The MyScene function calls the MakeMyLights function to create the directional and ambient lights used in Helworld.c. MakeMyLights calls the IDirect3DRM::CreateLightRGB and IDirect3DRMFrame::AddLight methods to create a bright directional light and add it to a light frame, and to create a dim ambient light and add it to the entire scene. (Ambient lights are always associated with an entire scene.)
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//
// MakeMyLights
// Create lights used in the scene.
//
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void MakeMyLights(LPDIRECT3DRMFRAME lpScene, LPDIRECT3DRMFRAME lpCamera,
LPDIRECT3DRMFRAME lpLightFrame1,
LPDIRECT3DRMLIGHT * lplpLight1, LPDIRECT3DRMLIGHT * lplpLight2)
{
lpD3DRM->lpVtbl->CreateLightRGB(lpD3DRM, D3DRMLIGHT_DIRECTIONAL,
D3DVAL(0.9), D3DVAL(0.9), D3DVAL(0.9), lplpLight1);
lpLightFrame1->lpVtbl->AddLight(lpLightFrame1, *lplpLight1);
lpD3DRM->lpVtbl->CreateLightRGB(lpD3DRM, D3DRMLIGHT_AMBIENT,
D3DVAL(0.1), D3DVAL(0.1), D3DVAL(0.1), lplpLight2);
lpScene->lpVtbl->AddLight(lpScene, *lplpLight2);
}