change render policy to Always when it needs to be

(cherry picked from commit a225666)
qgis · Apr 13, 2021 · f7013d2 · f7013d2
1 parent 1864237
commit f7013d2
Show file tree

Hide file tree

Showing 2 changed files with 11 additions and 0 deletions.
diff --git a/src/3d/qgs3dutils.cpp b/src/3d/qgs3dutils.cpp
@@ -38,12 +38,16 @@
 #include "qgspolygon3dsymbol.h"
 
 #include <Qt3DExtras/QPhongMaterial>
+#include <Qt3DRender/QRenderSettings>
 
 QImage Qgs3DUtils::captureSceneImage( QgsAbstract3DEngine &engine, Qgs3DMapScene *scene )
 {
   QImage resImage;
   QEventLoop evLoop;
 
+  // We need to change render policy to RenderPolicy::Always, since otherwise render capture node won't work
+  engine.renderSettings()->setRenderPolicy( Qt3DRender::QRenderSettings::RenderPolicy::Always );
+
   auto requestImageFcn = [&engine, scene]
   {
     if ( scene->sceneState() == Qgs3DMapScene::Ready )
@@ -77,6 +81,7 @@ QImage Qgs3DUtils::captureSceneImage( QgsAbstract3DEngine &engine, Qgs3DMapScene
   if ( conn2 )
     QObject::disconnect( conn2 );
 
+  engine.renderSettings()->setRenderPolicy( Qt3DRender::QRenderSettings::RenderPolicy::OnDemand );
   return resImage;
 }
 
@@ -94,6 +99,8 @@ bool Qgs3DUtils::exportAnimation( const Qgs3DAnimationSettings &animationSetting
   engine.setSize( outputSize );
   Qgs3DMapScene *scene = new Qgs3DMapScene( mapSettings, &engine );
   engine.setRootEntity( scene );
+  // We need to change render policy to RenderPolicy::Always, since otherwise render capture node won't work
+  engine.renderSettings()->setRenderPolicy( Qt3DRender::QRenderSettings::RenderPolicy::Always );
 
   if ( animationSettings.keyFrames().size() < 2 )
   {

diff --git a/src/3d/qgsabstract3dengine.cpp b/src/3d/qgsabstract3dengine.cpp
@@ -18,6 +18,7 @@
 #include "qgsshadowrenderingframegraph.h"
 
 #include <Qt3DRender/QRenderCapture>
+#include <Qt3DRender/QRenderSettings>
 
 QgsAbstract3DEngine::QgsAbstract3DEngine( QObject *parent )
   : QObject( parent )
@@ -29,9 +30,12 @@ void QgsAbstract3DEngine::requestCaptureImage()
 {
   Qt3DRender::QRenderCaptureReply *captureReply;
   captureReply = mFrameGraph->renderCapture()->requestCapture();
+  // We need to change render policy to RenderPolicy::Always, since otherwise render capture node won't work
+  this->renderSettings()->setRenderPolicy( Qt3DRender::QRenderSettings::RenderPolicy::Always );
   connect( captureReply, &Qt3DRender::QRenderCaptureReply::completed, this, [ = ]
   {
     emit imageCaptured( captureReply->image() );
+    this->renderSettings()->setRenderPolicy( Qt3DRender::QRenderSettings::RenderPolicy::OnDemand );
     captureReply->deleteLater();
   } );
 }