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#region License
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/* FNA - XNA4 Reimplementation for Desktop Platforms
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* Copyright 2009-2020 Ethan Lee and the MonoGame Team
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*
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* Released under the Microsoft Public License.
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* See LICENSE for details.
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*/
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#endregion
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#region Using Statements
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using System;
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using System.Collections.ObjectModel;
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#endregion
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namespace Microsoft.Xna.Framework.Graphics
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{
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public sealed class GraphicsAdapter
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{
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#region Public Properties
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public DisplayMode CurrentDisplayMode
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{
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get
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{
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return FNAPlatform.GetCurrentDisplayMode(
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Adapters.IndexOf(this)
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);
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}
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}
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public DisplayModeCollection SupportedDisplayModes
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{
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get;
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private set;
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}
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public string Description
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{
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get;
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private set;
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}
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public int DeviceId
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{
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get
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{
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throw new NotImplementedException();
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}
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}
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public string DeviceName
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{
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get;
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private set;
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}
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public bool IsDefaultAdapter
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{
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get
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{
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return this == DefaultAdapter;
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}
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}
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/// <summary>
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/// Gets a <see cref="System.Boolean"/> indicating whether
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/// <see cref="GraphicsAdapter.CurrentDisplayMode"/> has a
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/// Width:Height ratio corresponding to a widescreen <see cref="DisplayMode"/>.
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/// Common widescreen modes include 16:9, 16:10 and 2:1.
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/// </summary>
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public bool IsWideScreen
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{
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get
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{
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/* Common non-widescreen modes: 4:3, 5:4, 1:1
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* Common widescreen modes: 16:9, 16:10, 2:1
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* XNA does not appear to account for rotated displays on the desktop
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*/
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const float limit = 4.0f / 3.0f;
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float aspect = CurrentDisplayMode.AspectRatio;
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return aspect > limit;
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}
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}
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public IntPtr MonitorHandle
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{
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get
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{
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throw new NotImplementedException();
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}
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}
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public int Revision
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{
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get
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{
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throw new NotImplementedException();
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}
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}
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public int SubSystemId
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{
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get
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{
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throw new NotImplementedException();
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}
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}
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public bool UseNullDevice
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{
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get;
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set;
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}
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public bool UseReferenceDevice
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{
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get;
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set;
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}
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public int VendorId
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{
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get
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{
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throw new NotImplementedException();
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}
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}
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#endregion
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#region Public Static Properties
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public static GraphicsAdapter DefaultAdapter
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{
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get
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{
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return Adapters[0];
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}
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}
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public static ReadOnlyCollection<GraphicsAdapter> Adapters
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{
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get
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{
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if (adapters == null)
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{
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adapters = new ReadOnlyCollection<GraphicsAdapter>(
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FNAPlatform.GetGraphicsAdapters()
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);
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}
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return adapters;
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}
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}
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#endregion
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#region Private Static Variables
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private static ReadOnlyCollection<GraphicsAdapter> adapters;
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#endregion
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#region Internal Constructor
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internal GraphicsAdapter(
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DisplayModeCollection modes,
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string name,
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string description
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) {
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SupportedDisplayModes = modes;
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DeviceName = name;
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Description = description;
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UseNullDevice = false;
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UseReferenceDevice = false;
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}
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#endregion
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#region Public Methods
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public bool IsProfileSupported(GraphicsProfile graphicsProfile)
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{
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/* TODO: This method could be genuinely useful!
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* Maybe look into the difference between Reach/HiDef and add the
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* appropriate properties to the GLDevice.
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* -flibit
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*/
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return true;
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}
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public bool QueryRenderTargetFormat(
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GraphicsProfile graphicsProfile,
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SurfaceFormat format,
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DepthFormat depthFormat,
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int multiSampleCount,
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out SurfaceFormat selectedFormat,
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out DepthFormat selectedDepthFormat,
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out int selectedMultiSampleCount
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) {
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/* Per the OpenGL 3.0 Specification, section 3.9.1,
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* under "Required Texture Formats". These are the
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* formats required for renderbuffer support.
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*
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* TODO: Per the 4.5 Specification, section 8.5.1,
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* RGB565, RGB5_A1, RGBA4 are also supported.
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* -flibit
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*/
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if ( format != SurfaceFormat.Color &&
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format != SurfaceFormat.Rgba1010102 &&
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format != SurfaceFormat.Rg32 &&
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format != SurfaceFormat.Rgba64 &&
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format != SurfaceFormat.Single &&
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format != SurfaceFormat.Vector2 &&
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format != SurfaceFormat.Vector4 &&
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format != SurfaceFormat.HalfSingle &&
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format != SurfaceFormat.HalfVector2 &&
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format != SurfaceFormat.HalfVector4 &&
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format != SurfaceFormat.HdrBlendable )
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{
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selectedFormat = SurfaceFormat.Color;
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}
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else
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{
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selectedFormat = format;
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}
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selectedDepthFormat = depthFormat;
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selectedMultiSampleCount = 0; // Okay, sure, sorry.
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return ( format == selectedFormat &&
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depthFormat == selectedDepthFormat &&
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multiSampleCount == selectedMultiSampleCount );
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}
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public bool QueryBackBufferFormat(
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GraphicsProfile graphicsProfile,
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SurfaceFormat format,
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DepthFormat depthFormat,
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int multiSampleCount,
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out SurfaceFormat selectedFormat,
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out DepthFormat selectedDepthFormat,
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out int selectedMultiSampleCount)
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{
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selectedFormat = SurfaceFormat.Color; // Seriously?
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selectedDepthFormat = depthFormat;
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selectedMultiSampleCount = 0; // Okay, sure, sorry.
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return ( format == selectedFormat &&
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depthFormat == selectedDepthFormat &&
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multiSampleCount == selectedMultiSampleCount );
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}
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#endregion
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}
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}
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