Add libOpenGL to the list of libraries we'll intercept. This is harmless
if glvnd is not available as the dlopen(libOpenGL.so) will fail, but
without this we can't intercept glGetString, which the
egl_and_glx_different_pointers_glx test needs to be able to do.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Both gcc and clang define __ANDROID__ but not ANDROID when targeting Android so
at least with the Meson build, and an NDK r16 toolchain, testing on
Android failed without this change.
This avoids any unnecessary allocations when simply passing static strings
to be printed onto stderr, and uses the simpler fputs mechanism.
Signed-off-by: Ikey Doherty <ikey@solus-project.com>
This mutes compiler warnings for `dlwrap.c` by ensuring we actually check
the return status of the `asprintf` call. At this point in the test suite
our possible failure here is only memory, so we'll abort.
Signed-off-by: Ikey Doherty <ikey@solus-project.com>
The EGL_EXT_device_query extension introduces the
eglQueryDeviceStringEXT() function, which can be used with an
EGLDeviceEXT enumeration to receive an OpenGL extension string
containing all of the device extensions supported by it. From the
EGL_EXT_device_query spec's amendments to section "3.2 Devices" after
"3.1 Errors":
const char *eglQueryDeviceStringEXT(EGLDeviceEXT device,
EGLint name);
returns a pointer to a static, zero-terminated string describing
some aspect of the specified EGLDeviceEXT. <name> must be
EGL_EXTENSIONS.
Since OpenGL extension parsing is rather simple, and we could always run
into additional cases similar to this one in the future, we expose the
shared epoxy_extension_in_string() function in libepoxy's public headers
so that users can save themselves the hassle of having to write their
own extension parser.
Signed-off-by: Lyude Paul <thatslyude@gmail.com>
This code attempts not to dlopen anything if it can find the appropriate
winsys symbols in the global namespace. That's nice. However we normally
do dlopen(RTLD_LOCAL) when we open lib{GLX,EGL} so those symbols will
_not_ in fact be in the global namespace. The code also prefers checking
GLX to EGL, which means even if we initialize EGL through epoxy, and
even if we're using glvnd, we'll still dlopen libGL the first time we
hit epoxy_is_desktop_gl().
There's a couple of ways to skin this cat, let's take the easy one. If
either-but-not-both of the glx or egl handles in the global API state
are initialized, then we know we're already in one or the other. If
neither or both are initialized, then the current heuristic should work
fine.
Note that epoxy_is_desktop_gl() is only bothering to check for GLX to
work around PowerVR's broken GLES. One suspects a better way to do that
would be to check GL_VENDOR or GL_RENDERER and avoid probing the window
system at all.
Signed-off-by: Adam Jackson <ajax@redhat.com>
The EGL API update from d11104f2b5 introduced a dependency on the
EGL_CAST() macro, provided by an updated eglplatform.h. Given that we
don't provide eglplatform.h, add a fallback definition for if we're
building against Mesa 17.0.x or similar.
https://bugs.gentoo.org/show_bug.cgi?id=623926
glvnd has the rather nice property that GLX and (desktop) GL are
available in separate libraries. As an example this would allow an EGL
app to use desktop GL without any X11 libraries. Fix up our dlopens to
prefer the glvnd libraries if available and fall back to the old ABI if
not.
Signed-off-by: Adam Jackson <ajax@redhat.com>
It is perfectly possible to build Mesa3D with just OpenGL support, and
use with GLX in X.org, without having EGL/OpenGLES support.
However, libepoxy currently unconditionally requires EGL support in its
configure.ac, which causes a build failure when Mesa3D only provides
full OpenGL support:
checking for EGL... no
configure: error: Package requirements (egl) were not met:
Package egl was not found in the pkg-config search path.
Perhaps you should add the directory containing `egl.pc'
to the PKG_CONFIG_PATH environment variable
Package 'egl', required by 'world', not found
This commit fixes that by:
- Adjusting the configure.ac to add a --{enable,disable}-egl option
handled in the exact same way as --{enable,disable}-glx
- Adjusting the meson build logic in the same way.
- Adjusting src/dispatch_common.h to define PLATFORM_HAS_EGL correctly,
which allows to not include any EGL related header file if EGL
support is not enabled.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
We can build Epoxy with different compilers on Linux, and they may not
support all the linker flags we wish to use, so we should check whether
or not they exist.
Related commit: b3b8bd9af7
Fix "epoxy_glx_version" to handle the case when GLX is not active on the display.
Patch is tweak from the original version posted by Tom Horsley
Emmanuele Bassi
Adam Jackson
Robert Bragg
Ikey Doherty
Dylan Baker
danem
Emmanuele Bassi
Nigel Stewart
Lyude Paul
Daniel Stone
Tom Schoonjans
Joseph C, Hill
Thomas Petazzoni
Gianfranco Costamagna