diff options
Diffstat (limited to 'src/quick/scenegraph/qsgcontext.cpp')
| -rw-r--r-- | src/quick/scenegraph/qsgcontext.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/quick/scenegraph/qsgcontext.cpp b/src/quick/scenegraph/qsgcontext.cpp index d3710c7bd5..61fb1bc5b9 100644 --- a/src/quick/scenegraph/qsgcontext.cpp +++ b/src/quick/scenegraph/qsgcontext.cpp @@ -47,13 +47,16 @@ #include <QtQuick/private/qsgdefaultimagenode_p.h> #include <QtQuick/private/qsgdefaultglyphnode_p.h> #include <QtQuick/private/qsgdistancefieldglyphnode_p.h> +#include <QtQuick/private/qsgdistancefieldglyphnode_p_p.h> #include <QtQuick/private/qsgshareddistancefieldglyphcache_p.h> +#include <QtQuick/QSGFlatColorMaterial> #include <QtQuick/private/qsgtexture_p.h> #include <QtQuick/private/qquickpixmapcache_p.h> #include <QGuiApplication> #include <QOpenGLContext> +#include <QQuickWindow> #include <QtGui/qopenglframebufferobject.h> #include <private/qqmlglobal_p.h> @@ -262,9 +265,35 @@ void QSGContext::initialize(QOpenGLContext *context) Q_ASSERT(!d->gl); d->gl = context; + precompileMaterials(); + emit initialized(); } +#define QSG_PRECOMPILE_MATERIAL(name) { name m; prepareMaterial(&m); } + +/* + * Some glsl compilers take their time compiling materials, and + * the way the scene graph is being processed, these materials + * get compiled when they are first taken into use. This can + * easily lead to skipped frames. By precompiling the most + * common materials, we potentially add a few milliseconds to the + * start up, and reduce the chance of avoiding skipped frames + * later on. + */ +void QSGContext::precompileMaterials() +{ + if (qEnvironmentVariableIsEmpty("QSG_NO_MATERIAL_PRELOADING")) { + QSG_PRECOMPILE_MATERIAL(QSGVertexColorMaterial); + QSG_PRECOMPILE_MATERIAL(QSGFlatColorMaterial); + QSG_PRECOMPILE_MATERIAL(QSGOpaqueTextureMaterial); + QSG_PRECOMPILE_MATERIAL(QSGTextureMaterial); + QSG_PRECOMPILE_MATERIAL(SmoothTextureMaterial); + QSG_PRECOMPILE_MATERIAL(SmoothColorMaterial); + QSG_PRECOMPILE_MATERIAL(QSGDistanceFieldTextMaterial); + } +} + /*! Returns if the scene graph context is ready or not, meaning that it has a valid @@ -398,6 +427,8 @@ QSurfaceFormat QSGContext::defaultSurfaceFormat() const QSurfaceFormat format; format.setDepthBufferSize(24); format.setStencilBufferSize(8); + if (QQuickWindow::hasDefaultAlphaBuffer()) + format.setAlphaBufferSize(8); format.setSwapBehavior(QSurfaceFormat::DoubleBuffer); return format; } |