From dcc567ebda75a10f065b037b11bc50cd88aa5ded Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Sat, 31 Jul 2021 17:24:18 -0500
Subject: [PATCH] Disable the EGL render thread on Wayland

---
 app/streaming/video/ffmpeg-renderers/eglvid.cpp | 7 +++++++
 app/streaming/video/ffmpeg-renderers/eglvid.h   | 1 +
 2 files changed, 8 insertions(+)

diff --git a/app/streaming/video/ffmpeg-renderers/eglvid.cpp b/app/streaming/video/ffmpeg-renderers/eglvid.cpp
index ccc3277d..8d56b3df 100644
--- a/app/streaming/video/ffmpeg-renderers/eglvid.cpp
+++ b/app/streaming/video/ffmpeg-renderers/eglvid.cpp
@@ -747,6 +747,13 @@ bool EGLRenderer::specialize() {
     return err == GL_NO_ERROR;
 }
 
+bool EGLRenderer::isRenderThreadSupported()
+{
+    // libdecor may try to draw CSD on our window surface which will race with
+    // our rendering code here, so we must not use the render thread on wayland.
+    return strcmp(SDL_GetCurrentVideoDriver(), "wayland") != 0;
+}
+
 void EGLRenderer::renderFrame(AVFrame* frame)
 {
     EGLImage imgs[EGL_MAX_PLANES];
diff --git a/app/streaming/video/ffmpeg-renderers/eglvid.h b/app/streaming/video/ffmpeg-renderers/eglvid.h
index 336e8fac..7574d511 100644
--- a/app/streaming/video/ffmpeg-renderers/eglvid.h
+++ b/app/streaming/video/ffmpeg-renderers/eglvid.h
@@ -16,6 +16,7 @@ public:
     virtual void notifyOverlayUpdated(Overlay::OverlayType) override;
     virtual bool isPixelFormatSupported(int videoFormat, enum AVPixelFormat pixelFormat) override;
     virtual AVPixelFormat getPreferredPixelFormat(int videoFormat) override;
+    virtual bool isRenderThreadSupported() override;
 
 private: