[Bf-blender-cvs] [5584cad5d90] blender2.8: GHOST: WGL: Silence Errors when testing opengl context versions

[Clément Foucault]

Commit: 5584cad5d90ec56febaca96e6ea1326c15523fa4
Author: Clément Foucault
Date:   Wed Dec 5 21:57:35 2018 +0100
Branches: blender2.8
https://developer.blender.org/rB5584cad5d90ec56febaca96e6ea1326c15523fa4

GHOST: WGL: Silence Errors when testing opengl context versions

===================================================================

M       intern/ghost/intern/GHOST_Context.cpp
M       intern/ghost/intern/GHOST_Context.h
M       intern/ghost/intern/GHOST_ContextWGL.cpp

===================================================================

diff --git a/intern/ghost/intern/GHOST_Context.cpp 
b/intern/ghost/intern/GHOST_Context.cpp
index e02f73ad12a..775492755a9 100644
--- a/intern/ghost/intern/GHOST_Context.cpp
+++ b/intern/ghost/intern/GHOST_Context.cpp
@@ -48,6 +48,15 @@
 
 #ifdef _WIN32
 
+bool win32_silent_chk(bool result)
+{
+       if (!result) {
+               SetLastError(NO_ERROR);
+       }
+
+       return result;
+}
+
 bool win32_chk(bool result, const char *file, int line, const char *text)
 {
        if (!result) {
diff --git a/intern/ghost/intern/GHOST_Context.h 
b/intern/ghost/intern/GHOST_Context.h
index 327ecd4b245..842736691e3 100644
--- a/intern/ghost/intern/GHOST_Context.h
+++ b/intern/ghost/intern/GHOST_Context.h
@@ -148,12 +148,15 @@ protected:
 
 #ifdef _WIN32
 bool win32_chk(bool result, const char *file = NULL, int line = 0, const char 
*text = NULL);
+bool win32_silent_chk(bool result);
 
 #  ifndef NDEBUG
 #    define WIN32_CHK(x) win32_chk((x), __FILE__, __LINE__, #x)
 #  else
 #    define WIN32_CHK(x) win32_chk(x)
 #  endif
+
+#define WIN32_CHK_SILENT(x, silent) ((silent) ? win32_silent_chk(x) : 
WIN32_CHK(x))
 #endif  /* _WIN32 */
 
 
diff --git a/intern/ghost/intern/GHOST_ContextWGL.cpp 
b/intern/ghost/intern/GHOST_ContextWGL.cpp
index 9605f7ddff2..6cb92567b99 100644
--- a/intern/ghost/intern/GHOST_ContextWGL.cpp
+++ b/intern/ghost/intern/GHOST_ContextWGL.cpp
@@ -789,7 +789,10 @@ GHOST_TSuccess GHOST_ContextWGL::initializeDrawingContext()
                m_hGLRC = ::wglCreateContextAttribsARB(m_hDC, NULL, 
&(iAttributes[0]));
        }
 
-       if (!WIN32_CHK(m_hGLRC != NULL)) {
+       /* Silence warnings interpreted as errors by users when trying to get
+        * a context with version higher than 3.3 Core. */
+       const bool silent = m_contextMajorVersion > 3;
+       if (!WIN32_CHK_SILENT(m_hGLRC != NULL, silent)) {
                goto error;
        }

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