpp
--- old/src/plugins/scenegraph/d3d12/qsgd3d12engine.cpp	2020-10-27 09:02:12.000000000 +0100
+++ new/src/plugins/scenegraph/d3d12/qsgd3d12engine.cpp	2021-06-17 18:41:00.815070000 +0200
@@ -37,6 +37,7 @@
 **
 ****************************************************************************/
 
+#include <initguid.h>
 #include "qsgd3d12engine_p.h"
 #include "qsgd3d12engine_p_p.h"
 #include "cs_mipmapgen.hlslh"
@@ -62,6 +63,7 @@
 #endif
 
 #include <comdef.h>
+#include <d3d12sdklayers.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -221,7 +223,7 @@
         if (SUCCEEDED(factory->EnumAdapters1(adapterIndex, &adapter))) {
             adapter->GetDesc1(&desc);
             const QString name = QString::fromUtf16((char16_t *) desc.Description);
-            HRESULT hr = D3D12CreateDevice(adapter.Get(), fl, _uuidof(ID3D12Device), nullptr);
+            HRESULT hr = D3D12CreateDevice(adapter.Get(), fl, IID_ID3D12Device, nullptr);
             if (SUCCEEDED(hr)) {
                 qCDebug(QSG_LOG_INFO_GENERAL, "Using requested adapter '%s'", qPrintable(name));
                 *outAdapter = adapter.Detach();
@@ -238,7 +240,7 @@
         if (desc.Flags & DXGI_ADAPTER_FLAG_SOFTWARE)
             continue;
 
-        if (SUCCEEDED(D3D12CreateDevice(adapter.Get(), fl, _uuidof(ID3D12Device), nullptr))) {
+        if (SUCCEEDED(D3D12CreateDevice(adapter.Get(), fl, IID_ID3D12Device, nullptr))) {
             const QString name = QString::fromUtf16((char16_t *) desc.Description);
             qCDebug(QSG_LOG_INFO_GENERAL, "Using adapter '%s'", qPrintable(name));
             break;