Переход на CpuRenderEngine

src/WindowContext.zig

@@ -7,6 +7,7 @@ const WindowContext = @This();
 allocator: std.mem.Allocator,
 canvas: Canvas,
 cpu_render: *CpuRenderEngine,
+frame_index: u64,
 
 pub fn init(allocator: std.mem.Allocator) !WindowContext {
     var self: WindowContext = undefined;
@@ -18,6 +19,8 @@ pub fn init(allocator: std.mem.Allocator) !WindowContext {
 
     self.canvas = Canvas.init(allocator, self.cpu_render.renderEngine());
 
+    self.frame_index = 0;
+
     return self;
 }