* Add 'frameNumber' to Frame struct
Previously, the frame number returned from bgfx::frame() was tracked separately in the Context. Now,
we store that information in the Frame. This will allow us to attach the frame number to ViewStats.
* Add frame number to ViewStats
When ViewStats are enabled, we tag each timer query with the current frame number, then include
that information in the final results. In this way, clients can correlate specific work that they
submitted to specific GPU timing information.
NOTE: Some backends not implemented, yet. They will always have 0 for frame number.
The ones which are implemented are:
* OpenGL
* Vulkan
* D3D 9,11,12
* Noop
* Don't enable optional extensions if BGFX_CONFIG_RENDERER_USE_EXTENSIONS is 0
* Support rendering to slices of 3D textures
* Create transient command pool
* Blit array layers for non-cube textures
* Clean up destroy and release functions
Simplifies CommandQueueVK code, automatically sets handles to NULL after release(), removes the need for explicit StateCacheT instantiations, and enables usage of StateCacheLru
* Fix renderpass hash calculation
* Allow sampling cube array textures
* Make StateCacheLru work with types overloading the address-of operator
* Alias textures to shader sampler type
Requires shaders with shaderc binary version 8 or higher
* Fix 32-bit compilation
* view stats: Make GPU begin and end times available
* view stats: Make CPU start and end times available
* view stats: Remove redundant `gpuTimeElapsed`
Value can be derived by `gpuTimeEnd - gpuTimeBegin`
* view stats: Remove redundant `cpuTimeElapsed`
Value can be derived by `cpuTimeEnd - cpuTimeBegin`
