On systems lacking the EGL_EXT_present_opaque extension, some
compositors treat any buffer with an alpha channel as per-pixel
transparent.
This commit ignores any EGLConfig with an alpha channel if the extension
is missing and the window is created with GLFW_TRANSPARENT_FRAMEBUFFER
set to false.
This is technically not a breaking change since GLFW_ALPHA_BITS is not
a hard constraint, but it is still going to inconvenience anyone using
the framebuffer alpa channel to store other kinds of data.
Related to #1895
(cherry picked from commit ef6c9d8b4f)
This fixes spelling, grammar and punctuation issues, missing words and
stray words across the documentation. A confusing sentence was removed
from the tutorial.
Closes#2085
(cherry picked from commit 2e12ef00bb)
There is a seemingly unavoidable race condition when waiting for data on
the X11 display connection, as long as any other thread is also making
Xlib calls. The event data we are waiting for could be read by the
other thread as part of looking for the reply to its request, before our
poll has begun.
This commit replaces the X11 event sent by glfwPostEmptyEvent with
writing to an unnamed pipe. The race condition remains if other Xlib
calls are made on other threads, but glfwPostEmptyEvent should now be
race-free.
This commit is based on work by pcwalton, OlivierSohn, kovidgoyal and
joaodasilva.
Closes#2033
Related to #379
Related to #1281
Related to #1285
(cherry picked from commit cd22e28495)
In the compile guide, the "Dependencies for Linux and OSMesa" section
looks to be one level too high in the hierarchy. I've moved it to be in
line with the similarly-named sub-sub-sections.
Closes#1923.
(cherry picked from commit 52d8347d34)
Some URLs in the documentation were overlooked during the switch to
https: for the GLFW website. This updates those and a few third-party
URLs.
(cherry picked from commit 787295b3af)
The `#glfw` IRC channel is moving to the Libera.Chat network due to the
recent takeover of the Freenode network.
(cherry picked from commit 78380c7761)
New code should use GL_KHR_debug instead but it's not as good an example
to use in this case as the symbols it adds has no suffixes.
(cherry picked from commit ec621a00bd)
This makes USE_MSVC_RUNTIME_LIBRARY_DLL update the directory scope
CMAKE_MSVC_RUNTIME_LIBRARY variable instead of CMAKE_C_FLAGS on CMake
3.15 and later.
Solution proposed by @moritz-h.
Fixes#1783.
Closes#1796.
(cherry picked from commit f4a7329604)
On Windows 7, when GLFW framebuffer transparency and the DWM are enabled
but DWM transparency is disabled (i.e. when the Transparency setting is
disabled under Personalization > Color), the contents of the framebuffer
is combined with the last frame using additive blending instead of
replacing the previous contents.
This commit limits GLFW framebuffer transparency on Windows 7 to when
DWM transparency is enabled, removing the previous workaround of setting
a layered window color key that led to rendering artifacts.
Fixes#1512.
(cherry picked from commit 05dd2fa298)
Re-worded documentation for the `GLFW_OPENGL_DEBUG_CONTEXT` window hint
to avoid implying that it only applies to OpenGL contexts. Added a link
to the relevant Khronos extension description.
Closes#1720.
(cherry picked from commit 8a69a0d7e5)
The documentation claims that any extension loader library header
included before the GLFW one will prevent the inclusion of the
default OpenGL header. In reality this only worked if the loader
defined the canonical desktop OpenGL __gl_h_ inclusion guard and even
then relied on the OpenGL header to detect this.
This is the companion to 105cf32e0b, which
added the preprocessor logic to check for many known OpenGL and OpenGL
ES inclusion guards and not even attempt to include the default header
if any are present.
Some clarification of the language around header inclusion has also been
attempted, including making GLFW_INCLUDE_NONE more prominent.
Fixes#1695.
(cherry picked from commit 399c2a1fad)
This removes most references to GLU, replaces the legacy CMake cache
variables for OpenGL with the modern namespaced target and switches to
$() for command substitution.
Fixes#1580.
(cherry picked from commit d973acc123)
This removes the final dependency on CoreVideo, using a display link to
get the refresh rate of monitors where Core Graphics report a refresh
rate of zero. Instead we now query the I/O registry directly, similarly
to what the display link does at creation.
Thanks to @OneSadCookie for pointers to this solution.
(cherry picked from commit 4ec7daf3e9)
This is a temporary fix while we determine if the color key workaround
should be removed completely. See issue thread for discussion.
Related to #1512.
(cherry picked from commit c88ee1c9d3)
