Visual Update for computeparticles

Instead of using a small amount of large textured particles, use a large
amount of small monochrome particles.
Which uses a new vulkanexamplebase functionality of creating and
updating a only device visible buffer via a temporary staging buffer.

base/vulkanexamplebase.h

@@ -271,6 +271,20 @@ public:
 	// Load a SPIR-V shader
 	VkPipelineShaderStageCreateInfo loadShader(std::string fileName, VkShaderStageFlagBits stage);
 	
+	// create device local buffer and use staging to access
+	VkBool32 createDeviceBuffer(
+		const VkBufferUsageFlags usage,
+		const VkDeviceSize size,
+		VkBuffer& buffer,
+		VkDeviceMemory& memory,
+		VkDescriptorBufferInfo& descriptor);
+
+	// update loacal buffer memory by creating a host visible staging buffer
+	VkBool32 updateDeviceBuffer(
+		const VkDeviceSize size,
+		VkBuffer& deviceBuffer,
+		void* data);
+	
 	// Create a buffer, fill it with data (if != NULL) and bind buffer memory
 	VkBool32 createBuffer(
 		VkBufferUsageFlags usageFlags,