1 files changed, 56 insertions, 0 deletions
diff --git a/www/librewolf/files/patch-bug1716707 b/www/librewolf/files/patch-bug1716707
new file mode 100644
index 000000000000..33ff73450b73
--- /dev/null
+++ b/www/librewolf/files/patch-bug1716707
@@ -0,0 +1,56 @@
+commit ce7a2f400d4f599c72e32e2635fee7ea94c0848c
+Author: Christoph Moench-Tegeder <cmt@burggraben.net>
+Date:   Wed Apr 13 14:44:46 2022 +0200
+
+    big-endian color fixes, but without breaking little-endian
+    
+    as le is what most people actually use
+
+diff --git gfx/webrender_bindings/RenderCompositorSWGL.cpp gfx/webrender_bindings/RenderCompositorSWGL.cpp
+index dbf137c849ee..243a01ff9cf3 100644
+--- gfx/webrender_bindings/RenderCompositorSWGL.cpp
++++ gfx/webrender_bindings/RenderCompositorSWGL.cpp
+@@ -7,6 +7,7 @@
+ #include "RenderCompositorSWGL.h"
+ 
+ #include "mozilla/gfx/Logging.h"
++#include "mozilla/gfx/Swizzle.h"
+ #include "mozilla/widget/CompositorWidget.h"
+ 
+ #ifdef MOZ_WIDGET_GTK
+@@ -235,6 +236,13 @@ void RenderCompositorSWGL::CommitMappedBuffer(bool aDirty) {
+   }
+   mDT->Flush();
+ 
++#if MOZ_BIG_ENDIAN()
++  // One swizzle to rule them all.
++  gfx::SwizzleData(mMappedData, mMappedStride, gfx::SurfaceFormat::B8G8R8A8,
++                   mMappedData, mMappedStride, gfx::SurfaceFormat::A8R8G8B8,
++                   mDT->GetSize());
++#endif
++
+   // Done with the DT. Hand it back to the widget and clear out any trace of it.
+   mWidget->EndRemoteDrawingInRegion(mDT, mDirtyRegion);
+   mDirtyRegion.SetEmpty();
+diff --git image/imgFrame.cpp image/imgFrame.cpp
+index e58c3dd5b2d4..c1e7e77c362b 100644
+--- image/imgFrame.cpp
++++ image/imgFrame.cpp
+@@ -372,6 +372,17 @@ nsresult imgFrame::InitWithDrawable(gfxDrawable* aDrawable,
+     return NS_ERROR_OUT_OF_MEMORY;
+   }
+ 
++#if MOZ_BIG_ENDIAN()
++  if (aBackend == gfx::BackendType::SKIA && canUseDataSurface) {
++    // SKIA is lying about what format it returns on big endian
++    for (int ii=0; ii < mRawSurface->GetSize().Height()*mRawSurface->Stride() / 4; ++ii) {
++      uint32_t *vals = (uint32_t*)(mRawSurface->GetData());
++      uint32_t val = ((vals[ii] << 8) & 0xFF00FF00 ) | ((vals[ii] >> 8) & 0xFF00FF );
++      vals[ii] = (val << 16) | (val >> 16);
++    }
++  }
++#endif
++
+   if (!canUseDataSurface) {
+     // We used an offscreen surface, which is an "optimized" surface from
+     // imgFrame's perspective.