[Public WebGL] MIP rendering in WebGL (integration of EXT_blend_minmax)
Wed Dec 12 10:42:25 PST 2012
Also specified in:
- OpenGL ES 3.0 (2012):
- OpenGL 2.0 (2004) :
On Wed, Dec 12, 2012 at 7:22 PM, Florian Bösch <[email protected]> wrote:
> Specified In:
> - OpenGL Extension EXT_blend_minmax. Initially introduced 1995 by SGI,
> modified 2009 for ES.
> - OpenGL ES EXT_blend_minmax. Introduced 2009:
> - Direct3D: D3DBLENDOP_MIN/MAX, Released with Direct3D 9.0 in 2002
> Hardware Availability:
> - Desktop D3D: 99.45% (Not being DX8 GPUs or below) source:
> - Desktop OpenGL: 98%, source:
> - Mobiles: As of November 2012, 228 devices out of 783, source:
> Proposal Extension: https://github.com/KhronosGroup/WebGL/pull/109
> On Wed, Dec 12, 2012 at 5:58 PM, Sébastien Jodogne <[email protected]>wrote:
>> Dear all,
>> I am the main developer of the Orthanc open-source software, that is an
>> open-source server for storing medical images . We currently plan to
>> extend Orthanc so as to propose a Web-based interface for displaying 2D/3D
>> images according to medical standards. Obviously, this would be a huge step
>> toward the adoption of WebGL in scientific applications.
>> Unfortunately, medical/scientific visualization requires native support
>> for MIP rendering (Maximum Intensity Projection) in WebGL . Currently,
>> it seems that only the FUNC_ADD, FUND_SUBTRACT and FUNC_REVERSE_SUBTRACT
>> blending equations are supported in OpenGL ES . However, the extension
>> "EXT_blend_minmax" currently brings MIP rendering to OpenGL ES , but not
>> (yet) to WebGL.
>> I am therefore convinced that porting the "EXT_blend_minmax" inside WebGL
>> would be of major interest for the adoption of WebGL, both in medical and
>> scientific applications.
>> How is it possible to suggest to the Khronos group to integrate this
>> extension inside WebGL? Should we contact Firefox developers?
>> Thanks in advance for your help,
>> S. Jodogne-
>>  https://code.google.com/p/orthanc/
>>  http://en.wikipedia.org/wiki/Maximum_intensity_projection
>>  http://www.opengl.org/registry/specs/EXT/blend_minmax.txt
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