How do the source and destination rectangles work in the SDL function SDL_RenderCopy

Question

I have been confused on this issue ever since I started using renderers. I have done some testing on them but I have not found anything that helps me. Any help given is great

Answer 1

基本上，源矩形只是一个选择工具，从 png 或某个文件的 x,y = 0,0（可编辑）开始，直到 png 文件的 w,h（某个数字，某个数字）（也可编辑）。