Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Core / CSharp / System / Windows / Media / RenderCapability.cs / 2 / RenderCapability.cs
//------------------------------------------------------------------------------ // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: // The RenderCapability class allows clients to query for the current // render tier associated with their Dispatcher and to register for // notification on change. // //----------------------------------------------------------------------------- using System; using System.Diagnostics; namespace System.Windows.Media { ////// RenderCapability - /// The RenderCapability class allows clients to query for the current /// render tier associated with their Dispatcher and to register for /// notification on change. /// public static class RenderCapability { ////// Tier Property - returns the current render tier for the Dispatcher associated /// with the current thread. /// public static int Tier { get { MediaContext mediaContext = MediaContext.CurrentMediaContext; // The Dispatcher auto-creates if there is no Dispatcher associated with this // thread, and the MediaContext does the same. Thus, mediaContext should never // be null. Debug.Assert(mediaContext != null); return mediaContext.Tier; } } ////// Returns whether the specified PixelShader major/minor version is /// supported by this version of WPF, and whether Effects using the /// specified major/minor version can run on the GPU. /// public static bool IsPixelShaderVersionSupported(short majorVersionRequested, short minorVersionRequested) { bool isSupported = false; // For now, we only support PS 2.0. Can only return true if this is // the version asked for. const short majorVersionRequired = 2; const short minorVersionRequired = 0; if (majorVersionRequested == majorVersionRequired && minorVersionRequested == minorVersionRequired) { // Now actually check. MediaContext mediaContext = MediaContext.CurrentMediaContext; byte majorVersion = (byte)((mediaContext.PixelShaderVersion >> 8) & 0xFF); byte minorVersion = (byte)((mediaContext.PixelShaderVersion >> 0) & 0xFF); // We assume here that a higher version does in fact support the // version we're requiring. if (majorVersion >= majorVersionRequired) { isSupported = true; } else if (majorVersion == majorVersionRequired && minorVersion >= minorVersionRequired) { isSupported = true; } } return isSupported; } ////// Returns whether Effects can be rendered in software on this machine. /// public static bool IsShaderEffectSoftwareRenderingSupported { get { MediaContext mediaContext = MediaContext.CurrentMediaContext; return mediaContext.HasSSE2Support; } } ////// TierChanged event - /// This event is raised when the Tier for a given Dispatcher changes. /// public static event EventHandler TierChanged { add { MediaContext mediaContext = MediaContext.CurrentMediaContext; // The Dispatcher auto-creates if there is no Dispatcher associated with this // thread, and the MediaContext does the same. Thus, mediaContext should never // be null. Debug.Assert(mediaContext != null); mediaContext.TierChanged += value; } remove { MediaContext mediaContext = MediaContext.CurrentMediaContext; // The Dispatcher auto-creates if there is no Dispatcher associated with this // thread, and the MediaContext does the same. Thus, mediaContext should never // be null. Debug.Assert(mediaContext != null); mediaContext.TierChanged -= value; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //------------------------------------------------------------------------------ // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: // The RenderCapability class allows clients to query for the current // render tier associated with their Dispatcher and to register for // notification on change. // //----------------------------------------------------------------------------- using System; using System.Diagnostics; namespace System.Windows.Media { ////// RenderCapability - /// The RenderCapability class allows clients to query for the current /// render tier associated with their Dispatcher and to register for /// notification on change. /// public static class RenderCapability { ////// Tier Property - returns the current render tier for the Dispatcher associated /// with the current thread. /// public static int Tier { get { MediaContext mediaContext = MediaContext.CurrentMediaContext; // The Dispatcher auto-creates if there is no Dispatcher associated with this // thread, and the MediaContext does the same. Thus, mediaContext should never // be null. Debug.Assert(mediaContext != null); return mediaContext.Tier; } } ////// Returns whether the specified PixelShader major/minor version is /// supported by this version of WPF, and whether Effects using the /// specified major/minor version can run on the GPU. /// public static bool IsPixelShaderVersionSupported(short majorVersionRequested, short minorVersionRequested) { bool isSupported = false; // For now, we only support PS 2.0. Can only return true if this is // the version asked for. const short majorVersionRequired = 2; const short minorVersionRequired = 0; if (majorVersionRequested == majorVersionRequired && minorVersionRequested == minorVersionRequired) { // Now actually check. MediaContext mediaContext = MediaContext.CurrentMediaContext; byte majorVersion = (byte)((mediaContext.PixelShaderVersion >> 8) & 0xFF); byte minorVersion = (byte)((mediaContext.PixelShaderVersion >> 0) & 0xFF); // We assume here that a higher version does in fact support the // version we're requiring. if (majorVersion >= majorVersionRequired) { isSupported = true; } else if (majorVersion == majorVersionRequired && minorVersion >= minorVersionRequired) { isSupported = true; } } return isSupported; } ////// Returns whether Effects can be rendered in software on this machine. /// public static bool IsShaderEffectSoftwareRenderingSupported { get { MediaContext mediaContext = MediaContext.CurrentMediaContext; return mediaContext.HasSSE2Support; } } ////// TierChanged event - /// This event is raised when the Tier for a given Dispatcher changes. /// public static event EventHandler TierChanged { add { MediaContext mediaContext = MediaContext.CurrentMediaContext; // The Dispatcher auto-creates if there is no Dispatcher associated with this // thread, and the MediaContext does the same. Thus, mediaContext should never // be null. Debug.Assert(mediaContext != null); mediaContext.TierChanged += value; } remove { MediaContext mediaContext = MediaContext.CurrentMediaContext; // The Dispatcher auto-creates if there is no Dispatcher associated with this // thread, and the MediaContext does the same. Thus, mediaContext should never // be null. Debug.Assert(mediaContext != null); mediaContext.TierChanged -= value; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- EqualityComparer.cs
- MultipartContentParser.cs
- ImageBrush.cs
- SchemaManager.cs
- AutomationPatternInfo.cs
- ConvertEvent.cs
- PrinterUnitConvert.cs
- SelectionListComponentEditor.cs
- SQLInt32Storage.cs
- RequestUriProcessor.cs
- ConfigurationSectionGroup.cs
- Filter.cs
- SamlAttribute.cs
- BindingGroup.cs
- Inflater.cs
- Splitter.cs
- DocumentGridContextMenu.cs
- TableParagraph.cs
- TableSectionStyle.cs
- ReceiveSecurityHeaderEntry.cs
- TailCallAnalyzer.cs
- EnvelopedPkcs7.cs
- PropertyItemInternal.cs
- DispatcherEventArgs.cs
- DBCommandBuilder.cs
- dataprotectionpermission.cs
- Marshal.cs
- FastEncoderWindow.cs
- ContentValidator.cs
- ListViewItem.cs
- Section.cs
- DataSourceComponent.cs
- Page.cs
- SqlDataSourceConfigureSortForm.cs
- DataGridViewRowPrePaintEventArgs.cs
- Section.cs
- XmlAutoDetectWriter.cs
- EdmItemCollection.OcAssemblyCache.cs
- ScriptResourceHandler.cs
- BamlLocalizableResourceKey.cs
- SmtpMail.cs
- PartBasedPackageProperties.cs
- UInt16.cs
- OracleConnectionString.cs
- MultilineStringConverter.cs
- AcceleratedTokenProviderState.cs
- UnaryNode.cs
- GestureRecognizer.cs
- DBAsyncResult.cs
- SymmetricKeyWrap.cs
- HttpResponseWrapper.cs
- ActivityUtilities.cs
- EventEntry.cs
- SapiRecoContext.cs
- CapiSafeHandles.cs
- RadioButtonStandardAdapter.cs
- DocumentPageTextView.cs
- XPathNodeInfoAtom.cs
- TextServicesDisplayAttribute.cs
- InternalConfigSettingsFactory.cs
- Constants.cs
- Stroke.cs
- ReadContentAsBinaryHelper.cs
- TraversalRequest.cs
- smtpconnection.cs
- BitmapDecoder.cs
- NumericUpDownAcceleration.cs
- EditorPartChrome.cs
- ImmutableCollection.cs
- MobileComponentEditorPage.cs
- DataGrid.cs
- AdCreatedEventArgs.cs
- MouseBinding.cs
- StylusPointPropertyInfo.cs
- Triplet.cs
- ResourceWriter.cs
- SingleBodyParameterMessageFormatter.cs
- AmbientLight.cs
- EventProviderWriter.cs
- exports.cs
- SimpleMailWebEventProvider.cs
- SecureEnvironment.cs
- ThreadInterruptedException.cs
- EntityTypeEmitter.cs
- RegistryExceptionHelper.cs
- _SpnDictionary.cs
- WebBrowserDesigner.cs
- _TLSstream.cs
- RepeaterCommandEventArgs.cs
- TextTreeUndoUnit.cs
- OutputCacheSection.cs
- DocumentGridContextMenu.cs
- ElasticEase.cs
- DiscardableAttribute.cs
- TagPrefixCollection.cs
- ValueProviderWrapper.cs
- PtsPage.cs
- TouchesCapturedWithinProperty.cs
- PersonalizationStateInfoCollection.cs
- TemplateBindingExtension.cs