From e393a31a44d6046e34641bee7630c454a335b343 Mon Sep 17 00:00:00 2001
From: Alwin Esch <alwin.esch@web.de>
Date: Sat, 2 Feb 2019 21:47:54 +0100
Subject: X11: fix usage of required configuration values

Before has Kodi checked only the EGL_NATIVE_VISUAL_ID and ignored
others. With this was e.g. on a some addons the needed EGL_DEPTH_SIZE
not available.

This separates a part of IsSuitableVisual (...) into a separate function
(SuitableCheck (...)) which is checked by GetEGLConfig and takes the
necessary configuration from the list.
---
 xbmc/windowing/X11/GLContextEGL.cpp | 24 ++++++++++++++++--------
 xbmc/windowing/X11/GLContextEGL.h   |  1 +
 2 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/xbmc/windowing/X11/GLContextEGL.cpp b/xbmc/windowing/X11/GLContextEGL.cpp
index 80670a15f0..5a07916728 100644
--- a/xbmc/windowing/X11/GLContextEGL.cpp
+++ b/xbmc/windowing/X11/GLContextEGL.cpp
@@ -335,18 +335,22 @@ void CGLContextEGL::Detach()
 bool CGLContextEGL::IsSuitableVisual(XVisualInfo *vInfo)
 {
   EGLConfig config = GetEGLConfig(m_eglDisplay, vInfo);
+  return config != EGL_NO_CONFIG;
+}
+
+bool CGLContextEGL::SuitableCheck(EGLDisplay eglDisplay, EGLConfig config)
+{
   if (config == EGL_NO_CONFIG)
-  {
-    CLog::Log(LOGERROR, "Failed to determine egl config for visual info");
     return false;
-  }
-  EGLint value;
 
-  if (!eglGetConfigAttrib(m_eglDisplay, config, EGL_RED_SIZE, &value) || value < 8)
+  EGLint value;
+  if (!eglGetConfigAttrib(eglDisplay, config, EGL_RED_SIZE, &value) || value < 8)
+    return false;
+  if (!eglGetConfigAttrib(eglDisplay, config, EGL_GREEN_SIZE, &value) || value < 8)
     return false;
-  if (!eglGetConfigAttrib(m_eglDisplay, config, EGL_GREEN_SIZE, &value) || value < 8)
+  if (!eglGetConfigAttrib(eglDisplay, config, EGL_BLUE_SIZE, &value) || value < 8)
     return false;
-  if (!eglGetConfigAttrib(m_eglDisplay, config, EGL_BLUE_SIZE, &value) || value < 8)
+  if (!eglGetConfigAttrib(eglDisplay, config, EGL_DEPTH_SIZE, &value) || value < 24)
     return false;
 
   return true;
@@ -382,13 +386,17 @@ EGLConfig CGLContextEGL::GetEGLConfig(EGLDisplay eglDisplay, XVisualInfo *vInfo)
   }
   for (EGLint i = 0; i < numConfigs; ++i)
   {
+    if (!SuitableCheck(eglDisplay, eglConfigs[i]))
+      continue;
+
     EGLint value;
     if (!eglGetConfigAttrib(eglDisplay, eglConfigs[i], EGL_NATIVE_VISUAL_ID, &value))
     {
       CLog::Log(LOGERROR, "Failed to query EGL_NATIVE_VISUAL_ID for egl config.");
       break;
     }
-    if (value == (EGLint)vInfo->visualid) {
+    if (value == (EGLint)vInfo->visualid)
+    {
       eglConfig = eglConfigs[i];
       break;
     }
diff --git a/xbmc/windowing/X11/GLContextEGL.h b/xbmc/windowing/X11/GLContextEGL.h
index 80ad06050a..ba4431318b 100644
--- a/xbmc/windowing/X11/GLContextEGL.h
+++ b/xbmc/windowing/X11/GLContextEGL.h
@@ -35,6 +35,7 @@ public:
   EGLConfig m_eglConfig;
 protected:
   bool IsSuitableVisual(XVisualInfo *vInfo);
+  bool SuitableCheck(EGLDisplay eglDisplay, EGLConfig config);
   EGLConfig GetEGLConfig(EGLDisplay eglDisplay, XVisualInfo *vInfo);
   PFNEGLGETSYNCVALUESCHROMIUMPROC eglGetSyncValuesCHROMIUM = nullptr;
   PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplayEXT = nullptr;
-- 
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