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add fps meter

This commit is contained in:
cxgeorge 2001-05-03 06:23:27 +00:00
parent a2c3324c91
commit 5537dd5eee
4 changed files with 98 additions and 13 deletions
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3
panda/src/wgldisplay/config_wgldisplay.cxx
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@ -16,6 +16,9 @@ ConfigureFn(config_wgldisplay) {
init_libwgldisplay();
}
bool gl_show_fps_meter = config_wgldisplay.GetBool("show-fps-meter", false);
float gl_fps_meter_update_interval = max(0.5,config_wgldisplay.GetFloat("fps-meter-update-interval", 1.7));
////////////////////////////////////////////////////////////////////
// Function: init_libwgldisplay
// Description: Initializes the library. This must be called at

2
panda/src/wgldisplay/config_wgldisplay.h
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@ -13,6 +13,8 @@
NotifyCategoryDecl(wgldisplay, EXPCL_PANDAGL, EXPTP_PANDAGL);
extern Filename get_icon_filename_();
extern bool gl_show_fps_meter;
extern float gl_fps_meter_update_interval;
extern EXPCL_PANDAGL void init_libwgldisplay();

100
panda/src/wgldisplay/wglGraphicsWindow.cxx
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@ -12,6 +12,7 @@
#include <glGraphicsStateGuardian.h>
#include <errno.h>
#include <time.h>
#include <mmsystem.h>
#ifdef DO_PSTATS
#include <pStatTimer.h>
@ -25,6 +26,8 @@ TypeHandle wglGraphicsWindow::_type_handle;
#define MOUSE_ENTERED 0
#define MOUSE_EXITED 1
#define FONT_BITMAP_OGLDISPLAYLISTNUM 1000 // some arbitrary #
////////////////////////////////////////////////////////////////////
// Function: Constructor
// Access:
@ -52,7 +55,10 @@ wglGraphicsWindow(GraphicsPipe* pipe, const
// Description:
////////////////////////////////////////////////////////////////////
wglGraphicsWindow::~wglGraphicsWindow(void) {
// DestroyWindow(_mwindow);
if(gl_show_fps_meter)
glDeleteLists(FONT_BITMAP_OGLDISPLAYLISTNUM, 128);
if(_visual!=NULL)
free(_visual);
@ -768,19 +774,27 @@ void wglGraphicsWindow::config(void) {
make_current();
make_gsg();
//#ifdef _DEBUG
#if 1
const GLubyte *vendorname=glGetString(GL_VENDOR);
if(vendorname!=NULL) {
if(strncmp((const char *)vendorname,"Microsoft",9)==0) {
wgldisplay_cat.info() << "wglGraphicsWindow:: GL VendorID: " << glGetString(GL_VENDOR) << " (Software Rendering)" << endl;
} else {
wgldisplay_cat.info() << "wglGraphicsWindow:: GL VendorID: " << glGetString(GL_VENDOR) << endl;
}
} else {
wgldisplay_cat.info() << "wglGraphicsWindow:: glGetString(GL_VENDOR) returns NULL!!!\n";
if(gl_show_fps_meter) {
// 128 handles all the ascii chars
// this creates a display list for each char. displist numbering starts
// at FONT_BITMAP_OGLDISPLAYLISTNUM. Might want to optimize just to save
// mem by just allocing bitmaps for chars we need (0-9 fps,SPC)
wglUseFontBitmaps(_hdc, 0, 128, FONT_BITMAP_OGLDISPLAYLISTNUM);
}
if(wgldisplay_cat.is_debug()) {
const GLubyte *vendorname=glGetString(GL_VENDOR);
if(vendorname!=NULL) {
if(strncmp((const char *)vendorname,"Microsoft",9)==0) {
wgldisplay_cat.debug() << "wglGraphicsWindow:: GL VendorID: " << glGetString(GL_VENDOR) << " (Software Rendering)" << endl;
} else {
wgldisplay_cat.debug() << "wglGraphicsWindow:: GL VendorID: " << glGetString(GL_VENDOR) << endl;
}
} else {
wgldisplay_cat.info() << "wglGraphicsWindow:: glGetString(GL_VENDOR) returns NULL!!!\n";
}
}
#endif
}
////////////////////////////////////////////////////////////////////
@ -850,6 +864,65 @@ void wglGraphicsWindow::setup_colormap(void) {
// Description: Swaps the front and back buffers.
////////////////////////////////////////////////////////////////////
void wglGraphicsWindow::end_frame(void) {
if(gl_show_fps_meter) {
DWORD now = timeGetTime(); // this is win32 fn
float time_delta = (now - _start_time)/1000.0;
if(time_delta > gl_fps_meter_update_interval) {
// didnt use global clock object, it wasnt working properly when I tried,
// its probably slower due to cache faults, and I can easily track all the
// info I need in dxgsg
DWORD num_frames = _cur_frame_count - _start_frame_count;
_current_fps = num_frames / time_delta;
_start_time = now;
_start_frame_count = _cur_frame_count;
}
char fps_msg[20];
sprintf(fps_msg, "%7.02f fps", _current_fps);
// Note: we cant use simple GDI TextOut calls to draw FPS meter chars (like DX fps meter)
// because WGL doesnt support GDI in double-buffered mode. Instead we have to
// use glBitMap display lists created by wglUseFontBitmaps
glColor3f(0.0,1.0,1.0);
GLboolean tex_was_on = glIsEnabled(GL_TEXTURE_2D);
if(tex_was_on)
glDisable(GL_TEXTURE_2D);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadMatrixf(LMatrix4f::ident_mat().get_data());
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadMatrixf(LMatrix4f::ident_mat().get_data());
glOrtho(_props._xorg,_props._xorg+_props._xsize,
_props._yorg,_props._yorg+_props._ysize,-1.0,1.0);
glRasterPos2f(_props._xsize-75,_props._ysize-20); // these seem to be good for default font
// set up for a string-drawing display list call
glListBase(FONT_BITMAP_OGLDISPLAYLISTNUM);
// draw a string using font display lists. chars index their corresponding displist name
glCallLists(strlen(fps_msg), GL_UNSIGNED_BYTE, fps_msg);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
if(tex_was_on)
glEnable(GL_TEXTURE_2D);
_cur_frame_count++; // only used by fps meter right now
}
{
#ifdef DO_PSTATS
PStatTimer timer(_swap_pcollector);
@ -865,6 +938,7 @@ void wglGraphicsWindow::end_frame(void) {
// Description:
////////////////////////////////////////////////////////////////////
void wglGraphicsWindow::handle_reshape(int w, int h) {
// bugbug: this is not current working right??
if (_props._xsize != w || _props._ysize != h) {
_props._xsize = w;
_props._ysize = h;

6
panda/src/wgldisplay/wglGraphicsWindow.h
View File

@ -113,6 +113,12 @@ private:
bool _ignore_key_repeat;
int _full_height, _full_width;
// vars for frames/sec meter
DWORD _start_time;
DWORD _start_frame_count;
DWORD _cur_frame_count;
float _current_fps;
public:
static TypeHandle get_class_type(void);
static void init_type(void);