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failover to other graphics pipes if the default one fails to open

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This commit is contained in:
David Rose 2005-03-21 18:54:37 +00:00
parent ea51a7a6f7
commit 43fa6e3a0c
2 changed files with 60 additions and 4 deletions
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61
panda/src/framework/pandaFramework.cxx
View File

@ -279,9 +279,56 @@ get_default_window_props(WindowProperties &props) {
////////////////////////////////////////////////////////////////////
// Function: PandaFramework::open_window
// Access: Public
// Description: Opens a new window, using the default parameters.
// Returns the new WindowFramework if successful, or
// NULL if not.
// Description: Opens a window on the default graphics pipe. If the
// default graphics pipe can't open a window for some
// reason, automatically fails over to the next
// available graphics pipe, and updates _default_pipe
// accordingly. Returns NULL only if all graphics pipes
// fail.
////////////////////////////////////////////////////////////////////
WindowFramework *PandaFramework::
open_window() {
GraphicsPipe *pipe = get_default_pipe();
if (pipe == (GraphicsPipe *)NULL) {
// Can't get a pipe.
return NULL;
}
WindowFramework *wf = open_window(pipe, NULL);
if (wf == (WindowFramework *)NULL) {
// Ok, the default graphics pipe failed; try a little harder.
GraphicsPipeSelection *selection = GraphicsPipeSelection::get_global_ptr();
selection->load_aux_modules();
int num_pipe_types = selection->get_num_pipe_types();
for (int i = 0; i < num_pipe_types; i++) {
TypeHandle pipe_type = selection->get_pipe_type(i);
if (pipe_type != _default_pipe->get_type()) {
PT(GraphicsPipe) new_pipe = selection->make_pipe(pipe_type);
if (new_pipe != (GraphicsPipe *)NULL) {
wf = open_window(new_pipe, NULL);
if (wf != (WindowFramework *)NULL) {
// Here's the winner!
_default_pipe = new_pipe;
return wf;
}
}
}
}
// Too bad; none of the pipes could open a window. Fall through
// and return NULL.
}
return wf;
}
////////////////////////////////////////////////////////////////////
// Function: PandaFramework::open_window
// Access: Public
// Description: Opens a new window on the indicated pipe, using the
// default parameters. Returns the new WindowFramework
// if successful, or NULL if not.
////////////////////////////////////////////////////////////////////
WindowFramework *PandaFramework::
open_window(GraphicsPipe *pipe, GraphicsStateGuardian *gsg) {
@ -324,6 +371,14 @@ open_window(const WindowProperties &props, GraphicsPipe *pipe,
GraphicsWindow *win = wf->open_window(props, get_graphics_engine(),
pipe, gsg);
_engine->open_windows();
if (win != (GraphicsWindow *)NULL && !win->is_valid()) {
// The window won't open.
_engine->remove_window(win);
wf->close_window();
win = NULL;
}
if (win == (GraphicsWindow *)NULL) {
// Oops, couldn't make an actual window.
framework_cat.error()

3
panda/src/framework/pandaFramework.h
View File

@ -62,7 +62,8 @@ public:
INLINE void set_window_title(const string &title);
virtual void get_default_window_props(WindowProperties &props);
WindowFramework *open_window(GraphicsPipe *pipe = NULL,
WindowFramework *open_window();
WindowFramework *open_window(GraphicsPipe *pipe,
GraphicsStateGuardian *gsg = NULL);
WindowFramework *open_window(const WindowProperties &props,
GraphicsPipe *pipe = NULL,