[Impeller] Force fallback to OpenGL ES on Android versions < 29. #132984
Description
We want to force Android versions less than API 29 to use OpenGL due to the lack of API that allow us to support platform views with Vulkan. This check has not been added in code yet. The step is highlighted below:
flowchart TD
start[Start]
android_api{Check Android API}
device_support{Device Supports Vulkan}
vulkan_version{Vulkan Version Check}
vulkan_exts{Vulkan Supports Extensions}
vulkan[Use Vulkan Backend]
opengl[Use OpenGL Backend]
style android_api color:red
start-->device_support
device_support-->|Yes|android_api
device_support-->|No|opengl
android_api-->|>= Android 29|vulkan_version
android_api-->|< Android 29|opengl
vulkan_version-->|>= Vulkan 1.1|vulkan_exts
vulkan_version-->|< Vulkan 1.1|opengl
vulkan_exts-->|Supports Extensions|vulkan
vulkan_exts-->|Doesn't Support Extensions|opengl