It makes sense to generate convenience overloads for each relevant
wrapper function, instead of each entry point. This way, we generate
convenience overloads for every wrapper in overrides.xml (even wrappers
for background compatibility), which would otherwise be ignored.
When a function parameter matches a strongly-typed enum, the parameter
type is explicitly set to that enum. This fixes issues with function
parameters referring to enums whose names change after translation.
Tools now go to the Binaries/Tools/[Debug|Release] directory. OpenTK
remains at BInaries/OpenTK/[Debug|Release].
Mono.Cecil and IKVM now reside under the Dependencies/managed/
directory.
Instead of modifying the name of an OpenGL symbol on the managed side,
before copying it to the unmanaged side, we perform the modification
directly on the unmanaged side. This reduces the total amount of
allocations in OpenTK by ~30% (673496 bytes in 10750 objects compared
to 930272 bytes in 15243 objects before this modification.)
WS_CLIPCHILDREN and WS_CLIPSIBLINGS appear to cause flickering on
specific video cards. OpenGL appears to work correctly without these, so
we'll disable them to return to OpenTK 1.0 behavior.
It is now possible to indicate that an application is not DPI-aware. In
that case, OpenTK will let the operating system handle DPI scaling. This
results in worse visuals (pixel doubling) but allows non DPI-aware
applications to continue working.
It appears that calli callsites cannot be decorated with the
“platformapi” calling convention like DllImport signatures can. This is
problematic since Windows uses stdcall by default and most other
platforms use cdecl.
There are three approaches to this issue, without going back to
delegate calls: (a) generate an unmanaged thunk that cleans up the
stack after a GL call; (b) use libFFI; (c) use cdecl *or* stdcall
everywhere and hope that the runtime can cope.
.Net 2.0 can detect and fix stdcall functions invoked through a cdecl
callsite. .Net 4.0 adds a configuration option to enable or disable
this fixup (faster p/invoke if disabled) and raise a MDA exception when
this condition is detected. (This affects x86 only.)
Mono appears to be able to cope with cdecl functions invoked through a
stdcall callsite.
More testing is required.
We should be able to use static pinvokes on platforms that do not
provide or require extensions and calli instructions on platforms with
extension APIs. This dinstiction will be implemented as a parameter in
the rewriter.
By using untyped integers instead of typed integers in the unmanaged
callsites, we allow monolinker to keep the exact set of enums that are
used by the user. Without this, we’d have to keep every single enum in
place to avoid missing type exceptions.
This does not affect the public signatures or the generated code in any
way.
This includes arrays of primitives and arrays of generics. Our code is
similar to the code generated by the Mono C# compiler for the "fixed"
construct. The .Net compiler produces slightly different code (two local
variables instead of one) - more research is required.
Default results in a managed calling convention which does not generate
unmanaged thunking code for parameter marshaling.
System.Runtime.InteropServices.CallingConvention.Winapi appears to
correspond to StdCall for calli callsites (this might be different for
pinvoke, which supports an unmanaged "platformapi" calling convention.)
Needs more testing to prove this is doing the right thing on non-Windows
platforms.
