From 4fcca6a0abb4bc19854c0a41c00725954345248d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20Foucault?= <foucault.clem@gmail.com>
Date: Tue, 14 Aug 2018 20:28:18 +0200
Subject: [PATCH] GHOST: Make win32 errors more readable on some drivers

---
 intern/ghost/intern/GHOST_Context.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/intern/ghost/intern/GHOST_Context.cpp b/intern/ghost/intern/GHOST_Context.cpp
index 823a476d244..e02f73ad12a 100644
--- a/intern/ghost/intern/GHOST_Context.cpp
+++ b/intern/ghost/intern/GHOST_Context.cpp
@@ -59,7 +59,10 @@ bool win32_chk(bool result, const char *file, int line, const char *text)
 
 		DWORD count = 0;
 
-		switch (error) {
+		/* Some drivers returns a HRESULT instead of a standard error message.
+		 * i.e: 0xC0072095 instead of 0x2095 for ERROR_INVALID_VERSION_ARB
+		 * So strip down the error to the valid error code range. */
+		switch (error & 0x0000FFFF) {
 			case ERROR_INVALID_VERSION_ARB:
 				msg = "The specified OpenGL version and feature set are either invalid or not supported.\n";
 				break;