From bd6937ae5ca8bbc7c5e9b7792933d9971cf1768b Mon Sep 17 00:00:00 2001
From: Mary Guillemard <mary@mary.zone>
Date: Sat, 10 Feb 2024 20:13:10 +0100
Subject: [PATCH] Make IOpenGLContext.HasContext context dependent (#6290)

This makes IOpenGLContext.HasContext not static and be implementable.

By doing this, we can support more than WGL and WGL.

This also allows the SDL2 headless version to run under Wayland.

Signed-off-by: Mary <mary@mary.zone>
---
 src/Ryujinx.Ava/UI/Renderer/SPBOpenGLContext.cs |  2 ++
 .../BackgroundContextWorker.cs                  |  2 ++
 src/Ryujinx.Graphics.OpenGL/IOpenGLContext.cs   | 17 +----------------
 src/Ryujinx.Graphics.OpenGL/OpenGLRenderer.cs   |  2 +-
 .../OpenGL/OpenGLWindow.cs                      |  2 ++
 src/Ryujinx/Ui/SPBOpenGLContext.cs              |  2 ++
 6 files changed, 10 insertions(+), 17 deletions(-)

diff --git a/src/Ryujinx.Ava/UI/Renderer/SPBOpenGLContext.cs b/src/Ryujinx.Ava/UI/Renderer/SPBOpenGLContext.cs
index 5ff756f2..63bf6cf7 100644
--- a/src/Ryujinx.Ava/UI/Renderer/SPBOpenGLContext.cs
+++ b/src/Ryujinx.Ava/UI/Renderer/SPBOpenGLContext.cs
@@ -29,6 +29,8 @@ namespace Ryujinx.Ava.UI.Renderer
             _context.MakeCurrent(_window);
         }
 
+        public bool HasContext() => _context.IsCurrent;
+
         public static SPBOpenGLContext CreateBackgroundContext(OpenGLContextBase sharedContext)
         {
             OpenGLContextBase context = PlatformHelper.CreateOpenGLContext(FramebufferFormat.Default, 3, 3, OpenGLContextFlags.Compat, true, sharedContext);
diff --git a/src/Ryujinx.Graphics.OpenGL/BackgroundContextWorker.cs b/src/Ryujinx.Graphics.OpenGL/BackgroundContextWorker.cs
index ae647e38..f22e0df5 100644
--- a/src/Ryujinx.Graphics.OpenGL/BackgroundContextWorker.cs
+++ b/src/Ryujinx.Graphics.OpenGL/BackgroundContextWorker.cs
@@ -30,6 +30,8 @@ namespace Ryujinx.Graphics.OpenGL
             _thread.Start();
         }
 
+        public bool HasContext() => _backgroundContext.HasContext();
+
         private void Run()
         {
             InBackground = true;
diff --git a/src/Ryujinx.Graphics.OpenGL/IOpenGLContext.cs b/src/Ryujinx.Graphics.OpenGL/IOpenGLContext.cs
index a11b9cb2..525418d7 100644
--- a/src/Ryujinx.Graphics.OpenGL/IOpenGLContext.cs
+++ b/src/Ryujinx.Graphics.OpenGL/IOpenGLContext.cs
@@ -7,21 +7,6 @@ namespace Ryujinx.Graphics.OpenGL
     {
         void MakeCurrent();
 
-        // TODO: Support more APIs per platform.
-        static bool HasContext()
-        {
-            if (OperatingSystem.IsWindows())
-            {
-                return WGLHelper.GetCurrentContext() != IntPtr.Zero;
-            }
-            else if (OperatingSystem.IsLinux())
-            {
-                return GLXHelper.GetCurrentContext() != IntPtr.Zero;
-            }
-            else
-            {
-                return false;
-            }
-        }
+        bool HasContext();
     }
 }
diff --git a/src/Ryujinx.Graphics.OpenGL/OpenGLRenderer.cs b/src/Ryujinx.Graphics.OpenGL/OpenGLRenderer.cs
index 3d774aad..eabcb3c1 100644
--- a/src/Ryujinx.Graphics.OpenGL/OpenGLRenderer.cs
+++ b/src/Ryujinx.Graphics.OpenGL/OpenGLRenderer.cs
@@ -248,7 +248,7 @@ namespace Ryujinx.Graphics.OpenGL
         {
             // alwaysBackground is ignored, since we cannot switch from the current context.
 
-            if (IOpenGLContext.HasContext())
+            if (_window.BackgroundContext.HasContext())
             {
                 action(); // We have a context already - use that (assuming it is the main one).
             }
diff --git a/src/Ryujinx.Headless.SDL2/OpenGL/OpenGLWindow.cs b/src/Ryujinx.Headless.SDL2/OpenGL/OpenGLWindow.cs
index 3fb93a0e..7ea6e148 100644
--- a/src/Ryujinx.Headless.SDL2/OpenGL/OpenGLWindow.cs
+++ b/src/Ryujinx.Headless.SDL2/OpenGL/OpenGLWindow.cs
@@ -96,6 +96,8 @@ namespace Ryujinx.Headless.SDL2.OpenGL
                 }
             }
 
+            public bool HasContext() => SDL_GL_GetCurrentContext() != IntPtr.Zero;
+
             public void Dispose()
             {
                 SDL_GL_DeleteContext(_context);
diff --git a/src/Ryujinx/Ui/SPBOpenGLContext.cs b/src/Ryujinx/Ui/SPBOpenGLContext.cs
index 6f2db697..0c5e5736 100644
--- a/src/Ryujinx/Ui/SPBOpenGLContext.cs
+++ b/src/Ryujinx/Ui/SPBOpenGLContext.cs
@@ -29,6 +29,8 @@ namespace Ryujinx.Ui
             _context.MakeCurrent(_window);
         }
 
+        public bool HasContext() => _context.IsCurrent;
+
         public static SPBOpenGLContext CreateBackgroundContext(OpenGLContextBase sharedContext)
         {
             OpenGLContextBase context = PlatformHelper.CreateOpenGLContext(FramebufferFormat.Default, 3, 3, OpenGLContextFlags.Compat, true, sharedContext);