added texture class, changed shader extension names

Engine/engine/texture.h

@@ -0,0 +1,47 @@
+#pragma once
+
+#include <iostream>
+
+#include <glad/glad.h>
+#include <stb_image/stb_image.h>
+
+class Texture
+{
+public:
+	unsigned int ID;
+	int width, height, nrChannels;
+	
+	Texture(const char* texturePath, bool flip = false)
+	{
+		// Create the Texture and set our ID
+		glGenTextures(1, &ID);
+		glBindTexture(GL_TEXTURE_2D, ID);
+		
+		// set the texture wrapping/filtering options (on the currently bound texture object)
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);	
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+		
+		// Grab the texture from our path
+		if (flip)
+			stbi_set_flip_vertically_on_load(true);
+		
+		unsigned char *data = stbi_load(texturePath, &width, &height, &nrChannels, 0);
+		if (data)
+		{
+			GLenum format = (nrChannels == 4) ? GL_RGBA : GL_RGB;
+			glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, GL_UNSIGNED_BYTE, data);
+			glGenerateMipmap(GL_TEXTURE_2D);
+		}
+		else
+		{
+			std::cout << "Failed to load texture" << std::endl;
+		}
+		
+		if (flip)
+			stbi_set_flip_vertically_on_load(false);
+		
+		stbi_image_free(data);
+	}
+};