From edd554c115b9359c4d6967f6f07ce4b6972c0d03 Mon Sep 17 00:00:00 2001
From: Camilla Berglund <elmindreda@elmindreda.org>
Date: Sun, 22 Jul 2012 01:33:42 +0200
Subject: [PATCH] Added support for EGL_KHR_create_context.

---
 src/x11_egl_opengl.c   | 51 ++++++++++++++++++++++++++++++++++++++++++
 src/x11_egl_platform.h |  2 ++
 2 files changed, 53 insertions(+)

diff --git a/src/x11_egl_opengl.c b/src/x11_egl_opengl.c
index 4db794ba..da92fb41 100644
--- a/src/x11_egl_opengl.c
+++ b/src/x11_egl_opengl.c
@@ -260,8 +260,56 @@ static int createContext(_GLFWwindow* window,
         setEGLattrib(attribs, index, EGL_CONTEXT_CLIENT_VERSION, wndconfig->glMajor);
     }
     else
+    {
         eglBindAPI(EGL_OPENGL_API);
 
+        if (_glfwLibrary.EGL.KHR_create_context)
+        {
+            setEGLattrib(attribs, index, EGL_CONTEXT_MAJOR_VERSION_KHR, wndconfig->glMajor);
+            setEGLattrib(attribs, index, EGL_CONTEXT_MINOR_VERSION_KHR, wndconfig->glMinor);
+
+            if (wndconfig->glForward || wndconfig->glDebug || wndconfig->glRobustness)
+            {
+                int flags = 0;
+
+                if (wndconfig->glForward)
+                    flags |= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
+
+                if (wndconfig->glDebug)
+                    flags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
+
+                if (wndconfig->glRobustness)
+                    flags |= EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR;
+
+                setEGLattrib(attribs, index, EGL_CONTEXT_FLAGS_KHR, flags);
+            }
+
+            if (wndconfig->glProfile)
+            {
+                int flags = 0;
+
+                if (wndconfig->glProfile == GLFW_OPENGL_CORE_PROFILE)
+                    flags = EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
+                else if (wndconfig->glProfile == GLFW_OPENGL_COMPAT_PROFILE)
+                    flags = EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR;
+
+                setEGLattrib(attribs, index, EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR, flags);
+            }
+
+            if (wndconfig->glRobustness)
+            {
+                int strategy;
+
+                if (wndconfig->glRobustness == GLFW_OPENGL_NO_RESET_NOTIFICATION)
+                    strategy = EGL_NO_RESET_NOTIFICATION_KHR;
+                else if (wndconfig->glRobustness == GLFW_OPENGL_LOSE_CONTEXT_ON_RESET)
+                    strategy = EGL_LOSE_CONTEXT_ON_RESET_KHR;
+
+                setEGLattrib(attribs, index, EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR, strategy);
+            }
+        }
+    }
+
     setEGLattrib(attribs, index, EGL_NONE, EGL_NONE);
 
     window->EGL.context = eglCreateContext(_glfwLibrary.EGL.display,
@@ -337,6 +385,9 @@ int _glfwInitOpenGL(void)
         return GL_FALSE;
     }
 
+    if (_glfwPlatformExtensionSupported("EGL_KHR_create_context"))
+        _glfwLibrary.EGL.KHR_create_context = GL_TRUE;
+
     return GL_TRUE;
 }
 
diff --git a/src/x11_egl_platform.h b/src/x11_egl_platform.h
index f3974676..d3e70055 100644
--- a/src/x11_egl_platform.h
+++ b/src/x11_egl_platform.h
@@ -85,6 +85,8 @@ typedef struct _GLFWlibraryEGL
     EGLDisplay      display;
     EGLint          majorVersion, minorVersion;
 
+    GLboolean       KHR_create_context;
+
 #if defined(_GLFW_DLOPEN_LIBEGL)
     void*           libEGL;  // dlopen handle for libEGL.so
 #endif