git clone 'https://github.com/fisxoj/cl-tga.git'
Cl-tga was written to facilitate loading .tga files into OpenGL programs. It's a very simple library, and, at the moment, only supports non-RLE encoded forms of the files, though it shouldn't be hard to fix that.
Cl-tga does not re-order the color bytes from the file body. tga files are econded in bgr byte-order, and so loading code using cl-opengl should specify the :bgr or :bgra data format in order to not have wonky looking textures, eg.:
(gl:tex-image-2d :texture-2d 0 :rgba (tga:image-width image) (tga:image-height image) 0 (ecase (tga:image-channels image) (3 :bgr) (4 :bgra)) :unsigned-byte (tga:image-data image))
Takes a filespec and returns a cl-tga::tga instance that contains the file data
All of these functions take only a cl-tga::tga instance and return properties of it:
height: height of the image
width: width of the image
channels: 3 for rgb, 4 for rgba
bpp: bytes per pixel, will be (member 16 24 32)
data: The raw image data encoded as a (vector (unsigned-byte 8)) in bgr(a) color order