Skia viewer fails with "validate_backend_texture failed" when switching to Graphite backend on Intel GPU / Windows

[Marek “maf” Rogalski]

Hi,

I would like to report a couple issues:

1. Skia issue tracker doesn't allow me to submit new issues (hence I'm sharing it here):

2. https://skia-review.googlesource.com/c/skia/+/946201 seems to have broken Skia sample viewer when using Graphite backend on Intel GPU on Windows (the Windows bit may be irrelevant). This is because it now requires the INPUT_ATTACHMENT usage flag. The window surface that my OS creates only supports these input usage flags (INPUT_ATTACHMENT is missing):

The issue can be triggered by starting the viewer and then switching it to Vulkan(Graphite) backend, an a relatively recent Intel laptop.

When reverting to milestone 136 (before the change went in), the graphite backend works again.

3. (tiny issue) - third_party\Skia\include\gpu\graphite\PrecompileContext.h seems to be missing "#include <string>". It only seems to cause issues when compiling on Windows.

[thom...@google.com]

Hi Marek,

Thank you, I will create an issue for this.