image transformation bug

[blend2d]

image transformation bug

[kobalicek]

I'm not able to help without seeing the resulting image.

[randomguy76845]

This is from getting-started-4.

Windows 7
Visual Studio 2017
Default configurations from blend2d-beta-all.zip

[yzrmn]

I cannot reproduce it with master or website download (Windows 10 and Visual Studio 2019).

@randomguy76845 What CPU are you using? Is your dev environment inside a VM?

[randomguy76845]

I've tried Visual Studio 2019, still same result.
I replaced my cairo backend for GUI subsystem with blend2d and everything else works except image transformation.
If everyone else have no problem, that means something is wrong with my environment.
No VM, this is Intel i5 processor.

[kobalicek]

I will try to make this easier to report such bugs. It still can be Blend2D issue. I would recommend for now using the git version (instead of the package) - I will upload a new package for downloads soon.

[kobalicek]

I did some digging and now I found the issue:

• machine that has SSE4.1 but no AVX - problem in PipeCompiler::vblendv8_()

I'm not sure whether this is in AsmJit or Blend2D, but I will fix it.

[randomguy76845]

I just found out that my CPU is Clarkdale. It's before Sandy Bridge, that means no AVX. I forgot how old my computer is.

[kobalicek]

It's okay, Blend2D baseline optimization level is SSE2 (you need at least SSE2 capable CPU on x86 arch).

[kobalicek]

This commit fixes the issue: asmjit/asmjit@872b23b

[kobalicek]

I will make a new source release today with the fix, for now you can just pull the git sources.

[randomguy76845]

okay it works on getting-started-4. Adding some scaling operation also works. Need sometime to test my GUI.

[randomguy76845]

Found some bugs. I think it's better i start another issues since this one already solved.