Direct2D RenderTarget->GetSize not working

[yuki-kimoto]

I maybe get the problem the same as the following problem.

Direct2D RenderTarget->GetSize not working

https://stackoverflow.com/questions/27888109/rendertarget-getsize-not-working

gcc is MinGW64. Windows 10.

$ gcc -v
Using built-in specs.
COLLECT_GCC=C:\msys64\mingw64\bin\gcc.exe
COLLECT_LTO_WRAPPER=C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/10.2.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../gcc-10.2.0/configure --prefix=/mingw64 --with-local-prefix=/mingw64/local --build=x86_64-w64-mingw32 --host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --with-native-system-header-dir=/mingw64/x86_64-w64-mingw32/include --libexecdir=/mingw64/lib --enable-bootstrap --with-arch=x86-64 --with-tune=generic --enable-languages=c,lto,c++,fortran,ada,objc,obj-c++,jit --enable-shared --enable-static --enable-libatomic --enable-threads=posix --enable-graphite --enable-fully-dynamic-string --enable-libstdcxx-filesystem-ts=yes --enable-libstdcxx-time=yes --disable-libstdcxx-pch --disable-libstdcxx-debug --disable-isl-version-check --enable-lto --enable-libgomp --disable-multilib --enable-checking=release --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --disable-plugin --with-libiconv --with-system-zlib --with-gmp=/mingw64 --with-mpfr=/mingw64 --with-mpc=/mingw64 --with-isl=/mingw64 --with-pkgversion='Rev9, Built by MSYS2 project' --with-bugurl=https://github.com/msys2/MINGW-packages/issues --with-gnu-as --with-gnu-ld --with-boot-ldflags='-pipe -Wl,--dynamicbase,--high-entropy-va,--nxcompat,--default-image-base-high -Wl,--disable-dynamicbase -static-libstdc++ -static-libgcc' 'LDFLAGS_FOR_TARGET=-pipe -Wl,--dynamicbase,--high-entropy-va,--nxcompat,--default-image-base-high' --enable-linker-plugin-flags='LDFLAGS=-static-libstdc++\ -static-libgcc\ -pipe\ -Wl,--dynamicbase,--high-entropy-va,--nxcompat,--default-image-base-high\ -Wl,--stack,12582912'
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 10.2.0 (Rev9, Built by MSYS2 project)

Can I resolve this problem.

[Biswa96]

What is the COM interface type?

[yuki-kimoto]

https://docs.microsoft.com/ja-jp/windows/win32/api/d2d1/nf-d2d1-id2d1rendertarget-getsize

ID2D1RenderTarget::GetSize method (d2d1.h)
D2D1_SIZE_F GetSize();

Maybe ID2D1RenderTarget interface

ID2D1RenderTarget interface (d2d1.h)

https://docs.microsoft.com/ja-jp/windows/win32/api/d2d1/nn-d2d1-id2d1rendertarget

[yuki-kimoto]

This is maybe the way to resolve this.

https://sourceforge.net/p/mingw-w64/mingw-w64/ci/ee9fc3d0b8c8868280e38384edd968067b8e71fc/

I define WIDL_EXPLICIT_AGGREGATE_RETURNS, but GetSize return wrong values.

[yuki-kimoto]

I'm creating browser using msys2 + MinGW64

Code is the following.

https://github.com/yuki-kimoto/cotton/blob/main/lib/Cotton/Runtime/Engine/Win.cpp#L132

[yuki-kimoto]

@Biswa96

[yuki-kimoto]

Sorry, this is my simple mistake. I output the values as int instead of float. so I got (0, 0).

Thank you.