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RE: [Public WebGL] IE11

Hi John


Wrt: “_javascript_ is still slower in IE11” – We’re very interested in scenarios where we can improve _javascript_ performance; if you can point us to scenarios, we’d appreciate it.


Wrt resources:

IE Blog: http://blogs.msdn.com/b/ie/; we’ll be posting more about WebGL soon.


MSDN reference: http://msdn.microsoft.com/en-us/library/ie/bg182648(v=vs.85).aspx; we update this continuously.


Our recent updates:

IE11 v0.93 WebGL renderer

aka ‘Spring 2014 Update’

Compressed textures

Stencil buffers

Standard derivatives extension 


More GLSL conformance (structs, inout, constructors)

GLSL Point-size support (DX10+ only)

GLSL Frontfacing support

Support for alpha WebGLContextAttribute

Non-float vertices


vertexAttrib{1,2,3,4}f[v] methods


IE11 v0.94 WebGL renderer

aka ‘Summer 2014 Update’

Instancing extension

failIfMajorPerformanceCaveat context attribute

Triangle fans and line loops (emulated)

16-bit textures support (emulated)

UNSIGNED_BYTE element arrays (emulated)


We’re at ~97% compliance with Khronos test suites now, and we are working on the remaining gaps.



Frank Olivier

Internet Explorer WebGL team


From: owners-public_webgl@khronos.org [mailto:owners-public_webgl@khronos.org] On Behalf Of John Davis
Sent: Sunday, October 5, 2014 9:55 AM
To: public webgl
Subject: [Public WebGL] IE11


Is there a changelog where we can follow webgl updates for IE11?  From what I can tell, on the GPU side of things, IE11 is surpassing chrome and firefox.


_javascript_ is still slower in IE11, but the webgl/gpu thing definitely appears to be leap frogging the others.