107912 2013-01-24 21:54:29 -0800 [TexMap] GraphicsLayerTextureMapper::setContentsNeedsDisplay() marks a ContentsDisplayChange dirty bit. 2022-06-21 20:29:42 -0700 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) Unspecified Unspecified RESOLVED DUPLICATE 108312 P2 Normal --- 107073 1 dongseong.hwang webkit-unassigned fujii oldest_to_newest 816201 0 dongseong.hwang 2013-01-24 21:54:29 -0800 Currently, GraphicsLayerTextureMapper::setContentsNeedsDisplay() marks a DisplayChange dirty bit. 1877205 1 fujii 2022-06-21 20:23:48 -0700 WinCairo WK1 is still using GraphicsLayerTextureMapper. DisplayChange is needed to update WebGL canvas update. If I remove the line, the following demo doesn't render as expected while mouse drugging. https://threejs.org/examples/#webgl_geometry_teapot diff --git a/Source/WebCore/platform/graphics/texmap/GraphicsLayerTextureMapper.cpp b/Source/WebCore/platform/graphics/texmap/GraphicsLayerTextureMapper.cpp index 465a57e1c558..a661cb1e3ce3 100644 --- a/Source/WebCore/platform/graphics/texmap/GraphicsLayerTextureMapper.cpp +++ b/Source/WebCore/platform/graphics/texmap/GraphicsLayerTextureMapper.cpp @@ -77,7 +77,6 @@ void GraphicsLayerTextureMapper::setNeedsDisplay() void GraphicsLayerTextureMapper::setContentsNeedsDisplay() { - notifyChange(DisplayChange); addRepaintRect(contentsRect()); } 1877207 2 fujii 2022-06-21 20:29:23 -0700 I misunderstood. You suggested using ContentsDisplayChange rather than DisplayChange. 1877208 3 fujii 2022-06-21 20:29:42 -0700 *** This bug has been marked as a duplicate of bug 108312 ***