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 5ff756f248..63bf6cf7c7 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 ae647e388f..f22e0df57b 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 a11b9cb290..525418d74f 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 3d774aad47..eabcb3c105 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 3fb93a0ec0..7ea6e14813 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 6f2db697af..0c5e573603 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);