Filament keeps a global static list of engines for verification purposes
which was being recreated multiple times, causing a panic. After a lot
of experimentation with the build, I was not able to fix this while
keeping the current scheme of dynamically loading both libraries.
As a "solution", we now staticly link filament into gltfio-jni, and ask
clients to load only that.
Fixes#1811.
* Lower limit from API 21 to API 19
This was requested by an internal application. API 19 is when OpenGL
ES 3.0 support was added so there is no good reason for us to not
support this API level. The only trick is to avoid referring to the
glTexStorage2DMultisample symbol directly as it only exists in 3.1.
* Compile out code we never use
* Use reflection to handle shared EGL contexts pre-API 21.
* Remove comment
* More fixes required to run on API level 19
- dlym() fails for ashmem on API 19, so we only try on API 26+ instead.
- Older emulation for OpenGL ES 3.0 returns error states for valid API calls so we need to clear the GL error bit before we create the GL driver.
- Activity lifecycle changes since API 19 would cause animations to keep running and to reference destroyed objects.
- EGLContext.getNativeHandle() is new in API 21, we need to use reflection on API 19. The new code path uses the class loading trick to avoid a bytecode verification error on API 19.
* Filament now runs properly on API level 19
This commit adds a new api_level() API to libutils which can be used to
query the platform's API level. On Android it works as expected, other
platforms currently return 0.
(1) Sometimes (but not always!) gltfio-android was failing to build due
to two missing ANativeWindow functions. Linking in "android" seems to
fix this, and is consistent with libfilament-jni.
(2) Improve our "build.sh -c" utility by clobbering some additional
Android build directories. This is especially useful after
adding "-Pextra_cmake_args=-DFILAMENT_SUPPORTS_VULKAN=ON", otherwise
Gradle will try to use a cached CMake configuration.
* Make CMake 3.10 the minimum version, add LTO option
* Install a newer CMake on Linux CI builds
* Update LLVM and Cmake on Windows CI
* Update build/windows/ci-common.bat
Co-Authored-By: Ben Doherty <benjdoherty15@gmail.com>
* Update formatting
* Apply suggestions from code review
* Update build/windows/ci-common.bat
* Update CMake
* Switch Android projects back to CMake 3.6
For now this uses gltfio in the ubershader configuration in order
to avoid the filamat dependency. Note that we have not yet done a size
analysis of the `gltfio_core` library.
New Kotlin-based sample app is forthcoming.
