Async asset loading

src/assets/texture.zig

@@ -0,0 +1,34 @@
+const std = @import("std");
+const sdl = @import("sdl");
+const err = @import("../error.zig");
+const c = @import("../c.zig");
+const Assets = @import("../assets.zig");
+const Graphics = @import("../graphics.zig");
+
+texture: *sdl.GPUTexture,
+sampler: *sdl.GPUSampler,
+
+pub fn load(path: []const u8, alloc: std.mem.Allocator) Assets.LoadError!@This() {
+    _ = alloc;
+    var file = Assets.load(.file, path);
+    defer Assets.free(file);
+    const data = (try file.getSync()).bytes;
+
+    var x: i32 = undefined;
+    var y: i32 = undefined;
+    var z: i32 = undefined;
+    const image = c.stbi_load_from_memory(@ptrCast(data), @intCast(data.len), &x, &y, &z, 4);
+    if (image == null) err.stbi();
+    const image_slice = image[0..@intCast(x * y * z)];
+    const texture, const sampler = Graphics.loadTexture(@intCast(x), @intCast(y), image_slice);
+    c.stbi_image_free(image);
+    return .{
+        .texture = texture,
+        .sampler = sampler,
+    };
+}
+
+pub fn unload(self: @This(), alloc: std.mem.Allocator) void {
+    _ = alloc;
+    Graphics.unloadTexture(self.texture, self.sampler);
+}