[Bf-viewport] OpenGL ES compatibility

[Yuri Kovelenov]

Hi Martijin,

Yes, on Linux/Mac OS the browsers currently use the ANGLE's shader 
validator only, without the translator. However, they plan
to extend their architecture to create an "ultimate" OpenGL ES backend 
for all platforms and drivers.

Here is an ANGLE preso which can be helpful:
https://docs.google.com/presentation/d/1CucIsdGVDmdTWRUbg68IxLE5jXwCb2y1E9YVhQo0thg/pub?start=false&loop=false&slide=id.g26efd2cf6_0178

Yuri


On 08.12.2015 12:02, Martijn Berger wrote:
> HI Yuri,
>
> To be clear I suggested ANGLE mainly in the context of providing a 
> better default GL surface then the GDI drivers do on windows.
> I think we should prefer to use a full OpenGL context if presented by 
> the driver when possible.
>
> Practically I think having to use GLES 2.0 without at some of the 
> extensions: OES_framebuffer_object, OES_texture_half_float, 
> OES_texture_float, OES_vertex_array_object could maybe be limiting our 
> future goals to much. I am also not really clear which subset of this 
> is exposed on what ES 2.0 implementations.
> And getting blender working on an /"OpenGL 2.1 core context"/ ( 2.1 - 
> all features removed from the core context ) is a giant step in this 
> direction by itself. And the current work in master cannot and will 
> not bump us passed OpenGL 2.1 anyway.
>
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