3DGameEngine/Texture.h at master · wltu/3DGameEngine · GitHub

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#pragma once
#include<iostream>
#include<fstream>
#include<string>

#include<glew.h>
#include<glfw3.h>
#include<SOIL2.h>

using namespace std;

class Texture {
	private:
		GLuint id;
		int height;
		int width;
		unsigned int type;

	public:
		Texture(const char* fileName, GLenum type) {
			this->type = type;
			unsigned char* image = SOIL_load_image(fileName, &this->width, &this->height, NULL, SOIL_LOAD_RGBA);

			GLuint texture0;
			glGenTextures(1, &this->id);
			glBindTexture(type, this->id);

			// Opotions
			glTexParameteri(type, GL_TEXTURE_WRAP_S, GL_REPEAT);
			glTexParameteri(type, GL_TEXTURE_WRAP_T, GL_REPEAT);
			glTexParameteri(type, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
			glTexParameteri(type, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

			if (image) {
				glTexImage2D(type, 0, GL_RGBA, this->width, this->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image);
				glGenerateMipmap(type);
			}
			else {
				cout << "ERROR::TEXTURE:COULD_NOT_LOAD_TEXTURE: " << fileName << endl;
			}

			glActiveTexture(0);
			glBindTexture(type, 0);
			SOIL_free_image_data(image);
		}

		~Texture() {
			glDeleteTextures(1 , &this->id);
		}

		inline GLuint getID() const { return this->id;}

		void bind(const GLint texture_unit) {
			glActiveTexture(GL_TEXTURE0 + texture_unit);
			glBindTexture(type, this->id);
		}

		void unbind() {
			glActiveTexture(0);
			glBindTexture(this->type, 0);
		}


		void loadFromFile(const char* fileName){
			if (this->id) {
				glDeleteTextures(1, &this->id);
			}
			unsigned char* image = SOIL_load_image(fileName, &this->width, &this->height, NULL, SOIL_LOAD_RGBA);

			GLuint texture0;
			glGenTextures(1, &this->id);
			glBindTexture(this->type, this->id);

			// Opotions
			glTexParameteri(this->type, GL_TEXTURE_WRAP_S, GL_REPEAT);
			glTexParameteri(this->type, GL_TEXTURE_WRAP_T, GL_REPEAT);
			glTexParameteri(this->type, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
			glTexParameteri(this->type, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

			if (image) {
				glTexImage2D(this->type, 0, GL_RGBA, this->width, this->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image);
				glGenerateMipmap(this->type);
			}
			else {
				cout << "ERROR::TEXTURE:COULD_NOT_LOAD_TEXTURE: " << fileName << endl;
			}

			glActiveTexture(0);
			glBindTexture(type, 0);
			SOIL_free_image_data(image);
		}
};