支持锁屏帧的绘制

shaders/background.frag

@@ -12,11 +12,19 @@ layout(binding = 0, std140) uniform UniformBufferObject {
     float resY; // offset 8
     float rotation; // offset 12
     float wavePhase; // offset 16
-    float padding1; // offset 20
+    float paintingEnabled; // offset 20 (0.0 = locked, 1.0 = normal)
-    float padding2; // offset 24
+    float padding1; // offset 24
 } ubo;
 
 void main() {
+    // Check if painting is disabled (locked state)
+    if (ubo.paintingEnabled < 0.5) {
+        // Locked state: dark gray background (matching CustomWidget)
+        outColor = vec4(0.157, 0.157, 0.157, 1.0); // RGB(40, 40, 40)
+        return;
+    }
+
+    // Normal state: animated gradient background
     // Normalize position to 0-1 range
     vec2 uv = (fragPosition + 1.0) * 0.5;
 
@@ -39,4 +47,3 @@ void main() {
 
     outColor = vec4(finalColor, 1.0);
 }
-

src/shaders_spirv/background_frag.inc

@@ -1,84 +1,90 @@
 // Auto-generated from background.frag.spv
-// Size: 2624 bytes (656 words)
+// Size: 2812 bytes (703 words)
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+    0x07230203u, 0x00010000u, 0x0008000bu, 0x0000006bu, 0x00000000u, 0x00020011u, 0x00000001u, 0x0006000bu,
     0x00000001u, 0x4c534c47u, 0x6474732eu, 0x3035342eu, 0x00000000u, 0x0003000eu, 0x00000000u, 0x00000001u,
-    0x0009000fu, 0x00000004u, 0x00000004u, 0x6e69616du, 0x00000000u, 0x0000000bu, 0x00000058u, 0x0000005fu,
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-    0x00000060u, 0x00030010u, 0x00000004u, 0x00000007u, 0x00030003u, 0x00000002u, 0x000001c2u, 0x00040005u,
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-    0x0000004cu, 0x00000009u, 0x0000004bu, 0x0004003du, 0x00000006u, 0x0000004du, 0x0000004cu, 0x00050085u,
+    0x00000006u, 0x00000046u, 0x0000003eu, 0x00000045u, 0x0003003eu, 0x0000003du, 0x00000046u, 0x0004003du,
-    0x00000006u, 0x0000004eu, 0x0000004du, 0x00000010u, 0x00050081u, 0x00000006u, 0x0000004fu, 0x0000004au,
+    0x00000006u, 0x0000004au, 0x0000002bu, 0x0004003du, 0x00000006u, 0x0000004bu, 0x00000034u, 0x0004003du,
-    0x0000004eu, 0x0003003eu, 0x00000045u, 0x0000004fu, 0x0004003du, 0x0000003au, 0x00000051u, 0x0000003cu,
+    0x00000006u, 0x0000004cu, 0x0000003du, 0x00060050u, 0x00000047u, 0x0000004du, 0x0000004au, 0x0000004bu,
-    0x0004003du, 0x0000003au, 0x00000052u, 0x00000041u, 0x0004003du, 0x00000006u, 0x00000053u, 0x00000045u,
+    0x0000004cu, 0x0003003eu, 0x00000049u, 0x0000004du, 0x0003003eu, 0x0000004eu, 0x00000051u, 0x00050041u,
-    0x00060050u, 0x0000003au, 0x00000054u, 0x00000053u, 0x00000053u, 0x00000053u, 0x0008000cu, 0x0000003au,
+    0x00000024u, 0x00000055u, 0x0000001du, 0x00000054u, 0x0004003du, 0x00000006u, 0x00000056u, 0x00000055u,
-    0x00000055u, 0x00000001u, 0x0000002eu, 0x00000051u, 0x00000052u, 0x00000054u, 0x0003003eu, 0x00000050u,
+    0x00050085u, 0x00000006u, 0x00000057u, 0x00000056u, 0x0000000fu, 0x00050041u, 0x00000024u, 0x00000059u,
-    0x00000055u, 0x0004003du, 0x0000003au, 0x00000059u, 0x00000050u, 0x00050051u, 0x00000006u, 0x0000005au,
+    0x0000001du, 0x00000058u, 0x0004003du, 0x00000006u, 0x0000005au, 0x00000059u, 0x00050085u, 0x00000006u,
-    0x00000059u, 0x00000000u, 0x00050051u, 0x00000006u, 0x0000005bu, 0x00000059u, 0x00000001u, 0x00050051u,
+    0x0000005bu, 0x0000005au, 0x0000000fu, 0x00050081u, 0x00000006u, 0x0000005cu, 0x00000057u, 0x0000005bu,
-    0x00000006u, 0x0000005cu, 0x00000059u, 0x00000002u, 0x00070050u, 0x00000056u, 0x0000005du, 0x0000005au,
+    0x0003003eu, 0x00000052u, 0x0000005cu, 0x0004003du, 0x00000047u, 0x0000005eu, 0x00000049u, 0x0004003du,
-    0x0000005bu, 0x0000005cu, 0x0000000du, 0x0003003eu, 0x00000058u, 0x0000005du, 0x000100fdu, 0x00010038u
+    0x00000047u, 0x0000005fu, 0x0000004eu, 0x0004003du, 0x00000006u, 0x00000060u, 0x00000052u, 0x00060050u,
+    0x00000047u, 0x00000061u, 0x00000060u, 0x00000060u, 0x00000060u, 0x0008000cu, 0x00000047u, 0x00000062u,
+    0x00000001u, 0x0000002eu, 0x0000005eu, 0x0000005fu, 0x00000061u, 0x0003003eu, 0x0000005du, 0x00000062u,
+    0x0004003du, 0x00000047u, 0x00000063u, 0x0000005du, 0x00050051u, 0x00000006u, 0x00000064u, 0x00000063u,
+    0x00000000u, 0x00050051u, 0x00000006u, 0x00000065u, 0x00000063u, 0x00000001u, 0x00050051u, 0x00000006u,
+    0x00000066u, 0x00000063u, 0x00000002u, 0x00070050u, 0x00000014u, 0x00000067u, 0x00000064u, 0x00000065u,
+    0x00000066u, 0x00000018u, 0x0003003eu, 0x00000016u, 0x00000067u, 0x000100fdu, 0x00010038u

src/vulkanrenderer.cpp

@@ -558,6 +558,7 @@ void VulkanRenderer::recordCommandBuffer(VkCommandBuffer commandBuffer,
     m_ubo.resolution[1] = static_cast<float>(m_height);
     m_ubo.rotation = static_cast<float>(rotationAngle);
     m_ubo.wavePhase = static_cast<float>(wavePhase);
+    m_ubo.paintingEnabled = paintingEnabled ? 1.0f : 0.0f;
 
 
 

src/vulkanrenderer.h

@@ -44,7 +44,8 @@ struct UniformBufferObject {
     float resolution[2];  // 分辨率 (width, height)
     float rotation;       // 旋转角度
     float wavePhase;      // 波浪相位
-    float padding[2];     // 对齐到 16 字节边界
+    float paintingEnabled; // 是否启用绘制（0.0 = 锁屏，1.0 = 正常）
+    float padding[1];     // 对齐到 16 字节边界
 };
 
 /**

src/vulkanwidget.cpp

@@ -639,10 +639,13 @@ bool VulkanWidget::recreateSwapchain()
 
 void VulkanWidget::renderFrame()
 {
-    if (!m_initialized || !m_renderingEnabled) {
+    if (!m_initialized) {
         return;
     }
 
+    // 关键修复：即使 renderingEnabled=false 也继续渲染，以显示锁屏状态
+    // 只是传递不同的 paintingEnabled 参数给 renderer
+    
     // Wait for previous frame
     vkWaitForFences(m_device, 1, &m_inFlightFences[m_currentFrame], VK_TRUE, UINT64_MAX);
 
@@ -912,7 +915,10 @@ void VulkanWidget::setRenderingEnabled(bool enabled)
 
     if (m_renderingEnabled) {
         qDebug() << "Vulkan rendering ENABLED - Resuming animations";
-        m_renderTimer->start(16); // ~60 FPS
+        // 定时器始终运行，无需重新启动
+        if (!m_renderTimer->isActive()) {
+            m_renderTimer->start(16); // ~60 FPS
+        }
 
         // Unlocked: calculate lock duration
         if (m_lastLockTime.isValid()) {
@@ -926,8 +932,9 @@ void VulkanWidget::setRenderingEnabled(bool enabled)
 
         m_startTime = QDateTime::currentDateTime();
     } else {
-        qDebug() << "Vulkan rendering DISABLED - Stopping animations";
+        qDebug() << "Vulkan rendering DISABLED - Showing locked state";
-        m_renderTimer->stop();
+        // 关键修复：不停止定时器，继续渲染以显示锁屏界面
+        // 只是不更新动画参数（在 onRenderTimer 中处理）
 
         // Locked: record lock time
         m_pauseTime = QDateTime::currentDateTime();