This will generate one shader per copy format. For now, it is the same
shader with the colmat hard coded. So it should already improve the GPU
performance a bit, but a rewrite of the shader generator is suggested.
Half of the patch is done by linkmauve1:
VideoCommon: Reorganise the shader writes.
Currently, a simple typo in the system name will trigger an assert
message that complains about a "programming error". This is not
user friendly and misleading.
So this changes GetSystemFromName to return an std::optional, which
allows for callers to check whether the system exists and handle
failures better.
Manually convert each argument to a UTF-8 std::string, because the
implicit conversion for wxCmdLineArgsArray to char** calls ToAscii
(which is obviously undesired).
Fixes https://bugs.dolphin-emu.org/issues/10274
Also skips swapping the window system buffers in headless mode, as there
may not be a surface which can be swapped in the first place. Instead,
we call glFlush() at the end of a frame in this case.
Cel-damage uses the color from the lighting stage of the vertex pipeline
as texture coordinates, but sets numColorChans to zero.
We now calculate the colors in all cases, but override the color before
writing it from the vertex shader if numColorChans is set to a lower value.
This was causing an issue where DolphinQt couldn't save graphics options
(DolphinWX doesn't hit this code path), because this function was being
called before the in-memory config was flushed to disk.
With this PR, the in-memory config isn't reset, and only SYSCONF-related
variables may get changed.
7f0834c9 moved the locations of the Real XFB (now XFB to RAM) and
Disabled XFB (now Immediate Mode) settings. There are programs
other than Dolphin that parse DTM headers, so this is not good.
Note that Immediate XFB actually is the inversion of Disabled XFB.
I hope that's not too much of a problem...
All file scope variables are able to be made internally linked.
CD3DFont is essentially used as an extension to the utility interface, so
this is able to be made internal as well, removing a global from
external view.
