static int NDS_SetDisplayMode(_THIS, SDL_VideoDisplay *display, SDL_DisplayMode *mode)
{
display->driverdata = mode->driverdata;
#ifdef USE_HW_RENDERER
videoSetMode(MODE_5_3D);
videoSetModeSub(MODE_5_2D);
/* initialize gl2d */
glScreen2D();
vramSetBankA(VRAM_A_TEXTURE);
vramSetBankB(VRAM_B_TEXTURE );
vramSetBankC(VRAM_C_SUB_BG_0x06200000);
vramSetBankE(VRAM_E_TEX_PALETTE);
powerOn(POWER_ALL_2D);
irqInit();
irqEnable(IRQ_VBLANK);
// sub sprites hold the bottom image when 3D directed to top
initSubSprites();
// sub background holds the top image when 3D directed to bottom
bgInitSub(3, BgType_Bmp16, BgSize_B16_256x256, 0, 0);
#else
/* Select mode 5 for both screens. Can do Extended Rotation
* Background on both (BG 2 and 3). */
videoSetMode(MODE_5_2D);
videoSetModeSub(MODE_5_2D);
vramSetBankA(VRAM_A_MAIN_BG_0x06000000);
vramSetBankB(VRAM_B_TEXTURE );
vramSetBankC(VRAM_C_SUB_BG_0x06200000);
vramSetBankE(VRAM_E_TEX_PALETTE);
powerOn(POWER_ALL_2D);
irqInit();
irqEnable(IRQ_VBLANK);
#endif
return 0;
}
//-------------------------------------------------------
int main() {
//-------------------------------------------------------
videoSetMode(MODE_0_3D);
videoSetModeSub(MODE_5_2D);
glInit();
// sub sprites hold the bottom image when 3D directed to top
initSubSprites();
// sub background holds the top image when 3D directed to bottom
bgInitSub(3, BgType_Bmp16, BgSize_B16_256x256, 0, 0);
//-------------------------------------------------------
// Setup gl
//-------------------------------------------------------
glEnable(GL_ANTIALIAS);
glClearColor(0,0,0,31);
glClearPolyID(63);
glClearDepth(0x7FFF);
glViewport(0,0,255,191);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(70, 256.0 / 192.0, 0.1, 100);
glPolyFmt(POLY_ALPHA(31) | POLY_CULL_NONE);
//-------------------------------------------------------
// main loop
//-------------------------------------------------------
bool top = true;
while (true)
{
// wait for capture unit to be ready
while(REG_DISPCAPCNT & DCAP_ENABLE);
scanKeys();
int keys = keysDown();
if (keys & KEY_START) break;
//-------------------------------------------------------
// Switch render targets
//-------------------------------------------------------
top = !top;
if(top)
{
lcdMainOnBottom();
vramSetBankC(VRAM_C_LCD);
vramSetBankD(VRAM_D_SUB_SPRITE);
REG_DISPCAPCNT = DCAP_BANK(2) | DCAP_ENABLE | DCAP_SIZE(3);
}
else
{
lcdMainOnTop();
vramSetBankD(VRAM_D_LCD);
vramSetBankC(VRAM_C_SUB_BG);
REG_DISPCAPCNT = DCAP_BANK(3) | DCAP_ENABLE | DCAP_SIZE(3);
}
//-------------------------------------------------------
// Render the scene
//-------------------------------------------------------
glMatrixMode(GL_MODELVIEW);
renderScene(top);
glFlush(0);
}
return 0;
}
