implement png image loader and refactor existing loader classes

openVulkanoCpp/Image/ImageLoader.cpp

@@ -0,0 +1,53 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include "ImageLoader.hpp"
+#include "Base/Logger.hpp"
+#include <memory>
+
+#define STB_IMAGE_IMPLEMENTATION
+#include <stb_image.h>
+
+namespace OpenVulkano::Image
+{
+	std::unique_ptr<Image> IImageLoader::loadData(const uint8_t* data, int size, int desiredChannels)
+	{
+		Image result;
+		int rows, cols, channels;
+		stbi_set_flip_vertically_on_load(true);
+		uint8_t* pixelData = stbi_load_from_memory(data, static_cast<int>(size), &rows, &cols, &channels, desiredChannels);
+		if (desiredChannels != 0 && channels < desiredChannels)
+		{
+			Logger::INPUT->warn(
+			"Stbi load image channels mismatch. Desired channels = {}, actual amount of channels in image = {}",
+			desiredChannels, channels);
+		}
+		result.data = OpenVulkano::Array<uint8_t>(cols * rows * channels);
+		switch (channels)
+		{
+			case 1:
+				result.dataFormat = OpenVulkano::DataFormat::R8_UNORM;
+				break;
+			case 2:
+				result.dataFormat = OpenVulkano::DataFormat::R8G8_UNORM;
+				break;
+			case 3:
+				result.dataFormat = OpenVulkano::DataFormat::R8G8B8_UNORM;
+				break;
+			case 4:
+				result.dataFormat = OpenVulkano::DataFormat::R8G8B8A8_UNORM;
+				break;
+		}
+		result.resolution.x = cols;
+		result.resolution.y = rows;
+		result.resolution.z = 1;
+		std::memcpy(result.data.Data(), pixelData, result.data.Size());
+		stbi_image_free(pixelData);
+		return std::make_unique<Image>(std::move(result));
+	}
+}