First window rendered, sdl here I come

src/main.zig

@@ -0,0 +1,72 @@
+const c = @cImport({
+    @cInclude("SDL2/SDL.h");
+});
+
+const std = @import("std");
+const assert = std.debug.assert;
+
+pub fn main() !void {
+    if (c.SDL_Init(c.SDL_INIT_VIDEO) != 0) {
+        c.SDL_Log("Unable to initialize SDL: %s", c.SDL_GetError());
+        return error.SDLInitializationFailed;
+    }
+    defer c.SDL_Quit();
+
+    const screen = c.SDL_CreateWindow("My Game Window", c.SDL_WINDOWPOS_UNDEFINED, c.SDL_WINDOWPOS_UNDEFINED, 400, 140, c.SDL_WINDOW_OPENGL) orelse
+        {
+        c.SDL_Log("Unable to create window: %s", c.SDL_GetError());
+        return error.SDLInitializationFailed;
+    };
+    defer c.SDL_DestroyWindow(screen);
+
+    const renderer = c.SDL_CreateRenderer(screen, -1, 0) orelse {
+        c.SDL_Log("Unable to create renderer: %s", c.SDL_GetError());
+        return error.SDLInitializationFailed;
+    };
+    defer c.SDL_DestroyRenderer(renderer);
+
+    const zig_bmp = @embedFile("zig.bmp");
+    const rw = c.SDL_RWFromConstMem(zig_bmp, zig_bmp.len) orelse {
+        c.SDL_Log("Unable to get RWFromConstMem: %s", c.SDL_GetError());
+        return error.SDLInitializationFailed;
+    };
+    defer assert(c.SDL_RWclose(rw) == 0);
+
+    const zig_surface = c.SDL_LoadBMP_RW(rw, 0) orelse {
+        c.SDL_Log("Unable to load bmp: %s", c.SDL_GetError());
+        return error.SDLInitializationFailed;
+    };
+    defer c.SDL_FreeSurface(zig_surface);
+
+    const zig_texture = c.SDL_CreateTextureFromSurface(renderer, zig_surface) orelse {
+        c.SDL_Log("Unable to create texture from surface: %s", c.SDL_GetError());
+        return error.SDLInitializationFailed;
+    };
+    defer c.SDL_DestroyTexture(zig_texture);
+
+    var quit = false;
+    while (!quit) {
+        var event: c.SDL_Event = undefined;
+        while (c.SDL_PollEvent(&event) != 0) {
+            switch (event.type) {
+                c.SDL_QUIT => {
+                    quit = true;
+                },
+                else => {},
+            }
+        }
+
+        _ = c.SDL_RenderClear(renderer);
+        _ = c.SDL_RenderCopy(renderer, zig_texture, null, null);
+        c.SDL_RenderPresent(renderer);
+
+        c.SDL_Delay(17);
+    }
+}
+
+test "simple test" {
+    var list = std.ArrayList(i32).init(std.testing.allocator);
+    defer list.deinit(); // try commenting this out and see if zig detects the memory leak!
+    try list.append(42);
+    try std.testing.expectEqual(@as(i32, 42), list.pop());
+}

src/root.zig

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+const std = @import("std");
+const testing = std.testing;
+
+export fn add(a: i32, b: i32) i32 {
+    return a + b;
+}
+
+test "basic add functionality" {
+    try testing.expect(add(3, 7) == 10);
+}