218972 2020-11-16 01:31:14 -0800 Use downcast instead of static_cast for casting GraphicsContextGL -> GraphicsContextGLOpenGL 2020-11-26 03:17:37 -0800 1 1 1 Unclassified WebKit WebGL WebKit Local Build Unspecified Unspecified NEW InRadar P2 Normal --- 218333 1 kkinnunen webkit-unassigned dino webkit-bug-importer oldest_to_newest 1707719 0 kkinnunen 2020-11-16 01:31:14 -0800 Use downcast instead of static_cast for casting GraphicsContextGL to GraphicsContextGLOpenGL This is to be done only if removing !USE(ANGLE) from WebGL implementation is not possible. https://bugs.webkit.org/show_bug.cgi?id=218333#c9 Simon Fraser (smfr) 2020-11-13 10:38:15 PST >> Source/WebCore/html/canvas/WebGLRenderingContextBase.cpp:1790 >> + static_cast<GraphicsContextGLOpenGL*>(m_context.get())->compressedTexImage2D(target, level, internalformat, width, height, >I think you should add SPECIALIZE_TYPE_TRAITS macros and use downcast<> for all these casts. 1710121 1 webkit-bug-importer 2020-11-26 03:17:37 -0800 <rdar://problem/71747680>