[Bug 80349] [Regression][Bisected] Choppy fullscreen using OpenGL with compositor

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80349

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |NOTOURBUG

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
Kwin makes a buggy micro-optimisation:

diff --git a/kwin/libkwineffects/kwinglplatform.cpp
b/kwin/libkwineffects/kwinglplatform.cpp
index ae2f459..c41b9df 100644
--- a/kwin/libkwineffects/kwinglplatform.cpp
+++ b/kwin/libkwineffects/kwinglplatform.cpp
@@ -808,7 +808,6 @@ void GLPlatform::detect(OpenGLPlatformInterface
platformInterface)
             m_supportsGLSL = false;

         m_limitedGLSL = m_supportsGLSL && m_chipClass < I965;
-        m_looseBinding = true;

         if (m_chipClass < I915) {
             m_recommendedCompositor = XRenderCompositing;

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