These changes originate from testing the behaviour of the PI registers
in Linux on my Wii.
I started by testing the masks, writing 0xFFFF_FFFF to the registers on
the Wii, and then got told about their value on a GameCube, and then
figured out most of the registers through a discussion with Extrems.
EGL is the de-facto GL context initialization API, including on X11
where it provides many additional features over GLX.
I’m planning on adding support for selecting the GPU (adapter in
Dolphin-speak) also to OpenGL, similarly to the Vulkan backend, and that
will require EGL, so let’s remove the legacy API first.
This moves the only direct call to zlib’s crc32() into its own
translation unit, but that operation is cold enough that this won’t
matter in the slightest. crc32_z() would be more appropriate, but
Android has an older zlib version…
This fixes the rendering of the scan visor in Metroid Prime 2: Echoes,
as seen in https://fifoci.dolphin-emu.org/dff/mp2-scanner/
The alpha channel was off-by-one on Ivy Bridge due to the rounding
after multiplication with colmat. This commit removes this matrix
altogether in most cases, making them simple GLSL swizzles.
They are already disabled when the libraries can’t be found, this only
helps people who want to build without them despite having them
installed, for example to provide a package to someone else.