15265 2007-09-23 14:53:26 -0700 Canvas shadows not rendered unless shadowBlur/OffsetX/OffsetY set 2010-08-21 05:39:12 -0700 1 1 1 Unclassified WebKit Layout and Rendering 523.x (Safari 3) PC Windows Server 2003 RESOLVED INVALID P2 Normal --- 1 excors webkit-unassigned kling oldest_to_newest 81 0 excors 2007-09-23 14:53:26 -0700 When shadowColor is set to some colour and a shape is rendered, the shadow is not drawn iff shadowBlur = shadowOffsetX = shadowOffsetY = 0. 82 1 16363 excors 2007-09-23 14:56:25 -0700 Created attachment 16363 test case This should draw the shadow first, then draw the rectangle on top, with the XOR compositing resulting in a transparent canvas. If you set shadowBlur or shadowOffset{X,Y} before drawing the shadow, then it works as expected. 93491 2 eric 2008-09-30 20:30:58 -0700 What does the HTML5 spec say about this? 267558 3 kling 2010-08-21 05:39:12 -0700 Quoth HTML5: "Shadows are only drawn if the opacity component of the alpha component of the color of shadowColor is non-zero and either the shadowBlur is non-zero, or the shadowOffsetX is non-zero, or the shadowOffsetY is non-zero." http://www.whatwg.org/specs/web-apps/current-work/#shadows 16363 2007-09-23 14:56:25 -0700 2007-09-23 14:56:25 -0700 test case default-shadow.html text/html 425 excors PCFET0NUWVBFIEhUTUw+Cjx0aXRsZT5jYW52YXMgc2hhZG93IHJlbmRlcmluZyB3aXRoIG5vIGJs dXIvb2Zmc2V0PC90aXRsZT4KPHA+VGhpcyBzaG91bGQgYmUgZ3JlZW46CjxwPjxjYW52YXMgd2lk dGg9IjEwMCIgaGVpZ2h0PSIxMDAiIGlkPSJjIiBzdHlsZT0iYmFja2dyb3VuZDogbGltZSI+PC9j YW52YXM+CjxzY3JpcHQ+CndpbmRvdy5vbmxvYWQgPSBmdW5jdGlvbiAoKSB7CiAgICB2YXIgY3R4 ID0gZG9jdW1lbnQuZ2V0RWxlbWVudEJ5SWQoJ2MnKS5nZXRDb250ZXh0KCcyZCcpOwoKICAgIGN0 eC5nbG9iYWxDb21wb3NpdGVPcGVyYXRpb24gPSAneG9yJzsKICAgIGN0eC5zaGFkb3dDb2xvciA9 ICcjZjAwJzsKICAgIGN0eC5maWxsU3R5bGUgPSAnI2YwMCc7CiAgICBjdHguZmlsbFJlY3QoMCwg MCwgMTAwLCAxMDApOwp9Cjwvc2NyaXB0Pgo=