vulkan: add FindLayer helper (50db9035) · Commits · e / os / android_frameworks_native-old

vulkan/libvulkan/layers_extensions.cpp

+20 −14

Original line number	Diff line number	Diff line
		@@ -342,6 +342,14 @@ void DiscoverLayersInDirectory(const std::string& dir_path) {
		closedir(directory);
		}

		const Layer* FindLayer(const std::vector<Layer>& layers, const char* name) {
		auto layer =
		std::find_if(layers.cbegin(), layers.cend(), [=](const Layer& entry) {
		return strcmp(entry.properties.layerName, name) == 0;
		});
		return (layer != layers.cend()) ? &*layer : nullptr;
		}

		void* GetLayerGetProcAddr(const Layer& layer,
		const char* gpa_name,
		size_t gpa_name_len) {
		@@ -363,27 +371,25 @@ void GetLayerExtensions(const std::vector<Layer>& layers,
		const char* name,
		const VkExtensionProperties** properties,
		uint32_t* count) {
		auto layer =
		std::find_if(layers.cbegin(), layers.cend(), [=](const Layer& entry) {
		return strcmp(entry.properties.layerName, name) == 0;
		});
		if (layer == layers.cend()) {
		*properties = nullptr;
		*count = 0;
		} else {
		const Layer* layer = FindLayer(layers, name);
		if (layer) {
		*properties = layer->extensions.data();
		*count = static_cast<uint32_t>(layer->extensions.size());
		} else {
		*properties = nullptr;
		*count = 0;
		}
		}

		LayerRef GetLayerRef(std::vector<Layer>& layers, const char* name) {
		for (uint32_t id = 0; id < layers.size(); id++) {
		if (strcmp(name, layers[id].properties.layerName) == 0) {
		LayerLibrary& library = g_layer_libraries[layers[id].library_idx];
		return LayerRef((library.Open()) ? &layers[id] : nullptr);
		}
		const Layer* layer = FindLayer(layers, name);
		if (layer) {
		LayerLibrary& library = g_layer_libraries[layer->library_idx];
		if (!library.Open())
		layer = nullptr;
		}
		return LayerRef(nullptr);

		return LayerRef(layer);
		}

		} // anonymous namespace