On 1/25/19 8:25 AM, Stéphane Marchesin wrote:
On Thu, Jan 24, 2019 at 10:17 PM Tapani Pälli <tapani.pa...@intel.com> wrote:
Hi;
On 1/25/19 4:57 AM, Stéphane Marchesin wrote:
Hi,
We'd like to expose fp64 functionality on Chrome OS where we only have
GLES. It seems like a simple approach is to enable this extension for
GLES:
https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_gpu_shader_fp64.txt
Anyone knows if what's the right thing to do? It seems to me that the
extension might just work on GLES without any changes, but I could be
missing something.
Sorry for not responding the the actual question but could you share the
usecase? Back when this was enabled for HW that supports it we did not
find applications (just some fractal shadertoy things), would be
interesting to know how it is being used.
Yes, it's for running virgl on top of GLES. To emulate fp64 in GL on
the guest side, we need fp64 on the host...
OK thanks. One thing that comes to mind (specific to GLSL ES) is that
should double type have precision qualifier support? Maybe some specific
rules what happens when expression has both floats and doubles with some
precision qualifiers ... there might be a lot more things to this but
this is what comes first to my mind.
// Tapani
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