working version of text rendering

openVulkanoCpp/Scene/FontAtlasGenerator.hpp

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+/*
+ * 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 <string>
+#include <map>
+#include "Scene/Texture.hpp"
+#include "msdfgen.h"
+#include "msdfgen-ext.h"
+#include "msdf-atlas-gen/msdf-atlas-gen.h"
+
+namespace OpenVulkano::Scene
+{
+	using namespace msdfgen;
+	using namespace msdf_atlas;
+	using namespace OpenVulkano::Scene;
+
+	struct GlyphInfo
+	{
+		GlyphGeometry geometry;
+		GlyphBox glyphBox;
+		Texture texture;
+	};
+
+	class FontAtlasGenerator
+	{
+	public:
+		void GenerateAtlas(const std::string& fontFile, const std::string& outputFile, const Charset& = Charset::ASCII);
+		std::map<unicode_t, GlyphInfo>& GetAtlasInfo() { return m_symbols; }
+	private:
+		std::pair<FreetypeHandle*, FontHandle*> GetHandlers(const std::string& fontFile);
+	private:
+		ImmediateAtlasGenerator<float, 1, sdfGenerator, BitmapAtlasStorage<msdfgen::byte, 1>> m_generator;
+		std::map<unicode_t, GlyphInfo> m_symbols;
+		std::string m_loadedFont;
+	};
+}