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From 5ff75fbe51d5760a96b4e614617c9cbf35f1fbaa Mon Sep 17 00:00:00 2001
From: Markus Stange <mstange@themasta.com>
Date: Mon, 5 Jan 2015 18:40:27 +0100
Subject: [PATCH] Bug 1117304 - Make sure the tile filter doesn't call CopyRect
on surfaces with different formats. r=Bas, a=sledru
---
gfx/2d/FilterNodeSoftware.cpp | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/gfx/2d/FilterNodeSoftware.cpp b/gfx/2d/FilterNodeSoftware.cpp
index 396d0da..10d92c6 100644
--- a/gfx/2d/FilterNodeSoftware.cpp
+++ b/gfx/2d/FilterNodeSoftware.cpp
@@ -1568,7 +1568,16 @@ FilterNodeTileSoftware::Render(const IntRect& aRect)
return nullptr;
}
}
- MOZ_ASSERT(input->GetFormat() == target->GetFormat(), "different surface formats from the same input?");
+
+ if (input->GetFormat() != target->GetFormat()) {
+ // Different rectangles of the input can have different formats. If
+ // that happens, just convert everything to B8G8R8A8.
+ target = FilterProcessing::ConvertToB8G8R8A8(target);
+ input = FilterProcessing::ConvertToB8G8R8A8(input);
+ if (MOZ2D_WARN_IF(!target) || MOZ2D_WARN_IF(!input)) {
+ return nullptr;
+ }
+ }
CopyRect(input, target, srcRect - srcRect.TopLeft(), destRect.TopLeft() - aRect.TopLeft());
}
--
2.2.1