Fixing PPM export and windows build errors with VS 22

[dabeschte]

This small PR implements all fixes that I needed to make this project compile under Windows 10 with Visual Studio 2022.

• added vulkan: fixed missing "bluevk" library
• set c++ standard to 20. Did not compile with 17, and defaulted at least on my system to latest experimental which did not compile.
• fixed PPM export writing additional bytes which break the file format. This happened, because the file was not opened explicitly as a binary

(reupload because of some CLA/email conflicts)

[romainguy]

What doesn't compile with C++17 for you?

[dabeschte]

I get error C7555 in DriverEnums.h line 1109 and 1113

use of designated initializers requires at least '/std:c++20'

This also occurs in other files like here or here or here

[bejado]

Unfortunately we can't yet support C++ 20, so we need to find another workaround for this.

[pixelflinger]

We can fix these two lines in DriverEnums.h easily so the don't use designated initializers.

Regardless, I thing this is a problem is other places and I thought we were compiling with C++20 already on windows, specifically because of that?

[bejado]

My previous comment only meant that we shouldn't use C++20 globally across the project, since 1P clients are limited to C++1 7 at the moment. On Windows we have more flexibility.

On Windows, we're currently using /std:c++latest for MSVC, but maybe we need to explicitly use /std:c++20 (apparently those two flags have slightly different meanings). @dabeschte can you try replacing this line with /std:c++20 and seeing if it fixes the designated initializer error?

filament/CMakeLists.txt

Line 285 in 626577f

set(CXX_STANDARD "/std:c++17")

[dabeschte]

No that does not work, since the if (MSVC) 3 lines below overrides that. This results in MSVC using the latest preview, not the latest stable compiler version.

The error that I get in this case is

Error	C3878	syntax error: unexpected token 'this' following 'expression'	backend	<filament>\libs\utils\include\utils\Range.h	37	

Caused by this piece of code that actually looks fine to me, but since we are using preview features, I assume the compiler might have a bug here?

    bool overlaps(const Range<T>& that) const noexcept {
        return that.first < this->last && that.last > this->first;
    }

Anyways, changing line 289 in CMakeLists.txt to "/std:c++20" solves the problem for Windows.
That said, MSVC is actually right about the invalid usage of C++20 features in multiple files - not only in DriverEnums.h
G++ just doesn't show a warning by default

[pixelflinger]

C3878 has just been fixed.