vcl/inc/openglgdiimpl.hxx | 2 +-
vcl/inc/svdata.hxx | 1 +
vcl/opengl/gdiimpl.cxx | 44 +++++++++++++++++++++++++++-----------------
vcl/source/app/svdata.cxx | 19 ++++++++++---------
4 files changed, 39 insertions(+), 27 deletions(-)
New commits:
commit 2a27d83ad8b2cab3af86624f58c183f78c2a67b8
Author: Michael Meeks <michael.me...@collabora.com>
Date: Thu Dec 10 18:31:04 2015 +0000
vcl: opengl - lean on the default window's context much more.
Avoid creating our own OpenGLContext to render until we need to
refresh the screen. Also always re-use context from default window.
This simplifies our OpenGL Context use significantly, and avoids
problems with the initial default context getting destroyed in
some cases.
Change-Id: Ic2239236d3e1f14fd27979c9aab85efd84e6b760
Reviewed-on: https://gerrit.libreoffice.org/20853
Tested-by: Jenkins <c...@libreoffice.org>
Reviewed-by: Caolán McNamara <caol...@redhat.com>
Tested-by: Caolán McNamara <caol...@redhat.com>
diff --git a/vcl/inc/openglgdiimpl.hxx b/vcl/inc/openglgdiimpl.hxx
index 3e5ec94..c4fa5c2 100644
--- a/vcl/inc/openglgdiimpl.hxx
+++ b/vcl/inc/openglgdiimpl.hxx
@@ -158,7 +158,7 @@ public:
void PostDraw();
protected:
- bool AcquireContext();
+ bool AcquireContext(bool bForceCreate = false);
bool ReleaseContext();
/// retrieve the default context for offscreen rendering
diff --git a/vcl/inc/svdata.hxx b/vcl/inc/svdata.hxx
index 46527f0..b559cf3 100644
--- a/vcl/inc/svdata.hxx
+++ b/vcl/inc/svdata.hxx
@@ -357,6 +357,7 @@ struct ImplSVData
void ImplDeInitSVData();
VCL_PLUGIN_PUBLIC vcl::Window* ImplGetDefaultWindow();
+VCL_PLUGIN_PUBLIC vcl::Window* ImplGetDefaultContextWindow();
VCL_PLUGIN_PUBLIC ResMgr* ImplGetResMgr();
VCL_PLUGIN_PUBLIC ResId VclResId( sal_Int32 nId ); // throws std::bad_alloc if
no res mgr
DockingManager* ImplGetDockingManager();
diff --git a/vcl/opengl/gdiimpl.cxx b/vcl/opengl/gdiimpl.cxx
index ba480f2..a5cec8a 100644
--- a/vcl/opengl/gdiimpl.cxx
+++ b/vcl/opengl/gdiimpl.cxx
@@ -92,7 +92,7 @@ OpenGLSalGraphicsImpl::~OpenGLSalGraphicsImpl()
rtl::Reference<OpenGLContext> OpenGLSalGraphicsImpl::GetOpenGLContext()
{
- if( !AcquireContext() )
+ if( !AcquireContext(true) )
return nullptr;
return mpContext;
}
@@ -102,7 +102,7 @@ rtl::Reference<OpenGLContext>
OpenGLSalGraphicsImpl::GetDefaultContext()
return ImplGetDefaultWindow()->GetGraphics()->GetOpenGLContext();
}
-bool OpenGLSalGraphicsImpl::AcquireContext( )
+bool OpenGLSalGraphicsImpl::AcquireContext( bool bForceCreate )
{
ImplSVData* pSVData = ImplGetSVData();
@@ -121,6 +121,8 @@ bool OpenGLSalGraphicsImpl::AcquireContext( )
mpContext.clear();
}
+ // We don't care what context we have - but not switching context
+ // is rather useful from a performance perspective.
OpenGLContext *pContext = pSVData->maGDIData.mpLastContext;
while( pContext )
{
@@ -134,7 +136,12 @@ bool OpenGLSalGraphicsImpl::AcquireContext( )
mpContext = pContext;
else if( mpWindowContext.is() )
mpContext = mpWindowContext;
- else
+ else if( bForceCreate && !IsOffscreen() )
+ {
+ mpWindowContext = CreateWinContext();
+ mpContext = mpWindowContext;
+ }
+ if( !mpContext.is() )
mpContext = GetDefaultContext();
return mpContext.is();
@@ -175,11 +182,10 @@ void OpenGLSalGraphicsImpl::Init()
VCL_GL_INFO("::Init - re-size offscreen texture");
}
- if( !IsOffscreen() )
+ if( mpWindowContext.is() )
{
- if( mpWindowContext.is() )
- mpWindowContext->reset();
- mpWindowContext = CreateWinContext();
+ mpWindowContext->reset();
+ mpWindowContext.clear();
}
}
@@ -192,8 +198,11 @@ void OpenGLSalGraphicsImpl::DeInit()
// let it know. Other eg. VirtualDevice contexts which have
// references on and rely on this context continuing to work will
// get a shiny new context in AcquireContext:: next PreDraw.
- if( mpContext.is() && !IsOffscreen() )
- mpContext->reset();
+ if( mpWindowContext.is() )
+ {
+ mpWindowContext->reset();
+ mpWindowContext.clear();
+ }
mpContext.clear();
}
@@ -245,11 +254,6 @@ void OpenGLSalGraphicsImpl::PostDraw()
assert (maOffscreenTex);
- if( IsOffscreen() )
- assert( !mpWindowContext.is() );
- else
- assert( mpWindowContext.is() );
-
// Always queue the flush.
if( !IsOffscreen() )
flush();
@@ -2005,15 +2009,13 @@ void OpenGLSalGraphicsImpl::doFlush()
if( IsOffscreen() )
return;
- assert( mpWindowContext.is() );
-
if( !maOffscreenTex )
{
VCL_GL_INFO( "flushAndSwap - odd no texture !" );
return;
}
- if (mnDrawCountAtFlush == mnDrawCount)
+ if( mnDrawCountAtFlush == mnDrawCount )
{
VCL_GL_INFO( "eliding redundant flushAndSwap, no drawing since last!"
);
return;
@@ -2025,6 +2027,14 @@ void OpenGLSalGraphicsImpl::doFlush()
VCL_GL_INFO( "flushAndSwap" );
+ if( !mpWindowContext.is() )
+ {
+ VCL_GL_INFO( "late creation of window context" );
+ mpWindowContext = CreateWinContext();
+ }
+
+ assert( mpWindowContext.is() );
+
// Interesting ! -> this destroys a context [ somehow ] ...
mpWindowContext->makeCurrent();
CHECK_GL_ERROR();
diff --git a/vcl/source/app/svdata.cxx b/vcl/source/app/svdata.cxx
index edfdbc9..fbde610 100644
--- a/vcl/source/app/svdata.cxx
+++ b/vcl/source/app/svdata.cxx
@@ -113,23 +113,25 @@ void ImplDeInitSVData()
delete pSVData->mpPaperNames, pSVData->mpPaperNames = nullptr;
}
+/// Returns either the application window, or the default GL context window
vcl::Window* ImplGetDefaultWindow()
{
ImplSVData* pSVData = ImplGetSVData();
if ( pSVData->maWinData.mpAppWin )
return pSVData->maWinData.mpAppWin;
+ else
+ return ImplGetDefaultContextWindow();
+}
- // First test if we already have a default window.
- // Don't only place a single if..else inside solar mutex lockframe
- // because then we might have to wait for the solar mutex what is not
necessary
- // if we already have a default window.
+/// returns the default window created to hold the persistent VCL GL context.
+vcl::Window *ImplGetDefaultContextWindow()
+{
+ ImplSVData* pSVData = ImplGetSVData();
+ // Double check locking on mpDefaultWin.
if ( !pSVData->mpDefaultWin )
{
- Application::GetSolarMutex().acquire();
-
- // Test again because the thread who released the solar mutex could
have called
- // the same method
+ SolarMutexGuard aGuard;
if ( !pSVData->mpDefaultWin && !pSVData->mbDeInit )
{
@@ -142,7 +144,6 @@ vcl::Window* ImplGetDefaultWindow()
if( pContext.is() )
pContext->acquire();
}
- Application::GetSolarMutex().release();
}
return pSVData->mpDefaultWin;
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