danwalmsley
6 years ago
committed by
GitHub
GitHub
48 changed files with 604 additions and 334 deletions
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using System; |
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using System.Runtime.InteropServices; |
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using Avalonia.Platform; |
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using Avalonia.Platform.Interop; |
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namespace Avalonia.OpenGL.Angle |
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{ |
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public class AngleEglInterface : EglInterface |
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{ |
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[DllImport("libegl.dll", CharSet = CharSet.Ansi)] |
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static extern IntPtr eglGetProcAddress(string proc); |
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public AngleEglInterface() : base(LoadAngle()) |
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{ |
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} |
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static Func<string, IntPtr> LoadAngle() |
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{ |
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if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) |
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throw new PlatformNotSupportedException(); |
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{ |
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var disp = eglGetProcAddress("eglGetPlatformDisplayEXT"); |
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if (disp == IntPtr.Zero) |
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throw new OpenGlException("libegl.dll doesn't have eglGetPlatformDisplayEXT entry point"); |
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return eglGetProcAddress; |
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} |
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} |
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} |
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} |
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using System; |
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using System.Collections.Generic; |
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using System.Runtime.InteropServices; |
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using static Avalonia.OpenGL.EglConsts; |
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namespace Avalonia.OpenGL.Angle |
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{ |
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public class AngleWin32EglDisplay : EglDisplay |
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{ |
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struct AngleInfo |
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{ |
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public IntPtr Display { get; set; } |
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public AngleOptions.PlatformApi PlatformApi { get; set; } |
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} |
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static AngleInfo CreateAngleDisplay(EglInterface _egl) |
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{ |
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if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) |
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throw new PlatformNotSupportedException(); |
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var display = IntPtr.Zero; |
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AngleOptions.PlatformApi angleApi = default; |
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{ |
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if (_egl.GetPlatformDisplayEXT == null) |
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throw new OpenGlException("eglGetPlatformDisplayEXT is not supported by libegl.dll"); |
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var allowedApis = AvaloniaLocator.Current.GetService<AngleOptions>()?.AllowedPlatformApis |
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?? new [] { AngleOptions.PlatformApi.DirectX11, AngleOptions.PlatformApi.DirectX9 }; |
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foreach (var platformApi in allowedApis) |
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{ |
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int dapi; |
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if (platformApi == AngleOptions.PlatformApi.DirectX9) |
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dapi = EGL_PLATFORM_ANGLE_TYPE_D3D9_ANGLE; |
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else if (platformApi == AngleOptions.PlatformApi.DirectX11) |
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dapi = EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE; |
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else |
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continue; |
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display = _egl.GetPlatformDisplayEXT(EGL_PLATFORM_ANGLE_ANGLE, IntPtr.Zero, |
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new[] { EGL_PLATFORM_ANGLE_TYPE_ANGLE, dapi, EGL_NONE }); |
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if (display != IntPtr.Zero) |
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{ |
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angleApi = platformApi; |
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break; |
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} |
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} |
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if (display == IntPtr.Zero) |
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throw new OpenGlException("Unable to create ANGLE display"); |
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return new AngleInfo { Display = display, PlatformApi = angleApi }; |
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} |
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} |
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private AngleWin32EglDisplay(EglInterface egl, AngleInfo info) : base(egl, info.Display) |
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{ |
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PlatformApi = info.PlatformApi; |
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} |
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public AngleWin32EglDisplay(EglInterface egl) : this(egl, CreateAngleDisplay(egl)) |
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{ |
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} |
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public AngleWin32EglDisplay() : this(new AngleEglInterface()) |
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{ |
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} |
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public AngleOptions.PlatformApi PlatformApi { get; } |
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public IntPtr GetDirect3DDevice() |
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{ |
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if (!EglInterface.QueryDisplayAttribExt(Handle, EglConsts.EGL_DEVICE_EXT, out var eglDevice)) |
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throw new OpenGlException("Unable to get EGL_DEVICE_EXT"); |
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if (!EglInterface.QueryDeviceAttribExt(eglDevice, PlatformApi == AngleOptions.PlatformApi.DirectX9 ? EGL_D3D9_DEVICE_ANGLE : EGL_D3D11_DEVICE_ANGLE, out var d3dDeviceHandle)) |
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throw new OpenGlException("Unable to get EGL_D3D9_DEVICE_ANGLE"); |
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return d3dDeviceHandle; |
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} |
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public EglSurface WrapDirect3D11Texture(IntPtr handle) |
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{ |
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if (PlatformApi != AngleOptions.PlatformApi.DirectX11) |
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throw new InvalidOperationException("Current platform API is " + PlatformApi); |
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return CreatePBufferFromClientBuffer(EGL_D3D_TEXTURE_ANGLE, handle, new[] { EGL_NONE, EGL_NONE }); |
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} |
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} |
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} |
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@ -0,0 +1,103 @@ |
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using System; |
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namespace Avalonia.OpenGL |
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{ |
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public abstract class EglGlPlatformSurfaceBase : IGlPlatformSurface |
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{ |
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public interface IEglWindowGlPlatformSurfaceInfo |
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{ |
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IntPtr Handle { get; } |
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PixelSize Size { get; } |
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double Scaling { get; } |
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} |
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public abstract IGlPlatformSurfaceRenderTarget CreateGlRenderTarget(); |
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} |
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public abstract class EglPlatformSurfaceRenderTargetBase : IGlPlatformSurfaceRenderTargetWithCorruptionInfo |
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{ |
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private readonly EglDisplay _display; |
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private readonly EglContext _context; |
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protected EglPlatformSurfaceRenderTargetBase(EglDisplay display, EglContext context) |
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{ |
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_display = display; |
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_context = context; |
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} |
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public abstract bool IsCorrupted { get; } |
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public virtual void Dispose() |
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{ |
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} |
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public abstract IGlPlatformSurfaceRenderingSession BeginDraw(); |
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protected IGlPlatformSurfaceRenderingSession BeginDraw(EglSurface surface, |
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EglGlPlatformSurfaceBase.IEglWindowGlPlatformSurfaceInfo info, Action onFinish = null, bool isYFlipped = false) |
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{ |
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var l = _context.Lock(); |
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try |
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{ |
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if (IsCorrupted) |
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throw new RenderTargetCorruptedException(); |
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var restoreContext = _context.MakeCurrent(surface); |
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_display.EglInterface.WaitClient(); |
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_display.EglInterface.WaitGL(); |
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_display.EglInterface.WaitNative(EglConsts.EGL_CORE_NATIVE_ENGINE); |
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return new Session(_display, _context, surface, info, l, restoreContext, onFinish, isYFlipped); |
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} |
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catch |
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{ |
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l.Dispose(); |
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throw; |
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} |
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} |
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class Session : IGlPlatformSurfaceRenderingSession |
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{ |
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private readonly EglContext _context; |
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private readonly EglSurface _glSurface; |
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private readonly EglGlPlatformSurfaceBase.IEglWindowGlPlatformSurfaceInfo _info; |
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private readonly EglDisplay _display; |
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private readonly IDisposable _lock; |
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private readonly IDisposable _restoreContext; |
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private readonly Action _onFinish; |
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public Session(EglDisplay display, EglContext context, |
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EglSurface glSurface, EglGlPlatformSurfaceBase.IEglWindowGlPlatformSurfaceInfo info, |
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IDisposable @lock, IDisposable restoreContext, Action onFinish, bool isYFlipped) |
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{ |
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IsYFlipped = isYFlipped; |
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_context = context; |
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_display = display; |
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_glSurface = glSurface; |
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_info = info; |
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_lock = @lock; |
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_restoreContext = restoreContext; |
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_onFinish = onFinish; |
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} |
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public void Dispose() |
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{ |
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_context.GlInterface.Flush(); |
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_display.EglInterface.WaitGL(); |
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_glSurface.SwapBuffers(); |
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_display.EglInterface.WaitClient(); |
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_display.EglInterface.WaitGL(); |
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_display.EglInterface.WaitNative(EglConsts.EGL_CORE_NATIVE_ENGINE); |
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_restoreContext.Dispose(); |
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_lock.Dispose(); |
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_onFinish?.Invoke(); |
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} |
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public IGlContext Context => _context; |
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public PixelSize Size => _info.Size; |
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public double Scaling => _info.Scaling; |
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public bool IsYFlipped { get; } |
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} |
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} |
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} |
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