texturing.....

For your first question:
Let's say you loaded your bitmap already into an array
unsigned char *bmpData = new unsigned char[Size*Size*3];

then what you want to do now is create another array with the alpha channel, copy the pixel data, and then for each pixel that is black, set the alpha channel to 0.

unsigned char *newData = new unsigned char[Size*Size*4];

for(int i=0; i < Size; i++)
for(int j=0; j < Size; j++) {
newData[(i*Size+j)*4+0] = bmpData[(i*Size+j)*3+0];
newData[(i*Size+j)*4+1] = bmpData[(i*Size+j)*3+1];
newData[(i*Size+j)*4+2] = bmpData[(i*Size+j)*3+2];

if(bmpData[(i*Size+j)*3+0] == 0 && bmpData[(i*Size+j)*3+1] == 0) && bmpData[(i*Size+j)*3+2] == 0)
newData[(i*Size+j)*4+3] = 0;
else
newData[(i*Size+j)*4+3] = 255;
}

Then in OpenGL just call the following functions:
glEnable(GL_ALPHA_TEST);
glAlphaFunc(GL_NEQUAL, 0);

Also, when you create the OpenGL Texture Object, make sure you pass GL_RGBA to glTexParameteri and not GL_RGB



For the frames per second do the following in your main loop

// declare before main loop
int curTick=GetTickCount(), startTick=curTick;
int frames=0;

//main loop
while(1) {

frames++;
curTick=GetTickCount();
if(curTick-startTick > 1000) {
startTick=curTick;
SetWindowText("Frames Per Second=" + frames);
frames=0;
}
}



And that should work :-)

tx alot for answering me :)
but in second i am using glut for the window project not windows.h

oh it doesn't matter, you can still use the GetTickCount function. It shouldn't matter. Just include windows.h in your project.

But if you really don't want to use it, you can also use glut's glutTimerFunc().

The code would pretty much be the same, increment frame++ in your main loop. But instead of displaying the frames per second in your main loop, do it inside the glutTimerFunc and have it execute every second.

Here's a FAQ on it http://www.opengl.org/resources/faq/technical/glut.htm

thank you :)
bye!
ff8