What texture file formats does GLFW support?
Note that the image and texture loading facilities are deprecated and have been removed in GLFW 3.0. Through the glfwReadImage and glfwLoadTexture2D functions, GLFW supports the Truevision Targa version 1 (TGA) file format. Supported pixel formats are: 8-bit gray-scale, 24-bit RGB, 32-bit RGBA and colormap (24/32-bit colors). Note that colormap images are always converted to 24-bit or 32-bit true color. Files that are RLE encoded (compressed) are also supported.