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#include <stdio.h>
#include <math.h>
#include <string.h>
#include <stdlib.h>
#ifdef WIN32
#include <windows.h>
#else
#include <sys/time.h>
#endif
#include "fpscount.h"
#include "../demolib_prefs.h"
#include "../image/image.h"
#include "../exception.h"
#if DEMOLIB_FPSCOUNTER
#include <GL/gl.h>
FPSCounter::FPSCounter()
{
Image *digits = load_image("digitsxp.png");
memcpy(this->digits_bm, digits->get_pixel_data(), 128 * 16 * 4);
delete digits;
this->reset();
}
FPSCounter::~FPSCounter()
{
}
void FPSCounter::reset()
{
#ifdef WIN32
this->tv[0] = GetTickCount();
this->tv[1] = GetTickCount();
this->tv[2] = GetTickCount();
this->tv[3] = GetTickCount();
this->tv[4] = GetTickCount();
this->tv[5] = GetTickCount();
this->tv[6] = GetTickCount();
this->tv[7] = GetTickCount();
this->tv[8] = GetTickCount();
this->tv[9] = GetTickCount();
#else
gettimeofday(&(this->tv[0]), NULL);
gettimeofday(&(this->tv[1]), NULL);
gettimeofday(&(this->tv[2]), NULL);
gettimeofday(&(this->tv[3]), NULL);
gettimeofday(&(this->tv[4]), NULL);
gettimeofday(&(this->tv[5]), NULL);
gettimeofday(&(this->tv[6]), NULL);
gettimeofday(&(this->tv[7]), NULL);
gettimeofday(&(this->tv[8]), NULL);
gettimeofday(&(this->tv[9]), NULL);
#endif
}
float FPSCounter::getfps()
{
float fps;
#ifdef WIN32
long now;
// QueryPerformanceCounter((LARGE_INTEGER*)&now);
now = GetTickCount();
#else
struct timeval now;
gettimeofday(&now, NULL);
#endif
#ifdef WIN32
fps = 10000.0f / (float)((now - this->tv[0]));
#else
fps = 10000000.0f /
(float)((now.tv_sec - this->tv[0].tv_sec) * 1000000 +
(now.tv_usec - this->tv[0].tv_usec));
#endif
tv[0] = tv[1];
tv[1] = tv[2];
tv[2] = tv[3];
tv[3] = tv[4];
tv[4] = tv[5];
tv[5] = tv[6];
tv[6] = tv[7];
tv[7] = tv[8];
tv[8] = tv[9];
tv[9] = now;
return fps;
}
void FPSCounter::draw()
{
char fpsstring[10];
int i;
// GLuint texnum;
float fps = this->getfps();
sprintf(fpsstring, "%6.2ffps", fps);
memset(texbuf, 0x00, 64*16*4);
for (i = 0; i <= 8; i++) {
int offs = 0;
if (fpsstring[i] == ' ') continue;
switch (fpsstring[i]) {
case '0': offs = 0; break;
case '1': offs = 6; break;
case '2': offs = 12; break;
case '3': offs = 18; break;
case '4': offs = 24; break;
case '5': offs = 30; break;
case '6': offs = 36; break;
case '7': offs = 42; break;
case '8': offs = 48; break;
case '9': offs = 54; break;
case '.': offs = 60; break;
case 'f': offs = 66; break;
case 'p': offs = 72; break;
case 's': offs = 78; break;
}
for (int y = 0; y < 10; y++) {
memcpy(this->texbuf + y*64*4 + i*6*4, this->digits_bm + y*128*4 + offs*4, 24);
}
}
/*glGenTextures(1, &texnum); */
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, 64, 16, 0, GL_RGBA, GL_UNSIGNED_BYTE, this->texbuf);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glOrtho(0.0f,1.0f,0.0f,1.0f,0.0f,10.0f);
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
glEnable(GL_TEXTURE_2D);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_QUADS);
glTexCoord2f(0.0f,1.0f);
glVertex3f(0.8f,0.9f,0.0f);
glTexCoord2f(1.0f,1.0f);
glVertex3f(1.0f,0.9f,0.0f);
glTexCoord2f(1.0f,0.0f);
glVertex3f(1.0f,1.0f,0.0f);
glTexCoord2f(0.0f,0.0f);
glVertex3f(0.8f,1.0f,0.0f);
glEnd();
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
// glDeleteTextures(1, &texnum);
}
#endif
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