1202026 - clang-cl builds have trouble painting

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect)

Description

[(Away)]

I don't know the right terminology to describe it. Often it's black (or background-colored) regions. Sometimes things get fixed when I mouse over the areas or resize the window.

It seems to happen independently of whether I have SSE enabled, and whether or not I add ASAN into the mix.

I need to debug further...

Comment 1

[(Away)]

Attachment: clangcl_noasan_nosse_opt.png

Comment 2

[(Away)]

Attachment: clangcl_asan_sse_opt.png

Comment 3

[(Away)]

This issue appears at default optimization and at -O1, but not in --disable-optimize builds.

Comment 4

[Nathan Froyd [:froydnj]]

I can see this with --disable-optimize (--enable-debug) builds, but not in --enable-optimize builds (--enable-optimize builds hit an assert that we don't see in regular MSVC builds, and the process exits).

Comment 5

[u279076]

It's been several months, does this bug still reproduce?

Comment 6

[Nathan Froyd [:froydnj]]

This bug does not reproduce for me with recent clang-cl.  I'm going to call it good.