* rsx: Add code to detect instanced draw commands
* rsx: Add GLSL support for instanced rendering
* rsx: Move draw call related functions to their own class
* rsx: Move more functions from rsx thread to the draw command processor
* rsx: Fix vertex program compiler crash
* vk: Add support for hardware instanced draws
* rsx: Fix instancing bug when indexed addressing is used to read constants
* rsx: Fix rare crash in vertex program decompiler
- This whole decompiler mess needs a rewrite
* rsx: Handle dangling execution barriers
* rsx: Do not use global registers object in logical "firmware" units
* Cosmetic improvements
* rsx: Test vertex program flags on each draw
* rsx: Properly track changes in instancing state
Replaces `std::shared_pointer` with `stx::atomic_ptr` and `stx::shared_ptr`.
Notes to programmers:
* This pr kills the use of `dynamic_cast`, `std::dynamic_pointer_cast` and `std::weak_ptr` on IDM objects, possible replacement is to save the object ID on the base object, then use idm::check/get_unlocked to the destination type via the saved ID which may be null. Null pointer check is how you can tell type mismatch (as dynamic cast) or object destruction (as weak_ptr locking).
* Double-inheritance on IDM objects should be used with care, `stx::shared_ptr` does not support constant-evaluated pointer offsetting to parent/child type.
* `idm::check/get_unlocked` can now be used anywhere.
Misc fixes:
* Fixes some segfaults with RPCN with interaction with IDM.
* Fix deadlocks in access violation handler due locking recursion.
* Fixes race condition in process exit-spawn on memory containers read.
* Fix bug that theoretically can prevent RPCS3 from booting - fix `id_manager::typeinfo` comparison to compare members instead of `memcmp` which can fail spuriously on padding bytes.
* Ensure all IDM inherited types of base, either has `id_base` or `id_type` defined locally, this allows to make getters such as `idm::get_unlocked<lv2_socket, lv2_socket_raw>()` which were broken before. (requires save-states invalidation)
* Removes broken operator[] overload of `stx::shared_ptr` and `stx::single_ptr` for non-array types.
When blending a source pixel with alpha less than 1 onto a texture, we will end up having even less alpha than before.
This can lead to ugly "holes" in the overlays, especially on the edges of glyphs with smooth fonts for example.
We can fix this by only blending the RGB values while keeping the destination's alpha value.
I haven't really seen this happen in RPCS3, but it's better to be safe than sorry.
