Set USE_CTRULIB_2=1 to build with libctru 2.0. When unset, this code
is compatible with the older toolchain.
Some 2.0 changes addressed rare problems in earlier versions:
- Save / restore stack pointer for init / exit
Otherwise, it could be outside of the range we deallocate.
- Run aptMainLoop in the audio driver to react correctly to sleep events
Other changes for 2.0:
- Remove ninjhax1 -- requires outdated APIs that have been removed
- Switch from __sync_arbiter to syncArbitrateAddress
- Use implicit gxCmdBuf
- Use gpuPresentBuffer for double buffering
- Revert odroidgo changes to drm_ctx
- Introduce new drm_go2_ctx specifically for odroidgo2 (and libgo2)
- Add hw_scaling option to mitigate builtin gl scaling/filtering and to
use libgo2 and rga's hw scaling and bicubic filtering via librga. The
quality of the image is improved by this and should be a bit faster.
Credits to CrashOverride for the initial libgo2 port and
commit to RA. And to natinusala for the initial cleanup/commit in the original
drm_ctx driver. NOirBRight for finding this setting and testing.
When the 3DS wakes back up after being closed, the bottom screen needs
to be reinitialized. Adding the condition here will cause the screen
to be turned on or off based on the state of
ctr_bottom_screen_enabled, as you'd expect.
On the 3DS, for some cores, the screen will flicker if OSD is enabled,
and sometimes when going in and out of the menu.
As far as I can tell, this happens when a frame is dup'd, and we send
0x0 as the frame to the gfx driver. When that happens, we still draw
the OSD, using a vertex shader to transform and render it at the right
size.
When the frame is 0x0, though, the vertex shader uniforms are never
_reset_ to redraw the previous frame, so it's drawn with different
params, and gets drawn the wrong size. It will draw as the correct
size when the correct vertex shader uniforms are set, and the
incorrect size when the incorrect uniforms are set, causing
flickering.
At least, that's what I think is happening. Forcing the vertex shader
to be set regardless of whether the frame data is set fixes it, at
least during some light testing with PCSX.
