diff options
Diffstat (limited to 'Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp')
| -rw-r--r-- | Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp b/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp index 75a36e5..023d098 100644 --- a/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp +++ b/Source/WebCore/platform/graphics/cg/ImageBufferCG.cpp @@ -54,6 +54,8 @@ using namespace std; namespace WebCore { #if USE(IOSURFACE_CANVAS_BACKING_STORE) +static const int maxIOSurfaceDimension = 4096; + static RetainPtr<IOSurfaceRef> createIOSurface(const IntSize& size) { unsigned pixelFormat = 'BGRA'; @@ -110,12 +112,15 @@ ImageBuffer::ImageBuffer(const IntSize& size, ColorSpace imageColorSpace, Render , m_size(size) , m_accelerateRendering(renderingMode == Accelerated) { -#if !USE(IOSURFACE_CANVAS_BACKING_STORE) - ASSERT(renderingMode == Unaccelerated); -#endif success = false; // Make early return mean failure. if (size.width() < 0 || size.height() < 0) return; +#if USE(IOSURFACE_CANVAS_BACKING_STORE) + if (size.width() >= maxIOSurfaceDimension || size.height() >= maxIOSurfaceDimension) + m_accelerateRendering = false; +#else + ASSERT(renderingMode == Unaccelerated); +#endif unsigned bytesPerRow = size.width(); if (bytesPerRow > 0x3FFFFFFF) // Protect against overflow |