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updates for building with latest post-20.11 dev branch of core USD #1025

Merged
merged 5 commits into from
Dec 23, 2020
Merged

updates for building with latest post-20.11 dev branch of core USD #1025

merged 5 commits into from
Dec 23, 2020

Commits on Dec 21, 2020

  1. use UDIM texture utility from Storm instead of from Glf 

    UDIM texture loading for viewport renders moved from Glf to HdSt for core USD
21.02, and pxr/imaging/glf/udimTexture.{h,cpp} were removed.

This change corresponds to core USD commit
PixarAnimationStudios/OpenUSD@b386653

(Internal change: 2129931)
    @mattyjams
    mattyjams committed Dec 21, 2020
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  2. add pxr/imaging/garch/glApi.h as a GL loader header like glew.h that … 

    …should be included first

Core USD 21.02 dropped the dependency on GLEW in favor of its own GL loader in
garch.
    @mattyjams
    mattyjams committed Dec 21, 2020
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  3. remove now redundant GarchGLApiLoad() when creating Storm render dele… 

    …gate in mtoh

For core USD 21.02, GlfContextCaps::InitInstance() was updated to call
GarchGLApiLoad() itself in the following core USD commit:
PixarAnimationStudios/OpenUSD@4034139

As a result, the call to GarchGLApiLoad() that was added in Autodesk#1007, and the
accompanying include of glApi.h, were made redundant and are no longer
necessary. The call to GlfGlewInit() remains for earlier versions of core USD.
    @mattyjams
    mattyjams committed Dec 21, 2020
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  4. replace GLEW with Garch GL loader for core USD 21.02 and later 

    For core USD 21.02 and beyond, the pxr imaging code no longer uses GLEW. These
changes remove the GLEW dependency for 21.02+ and replace it with the Garch GL
loader.

(Internal change: 2130565)
    @mattyjams
    mattyjams committed Dec 21, 2020
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  5. update most recent supported core USD commit in build.md 

    This identifies core USD commit 5904885 (post 20.11 release) as the most recent
supported version of USD:

PixarAnimationStudios/OpenUSD@5904885
    @mattyjams
    mattyjams committed Dec 21, 2020
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