Methane Kit v0.7.0: Add iOS and tvOS platforms support

egorodet commented 2 years ago

Platform libraries:
- Methane::Platform::AppIOS implementation was added to support iOS and tvOS mobile platforms (closed #12).
- iOS Alert window implementation was added.
- Limited input support was added for iOS to translate touches to mouse events (keyboard input is not supported).
- Moved RenderContext::GetContentScalingFactor and RenderContext::GetFontResolutionDpi methods Platform::IApp interface with platform dependent implementations. Linux implementation for X11 was added.
Graphics libraries:
- Manual memory management was removed from Objective-C Metal graphics implementation due to switching to ARC (automatic reference counting).
- RenderCommandList::Draw and DrawIndexed calls implementation for Metal was changed to not exclude using of start_vertex and start_instance parameters for GPU Family < MTLGPUFamilyApple3 or MTLGPUFamilyMac2, which is essential for working on iOS Simulators.
- Unsupported Sampler parameters were put under #ifdef APPLE_MACOS to enable tvOS support.
- Fixed flipping camera projection up-side-down in portrait orientation.
Tutorials applications:
- Customised default UI options to make HUD visible by default on iOS.
- Added iOS screenshots for tutorials.
- Added keyboards shortcuts for tutorials in README files.
- Known issue: #101
Tests infrastructure:
- Add missing test targets to GCov coverage on Ubuntu.
Build infrastructure:
- Added Externals/iOS-Toolchain.cmake file from iOS-CMake project to enable iOS & tvOS build configuration.
- Apple Clang is now used with ARC enabled (automatic reference counting) via -fobjc-arc option.
- Split MacOS and iOS application .plist configs generation via CMake/MethaneApplication.cmake
- Split CMake/MethaneGlobalOptions.cmake from CMake/MethaneBuildOptions.cmake to allow including it in the root CMakeLists of external projects to properly set global CMake options.
- Add support for Apple code signing via APPLE_DEVELOPMENT_TEAM cmake option.
- Extended Build/Unix/Build.sh script to support iOS / tvOS builds via new command-line arguments --apple-platform, --apple-dev-team and --apple-deploy-target.
- Added iOS and tvOS Simulator builds in Azure Pipelines.
- Added CLion cmake configurations for iOS and tvOS.
- Added iOS and tvOS build instructions to Build/README.md.