From 7518adbb131ac05fe4e96880e47adcf35fc1c040 Mon Sep 17 00:00:00 2001
From: Gunnar Sletta <gunnar.sletta@nokia.com>
Date: Tue, 31 Jan 2012 09:14:52 +0100
Subject: [PATCH] Introduced BufferQueueingOpenGL capability in platofrm
 integration
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Change-Id: Iedb7255862fd3a11aceae0e06e90a5539febc7e7
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
---
 src/gui/kernel/qplatformintegration_qpa.cpp      | 21 +++++++++++++++++++++
 src/gui/kernel/qplatformintegration_qpa.h        |  4 +++-
 src/plugins/platforms/cocoa/qcocoaintegration.mm |  1 +
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/src/gui/kernel/qplatformintegration_qpa.cpp b/src/gui/kernel/qplatformintegration_qpa.cpp
index ec9a7fc..e867e4e 100644
--- a/src/gui/kernel/qplatformintegration_qpa.cpp
+++ b/src/gui/kernel/qplatformintegration_qpa.cpp
@@ -172,6 +172,27 @@ QPlatformNativeInterface * QPlatformIntegration::nativeInterface() const
 */
 
 /*!
+    \enum QPlatformIntegration::Capability
+
+    Capabilities are used to determing specific features of a platform integration
+
+    \value ThreadedPixmaps The platform uses a pixmap implementation that is reentrant
+    and can be used from multiple threads, like the raster paint engine and QImage based
+    pixmaps.
+
+    \value OpenGL The platform supports OpenGL
+
+    \value ThreadedOpenGL The platform supports using OpenGL outside the GUI thread.
+
+    \value SharedGraphicsCache The platform supports a shared graphics cache
+
+    \value BufferQueueingOpenGL The OpenGL implementation on the platform will queue
+    up buffers when swapBuffers() is called and block only when its buffer pipeline
+    is full, rather than block immediately.
+ */
+
+
+/*!
 
     \fn QAbstractEventDispatcher *QPlatformIntegration::guiThreadEventDispatcher() const = 0
 
diff --git a/src/gui/kernel/qplatformintegration_qpa.h b/src/gui/kernel/qplatformintegration_qpa.h
index f3dc430..efaf495 100644
--- a/src/gui/kernel/qplatformintegration_qpa.h
+++ b/src/gui/kernel/qplatformintegration_qpa.h
@@ -74,7 +74,9 @@ public:
         ThreadedPixmaps = 1,
         OpenGL = 2,
         ThreadedOpenGL = 3,
-        SharedGraphicsCache = 4
+        SharedGraphicsCache = 4,
+        BufferQueueingOpenGL = 5
+
     };
 
     virtual ~QPlatformIntegration() { }
diff --git a/src/plugins/platforms/cocoa/qcocoaintegration.mm b/src/plugins/platforms/cocoa/qcocoaintegration.mm
index 3abfe2c..fb8e487 100644
--- a/src/plugins/platforms/cocoa/qcocoaintegration.mm
+++ b/src/plugins/platforms/cocoa/qcocoaintegration.mm
@@ -150,6 +150,7 @@ bool QCocoaIntegration::hasCapability(QPlatformIntegration::Capability cap) cons
     case ThreadedPixmaps: return true;
     case OpenGL : return true;
     case ThreadedOpenGL : return true;
+    case BufferQueueingOpenGL: return true;
     default: return QPlatformIntegration::hasCapability(cap);
     }
 }
-- 
2.7.4