CommandPool reset and trim

src/Vulkan/VkCommandPool.cpp

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 #include "VkCommandPool.hpp"
+#include "VkCommandBuffer.hpp"
 #include "VkDestroy.h"
 #include <algorithm>
 
@@ -79,4 +80,28 @@ void CommandPool::freeCommandBuffers(uint32_t commandBufferCount, const VkComman
 	}
 }
 
+VkResult CommandPool::reset(VkCommandPoolResetFlags flags)
+{
+	// According the Vulkan 1.1 spec:
+	// "All command buffers that have been allocated from
+	//  the command pool are put in the initial state."
+	for(auto commandBuffer : *commandBuffers)
+	{
+		Cast(commandBuffer)->reset(flags);
+	}
+
+	// According the Vulkan 1.1 spec:
+	// "Resetting a command pool recycles all of the
+	//  resources from all of the command buffers allocated
+	//  from the command pool back to the command pool."
+	commandBuffers->clear();
+
+	return VK_SUCCESS;
+}
+
+void CommandPool::trim(VkCommandPoolTrimFlags flags)
+{
+	// TODO (b/119827933): Optimize memory usage here
+}
+
 } // namespace vk

src/Vulkan/VkCommandPool.hpp

@@ -32,6 +32,8 @@ public:
 
 	VkResult allocateCommandBuffers(VkCommandBufferLevel level, uint32_t commandBufferCount, VkCommandBuffer* pCommandBuffers);
 	void freeCommandBuffers(uint32_t commandBufferCount, const VkCommandBuffer* pCommandBuffers);
+	VkResult reset(VkCommandPoolResetFlags flags);
+	void trim(VkCommandPoolTrimFlags flags);
 
 private:
 	std::set<VkCommandBuffer>* commandBuffers;

src/Vulkan/libVulkan.cpp

@@ -1175,9 +1175,10 @@ VKAPI_ATTR void VKAPI_CALL vkDestroyCommandPool(VkDevice device, VkCommandPool c
 
 VKAPI_ATTR VkResult VKAPI_CALL vkResetCommandPool(VkDevice device, VkCommandPool commandPool, VkCommandPoolResetFlags flags)
 {
-	TRACE("()");
-	UNIMPLEMENTED();
-	return VK_SUCCESS;
+	TRACE("(VkDevice device = 0x%X, VkCommandPool commandPool = 0x%X, VkCommandPoolResetFlags flags = %d )",
+		device, commandPool, flags);
+
+	return vk::Cast(commandPool)->reset(flags);
 }
 
 VKAPI_ATTR VkResult VKAPI_CALL vkAllocateCommandBuffers(VkDevice device, const VkCommandBufferAllocateInfo* pAllocateInfo, VkCommandBuffer* pCommandBuffers)
@@ -1888,8 +1889,10 @@ VKAPI_ATTR void VKAPI_CALL vkGetPhysicalDeviceSparseImageFormatProperties2(VkPhy
 
 VKAPI_ATTR void VKAPI_CALL vkTrimCommandPool(VkDevice device, VkCommandPool commandPool, VkCommandPoolTrimFlags flags)
 {
-	TRACE("()");
-	UNIMPLEMENTED();
+	TRACE("(VkDevice device = 0x%X, VkCommandPool commandPool = 0x%X, VkCommandPoolTrimFlags flags = %d)",
+	      device, commandPool, flags);
+
+	vk::Cast(commandPool)->trim(flags);
 }
 
 VKAPI_ATTR void VKAPI_CALL vkGetDeviceQueue2(VkDevice device, const VkDeviceQueueInfo2* pQueueInfo, VkQueue* pQueue)