The sign bit on integers of size < 32 was not properly preserved in casts

BitCast U32 to S32 before converting to float on drivers with broken
signed operations.

Fixes black textures in UE4 games

Fixes DOOM 2016 missing local memory

Fixes SULD.D tests.

Fixes pixelated presentation on Intel devices.

Used by Claybook.

Fixes a crash on Age of Calamity cutscenes.

Increases performance significantly on certain titles.

MSVC generates better code for it.

Recreate only when requested (or sRGB is changed) instead of tracking
the frontend's size. That size is still used as a hint.

"Negative" offsets don't exist. They are shown as such due to a bug in
nvdisasm.

Unaligned offsets have been proved to read the aligned offset. For
example, when reading an U32, if the offset is 6, the offset read will
be 4.

Add support for Polaris AMD devices.

Intel devices pre-Xe don't support this.

Fixes Ori and the Blind Forest's menu on GLASM. For some reason
(probably high level optimizations) it is not sanitized on SPIR-V for
OpenGL. Vulkan is unaffected by this change.

Fixes ubsan issue.