vk: minimal sendVMemStatsToProfiler implementation

examples/rhi/plainqwindow_vulkan/main.cpp

@@ -53,6 +53,14 @@
 #include <QRhiVulkanInitParams>
 #include "examplewindow.h"
 
+#define PROFILE
+
+#ifdef PROFILE
+#include <QRhiProfiler>
+#include <QFile>
+QFile profOut;
+#endif
+
 class VWindow : public ExampleWindow
 {
 public:
@@ -69,7 +77,16 @@ void VWindow::init()
     params.inst = vulkanInstance();
     params.importExistingDevice = false;
     params.window = this;
-    m_r = QRhi::create(QRhi::Vulkan, &params);
+
+    QRhi::Flags flags = QRhi::EnableDebugMarkers;
+#ifdef PROFILE
+    flags |= QRhi::EnableProfiling;
+#endif
+    m_r = QRhi::create(QRhi::Vulkan, &params, flags);
+
+#ifdef PROFILE
+    m_r->profiler()->setDevice(&profOut);
+#endif
 
     //setSampleCount(4); // enable 4x MSAA (except for the render-to-texture pass)
 
@@ -100,6 +117,10 @@ int main(int argc, char **argv)
 
     VWindow w;
     if (inst.create()) {
+#ifdef PROFILE
+        profOut.setFileName("rhiprof.cbor");
+        profOut.open(QIODevice::WriteOnly);
+#endif
         w.setVulkanInstance(&inst);
         w.resize(1280, 720);
         w.setTitle(QLatin1String("Vulkan"));

examples/rhi/shared/examplewindow.cpp

@@ -50,6 +50,7 @@
 
 #include "examplewindow.h"
 #include <QFileInfo>
+#include <QRhiProfiler>
 
 //#define USE_SRGB_SWAPCHAIN
 //#define READBACK_SWAPCHAIN
@@ -151,6 +152,10 @@ void ExampleWindow::init()
         m_liveTexCubeRenderer.initResources(m_scrp);
         m_liveTexCubeRenderer.setTranslation(QVector3D(-2.0f, 0, 0));
     }
+
+    // Put the gpu mem allocator statistics to the profiling stream after doing
+    // all the init. (where applicable)
+    m_r->profiler()->addVMemAllocatorStats();
 }
 
 void ExampleWindow::releaseResources()

src/rhi/qrhiprofiler.cpp

@@ -304,4 +304,19 @@ void QRhiProfilerPrivate::releaseSwapChain(QRhiSwapChain *sc)
     writer->endMap();
 }
 
+void QRhiProfilerPrivate::vmemStat(int realAllocCount, int subAllocCount, quint32 totalSize, quint32 unusedSize)
+{
+    if (!ensureStream())
+        return;
+
+    writer->startMap();
+    WRITE_OP(VMemAllocStats);
+    WRITE_TIMESTAMP;
+    WRITE_PAIR(QLatin1String("realAllocCount"), realAllocCount);
+    WRITE_PAIR(QLatin1String("subAllocCount"), subAllocCount);
+    WRITE_PAIR(QLatin1String("totalSize"), totalSize);
+    WRITE_PAIR(QLatin1String("unusedSize"), unusedSize);
+    writer->endMap();
+}
+
 QT_END_NAMESPACE

src/rhi/qrhiprofiler.h

@@ -59,7 +59,8 @@ public:
         NewTextureStagingArea,
         ReleaseTextureStagingArea,
         ResizeSwapChain,
-        ReleaseSwapChain
+        ReleaseSwapChain,
+        VMemAllocStats
     };
 
     QRhiProfiler();

src/rhi/qrhiprofiler_p.h

@@ -72,6 +72,8 @@ public:
     void resizeSwapChain(QRhiSwapChain *sc, int bufferCount, int msaaBufferCount, int sampleCount);
     void releaseSwapChain(QRhiSwapChain *sc);
 
+    void vmemStat(int realAllocCount, int subAllocCount, quint32 totalSize, quint32 unusedSize);
+
     bool ensureStream();
     void flushStream();
 

src/rhi/qrhivulkan.cpp

@@ -2648,9 +2648,14 @@ const QRhiNativeHandles *QRhiVulkan::nativeHandles()
 
 void QRhiVulkan::sendVMemStatsToProfiler()
 {
+    QRhiProfilerPrivate *rhiP = profilerPrivateOrNull();
+    if (!rhiP)
+        return;
+
     VmaStats stats;
     vmaCalculateStats(toVmaAllocator(allocator), &stats);
-    // ###
+    QRHI_PROF_F(vmemStat(stats.total.blockCount, stats.total.allocationCount,
+                         stats.total.usedBytes, stats.total.unusedBytes));
 }
 
 QRhiRenderBuffer *QRhiVulkan::createRenderBuffer(QRhiRenderBuffer::Type type, const QSize &pixelSize,

todo.txt

 d3d: texture import/export
 prof api
 vk, d3d, gl: tex and other prof
-vk: memalloc stats to prof
 vk, d3d, gl: debug: object names
 vk, d3d, gl: debug: markers (begin, end, msg)
 max texture size?
@@ -54,6 +53,7 @@ dxc for d3d as an alternative to fxc?
 hlsl -> dxc -> spirv -> spirv-cross hmmm...
 
 +++ done
+vk: memalloc stats to prof
 mtl: debug: markers (begin, end, msg)
 mtl: debug: object names
 mtl: buf/tex/rb/sc prof