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<div dir="auto">Working versions this was before sip and pyqt changed build systems:<br />
Sip 4.19.19<br />
PyQt5 version with pkg name PyQt5_gpl-5.13.1.tar.gz<br />
Qt 5.12.11<br />
<br />
<br />
Versions that shows the problem<br />
Sip 6.1.1<br />
PyQt-builder 1.10.0<br />
PyQt5 5.15.4<br />
PyQt5_sip 12.9.0<br />
Qt 5.12.11<br />
<br />
Sip + pyqt works correctly when run and compiled as x86+64, but provokes the black texture load if compiled and run as arm. <br /></div>
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<div class="matchFont">Iván Yossi
<div><ghevan@gmail.com></div>
<div>IRC: ivanyossi</div>
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<div name="messageReplySection">El 26 de jul de 2021 9:16 -0500, Phil Thompson <phil@riverbankcomputing.com>, escribió:<br />
<blockquote type="cite" style="border-left-color: grey; border-left-width: thin; border-left-style: solid; margin: 5px 5px;padding-left: 10px;">On 26/07/2021 15:08, Iván Yossi wrote:<br />
<blockquote type="cite">Hi, Im a developer at krita and we use sip an pyqt extensively,<br />
however after upgrading SIP to version 6.1.1 and PyQt to 5.15 openGL<br />
we encountered a problem only on macos on arm arquitecture.<br />
<br />
The problem in question is a black texture loaded and is shown on<br />
terminal as:<br />
<br />
qt.qpa.openglcontext: Could not create NSOpenGLContext with shared<br />
context, falling back to unshared context.<br />
Warning: Photoshop IRB data is not padded to even size<br />
qt.qpa.openglcontext: Could not create NSOpenGLContext with shared<br />
context, falling back to unshared context.<br />
UNSUPPORTED (log once): POSSIBLE ISSUE: unit 0 GLD_TEXTURE_INDEX_2D is<br />
unloadable and bound to sampler type (Float) - using zero texture<br />
because texture unloadable<br />
CoreSVG has logged an error. Set environment variabe "CORESVG_VERBOSE"<br />
to learn more.<br />
<br />
digging around it seems the problem is that on arm macOS the M1 chip<br />
openGL initialization is very sensitve needing the QSurfaceFormat<br />
initialization (version 4.1 is prefered and Coreprofile) be<br />
done before any openGL context is loaded.<br />
<br />
The code in krita loads openGL like this and using SIP 4.19.19 does<br />
show the correct textures on arm native binaries, however this is not<br />
the case when moving to the more recent SIP. I tried to dig on pyqt<br />
and sip code but im unfamiliar and could not come up with anything<br />
useful. However I can test any patch or idea that could lead to a<br />
successful texture loading on arm macOS when using current SIP.<br /></blockquote>
<br />
You will need to provide more version information: SIP, PyQt5.sip, PyQt<br />
and Qt for the working versions and the non-working versions.<br />
<br />
Phil<br /></blockquote>
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