OSG初始化深度貼圖的代碼

//本來的colorTexture是顏色採樣,無法顯示深度,這裏換成深度貼圖
	colorTexture = new Texture2D;
	colorTexture->setTextureSize(width, height);
	colorTexture->setSourceFormat(GL_DEPTH_COMPONENT);
	colorTexture->setSourceType(GL_FLOAT);
	colorTexture->setInternalFormat(GL_DEPTH_COMPONENT24);
	colorTexture->setFilter(Texture2D::MIN_FILTER, Texture2D::NEAREST);
	colorTexture->setFilter(Texture2D::MAG_FILTER, Texture2D::NEAREST);
	colorTexture->setWrap(Texture::WRAP_S, Texture::CLAMP_TO_EDGE);
	colorTexture->setWrap(Texture::WRAP_T, Texture::CLAMP_TO_EDGE);

// 在緩存到貼圖時, 像機聲明緩存的內容是深度, 但顏色也是能夠的
	cameraLight->attach(Camera::DEPTH_BUFFER/*Arcadia test 2019-04-11 COLOR_BUFFER或DEPTH_BUFFER均可以*/
		, colorTexture.get(), 0, 0, false,
		0, 0);