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Added command buffer creation and flush functions to VulkanDevice

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This commit is contained in:
saschawillems 2016-07-23 23:25:25 +02:00
parent ffaea5a430
commit 27aa3ad1b2
1 changed files with 74 additions and 3 deletions
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77
base/vulkandevice.hpp
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@ -248,10 +248,15 @@ namespace vk
deviceCreateInfo.ppEnabledExtensionNames = deviceExtensions.data();
}
return vkCreateDevice(physicalDevice, &deviceCreateInfo, nullptr, &logicalDevice);
VkResult result = vkCreateDevice(physicalDevice, &deviceCreateInfo, nullptr, &logicalDevice);
// Create a default command pool for graphics command buffers
commandPool = createCommandPool(queueFamilyIndices.graphics);
if (result == VK_SUCCESS)
{
// Create a default command pool for graphics command buffers
commandPool = createCommandPool(queueFamilyIndices.graphics);
}
return result;
}
/**
@ -366,5 +371,71 @@ namespace vk
return cmdPool;
}
/**
* Allocate a command buffer from the command pool
*
* @param level Level of the new command buffer (primary or secondary)
* @param (Optional) begin If true, recording on the new command buffer will be started (vkBeginCommandBuffer) (Defaults to false)
*
* @return A handle to the allocated command buffer
*/
VkCommandBuffer createCommandBuffer(VkCommandBufferLevel level, bool begin = false)
{
VkCommandBufferAllocateInfo cmdBufAllocateInfo = vkTools::initializers::commandBufferAllocateInfo(commandPool, level, 1);
VkCommandBuffer cmdBuffer;
VK_CHECK_RESULT(vkAllocateCommandBuffers(logicalDevice, &cmdBufAllocateInfo, &cmdBuffer));
// If requested, also start recording for the new command buffer
if (begin)
{
VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
VK_CHECK_RESULT(vkBeginCommandBuffer(cmdBuffer, &cmdBufInfo));
}
return cmdBuffer;
}
/**
* Finish command buffer recording and submit it to a queue
*
* @param commandBuffer Command buffer to flush
* @param queue Queue to submit the command buffer to
* @param free (Optional) Free the command buffer once it has been submitted (Defaults to true)
*
* @note The queue that the command buffer is submitted to must be from the same family index as the pool it was allocated from
* @note Uses a fence to ensure command buffer has finished executing
*/
void flushCommandBuffer(VkCommandBuffer commandBuffer, VkQueue queue, bool free = true)
{
if (commandBuffer == VK_NULL_HANDLE)
{
return;
}
VK_CHECK_RESULT(vkEndCommandBuffer(commandBuffer));
VkSubmitInfo submitInfo = vkTools::initializers::submitInfo();
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &commandBuffer;
// Create fence to ensure that the command buffer has finished executing
VkFenceCreateInfo fenceInfo = vkTools::initializers::fenceCreateInfo(VK_FLAGS_NONE);
VkFence fence;
VK_CHECK_RESULT(vkCreateFence(logicalDevice, &fenceInfo, nullptr, &fence));
// Submit to the queue
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, fence));
// Wait for the fence to signal that command buffer has finished executing
VK_CHECK_RESULT(vkWaitForFences(logicalDevice, 1, &fence, VK_TRUE, DEFAULT_FENCE_TIMEOUT));
vkDestroyFence(logicalDevice, fence, nullptr);
if (free)
{
vkFreeCommandBuffers(logicalDevice, commandPool, 1, &commandBuffer);
}
}
};
}