gl_rasterizer: Implement a more accurate fermi 2D copy.

nvdisp_disp0: change drawing message log level from Warning to Trace

gl_rasterizer_cache: Fixup texture view parameters

These parameters were declared as constants and passed to glTextureView
but then they were removed on a rabase. This addresses that mistake.

This is a leftover from the early yuzu days.
We shouldn't log every time when we are drawing by default, so let's change the log level to Trace.

shader/track: Add a more permissive global memory tracking

- This is a blit, use the blit registers.

Port citra-emu/citra#4603: "gdbstub: only let Execute breakpoints write/restore BKPT opcodes into target memory"

gl_shader_cache: Disk based shader cache

Co-Authored-By: ReinUsesLisp <reinuseslisp@airmail.cc>

Co-Authored-By: ReinUsesLisp <reinuseslisp@airmail.cc>

Co-Authored-By: ReinUsesLisp <reinuseslisp@airmail.cc>

Co-Authored-By: ReinUsesLisp <reinuseslisp@airmail.cc>

i965 (and probably all mesa drivers) require GL_PROGRAM_SEPARABLE when using
glProgramBinary. This is probably required by the standard but it's ignored by
permisive proprietary drivers.