diff options
| -rw-r--r-- | src/quick/doc/src/concepts/visualcanvas/scenegraph.qdoc | 13 | ||||
| -rw-r--r-- | src/quick/scenegraph/qsgrhisupport.cpp | 17 | ||||
| -rw-r--r-- | src/quick/scenegraph/qsgrhisupport_p.h | 2 |
3 files changed, 27 insertions, 5 deletions
diff --git a/src/quick/doc/src/concepts/visualcanvas/scenegraph.qdoc b/src/quick/doc/src/concepts/visualcanvas/scenegraph.qdoc index 864d90274c..e09c430e43 100644 --- a/src/quick/doc/src/concepts/visualcanvas/scenegraph.qdoc +++ b/src/quick/doc/src/concepts/visualcanvas/scenegraph.qdoc @@ -1016,6 +1016,14 @@ with multiple windows. \li Where applicable (Vulkan, Direct3D), enables the graphics API implementation's debug and/or validation layers, if available. + \row + \li \c QSG_RHI_PREFER_SOFTWARE_RENDERER + \li \c 1 + \li Requests choosing an adapter or physical device that uses software-based + rasterization. Applicable only when the underlying API has support for + enumerating adapters (for example, Direct3D or Vulkan), and is ignored + otherwise. + \endtable Applications wishing to always run with a single given graphics API, can @@ -1031,4 +1039,9 @@ with multiple windows. equivalent in effect to running with both \c QSG_RHI and \c QSG_RHI_BACKEND set. + All QRhi backends will choose the system default GPU adapter or physical + device, unless overridden by \c{QSG_RHI_PREFER_SOFTWARE_RENDERER} or a + backend-specific variable, such as, \c{QT_D3D_ADAPTER_INDEX} or + \c{QT_VK_PHYSICAL_DEVICE_INDEX}. No further adapter configurability is + provided at this time. */ diff --git a/src/quick/scenegraph/qsgrhisupport.cpp b/src/quick/scenegraph/qsgrhisupport.cpp index 2c5d8fb2ac..12c6742342 100644 --- a/src/quick/scenegraph/qsgrhisupport.cpp +++ b/src/quick/scenegraph/qsgrhisupport.cpp @@ -101,7 +101,8 @@ QSGRhiSupport::QSGRhiSupport() m_enableRhi(false), m_debugLayer(false), m_profile(false), - m_shaderEffectDebug(false) + m_shaderEffectDebug(false), + m_preferSoftwareRenderer(false) { } @@ -140,7 +141,7 @@ void QSGRhiSupport::applySettings() } } else { // check env.vars., fall back to platform-specific defaults when backend is not set - m_enableRhi = qEnvironmentVariableIntValue("QSG_RHI"); + m_enableRhi = uint(qEnvironmentVariableIntValue("QSG_RHI")); const QByteArray rhiBackend = qgetenv("QSG_RHI_BACKEND"); if (rhiBackend == QByteArrayLiteral("gl") || rhiBackend == QByteArrayLiteral("gles2") @@ -171,12 +172,14 @@ void QSGRhiSupport::applySettings() return; // validation layers (Vulkan) or debug layer (D3D) - m_debugLayer = qEnvironmentVariableIntValue("QSG_RHI_DEBUG_LAYER"); + m_debugLayer = uint(qEnvironmentVariableIntValue("QSG_RHI_DEBUG_LAYER")); // EnableProfiling + DebugMarkers - m_profile = qEnvironmentVariableIntValue("QSG_RHI_PROFILE"); + m_profile = uint(qEnvironmentVariableIntValue("QSG_RHI_PROFILE")); - m_shaderEffectDebug = qEnvironmentVariableIntValue("QSG_RHI_SHADEREFFECT_DEBUG"); + m_shaderEffectDebug = uint(qEnvironmentVariableIntValue("QSG_RHI_SHADEREFFECT_DEBUG")); + + m_preferSoftwareRenderer = uint(qEnvironmentVariableIntValue("QSG_RHI_PREFER_SOFTWARE_RENDERER")); m_killDeviceFrameCount = qEnvironmentVariableIntValue("QSG_RHI_SIMULATE_DEVICE_LOSS"); if (m_killDeviceFrameCount > 0 && m_rhiBackend == QRhi::D3D11) @@ -205,6 +208,8 @@ void QSGRhiSupport::applySettings() qCDebug(QSG_LOG_INFO, "Using QRhi with backend %s\n graphics API debug/validation layers: %d\n QRhi profiling and debug markers: %d", backendName, m_debugLayer, m_profile); + if (m_preferSoftwareRenderer) + qCDebug(QSG_LOG_INFO, "Prioritizing software renderers"); } QSGRhiSupport *QSGRhiSupport::staticInst() @@ -463,6 +468,8 @@ QRhi *QSGRhiSupport::createRhi(QWindow *window, QOffscreenSurface *offscreenSurf QRhi::Flags flags = 0; if (isProfilingRequested()) flags |= QRhi::EnableProfiling | QRhi::EnableDebugMarkers; + if (isSoftwareRendererRequested()) + flags |= QRhi::PreferSoftwareRenderer; QRhi::Implementation backend = rhiBackend(); if (backend == QRhi::Null) { diff --git a/src/quick/scenegraph/qsgrhisupport_p.h b/src/quick/scenegraph/qsgrhisupport_p.h index 536efa55c3..d008ecd0af 100644 --- a/src/quick/scenegraph/qsgrhisupport_p.h +++ b/src/quick/scenegraph/qsgrhisupport_p.h @@ -114,6 +114,7 @@ public: bool isDebugLayerRequested() const { return m_debugLayer; } bool isProfilingRequested() const { return m_profile; } bool isShaderEffectDebuggingRequested() const { return m_shaderEffectDebug; } + bool isSoftwareRendererRequested() const { return m_preferSoftwareRenderer; } QSurface::SurfaceType windowSurfaceType() const; @@ -144,6 +145,7 @@ private: uint m_debugLayer : 1; uint m_profile : 1; uint m_shaderEffectDebug : 1; + uint m_preferSoftwareRenderer : 1; }; // Sends QRhi resource statistics over a QTcpSocket. To be initialized by the |