1 files changed, 40 insertions, 0 deletions
diff --git a/external/skia/fix-windows-dwrite.patch.1 b/external/skia/fix-windows-dwrite.patch.1
new file mode 100644
index 0000000000..b5f216a525
--- /dev/null
+++ b/external/skia/fix-windows-dwrite.patch.1
@@ -0,0 +1,40 @@
+diff --git a/src/ports/SkFontMgr_win_dw.cpp b/src/ports/SkFontMgr_win_dw.cpp
+index 6a4748f91c..50086a7780 100644
+--- a/src/ports/SkFontMgr_win_dw.cpp
++++ b/src/ports/SkFontMgr_win_dw.cpp
+@@ -361,6 +361,7 @@ static bool FindByDWriteFont(SkTypeface* cached, void* ctx) {
+     DWriteFontTypeface* cshFace = reinterpret_cast<DWriteFontTypeface*>(cached);
+     ProtoDWriteTypeface* ctxFace = reinterpret_cast<ProtoDWriteTypeface*>(ctx);
+ 
++#if defined(NTDDI_WIN10_RS3) && NTDDI_VERSION >= NTDDI_WIN10_RS3
+     // IDWriteFontFace5 introduced both Equals and HasVariations
+     SkTScopedComPtr<IDWriteFontFace5> cshFontFace5;
+     SkTScopedComPtr<IDWriteFontFace5> ctxFontFace5;
+@@ -369,6 +370,7 @@ static bool FindByDWriteFont(SkTypeface* cached, void* ctx) {
+     if (cshFontFace5 && ctxFontFace5) {
+         return cshFontFace5->Equals(ctxFontFace5.get());
+     }
++#endif
+ 
+     bool same;
+ 
+diff --git a/src/ports/SkScalerContext_win_dw.cpp b/src/ports/SkScalerContext_win_dw.cpp
+index b2df467b22..385094e506 100644
+--- a/src/ports/SkScalerContext_win_dw.cpp
++++ b/src/ports/SkScalerContext_win_dw.cpp
+@@ -778,6 +778,7 @@ void SkScalerContext_DW::generateFontMetrics(SkFontMetrics* metrics) {
+     metrics->fFlags |= SkFontMetrics::kStrikeoutThicknessIsValid_Flag;
+     metrics->fFlags |= SkFontMetrics::kStrikeoutPositionIsValid_Flag;
+ 
++#if defined(NTDDI_WIN10_RS3) && NTDDI_VERSION >= NTDDI_WIN10_RS3
+     SkTScopedComPtr<IDWriteFontFace5> fontFace5;
+     if (SUCCEEDED(this->getDWriteTypeface()->fDWriteFontFace->QueryInterface(&fontFace5))) {
+         if (fontFace5->HasVariations()) {
+@@ -785,6 +786,7 @@ void SkScalerContext_DW::generateFontMetrics(SkFontMetrics* metrics) {
+             metrics->fFlags |= SkFontMetrics::kBoundsInvalid_Flag;
+         }
+     }
++#endif
+ 
+     if (this->getDWriteTypeface()->fDWriteFontFace1.get()) {
+         DWRITE_FONT_METRICS1 dwfm1;