[#87] Fetching the function pointer to relevant mesh shading draw commands...

[#87] Fetching the function pointer to relevant mesh shading draw commands now. Also, it compiles. GGWP vulkan.hpp for not being able to use extensions properly.

include/vkcv/Context.hpp

@@ -3,6 +3,7 @@
 #include <vulkan/vulkan.hpp>
 
 #include "QueueManager.hpp"
+#include "DrawcallRecording.hpp"
 
 namespace vkcv
 {

include/vkcv/DrawcallRecording.hpp

@@ -51,8 +51,10 @@ namespace vkcv {
         const PushConstantData  &pushConstantData,
         const size_t            drawcallIndex);
 
+    void InitMeshShaderDrawFunctions(vk::Device device);
+
     struct MeshShaderDrawcall {
-        inline MeshShaderDrawcall(const std::vector<DescriptorSetUsage> descriptorSets, uint32_t taskCout)
+        inline MeshShaderDrawcall(const std::vector<DescriptorSetUsage> descriptorSets, uint32_t taskCount)
             : descriptorSets(descriptorSets), taskCount(taskCount) {}
 
         std::vector<DescriptorSetUsage> descriptorSets;

src/vkcv/Context.cpp

@@ -307,6 +307,11 @@ namespace vkcv
 		// jetzt koennen wir mit dem device die queues erstellen
 		
 		vk::Device device = physicalDevice.createDevice(deviceCreateInfo);
+
+		if (usingMeshShaders)
+		{
+			InitMeshShaderDrawFunctions(device);
+		}
 		
 		QueueManager queueManager = QueueManager::create(device, queuePairsGraphics, queuePairsCompute, queuePairsTransfer);
 		

src/vkcv/DrawcallRecording.cpp

@@ -43,6 +43,22 @@ namespace vkcv {
         }
     }
 
+
+
+    struct MeshShaderFunctions
+    {
+        PFN_vkCmdDrawMeshTasksNV cmdDrawMeshTasks                           = nullptr;
+        PFN_vkCmdDrawMeshTasksIndirectNV cmdDrawMeshTasksIndirect           = nullptr;
+        PFN_vkCmdDrawMeshTasksIndirectCountNV cmdDrawMeshTasksIndirectCount = nullptr;
+    } MeshShaderFunctions;
+
+    void InitMeshShaderDrawFunctions(vk::Device device)
+    {
+        MeshShaderFunctions.cmdDrawMeshTasks = reinterpret_cast<PFN_vkCmdDrawMeshTasksNV>(vkGetDeviceProcAddr(VkDevice(device), "vkCmdDrawMeshTasksNV"));
+        MeshShaderFunctions.cmdDrawMeshTasksIndirect = reinterpret_cast<PFN_vkCmdDrawMeshTasksIndirectNV>(vkGetDeviceProcAddr(VkDevice(device), "vkCmdDrawMeshTasksIndirectNV"));
+        MeshShaderFunctions.cmdDrawMeshTasksIndirectCount = reinterpret_cast<PFN_vkCmdDrawMeshTasksIndirectCountNV>(vkGetDeviceProcAddr(VkDevice(device), "vkCmdDrawMeshTasksIndirectCountNV"));
+    }
+
     void recordMeshShaderDrawcall(
         vk::CommandBuffer                       cmdBuffer,
         vk::PipelineLayout                      pipelineLayout,
@@ -71,6 +87,6 @@ namespace vkcv {
             pushConstantData.sizePerDrawcall,
             drawcallPushConstantData);
 
-        cmdBuffer.drawMeshTasksNV(drawcall.taskCount, firstTask);
+        MeshShaderFunctions.cmdDrawMeshTasks(cmdBuffer, drawcall.taskCount, firstTask);
     }
 }
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