This extends the check_enabled function to be able to check more than
one feature. In the case of RPNG it depends on either the builtin or
system zlib, but if the system zlib was not available while the builtin
zlib was it would still be disabled erroneously.
Now it will only be disabled if both the system and builtin zlib are
disabled.
Some systems may have egl libraries, but not egl headers which
will result in failing to build EGL support.
Also OpenGLES2 also required EGL support so lets make that clear.
This allows enabling and disabling features for platforms
more robustly.
Fixes https://github.com/libretro/RetroArch/issues/8777
v2: Fix D3D configure checks.
v3: Cleanup.
v4: Update Makefile.msvc and Makefile.win
This is the correct change to prefer the builtin zlib.
Revert "(QB) Bake in zlib by default, make zlib as dynamic library dependency"
This reverts commit 2713e792ca.
Revert "(QB) Change behavior - if HAVE_ZLIB = no, that doesn't mean"
This reverts commit f66fe5e16b.
HAVE_BUILTINZLIB will also be set to no implicitly. It will still
try to use the baked in zlib. If you want to build without any zlib
support entirely, you now need to do this -
./configure --disable-zlib --disable-builtinzlib
* qb: Fix OpenGLES build.
The gl core video driver requires at least OpenGLES 3 and
OpenGL 1 is not compatible with OpenGLES 2 or 3.
* travis: Test OpenGLES builds on linux.
Menu widgets must also be disabled with --disable-menu, now
configure will do so or error if --disable-menu and
--enable-menu_widgets are explicitly used.
This driver should sunset the old gl2 driver, but that driver will
likely live on to support really ancient and terrible GL stacks.
All the worst legacy cruft has been ripped out, and it's almost a decent
backend now.
Requirements for slang are GL 3.2+ or GLES3.
Some shaders require features which are not directly compatible with
GLES2 or legacy GL.
This driver shares a lot of concepts from the Vulkan driver.
The slang shader stack and SPIRV-Cross are used to implement the shader
spec, and the menu shaders are also shared with Vulkan.
