40 lines
1.7 KiB
C++
40 lines
1.7 KiB
C++
#pragma once
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#include <map>
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#include <string>
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#include <glad/glad.h>
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#include "texture2d.h"
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#include "shader.h"
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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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{
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public:
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// resource storage
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static std::map<std::string, Shader> Shaders;
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static std::map<std::string, Texture2D> Textures;
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// loads (and generates) a shader program from file loading vertex, fragment (and geometry) shader's source code. If gShaderFile is not nullptr, it also loads a geometry shader
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static Shader LoadShader(const char *vShaderFile, const char *fShaderFile, const char *gShaderFile, std::string name);
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// retrieves a stored sader
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static Shader GetShader(std::string name);
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// loads (and generates) a texture from file
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static Texture2D LoadTexture(const char *file, bool alpha, std::string name);
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// retrieves a stored texture
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static Texture2D GetTexture(std::string name);
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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, that is we do not want any actual resource manager objects. Its members and functions should be publicly available (static).
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ResourceManager() { }
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// loads and generates a shader from file
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static Shader loadShaderFromFile(const char *vShaderFile, const char *fShaderFile, const char *gShaderFile = nullptr);
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// loads a single texture from file
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static Texture2D loadTextureFromFile(const char *file, bool alpha);
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}; |