// Returns the Visual and depth of the chosen GLXFBConfig
//
GLFWbool _glfwChooseVisualGLX(const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig,
Visual** visual, int* depth)
{
GLXFBConfig native;
XVisualInfo* result;
if (!chooseGLXFBConfig(fbconfig, &native))
{
_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
"GLX: Failed to find a suitable GLXFBConfig");
return GLFW_FALSE;
}
result = glXGetVisualFromFBConfig(_glfw.x11.display, native);
if (!result)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"GLX: Failed to retrieve Visual for GLXFBConfig");
return GLFW_FALSE;
}
*visual = result->visual;
*depth = result->depth;
XFree(result);
return GLFW_TRUE;
}
bool Window::configInit()
{
GLXFBConfig* fbConfig = chooseGLXFBConfig();
if( !fbConfig )
{
sendError( ERROR_SYSTEMWINDOW_PIXELFORMAT_NOTFOUND );
return false;
}
GLXContext context = createGLXContext( fbConfig );
setGLXContext( context );
if( !context )
{
XFree( fbConfig );
return false;
}
bool success = configInitGLXDrawable( fbConfig );
XFree( fbConfig );
if( !success || !_impl->xDrawable )
{
sendError( ERROR_GLXWINDOW_NO_DRAWABLE );
return false;
}
makeCurrent();
initGLEW();
_initSwapSync();
if( getIAttribute( IATTR_HINT_DRAWABLE ) == FBO )
success = configInitFBO();
return success;
}
// Create the OpenGL or OpenGL ES context
//
GLFWbool _glfwCreateContextGLX(_GLFWwindow* window,
const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig)
{
int attribs[40];
GLXFBConfig native = NULL;
GLXContext share = NULL;
if (ctxconfig->share)
share = ctxconfig->share->context.glx.handle;
if (!chooseGLXFBConfig(fbconfig, &native))
{
_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
"GLX: Failed to find a suitable GLXFBConfig");
return GLFW_FALSE;
}
if (ctxconfig->client == GLFW_OPENGL_ES_API)
{
if (!_glfw.glx.ARB_create_context ||
!_glfw.glx.ARB_create_context_profile ||
!_glfw.glx.EXT_create_context_es2_profile)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"GLX: OpenGL ES requested but GLX_EXT_create_context_es2_profile is unavailable");
return GLFW_FALSE;
}
}
if (ctxconfig->forward)
{
if (!_glfw.glx.ARB_create_context)
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"GLX: Forward compatibility requested but GLX_ARB_create_context_profile is unavailable");
return GLFW_FALSE;
}
}
if (ctxconfig->profile)
{
if (!_glfw.glx.ARB_create_context ||
!_glfw.glx.ARB_create_context_profile)
{
_glfwInputError(GLFW_VERSION_UNAVAILABLE,
"GLX: An OpenGL profile requested but GLX_ARB_create_context_profile is unavailable");
return GLFW_FALSE;
}
}
_glfwGrabErrorHandlerX11();
if (_glfw.glx.ARB_create_context)
{
int index = 0, mask = 0, flags = 0;
if (ctxconfig->client == GLFW_OPENGL_API)
{
if (ctxconfig->forward)
flags |= GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;
if (ctxconfig->profile == GLFW_OPENGL_CORE_PROFILE)
mask |= GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
else if (ctxconfig->profile == GLFW_OPENGL_COMPAT_PROFILE)
mask |= GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB;
}
else
mask |= GLX_CONTEXT_ES2_PROFILE_BIT_EXT;
if (ctxconfig->debug)
flags |= GLX_CONTEXT_DEBUG_BIT_ARB;
if (ctxconfig->noerror)
flags |= GL_CONTEXT_FLAG_NO_ERROR_BIT_KHR;
if (ctxconfig->robustness)
{
if (_glfw.glx.ARB_create_context_robustness)
{
if (ctxconfig->robustness == GLFW_NO_RESET_NOTIFICATION)
{
setGLXattrib(GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB,
GLX_NO_RESET_NOTIFICATION_ARB);
}
else if (ctxconfig->robustness == GLFW_LOSE_CONTEXT_ON_RESET)
{
setGLXattrib(GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB,
GLX_LOSE_CONTEXT_ON_RESET_ARB);
}
flags |= GLX_CONTEXT_ROBUST_ACCESS_BIT_ARB;
}
}
if (ctxconfig->release)
{
if (_glfw.glx.ARB_context_flush_control)
{
if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_NONE)
{
setGLXattrib(GLX_CONTEXT_RELEASE_BEHAVIOR_ARB,
GLX_CONTEXT_RELEASE_BEHAVIOR_NONE_ARB);
}
else if (ctxconfig->release == GLFW_RELEASE_BEHAVIOR_FLUSH)
{
setGLXattrib(GLX_CONTEXT_RELEASE_BEHAVIOR_ARB,
GLX_CONTEXT_RELEASE_BEHAVIOR_FLUSH_ARB);
}
}
}
// 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
if (ctxconfig->major != 1 || ctxconfig->minor != 0)
{
setGLXattrib(GLX_CONTEXT_MAJOR_VERSION_ARB, ctxconfig->major);
setGLXattrib(GLX_CONTEXT_MINOR_VERSION_ARB, ctxconfig->minor);
}
if (mask)
setGLXattrib(GLX_CONTEXT_PROFILE_MASK_ARB, mask);
if (flags)
setGLXattrib(GLX_CONTEXT_FLAGS_ARB, flags);
setGLXattrib(None, None);
window->context.glx.handle =
_glfw.glx.CreateContextAttribsARB(_glfw.x11.display,
native,
share,
True,
attribs);
// HACK: This is a fallback for broken versions of the Mesa
// implementation of GLX_ARB_create_context_profile that fail
// default 1.0 context creation with a GLXBadProfileARB error in
// violation of the extension spec
if (!window->context.glx.handle)
{
if (_glfw.x11.errorCode == _glfw.glx.errorBase + GLXBadProfileARB &&
ctxconfig->client == GLFW_OPENGL_API &&
ctxconfig->profile == GLFW_OPENGL_ANY_PROFILE &&
ctxconfig->forward == GLFW_FALSE)
{
window->context.glx.handle =
createLegacyContextGLX(window, native, share);
}
}
}
else
{
window->context.glx.handle =
createLegacyContextGLX(window, native, share);
}
_glfwReleaseErrorHandlerX11();
if (!window->context.glx.handle)
{
_glfwInputErrorX11(GLFW_VERSION_UNAVAILABLE, "GLX: Failed to create context");
return GLFW_FALSE;
}
window->context.glx.window =
glXCreateWindow(_glfw.x11.display, native, window->x11.handle, NULL);
if (!window->context.glx.window)
{
_glfwInputError(GLFW_PLATFORM_ERROR, "GLX: Failed to create window");
return GLFW_FALSE;
}
window->context.makeCurrent = makeContextCurrentGLX;
window->context.swapBuffers = swapBuffersGLX;
window->context.swapInterval = swapIntervalGLX;
window->context.extensionSupported = extensionSupportedGLX;
window->context.getProcAddress = getProcAddressGLX;
window->context.destroy = destroyContextGLX;
return GLFW_TRUE;
}
