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Fix CreateContextAttribsARB fallback behaviour 

fixes minetest/minetest#12518
This commit is contained in:
sfan5 2022-07-09 22:04:51 +02:00
parent c4ca31313f
commit 25ae156944
1 changed files with 13 additions and 0 deletions
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13
source/Irrlicht/CGLXManager.cpp
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@ -311,6 +311,16 @@ void CGLXManager::destroySurface()
glXDestroyWindow((Display*)CurrentContext.OpenGLLinux.X11Display, GlxWin);
}
#if defined(GLX_ARB_create_context)
static int IrrIgnoreError(Display *display, XErrorEvent *event)
{
char msg[256];
XGetErrorText(display, event->error_code, msg, 256);
os::Printer::log("Ignoring an X error", msg, ELL_DEBUG);
return 0;
}
#endif
bool CGLXManager::generateContext()
{
GLXContext context = 0;
@ -329,13 +339,16 @@ bool CGLXManager::generateContext()
if (glxCreateContextAttribsARB)
{
os::Printer::log("GLX with GLX_ARB_create_context", ELL_DEBUG);
int contextAttrBuffer[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
// GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
None
};
XErrorHandler old = XSetErrorHandler(IrrIgnoreError);
context = glxCreateContextAttribsARB((Display*)CurrentContext.OpenGLLinux.X11Display, (GLXFBConfig)glxFBConfig, NULL, True, contextAttrBuffer);
XSetErrorHandler(old);
// transparently fall back to legacy call
}
if (!context)