Graphics/3D/nehe/lesson01/source/nehe1.cpp

/****************************************
 *              NDS NeHe Lesson 01                      *
 *              Author: Dovoto                                  *
 ****************************************/

// include your ndslib
#include <nds.h>


int DrawGLScene();

int main() {
                
        // Setup the Main screen for 3D 
        videoSetMode(MODE_0_3D);
                
        // initialize the geometry engine
        glInit();
        
        // enable antialiasing
        glEnable(GL_ANTIALIAS);
        
        // setup the rear plane
        glClearColor(0,0,0,31); // BG must be opaque for AA to work
        glClearPolyID(63); // BG must have a unique polygon ID for AA to work
        glClearDepth(0x7FFF);
        
        // Set our viewport to be the same size as the screen
        glViewport(0,0,255,191);
        
        // setup the view
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        gluPerspective(70, 256.0 / 192.0, 0.1, 100);
        
        
        //ds specific, several attributes can be set here       
        glPolyFmt(POLY_ALPHA(31) | POLY_CULL_NONE);
        
        while (1) 
        {
                // Set the current matrix to be the model matrix
                glMatrixMode(GL_MODELVIEW);
                
                glColor3f(1, 1, 1);                                                                     // Set the color..not in nehe source...ds gl default will be black
                
                //Push our original Matrix onto the stack (save state)
                glPushMatrix(); 

                DrawGLScene();
                
                // Pop our Matrix from the stack (restore state)
                glPopMatrix(1);

                //a handy little built in function to wait for a screen refresh
                swiWaitForVBlank();

                // flush to screen      
                glFlush(0);
        
        }
        
        return 0;
}

int DrawGLScene(void)
{
        //we are going to use floating point for the tutorial...keep in mind the DS has no
        //floating point hardware.  For real life use the built in fixed point types.
        //this is where the magic happens
        glLoadIdentity();
        return TRUE;
}