* [shaderc] Add SPIR-V profiles to support Vulkan 1.1 and Vulkan 1.2.
* * Add support for Vulkan 1.1 with SPIR-V 1.4.
* Update "spirv" values to correlate with shaderc spirv profile name mappings.
* Expand on spirv profile naming and encoding documentation.
* Address PR notes
* [vulkan] Vulkan API auto-selection for latest available.
- Selects for the maximum vulkan API version available on the host's vulkan driver for a created instance.
- Stores the created instance's vulkan API version on RendererContextVK.
- Created instance's vulkan API version dumped using BX_TRACE in MAJOR.MINOR.PATCH format.
- Physical Device's vulkan API version dumped in MAJOR.MINOR.PATCH format.
* Address code review notes.
- Actually use `vkEnumerateInstanceVersion` if it exists.
- Remove "bgfx supported" vulkan api static array.
* D3D12: Fix readback for non-zero mip
* Fix blit with non-zero mip
This required clamping the blit extents to the mip size, which is moved out of the renderers now
* Assert formatting
* Adds UAV support for D3D12, Vulkan and reworked support for OpenGL, D3D11
UAV support is now uniform across compute and draw.
To set a UAV you just use bgfx::setImage() and IMAGE2D in the shader, just like in compute.
Due to these changes shaders will have to be recompiled.
The changes include:
- D3D11 requires patching of the UAV slot number (which is now done by modifying the DXBC instead of using a macro)
- If the DXBC binary includes a debug chunk, that is also patched to match the new slot number
- All the other renderers don't need any kind of patching
- There are some shader annotations to better convert the UAV format used in hlsl to spirv
Possibility of further enhancements:
- bgfx::setViewFrameBuffer() only supports binding to a framebuffer or, using BGFX_INVALID_HANDLE, to bind the default backbuffer. This doesn't allow for the case where there is no need to bind to either one of them, for example when using a fragment shader only to read and write to an UAV.
* Bump shader version, because they need to be recompiled.
