From a0fcc4cc6298e0655da9b916816cc2615c83b303 Mon Sep 17 00:00:00 2001
From: gaozheng <gaozheng.cn@gmail.com>
Date: Mon, 8 Jun 2026 12:12:38 +0800
Subject: [PATCH] =?UTF-8?q?fix(render):=20=E5=88=87=E7=89=87=E5=81=B6?=
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- 实测(render_verify + 帧耗时埋点)定位: 体绘制走 GPU(RTX3060), 每帧~7ms(669帧全<21ms),
  渲染根本不慢; 前判"CPU回退"错误。"偶尔停顿"是帧间间隙, 非慢帧。
- 根因: ①诊断埋点每帧 flush 磁盘(偶发延迟) ②vtkSmartVolumeMapper AutoAdjust 的"停手补高清"突跳。
- 修: 撤销帧耗时埋点(及无效的 DesiredUpdateRate 改动); VoxelActor 关交互降采样(Auto/Interactive
  AdjustSampleDistances=0)→全程统一全质量(GPU 足够), 消除停手补帧的突跳。
- 全 40 测试绿; app 构建干净。
---
 src/app/main.cpp                 | 4 ----
 src/render/actors/VoxelActor.cpp | 6 +++---
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/app/main.cpp b/src/app/main.cpp
index b58d03b..1260151 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -406,10 +406,6 @@ void buildWorkbench(QMainWindow& window, geopro::data::LocalSampleRepository& re
                 }
                 vtkRenderWindowInteractor* interactor = renderWindowPtr->GetInteractor();
                 if (*showSlice && interactor) {
-                    // 交互时目标帧率↑→体绘制自动降采样(AutoAdjustSampleDistances)，拖切片不卡;
-                    // 松手后按 StillUpdateRate 恢复全质量。
-                    interactor->SetDesiredUpdateRate(20.0);
-                    interactor->SetStillUpdateRate(0.001);
                     const std::vector<double> stops = vcs.stopValues();
                     const double vmn = stops.size() >= 2 ? stops.front() : 0.0;
                     const double vmx = stops.size() >= 2 ? stops.back() : 1.0;
diff --git a/src/render/actors/VoxelActor.cpp b/src/render/actors/VoxelActor.cpp
index 973e97a..4dfd7ef 100644
--- a/src/render/actors/VoxelActor.cpp
+++ b/src/render/actors/VoxelActor.cpp
@@ -74,9 +74,9 @@ vtkSmartPointer<vtkVolume> buildVoxel(const geopro::core::ScalarVolume& vol,
     // SmartVolumeMapper：有 GPU 走 GPU ray cast，否则自动回退 CPU，避免无 GPU 时卡死/失败。
     vtkNew<vtkSmartVolumeMapper> mapper;
     mapper->SetInputData(img);
-    // 交互时按 DesiredUpdateRate 自动降采样(与切片共渲时拖动更流畅)；静止恢复全质量。
-    mapper->SetAutoAdjustSampleDistances(1);
-    mapper->SetInteractiveAdjustSampleDistances(1);
+    // 全程统一全质量(GPU 足够快, 实测 ~7ms/帧)：关掉交互降采样, 避免"停手补高清"那一帧突跳停顿。
+    mapper->SetAutoAdjustSampleDistances(0);
+    mapper->SetInteractiveAdjustSampleDistances(0);
 
     vtkNew<vtkVolumeProperty> prop;
     prop->SetColor(color);