C++ XMLNodePtr::FirstNode方法代码示例

int RetrieveNodeValue(XMLNodePtr root, std::string const & node_name, int default_value)
{
	XMLNodePtr node = root->FirstNode(node_name);
	if (node)
	{
		return RetrieveAttrValue(node, "value", default_value);
	}

	return default_value;
}

Offline::OfflineRenderDeviceCaps LoadPlatformConfig(std::string const & platform)
{
	ResIdentifierPtr plat = ResLoader::Instance().Open("PlatConf/" + platform + ".plat");

	KlayGE::XMLDocument doc;
	XMLNodePtr root = doc.Parse(plat);

	Offline::OfflineRenderDeviceCaps caps;

	caps.platform = RetrieveAttrValue(root, "name", "");
	caps.major_version = static_cast<uint8_t>(RetrieveAttrValue(root, "major_version", 0));
	caps.minor_version = static_cast<uint8_t>(RetrieveAttrValue(root, "minor_version", 0));

	caps.requires_flipping = RetrieveNodeValue(root, "requires_flipping", 0) ? true : false;
	std::string const fourcc_str = RetrieveNodeValue(root, "native_shader_fourcc", "");
	caps.native_shader_fourcc = (fourcc_str[0] << 0) + (fourcc_str[1] << 8) + (fourcc_str[2] << 16) + (fourcc_str[3] << 24);
	caps.native_shader_version = RetrieveNodeValue(root, "native_shader_version", 0);

	XMLNodePtr max_shader_model_node = root->FirstNode("max_shader_model");
	caps.max_shader_model = ShaderModel(static_cast<uint8_t>(RetrieveAttrValue(max_shader_model_node, "major", 0)),
		static_cast<uint8_t>(RetrieveAttrValue(max_shader_model_node, "minor", 0)));

	caps.max_texture_depth = RetrieveNodeValue(root, "max_texture_depth", 0);
	caps.max_texture_array_length = RetrieveNodeValue(root, "max_texture_array_length", 0);
	caps.max_pixel_texture_units = static_cast<uint8_t>(RetrieveNodeValue(root, "max_pixel_texture_units", 0));
	caps.max_simultaneous_rts = static_cast<uint8_t>(RetrieveNodeValue(root, "max_simultaneous_rts", 0));

	caps.standard_derivatives_support = RetrieveNodeValue(root, "standard_derivatives_support", 0) ? true : false;
	caps.shader_texture_lod_support = RetrieveNodeValue(root, "shader_texture_lod_support", 0) ? true : false;
	caps.fp_color_support = RetrieveNodeValue(root, "fp_color_support", 0) ? true : false;
	caps.pack_to_rgba_required = RetrieveNodeValue(root, "pack_to_rgba_required", 0) ? true : false;

	caps.gs_support = RetrieveNodeValue(root, "gs_support", 0) ? true : false;
	caps.cs_support = RetrieveNodeValue(root, "cs_support", 0) ? true : false;
	caps.hs_support = RetrieveNodeValue(root, "hs_support", 0) ? true : false;
	caps.ds_support = RetrieveNodeValue(root, "ds_support", 0) ? true : false;

	caps.bc4_support = RetrieveNodeValue(root, "bc4_support", 0) ? true : false;
	caps.bc5_support = RetrieveNodeValue(root, "bc5_support", 0) ? true : false;
	caps.frag_depth_support = RetrieveNodeValue(root, "frag_depth_support", 0) ? true : false;
	caps.ubo_support = RetrieveNodeValue(root, "ubo_support", 0) ? true : false;

	return caps;
}

void PackJTML(std::string const & jtml_name)
{
	Timer timer;

	ResIdentifierPtr jtml = ResLoader::Instance().Open(jtml_name);

	KlayGE::XMLDocument doc;
	XMLNodePtr root = doc.Parse(jtml);

	uint32_t n = root->AttribInt("num_tiles", 2048);
	uint32_t num_tiles = 1;
	while (num_tiles * 2 <= n)
	{
		num_tiles *= 2;
	}

	uint32_t tile_size = root->AttribInt("tile_size", 128);
	std::string fmt_str = root->AttribString("format", "");
	ElementFormat format = EF_ARGB8;
	if ("ARGB8" == fmt_str)
	{
		format = EF_ARGB8;
	}
	else if ("ABGR8" == fmt_str)
	{
		format = EF_ABGR8;
	}
	uint32_t pixel_size = NumFormatBytes(format);

	JudaTexturePtr juda_tex = MakeSharedPtr<JudaTexture>(num_tiles, tile_size, format);

	uint32_t level = juda_tex->TreeLevels() - 1;

	RenderFactory& rf = Context::Instance().RenderFactoryInstance();
	uint32_t attr = 0;
	for (XMLNodePtr node = root->FirstNode("image"); node; node = node->NextSibling("image"), ++ attr)
	{
		timer.restart();

		std::string name = node->AttribString("name", "");
		int32_t x = node->AttribInt("x", 0);
		int32_t y = node->AttribInt("y", 0);
		std::string address_u_str = node->AttribString("address_u", "wrap");
		std::string address_v_str = node->AttribString("address_v", "wrap");
		Color border_clr;
		border_clr.r() = node->AttribFloat("border_r", 0.0f);
		border_clr.g() = node->AttribFloat("border_g", 0.0f);
		border_clr.b() = node->AttribFloat("border_b", 0.0f);
		border_clr.a() = node->AttribFloat("border_a", 0.0f);
		uint32_t border_clr_u8;
		switch (format)
		{
		case EF_ARGB8:
			border_clr_u8 = border_clr.ARGB();
			break;

		case EF_ABGR8:
			border_clr_u8 = border_clr.ABGR();
			break;

		default:
			border_clr_u8 = 0;
			break;
		}

		TexAddressingMode addr_u, addr_v;
		std::shared_ptr<address_calculator> calc_u, calc_v;
		if ("mirror" == address_u_str)
		{
			addr_u = TAM_Mirror;
			calc_u = address_calculators[TAM_Mirror];
		}
		else if ("clamp" == address_u_str)
		{
			addr_u = TAM_Clamp;
			calc_u = address_calculators[TAM_Clamp];
		}
		else if ("border" == address_u_str)
		{
			addr_u = TAM_Border;
			calc_u = address_calculators[TAM_Border];
		}
		else
		{
			addr_u = TAM_Wrap;
			calc_u = address_calculators[TAM_Wrap];
		}
		if ("mirror" == address_v_str)
		{
			addr_v = TAM_Mirror;
			calc_v = address_calculators[TAM_Mirror];
		}
		else if ("clamp" == address_v_str)
		{
			addr_v = TAM_Clamp;
			calc_v = address_calculators[TAM_Clamp];
		}
		else if ("border" == address_v_str)
		{
			addr_v = TAM_Border;
//.........这里部分代码省略.........

		void SubThreadStage()
		{
			ResIdentifierPtr psmm_input = ResLoader::Instance().Open(ps_desc_.res_name);

			KlayGE::XMLDocument doc;
			XMLNodePtr root = doc.Parse(psmm_input);

			{
				XMLNodePtr particle_node = root->FirstNode("particle");
				{
					XMLNodePtr alpha_node = particle_node->FirstNode("alpha");
					ps_desc_.ps_data->particle_alpha_from_tex = alpha_node->Attrib("from")->ValueString();
					ps_desc_.ps_data->particle_alpha_to_tex = alpha_node->Attrib("to")->ValueString();
				}
				{
					XMLNodePtr color_node = particle_node->FirstNode("color");
					{
						Color from;
						XMLAttributePtr attr = color_node->Attrib("from");
						if (attr)
						{
							std::vector<std::string> strs;
							boost::algorithm::split(strs, attr->ValueString(), boost::is_any_of(" "));
							for (size_t i = 0; i < 3; ++ i)
							{
								if (i < strs.size())
								{
									boost::algorithm::trim(strs[i]);
									from[i] = static_cast<float>(atof(strs[i].c_str()));
								}
								else
								{
									from[i] = 0;
								}
							}
						}
						from.a() = 1;
						ps_desc_.ps_data->particle_color_from = from;

						Color to;
						attr = color_node->Attrib("to");
						if (attr)
						{
							std::vector<std::string> strs;
							boost::algorithm::split(strs, attr->ValueString(), boost::is_any_of(" "));
							for (size_t i = 0; i < 3; ++ i)
							{
								if (i < strs.size())
								{
									boost::algorithm::trim(strs[i]);
									to[i] = static_cast<float>(atof(strs[i].c_str()));
								}
								else
								{
									to[i] = 0;
								}
							}
						}
						to.a() = 1;
						ps_desc_.ps_data->particle_color_to = to;
					}
				}
			}

			{
				XMLNodePtr emitter_node = root->FirstNode("emitter");

				XMLAttributePtr type_attr = emitter_node->Attrib("type");
				if (type_attr)
				{
					ps_desc_.ps_data->emitter_type = type_attr->ValueString();
				}
				else
				{
					ps_desc_.ps_data->emitter_type = "point";
				}

				XMLNodePtr freq_node = emitter_node->FirstNode("frequency");
				if (freq_node)
				{
					XMLAttributePtr attr = freq_node->Attrib("value");
					ps_desc_.ps_data->frequency = attr->ValueFloat();
				}

				XMLNodePtr angle_node = emitter_node->FirstNode("angle");
				if (angle_node)
				{
					XMLAttributePtr attr = angle_node->Attrib("value");
					ps_desc_.ps_data->angle = attr->ValueInt() * DEG2RAD;
				}

				XMLNodePtr pos_node = emitter_node->FirstNode("pos");
				if (pos_node)
				{
					float3 min_pos(0, 0, 0);
					XMLAttributePtr attr = pos_node->Attrib("min");
					if (attr)
					{
						std::vector<std::string> strs;
						boost::algorithm::split(strs, attr->ValueString(), boost::is_any_of(" "));
//.........这里部分代码省略.........