From 42ced309d330e2fa61e7dea58588640003ca6318 Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Fri, 15 May 2020 20:22:11 -0700
Subject: [PATCH] Restore the original GL attributes after EGLRenderer is
 destroyed

---
 app/streaming/video/ffmpeg-renderers/eglvid.cpp | 11 +++++++++++
 app/streaming/video/ffmpeg-renderers/eglvid.h   |  4 ++++
 2 files changed, 15 insertions(+)

diff --git a/app/streaming/video/ffmpeg-renderers/eglvid.cpp b/app/streaming/video/ffmpeg-renderers/eglvid.cpp
index d7a71400..4086d069 100644
--- a/app/streaming/video/ffmpeg-renderers/eglvid.cpp
+++ b/app/streaming/video/ffmpeg-renderers/eglvid.cpp
@@ -66,6 +66,11 @@ EGLRenderer::EGLRenderer(IFFmpegRenderer *backendRenderer)
 {
     SDL_assert(backendRenderer);
     SDL_assert(backendRenderer->canExportEGL());
+
+    // Save these global parameters so we can restore them in our destructor
+    SDL_GL_GetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, &m_OldContextProfileMask);
+    SDL_GL_GetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, &m_OldContextMajorVersion);
+    SDL_GL_GetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, &m_OldContextMinorVersion);
 }
 
 EGLRenderer::~EGLRenderer()
@@ -85,6 +90,12 @@ EGLRenderer::~EGLRenderer()
         }
         SDL_GL_DeleteContext(m_Context);
     }
+
+    // Reset the global properties back to what they were before
+    SDL_SetHint(SDL_HINT_OPENGL_ES_DRIVER, "0");
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, m_OldContextProfileMask);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, m_OldContextMajorVersion);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, m_OldContextMinorVersion);
 }
 
 bool EGLRenderer::prepareDecoderContext(AVCodecContext*, AVDictionary**)
diff --git a/app/streaming/video/ffmpeg-renderers/eglvid.h b/app/streaming/video/ffmpeg-renderers/eglvid.h
index f0f8a9f7..73a40618 100644
--- a/app/streaming/video/ffmpeg-renderers/eglvid.h
+++ b/app/streaming/video/ffmpeg-renderers/eglvid.h
@@ -37,5 +37,9 @@ private:
     PFNGLBINDVERTEXARRAYOESPROC m_glBindVertexArrayOES;
     PFNGLDELETEVERTEXARRAYSOESPROC m_glDeleteVertexArraysOES;
 
+    int m_OldContextProfileMask;
+    int m_OldContextMajorVersion;
+    int m_OldContextMinorVersion;
+
     SDL_Renderer *m_DummyRenderer;
 };