[#79] Changed memory usage for staging buffers

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

src/vkcv/BufferManager.cpp

@@ -49,7 +49,7 @@ namespace vkcv {
 				usageFlags = vk::BufferUsageFlagBits::eIndexBuffer;
 				break;
 			default:
-				// TODO: maybe an issue
+				vkcv_log(LogLevel::WARNING, "Unknown buffer type");
 				break;
 		}
 		
@@ -81,6 +81,10 @@ namespace vkcv {
 				break;
 		}
 		
+		if (type == BufferType::STAGING) {
+			memoryUsage = vma::MemoryUsage::eCpuToGpu;
+		}
+		
 		auto bufferAllocation = allocator.createBuffer(
 				vk::BufferCreateInfo(createFlags, size, usageFlags),
 				vma::AllocationCreateInfo(