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From 4d47891ca1f3979c20f0acc3539a80d8fa97a2ad Mon Sep 17 00:00:00 2001
From: ninja- <ninja-@users.noreply.github.com>
Date: Tue, 30 Jun 2020 19:41:52 +0200
Subject: [PATCH 4/4] fix broken opengl screenshots on mutter
(admicos) This breaks more than just screenshots. On sway, the window is
rendered half transparent. And we do not want that.
---
src/egl_context.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/egl_context.c b/src/egl_context.c
index 975c67be..b5cbeaff 100644
--- a/src/egl_context.c
+++ b/src/egl_context.c
@@ -175,6 +175,14 @@ static GLFWbool chooseEGLConfig(const _GLFWctxconfig* ctxconfig,
u->samples = getEGLConfigAttrib(n, EGL_SAMPLES);
u->doublebuffer = desired->doublebuffer;
+#if defined(_GLFW_WAYLAND)
+ // Avoid using transparent buffer on Wayland if transparency is not requested.
+ // Otherwise mutter will fail to properly screenshot OpenGL content.
+ if (u->alphaBits > 0 && !desired->transparent) {
+ continue;
+ }
+#endif // _GLFW_WAYLAND
+
u->handle = (uintptr_t) n;
usableCount++;
}
--
2.32.0
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