From f4ea29cd06b8f42f9614f7a3f29a44532d3e90f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Camilla=20L=C3=B6wy?= <elmindreda@glfw.org>
Date: Thu, 8 Jun 2017 15:23:04 +0200
Subject: [PATCH] GLX: Add GLX_ARB_create_context_no_error support

---
 README.md         |  1 +
 src/glx_context.c | 13 +++++++++++--
 src/glx_context.h |  2 ++
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 3058a40a..9ab9eae6 100644
--- a/README.md
+++ b/README.md
@@ -201,6 +201,7 @@ information on what to include when reporting a bug.
                   modes (#682)
 - [WGL] Added support for `WGL_EXT_colorspace` for OpenGL ES contexts
 - [WGL] Added support for `WGL_ARB_create_context_no_error`
+- [GLX] Added support for `GLX_ARB_create_context_no_error`
 - [EGL] Added support for `EGL_KHR_get_all_proc_addresses` (#871)
 - [EGL] Added support for `EGL_KHR_context_flush_control`
 - [EGL] Bugfix: The test for `EGL_RGB_BUFFER` was invalid
diff --git a/src/glx_context.c b/src/glx_context.c
index 3e6ff96f..a3978167 100644
--- a/src/glx_context.c
+++ b/src/glx_context.c
@@ -397,6 +397,9 @@ GLFWbool _glfwInitGLX(void)
     if (extensionSupportedGLX("GLX_EXT_create_context_es2_profile"))
         _glfw.glx.EXT_create_context_es2_profile = GLFW_TRUE;
 
+    if (extensionSupportedGLX("GLX_ARB_create_context_no_error"))
+        _glfw.glx.ARB_create_context_no_error = GLFW_TRUE;
+
     if (extensionSupportedGLX("GLX_ARB_context_flush_control"))
         _glfw.glx.ARB_context_flush_control = GLFW_TRUE;
 
@@ -498,8 +501,6 @@ GLFWbool _glfwCreateContextGLX(_GLFWwindow* window,
 
         if (ctxconfig->debug)
             flags |= GLX_CONTEXT_DEBUG_BIT_ARB;
-        if (ctxconfig->noerror)
-            flags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR;
 
         if (ctxconfig->robustness)
         {
@@ -537,6 +538,14 @@ GLFWbool _glfwCreateContextGLX(_GLFWwindow* window,
             }
         }
 
+        if (ctxconfig->noerror)
+        {
+            if (_glfw.glx.ARB_create_context_no_error)
+            {
+                setGLXattrib(GLX_CONTEXT_OPENGL_NO_ERROR_ARB, GLFW_TRUE);
+            }
+        }
+
         // NOTE: Only request an explicitly versioned context when necessary, as
         //       explicitly requesting version 1.0 does not always return the
         //       highest version supported by the driver
diff --git a/src/glx_context.h b/src/glx_context.h
index 3a427bd2..30743c11 100644
--- a/src/glx_context.h
+++ b/src/glx_context.h
@@ -64,6 +64,7 @@
 #define GLX_CONTEXT_RELEASE_BEHAVIOR_ARB 0x2097
 #define GLX_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB 0
 #define GLX_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB 0x2098
+#define GLX_CONTEXT_OPENGL_NO_ERROR_ARB 0x31b3
 
 typedef XID GLXWindow;
 typedef XID GLXDrawable;
@@ -162,6 +163,7 @@ typedef struct _GLFWlibraryGLX
     GLFWbool        ARB_create_context_profile;
     GLFWbool        ARB_create_context_robustness;
     GLFWbool        EXT_create_context_es2_profile;
+    GLFWbool        ARB_create_context_no_error;
     GLFWbool        ARB_context_flush_control;
 
 } _GLFWlibraryGLX;