Gather and display callstack information during shader debugging

qrenderdoc/Windows/ShaderViewer.cpp

@@ -69,6 +69,7 @@ ShaderViewer::ShaderViewer(ICaptureContext &ctx, QWidget *parent)
   ui->watch->setFont(Formatter::PreferredFont());
   ui->inputSig->setFont(Formatter::PreferredFont());
   ui->outputSig->setFont(Formatter::PreferredFont());
+  ui->callstack->setFont(Formatter::PreferredFont());
 
   // we create this up front so its state stays persistent as much as possible.
   m_FindReplace = new FindReplace(this);
@@ -204,10 +205,11 @@ void ShaderViewer::editShader(bool customShader, const QString &entryPoint, cons
 
   m_DisassemblyView = NULL;
 
-  // hide watch, constants, variables
+  // hide debugging windows
   ui->watch->hide();
   ui->variables->hide();
   ui->constants->hide();
+  ui->callstack->hide();
 
   ui->snippets->setVisible(customShader);
 
@@ -460,6 +462,13 @@ void ShaderViewer::debugShader(const ShaderBindpointMapping *bind, const ShaderR
     ui->docking->setToolWindowProperties(
         ui->constants, ToolWindowManager::HideCloseButton | ToolWindowManager::DisallowFloatWindow);
 
+    ui->callstack->setWindowTitle(tr("Callstack"));
+    ui->docking->addToolWindow(
+        ui->callstack, ToolWindowManager::AreaReference(ToolWindowManager::RightOf,
+                                                        ui->docking->areaOf(ui->variables), 0.2f));
+    ui->docking->setToolWindowProperties(
+        ui->callstack, ToolWindowManager::HideCloseButton | ToolWindowManager::DisallowFloatWindow);
+
     m_DisassemblyView->setMarginWidthN(1, 20.0 * devicePixelRatioF());
 
     // display current line in margin 2, distinct from breakpoint in margin 1
@@ -1227,6 +1236,11 @@ void ShaderViewer::updateDebugging()
     }
   }
 
+  ui->callstack->clear();
+
+  for(const rdcstr &s : state.callstack)
+    ui->callstack->insertItem(0, s);
+
   if(ui->constants->topLevelItemCount() == 0)
   {
     for(int i = 0; i < m_Trace->constantBlocks.count(); i++)

qrenderdoc/Windows/ShaderViewer.ui

@@ -538,6 +538,22 @@
     </property>
    </column>
   </widget>
+  <widget class="QListWidget" name="callstack">
+   <property name="geometry">
+    <rect>
+     <x>20</x>
+     <y>80</y>
+     <width>256</width>
+     <height>192</height>
+    </rect>
+   </property>
+   <property name="frameShape">
+    <enum>QFrame::NoFrame</enum>
+   </property>
+   <property name="selectionMode">
+    <enum>QAbstractItemView::NoSelection</enum>
+   </property>
+  </widget>
  </widget>
  <customwidgets>
   <customwidget>