Moved extension check to DeviceExtensions.

Author: robertosfield

include/vsg/vk/Device.h

@@ -85,9 +85,6 @@ namespace vsg
         /// return true if Device was created with specified extension
         bool supportsDeviceExtension(const char* extensionName) const;
 
-        /// commonly checked extensions
-        const bool memory_budget = false; // VK_EXT_memory_budget
-
         /// return the amount of remaining memory, compatible with specified flags, available that can be allocated.
         VkDeviceSize availableMemory(VkMemoryPropertyFlags memoryPropertiesFlags, double allocatedMemoryLimit = 1.0) const;
 

include/vsg/vk/DeviceExtensions.h

@@ -61,6 +61,9 @@ namespace vsg
         PFN_vkCmdSetDepthBoundsTestEnableEXT vkCmdSetDepthBoundsTestEnable = nullptr;
         PFN_vkCmdSetStencilTestEnableEXT vkCmdSetStencilTestEnable = nullptr;
         PFN_vkCmdSetStencilOpEXT vkCmdSetStencilOp = nullptr;
+
+        // cache whether extension is supported
+        bool memory_budget = false; // VK_EXT_memory_budget
     };
     VSG_type_name(vsg::DeviceExtensions);
 

src/vsg/vk/Device.cpp

@@ -114,10 +114,9 @@ Device::Device(PhysicalDevice* physicalDevice, const QueueSettings& queueSetting
         deviceExtensions.push_back(VK_KHR_PORTABILITY_SUBSET_EXTENSION_NAME);
 #endif
 
-    if (_physicalDevice->supportsDeviceExtension(VK_EXT_MEMORY_BUDGET_EXTENSION_NAME))
+    if (supportsApiVersion(VK_API_VERSION_1_1) && _physicalDevice->supportsDeviceExtension(VK_EXT_MEMORY_BUDGET_EXTENSION_NAME))
     {
         deviceExtensions.push_back(VK_EXT_MEMORY_BUDGET_EXTENSION_NAME);
-        const_cast<bool&>(memory_budget) = true;
     }
 
     VkDeviceCreateInfo createInfo = {};
@@ -214,7 +213,7 @@ bool Device::supportsDeviceExtension(const char* extensionName) const
 
 VkDeviceSize Device::availableMemory(VkMemoryPropertyFlags memoryPropertiesFlags, double allocatedMemoryLimit) const
 {
-    if (memory_budget)
+    if (_extensions->memory_budget)
     {
         VkPhysicalDeviceMemoryBudgetPropertiesEXT memoryBudget;
         memoryBudget.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MEMORY_BUDGET_PROPERTIES_EXT;

src/vsg/vk/DeviceExtensions.cpp

@@ -77,4 +77,6 @@ DeviceExtensions::DeviceExtensions(Device* device)
         device->getProcAddr(vkCmdSetStencilTestEnable, "vkCmdSetStencilTestEnableEXT");
         device->getProcAddr(vkCmdSetStencilOp, "vkCmdSetStencilOpEXT");
     }
+
+    memory_budget = device->supportsApiVersion(VK_API_VERSION_1_1) && device->supportsDeviceExtension(VK_EXT_MEMORY_BUDGET_EXTENSION_NAME);
 }