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67 lines
2.9 KiB
C++
67 lines
2.9 KiB
C++
// Copyright [2023] Krzysztof Rudnicki
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/*******************************************************************
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** This code is part of Breakout.
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**
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** Breakout is free software: you can redistribute it and/or modify
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** it under the terms of the CC BY 4.0 license as published by
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** Creative Commons, either version 4 of the License, or (at your
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** option) any later version.
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******************************************************************/
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#ifndef HOME_KUCHY_ENGINEER_THESIS_WUT_BREAKOUT_RESOURCEMANAGER_HPP
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#define HOME_KUCHY_ENGINEER_THESIS_WUT_BREAKOUT_RESOURCEMANAGER_HPP
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#include "../dependencies/include/glad/glad.h"
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#include "../breakout/shader.hpp"
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#include "../breakout/texture.hpp"
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// A static singleton ResourceManager class that hosts several
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// functions to load Textures and Shaders. Each loaded texture
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// and/or shader is also stored for future reference by string
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// handles. All functions and resources are static and no
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// public constructor is defined.
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class ResourceManager {
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public:
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// resource storage
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template <> static std::max<std::string, Shader>;
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Shaders{};
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template <> static std::max<std::string, Texture2D>;
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Textures{};
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// loads (and generates) a shader program from file loading vertex,
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// fragment (and geometry) shader's source code.
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// If gShaderFile is not nullptr, it also loads a geometry shader
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static auto LoadShader(const char *vShaderFile, const char *fShaderFile,
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const char *gShaderFile, const std::string &name)
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-> Shader;
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// retrieves a stored sader
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static auto GetShader(const std::string &name) -> Shader;
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// loads (and generates) a texture from file
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static auto LoadTexture(const char *file, bool alpha, const std::string &name)
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-> Texture2D;
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// retrieves a stored texture
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static auto GetTexture(const std::string &name) -> Texture2D;
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// properly de-allocates all loaded resources
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static void Clear();
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private:
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// private constructor,
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// that is we do not want any actual resource manager objects.
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// Its members and functions should be publicly available (static).
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ResourceManager() = default;
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// loads and generates a shader from file
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static Shader ResourceManager::createShaderObject(
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std::string vertexCode, std::string fragmentCode,
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const char *gShaderFile, std::string geometryCode);
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static std::string ResourceManager::loadFragmentCode(const char *fShaderFile);
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static std::string ResourceManager::loadVertexCode(const char *vShaderFile);
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static std::string ResourceManager::loadGeometryCode(const char *gShaderFile);
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static auto loadShaderFromFile(const char *vShaderFile,
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const char *fShaderFile,
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const char *gShaderFile) -> Shader;
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// loads a single texture from file
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static Texture2D ResourceManager::createTextureObject();
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static auto loadTextureFromFile(const char *file, bool alpha) -> Texture2D;
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};
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#endif // HOME_KUCHY_ENGINEER_THESIS_WUT_BREAKOUT_RESOURCEMANAGER_HPP
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