rimage provides basic image functions for loading and manipulating basic 2D bitmap data, forked from raylib's textures module.
#define SUPPORT_FILEFORMAT_PNG
#define RIMAGE_IMPLEMENTATION
#include "rimage.h"
int main() {
Image image = LoadImage("cat.png");
ImageDrawCircle(&image, 30, 10, 30, SKYBLUE);
ImageDrawRectangle(&image, 100, 100, 100, 140, GREEN);
ImageDrawLine(&image, 50, 50, 200, 80, ORANGE);
ImageDrawRectangle(&image, 20, 150, 50, 80, RED);
ExportImage(image, "out.png");
UnloadImage(image);
return 0;
}It would be great to be able to use the Image API within raylib without requiring a hard fork. See the discussion about it to see how you could help out.
rimage is licensed under an unmodified zlib/libpng license, which is an OSI-certified, BSD-like license that allows static linking with closed source software. Check LICENSE for further details.
raylib uses internally some libraries for window/graphics/inputs management and also to support different file formats loading, all those libraries are embedded with and are available in src/external directory. Check raylib dependencies LICENSES on raylib Wiki for details.