статистика времени кадра

src/render/CpuRenderEngine.zig

@@ -5,6 +5,7 @@ const RenderEngine = @import("RenderEngine.zig").RenderEngine;
 const Document = @import("../models/Document.zig");
 const basic_models = @import("../models/basic_models.zig");
 const cpu_draw = @import("cpu/draw.zig");
+const RenderStats = @import("RenderStats.zig");
 const Size_i = basic_models.Size_i;
 const Rect_i = basic_models.Rect_i;
 const Allocator = std.mem.Allocator;
@@ -17,14 +18,18 @@ const Type = enum {
 };
 
 type: Type,
-_allocator: Allocator,
 gradient_start: Color.PMA = .{ .r = 0, .g = 0, .b = 0, .a = 255 },
 gradient_end: Color.PMA = .{ .r = 255, .g = 255, .b = 255, .a = 255 },
+_allocator: Allocator,
+_renderStats: RenderStats,
 
 pub fn init(allocator: Allocator, render_type: Type) CpuRenderEngine {
     return .{
         ._allocator = allocator,
         .type = render_type,
+        ._renderStats = .{
+            .render_time_ns = 0,
+        },
     };
 }
 
@@ -182,7 +187,13 @@ pub fn renderDocument(self: *CpuRenderEngine, document: *const Document, canvas_
     defer self._allocator.free(pixels);
 
     for (pixels) |*p| p.* = .{ .r = 255, .g = 255, .b = 255, .a = 255 };
+    var t = try std.time.Timer.start();
     try cpu_draw.drawDocument(pixels, width, height, visible_rect, document, canvas_size, self._allocator);
+    self._renderStats.render_time_ns = t.read();
 
     return try dvui.textureCreate(pixels, width, height, .nearest);
 }
+
+pub fn getStats(self: CpuRenderEngine) RenderStats {
+    return self._renderStats;
+}