Graphics/3D/Display_List/source/main.cpp

#include <nds.h>


//display list
u32 triangle[] = 
{
        12,
        FIFO_COMMAND_PACK(FIFO_BEGIN, FIFO_COLOR, FIFO_VERTEX16, FIFO_COLOR),
        GL_TRIANGLE,
        RGB15(31,0,0),
        VERTEX_PACK(inttov16(-1),inttov16(-1)), VERTEX_PACK(0,0),
        RGB15(0,31,0),
        FIFO_COMMAND_PACK(FIFO_VERTEX16, FIFO_COLOR, FIFO_VERTEX16, FIFO_END),
        VERTEX_PACK(inttov16(1),inttov16(-1)), VERTEX_PACK(0,0),
        RGB15(0,0,31),
        VERTEX_PACK(inttov16(0),inttov16(1)), VERTEX_PACK(0,0),
};

int main()
{       
        
        float rotateX = 0.0;
        float rotateY = 0.0;
        
        //set mode 0, enable BG0 and set it to 3D
        videoSetMode(MODE_0_3D);
        
        // initialize gl
        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);
        
        //this should work the same as the normal gl call
        glViewport(0,0,255,191);
        
        
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        gluPerspective(70, 256.0 / 192.0, 0.1, 40);
        
        gluLookAt(      0.0, 0.0, 1.0,          //camera possition 
                                0.0, 0.0, 0.0,          //look at
                                0.0, 1.0, 0.0);         //up
        
        while(1)                
        {
                glPushMatrix();
                
                //move it away from the camera
                glTranslate3f32(0, 0, floattof32(-1));
                
                glRotateX(rotateX);
                glRotateY(rotateY);
                
                glMatrixMode(GL_TEXTURE);
                glLoadIdentity();
                
                glMatrixMode(GL_MODELVIEW);
                
                
                //not a real gl function and will likely change
                glPolyFmt(POLY_ALPHA(31) | POLY_CULL_NONE);
                
                scanKeys();
                
                u16 keys = keysHeld();
                
                if((keys & KEY_UP)) rotateX += 3;
                if((keys & KEY_DOWN)) rotateX -= 3;
                if((keys & KEY_LEFT)) rotateY += 3;
                if((keys & KEY_RIGHT)) rotateY -= 3;
                
                glCallList(triangle);   
                
                glPopMatrix(1);
                
                glFlush(0);
                
        }
        
        return 0;
}//end main