import gg import time const pwidth = 800 const pheight = 600 const pbytes = 4 struct AppState { mut: gg &gg.Context = 0 istream_idx int pixels [pheight][pwidth]u32 } [direct_array_access] fn (mut state AppState) update() { mut rcolor := u64(state.gg.frame) for { for y in 0 .. pheight { for x in 0 .. pwidth { rcolor = rcolor * 1664525 + 1013904223 state.pixels[y][x] = u32(rcolor & 0x0000_0000_FFFF_FFFF) | 0x1010AFFF } } time.sleep(33 * time.millisecond) } } fn (mut state AppState) draw() { mut istream_image := state.gg.get_cached_image_by_idx(state.istream_idx) istream_image.update_pixel_data(&state.pixels) size := gg.window_size() state.gg.draw_image(0, 0, size.width, size.height, istream_image) } // gg callbacks: fn graphics_init(mut state AppState) { state.istream_idx = state.gg.new_streaming_image(pwidth, pheight, pbytes, pixel_format: .rgba8) } fn graphics_frame(mut state AppState) { state.gg.begin() state.draw() state.gg.end() } fn main() { mut state := &AppState{} state.gg = gg.new_context( width: 800 height: 600 create_window: true window_title: 'Random Static' init_fn: graphics_init frame_fn: graphics_frame user_data: state ) go state.update() state.gg.run() }