Text Rendering WIP

SHADE_Engine/src/Assets/Asset Types/SHFontAsset.h

@@ -0,0 +1,44 @@
+/*************************************************************************//**
+ * \file    SHFontAsset.h
+ * \author  Brandon Mak
+ * \date    5 November 2022
+ * \brief
+ *
+ * Copyright (C) 2022 DigiPen Institute of Technology. Reproduction or
+ * disclosure of this file or its contents without the prior written consent
+ * of DigiPen Institute of Technology is prohibited.
+ *****************************************************************************/
+#pragma once
+
+#include "SHAssetData.h"
+#include "SH_API.h"
+#include <vector>
+#include <string>
+#include "msdf-atlas-gen/msdf-atlas-gen.h"
+
+namespace SHADE
+{
+  struct SH_API SHFontAsset : SHAssetData
+  {
+    /*-----------------------------------------------------------------------*/
+    /* MEMBER VARIABLES                                                      */
+    /*-----------------------------------------------------------------------*/
+    //! Individual glyph data
+    std::vector<msdf_atlas::GlyphGeometry> glyphData;
+
+    //! MSDF's data structure containing the raw data of the atlas
+    msdfgen::Bitmap<msdfgen::byte, 3> fontBitmap;
+
+    //! Used for getting data of the font
+    msdf_atlas::FontGeometry fontGeometry;
+
+    //! Handle to the font loaded. We will use this when we initialize font data.
+    //! This is mainly the asset part of fonts.
+    msdfgen::FontHandle* fontHandle;
+
+    //! Name of the shader file (without parent path)
+    std::string fontName;
+
+
+  };
+}

SHADE_Engine/src/Assets/Libraries/Loaders/SHFontLoader.cpp

@@ -0,0 +1,53 @@
+#include "SHpch.h"
+#include "SHFontLoader.h"
+#include "Assets/Asset Types/SHFontAsset.h"
+#include "Graphics/MiddleEnd/TextRendering/SHFreetypeInstance.h"
+
+namespace SHADE
+{
+  SHADE::SHAssetData* SHFontLoader::Load(AssetPath path)
+  {
+    //auto result = new SHFontAsset();
+
+    //// save the font name
+    //result->fontName = path.stem().stem().string();
+
+    //result->fontHandle = msdfgen::loadFont(SHFreetypeInstance::GetFreetypeHandle(), path.string().c_str());
+
+    ////result->fontGeometry = msdf_atlas::FontGeometry(&result->glyphData);
+
+    //result->fontGeometry.loadCharset(font, 1.0f, msdf_atlas::Charset::ASCII);
+
+    //// Apply MSDF edge coloring
+    //const double maxCornerAngle = 3.0;
+    //for (GlyphGeometry& glyph : glyphData)
+    //  glyph.edgeColoring(&msdfgen::edgeColoringInkTrap, maxCornerAngle, 0);
+
+    //TightAtlasPacker atlasPacker;
+    //atlasPacker.setDimensionsConstraint(TightAtlasPacker::DimensionsConstraint::SQUARE);
+
+    //atlasPacker.setMinimumScale(64.0);
+    //atlasPacker.setPixelRange(2.0);
+    //atlasPacker.setMiterLimit(1.0);
+    //atlasPacker.pack(glyphData.data(), static_cast<int>(glyphData.size()));
+
+
+    //int width = 0, height = 0;
+    //atlasPacker.getDimensions(width, height);
+
+    //ImmediateAtlasGenerator<float, 3, msdfGenerator, BitmapAtlasStorage<float, 3>> generator(width, height);
+    //GeneratorAttributes genAttribs;
+    //generator.setAttributes(genAttribs);
+    //generator.setThreadCount(4);
+    //generator.generate(glyphData.data(), static_cast<int>(glyphData.size()));
+
+
+    return nullptr;
+  }
+
+  void SHFontLoader::Write(SHAssetData const* data, AssetPath path)
+  {
+
+  }
+
+}

SHADE_Engine/src/Assets/Libraries/Loaders/SHFontLoader.h

@@ -0,0 +1,24 @@
+/*************************************************************************//**
+ * \file    SHSFontLoader.h
+ * \author  Loh Xiao Qi
+ * \date    23 10 2022
+ * \brief
+ *
+ * Copyright (C) 2022 DigiPen Institute of Technology. Reproduction or
+ * disclosure of this file or its contents without the prior written consent
+ * of DigiPen Institute of Technology is prohibited.
+ *****************************************************************************/
+
+#pragma once
+
+#include "Assets/Libraries/Loaders/SHAssetLoader.h"
+
+namespace SHADE
+{ 
+  struct SHFontLoader : SHAssetLoader
+  {
+
+    SHAssetData* Load(AssetPath path) override;
+    void Write(SHAssetData const* data, AssetPath path) override;
+  };
+}

SHADE_Engine/src/Graphics/MiddleEnd/Interface/SHGraphicsSystem.cpp

@@ -42,6 +42,7 @@ of DigiPen Institute of Technology is prohibited.
 #include "Graphics/SHVkUtil.h"
 #include "Graphics/RenderGraph/SHRenderGraphNodeCompute.h"
 #include "../Meshes/SHPrimitiveGenerator.h"
+#include "Graphics/MiddleEnd/TextRendering/SHFreetypeInstance.h"
 
 namespace SHADE
 {
@@ -380,6 +381,7 @@ namespace SHADE
 
   void SHGraphicsSystem::Exit(void)
   {
+    SHFreetypeInstance::Exit();
   }
 
 #pragma endregion INIT_EXIT

SHADE_Engine/src/Graphics/MiddleEnd/TextRendering/SHFontAtlasData.cpp

@@ -0,0 +1,7 @@
+#include "SHpch.h"
+#include "SHFontAtlasData.h"
+
+namespace SHADE
+{
+
+}

SHADE_Engine/src/Graphics/MiddleEnd/TextRendering/SHFontAtlasData.h

@@ -0,0 +1,7 @@
+#pragma once
+
+
+namespace SHADE
+{
+
+}

SHADE_Engine/src/Graphics/MiddleEnd/TextRendering/SHFreetypeInstance.cpp

@@ -0,0 +1,27 @@
+#include "SHpch.h"
+#include "SHFreetypeInstance.h"
+#include "msdf-atlas-gen/msdf-atlas-gen.h"
+#include "msdfgen-ext.h"
+
+namespace SHADE
+{
+
+  msdfgen::FreetypeHandle* SHFreetypeInstance::freetypeHandle = nullptr;
+
+  void SHFreetypeInstance::Init(void) noexcept
+  {
+    // initialize freetype
+    freetypeHandle = msdfgen::initializeFreetype();
+  }
+
+  void SHFreetypeInstance::Exit(void) noexcept
+  {
+    msdfgen::deinitializeFreetype(freetypeHandle);
+  }
+
+  msdfgen::FreetypeHandle* SHFreetypeInstance::GetFreetypeHandle(void) noexcept
+  {
+    return freetypeHandle;
+  }
+
+}

SHADE_Engine/src/Graphics/MiddleEnd/TextRendering/SHFreetypeInstance.h

@@ -0,0 +1,23 @@
+#pragma once
+
+namespace msdfgen
+{
+  class FreetypeHandle;
+}
+
+namespace SHADE
+{
+  class SHFreetypeInstance
+  {
+  private:
+    //! Only need this to be initialized once
+    static msdfgen::FreetypeHandle* freetypeHandle;
+
+  public:
+    static void Init (void) noexcept;
+    static void Exit (void) noexcept;
+
+    static msdfgen::FreetypeHandle* GetFreetypeHandle(void) noexcept;
+
+  };
+}