Check for multiview geometry feature

* This means the triangle size overlay will not be available.

renderdoc/driver/vulkan/vk_core.h

@@ -580,6 +580,7 @@ private:
   bool m_DynVertexInput = false;
   bool m_DynAttachmentLoop = false;
   bool m_MultiView = false;
+  bool m_MultiViewGeometryShaders = false;
   bool m_MeshQueries = false;
   bool m_MeshShaders = false;
   bool m_TaskShaders = false;
@@ -1571,6 +1572,7 @@ public:
   bool Maintenance6() const { return m_Maintenance6; }
   bool Maintenance9() const { return m_Maintenance9; }
   bool DescriptorBuffers() const { return m_DescriptorBuffers; }
+  bool MultiViewGeometryShaders() const { return m_MultiViewGeometryShaders; }
   bool MultiviewPerViewViewports() const { return m_MultiviewPerViewViewports; }
   VulkanRenderState &GetRenderState() { return m_RenderState; }
   void SetActionCB(VulkanActionCallback *cb) { m_ActionCallback = cb; }

renderdoc/driver/vulkan/vk_overlay.cpp

@@ -3324,7 +3324,7 @@ ResourceId VulkanReplay::RenderOverlay(ResourceId texid, FloatVector clearCol, D
   }
   else if(overlay == DebugOverlay::TriangleSizePass || overlay == DebugOverlay::TriangleSizeDraw)
   {
-    if(!state.rastDiscardEnable)
+    if(!state.rastDiscardEnable && (multiviewMask == 0 || m_pDriver->MultiViewGeometryShaders()))
     {
       VulkanRenderState prevstate = state;
 

renderdoc/driver/vulkan/wrappers/vk_device_funcs.cpp

@@ -2387,6 +2387,14 @@ bool WrappedVulkan::Serialise_vkCreateDevice(SerialiserType &ser, VkPhysicalDevi
         CHECK_PHYS_EXT_FEATURE(shaderDrawParameters);
 
         m_MultiView |= ext->multiview != VK_FALSE;
+
+        if(avail.multiviewGeometryShader)
+          ext->multiviewGeometryShader = true;
+        else
+          RDCWARN(
+              "multiviewGeometryShader = false, triangle size overlay with multiview unavailable");
+
+        m_MultiViewGeometryShaders |= ext->multiviewGeometryShader != VK_FALSE;
       }
       END_PHYS_EXT_CHECK();
 

util/test/demos/vk/vk_multi_view.cpp

@@ -122,6 +122,9 @@ void main()
 }
 
 )EOSHADER";
+
+  bool geometryTest = false;
+
   void Prepare(int argc, char **argv)
   {
     features.geometryShader = VK_TRUE;
@@ -137,6 +140,8 @@ void main()
     if(!multiview.multiview)
       Avail = "Multiview feature 'multiview' not available";
 
+    geometryTest = multiview.multiviewGeometryShader == VK_TRUE;
+
     devInfoNext = &multiview;
   }
 
@@ -233,13 +238,16 @@ void main()
     testPipes.push_back(createGraphicsPipeline(pipeCreateInfo));
     testNames.push_back("Fragment: viewIndex");
 
-    pipeCreateInfo.stages = {
-        CompileShaderModule(VKDefaultVertex, ShaderLang::glsl, ShaderStage::vert, "main"),
-        CompileShaderModule(VKDefaultPixel, ShaderLang::glsl, ShaderStage::frag, "main"),
-        CompileShaderModule(multiViewGeom, ShaderLang::glsl, ShaderStage::geom, "main"),
-    };
-    testPipes.push_back(createGraphicsPipeline(pipeCreateInfo));
-    testNames.push_back("Geometry: viewIndex");
+    if(geometryTest)
+    {
+      pipeCreateInfo.stages = {
+          CompileShaderModule(VKDefaultVertex, ShaderLang::glsl, ShaderStage::vert, "main"),
+          CompileShaderModule(VKDefaultPixel, ShaderLang::glsl, ShaderStage::frag, "main"),
+          CompileShaderModule(multiViewGeom, ShaderLang::glsl, ShaderStage::geom, "main"),
+      };
+      testPipes.push_back(createGraphicsPipeline(pipeCreateInfo));
+      testNames.push_back("Geometry: viewIndex");
+    }
 
     pipeCreateInfo.stages = {
         CompileShaderModule(VKDefaultVertex, ShaderLang::glsl, ShaderStage::vert, "main"),