We be kinda rendering

destrum/src/Graphics/ImmediateExecuter.cpp

@@ -0,0 +1,72 @@
+#include <cassert>
+#include <limits>
+#include <destrum/Graphics/ImmediateExecuter.h>
+
+#include <volk.h>
+
+#include <destrum/Graphics/Init.h>
+#include <destrum/Graphics/Util.h>
+
+
+namespace
+{
+constexpr auto NO_TIMEOUT = std::numeric_limits<std::uint64_t>::max();
+}
+
+void VulkanImmediateExecutor::init(
+    VkDevice device,
+    std::uint32_t graphicsQueueFamily,
+    VkQueue graphicsQueue)
+{
+    assert(!initialized);
+
+    this->device = device;
+    this->graphicsQueue = graphicsQueue;
+
+    const auto poolCreateInfo = vkinit::
+        commandPoolCreateInfo(VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT, graphicsQueueFamily);
+    VK_CHECK(vkCreateCommandPool(device, &poolCreateInfo, nullptr, &immCommandPool));
+
+    const auto cmdAllocInfo = vkinit::commandBufferAllocateInfo(immCommandPool, 1);
+    VK_CHECK(vkAllocateCommandBuffers(device, &cmdAllocInfo, &immCommandBuffer));
+
+    constexpr auto fenceCreateInfo = VkFenceCreateInfo{
+        .sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO,
+        .flags = VK_FENCE_CREATE_SIGNALED_BIT,
+    };
+    VK_CHECK(vkCreateFence(device, &fenceCreateInfo, nullptr, &immFence));
+
+    initialized = true;
+}
+
+void VulkanImmediateExecutor::cleanup(VkDevice device)
+{
+    assert(initialized);
+    vkDestroyCommandPool(device, immCommandPool, nullptr);
+    vkDestroyFence(device, immFence, nullptr);
+}
+
+void VulkanImmediateExecutor::immediateSubmit(
+    std::function<void(VkCommandBuffer cmd)>&& function) const
+{
+    assert(initialized);
+    VK_CHECK(vkResetFences(device, 1, &immFence));
+    VK_CHECK(vkResetCommandBuffer(immCommandBuffer, 0));
+
+    auto cmd = immCommandBuffer;
+    const auto cmdBeginInfo = VkCommandBufferBeginInfo{
+        .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
+        .flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT,
+    };
+
+    VK_CHECK(vkBeginCommandBuffer(cmd, &cmdBeginInfo));
+    function(cmd);
+    VK_CHECK(vkEndCommandBuffer(cmd));
+
+    const auto cmdinfo = vkinit::commandBufferSubmitInfo(cmd);
+    const auto submit = vkinit::submitInfo(&cmdinfo, nullptr, nullptr);
+
+    VK_CHECK(vkQueueSubmit2(graphicsQueue, 1, &submit, immFence));
+
+    VK_CHECK(vkWaitForFences(device, 1, &immFence, true, NO_TIMEOUT));
+}