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add gl-swapbuffer-framelock option

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This commit is contained in:
cxgeorge 2002-05-21 02:01:56 +00:00
parent c904bcfc31
commit 5f138be59a
4 changed files with 44 additions and 0 deletions
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3
panda/src/wgldisplay/config_wgldisplay.cxx
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@ -47,6 +47,9 @@ bool bResponsive_minimized_fullscreen_window = config_wgldisplay.GetBool("respon
// will crab out WireGL.
bool support_wiregl = config_wgldisplay.GetBool("support-wiregl", false);
// Set this true to enable HW swapbuffer frame-lock on 3dlabs cards
bool gl_swapbuffer_framelock = config_wgldisplay.GetBool("gl-swapbuffer-framelock", false);
// if true, use ddraw's GetAvailVidMem to fail if driver says it has too little video mem
bool gl_do_vidmemsize_check = config_wgldisplay.GetBool("do-vidmemsize-check", true);

1
panda/src/wgldisplay/config_wgldisplay.h
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@ -34,6 +34,7 @@ extern Filename get_mono_cursor_filename_2();
extern bool gl_show_fps_meter;
extern float gl_fps_meter_update_interval;
extern bool gl_sync_video;
extern bool gl_swapbuffer_framelock;
extern int gl_forced_pixfmt;
extern bool bResponsive_minimized_fullscreen_window;
extern bool gl_do_vidmemsize_check;

25
panda/src/wgldisplay/wglGraphicsWindow.cxx
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@ -620,6 +620,31 @@ void wglGraphicsWindow::config() {
if (wgldisplay_cat.is_spam())
wgldisplay_cat.spam() << "GL extensions: " << _extensions_str << endl;
if(gl_swapbuffer_framelock) {
// utilize HW-assisted framelocking if available (3dLabs ext)
WGLENABLEFRAMELOCKI3DFUNCPTR wglEnableFrameLock = (WGLENABLEFRAMELOCKI3DFUNCPTR) wglGetProcAddress("wglEnableFrameLockI3D");
if(wglEnableFrameLock==NULL) {
wgldisplay_cat.fatal() << "wglEnableFrameLockI3D not found in OpenGL ICD, cannot implement gl-swapbuffer-framelock!\n";
exit(1);
} else {
BOOL result = wglEnableFrameLock();
if(!result) {
wgldisplay_cat.fatal() << "wglEnableFrameLockI3D failed, error=" << GetLastError() << endl;
exit(1);
}
}
if(wgldisplay_cat.is_debug()) {
WGLQUERYFRAMELOCKMASTERI3DFUNCPTR wglQueryFrameLockMasterI3D = (WGLQUERYFRAMELOCKMASTERI3DFUNCPTR) wglGetProcAddress("wglQueryFrameLockMasterI3D");
BOOL bIsMaster;
if((wglQueryFrameLockMasterI3D!=NULL) && wglQueryFrameLockMasterI3D(&bIsMaster))
wgldisplay_cat.debug() << "SwapBuffer Frame-locking Enabled, HW wired as framelock " << (bIsMaster ? "Master" : "Slave") << endl;
}
gl_sync_video=true; // you want gl_sync_video if you want framelock, right?
}
if (gl_sync_video) {
// set swapbuffers to swap no more than once per monitor refresh
// note sometimes the ICD advertises this ext, but it still doesn't seem to work

15
panda/src/wgldisplay/wglext.h
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@ -391,6 +391,21 @@ typedef void * (APIENTRY * PFNWGLALLOCATEMEMORYNVPROC) (int size, float readfreq
typedef void (APIENTRY * PFNWGLFREEMEMORYNVPROC) (void *pointer);
#endif
// added from 3dlabs glext.h
/*
* Constants and typedefs for the WGL swap_frame_usage extension.
*/
typedef BOOL (APIENTRY *WGLGETFRAMEUSAGEI3DFUNCPTR)(float *);
/*
* Constants and typedefs for the WGL swap_frame_lock extension.
*/
typedef BOOL (APIENTRY *WGLENABLEFRAMELOCKI3DFUNCPTR)(VOID);
typedef BOOL (APIENTRY *WGLDISABLEFRAMELOCKI3DFUNCPTR)(VOID);
typedef BOOL (APIENTRY *WGLISENABLEDFRAMELOCKI3DFUNCPTR)(BOOL *);
typedef BOOL (APIENTRY *WGLQUERYFRAMELOCKMASTERI3DFUNCPTR)(BOOL *);
#ifdef __cplusplus
}