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Wayland: Fix window opacity on older systems

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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
This commit is contained in:
Camilla Löwy
2022-07-25 20:33:47 +02:00
parent c18851f52e
commit ef6c9d8b4f
4 changed files with 31 additions and 0 deletions
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CONTRIBUTORS.md
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@@ -185,6 +185,7 @@ video tutorials.
- pthom
- Martin Pulec
- Guillaume Racicot
- Christian Rauch
- Philip Rideout
- Eddie Ringle
- Max Risuhin