bool GSWndWGL::CreateContext(int major, int minor)
{
if ( !m_NativeDisplay || !m_NativeWindow )
{
fprintf( stderr, "Wrong display/window\n" );
exit(1);
}
// GL2 context are quite easy but we need GL3 which is another painful story...
m_context = wglCreateContext(m_NativeDisplay);
if (!m_context) {
fprintf(stderr, "Failed to create a 2.0 context\n");
return false;
}
// FIXME test it
// Note: albeit every tutorial said that we need an opengl context to use the GL function wglCreateContextAttribsARB
// On linux it works without the extra temporary context, not sure the limitation still applied
if (major >= 3) {
AttachContext();
// Create a context
int context_attribs[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, major,
WGL_CONTEXT_MINOR_VERSION_ARB, minor,
// FIXME : Request a debug context to ease opengl development
// Note: don't support deprecated feature (pre openg 3.1)
//GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_DEBUG_BIT_ARB | GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB
#ifdef ENABLE_OGL_DEBUG
| WGL_CONTEXT_DEBUG_BIT_ARB
#endif
,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
if (!wglCreateContextAttribsARB) {
fprintf(stderr, "Failed to init wglCreateContextAttribsARB function pointer\n");
return false;
}
HGLRC context30 = wglCreateContextAttribsARB(m_NativeDisplay, NULL, context_attribs);
if (!context30) {
fprintf(stderr, "Failed to create a 3.x context\n");
return false;
}
DetachContext();
wglDeleteContext(m_context);
m_context = context30;
fprintf(stderr, "3.x GL context successfully created\n");
}
return true;
}
void GSWndWGL::Detach()
{
// Actually the destructor is not called when there is only a GSclose/GSshutdown
// The window still need to be closed
DetachContext();
if (m_context) wglDeleteContext(m_context);
m_context = NULL;
CloseWGLDisplay();
}
void GSWndOGL::Detach()
{
// Actually the destructor is not called when there is only a GSclose/GSshutdown
// The window still need to be closed
DetachContext();
if (m_context) glXDestroyContext(m_NativeDisplay, m_context);
if (m_NativeDisplay) {
XCloseDisplay(m_NativeDisplay);
m_NativeDisplay = NULL;
}
}
void GSWndEGL::Detach()
{
// Actually the destructor is not called when there is only a GSclose/GSshutdown
// The window still need to be closed
DetachContext();
eglDestroyContext(m_eglDisplay, m_eglContext);
m_eglContext = NULL;
eglDestroySurface(m_eglDisplay, m_eglSurface);
m_eglSurface = NULL;
CloseEGLDisplay();
if (m_NativeDisplay) {
XCloseDisplay(m_NativeDisplay);
m_NativeDisplay = NULL;
}
}
void GSWndWGL::Detach()
{
// Actually the destructor is not called when there is only a GSclose/GSshutdown
// The window still need to be closed
DetachContext();
if (m_context) wglDeleteContext(m_context);
m_context = NULL;
CloseWGLDisplay();
// Used by GSReplay.
if (m_NativeWindow && m_managed)
{
DestroyWindow(m_NativeWindow);
m_NativeWindow = NULL;
}
}
void GSWndWGL::CreateContext(int major, int minor)
{
if (!m_NativeDisplay || !m_NativeWindow)
{
win_error("Wrong display/window", false);
exit(1);
}
ASSERT(major >= 3);
// GL2 context are quite easy but we need GL3 which is another painful story...
m_context = wglCreateContext(m_NativeDisplay);
if (!m_context)
win_error("Failed to create a 2.0 context");
// FIXME test it
// Note: albeit every tutorial said that we need an opengl context to use the GL function wglCreateContextAttribsARB
// On linux it works without the extra temporary context, not sure the limitation still applied
AttachContext();
// Create a context
int context_attribs[] =
{
WGL_CONTEXT_MAJOR_VERSION_ARB, major,
WGL_CONTEXT_MINOR_VERSION_ARB, minor,
// FIXME : Request a debug context to ease opengl development
// Note: don't support deprecated feature (pre openg 3.1)
//GLX_CONTEXT_FLAGS_ARB, GLX_CONTEXT_DEBUG_BIT_ARB | GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
WGL_CONTEXT_FLAGS_ARB, WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB
#ifdef ENABLE_OGL_DEBUG
| WGL_CONTEXT_DEBUG_BIT_ARB
#else
| GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR
#endif
,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0
};
PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
if (!wglCreateContextAttribsARB)
win_error("Failed to init wglCreateContextAttribsARB function pointer");
HGLRC context30 = wglCreateContextAttribsARB(m_NativeDisplay, NULL, context_attribs);
if (!context30) {
win_error("Failed to create a 3.x context with standard flags", false);
// retry with more compatible option for (Mesa on Windows, OpenGL on WINE)
context_attribs[2*2+1] = 0;
context30 = wglCreateContextAttribsARB(m_NativeDisplay, NULL, context_attribs);
}
DetachContext();
wglDeleteContext(m_context);
if (!context30)
win_error("Failed to create a 3.x context with compatible flags");
m_context = context30;
fprintf(stderr, "3.x GL context successfully created\n");
}