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Backends: Vulkan: moved helpers to backend: ImGui_ImplVulkanH_SelectPhysicalDevice(), ImGui_ImplVulkanH_SelectQueueFamilyIndex(). (#8180)

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ocornut
2025-01-06 17:29:04 +01:00
parent dbf76f62f9
commit a2e21727c0
7 changed files with 72 additions and 138 deletions
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44
backends/imgui_impl_vulkan.cpp
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@@ -26,6 +26,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2025-01-06: Vulkan: Added more ImGui_ImplVulkanH_XXXX helper functions to simplify our examples.
// 2024-12-11: Vulkan: Fixed setting VkSwapchainCreateInfoKHR::preTransform for platforms not supporting VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR. (#8222)
// 2024-11-27: Vulkan: Make user-provided descriptor pool optional. As a convenience, when setting init_info->DescriptorPoolSize the backend will create one itself. (#8172, #4867)
// 2024-10-07: Vulkan: Changed default texture sampler to Clamp instead of Repeat/Wrap.
@@ -1334,6 +1335,49 @@ VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_d
return VK_PRESENT_MODE_FIFO_KHR; // Always available
}
VkPhysicalDevice ImGui_ImplVulkanH_SelectPhysicalDevice(VkInstance instance)
{
uint32_t gpu_count;
VkResult err = vkEnumeratePhysicalDevices(instance, &gpu_count, nullptr);
check_vk_result(err);
IM_ASSERT(gpu_count > 0);
ImVector<VkPhysicalDevice> gpus;
gpus.resize(gpu_count);
err = vkEnumeratePhysicalDevices(instance, &gpu_count, gpus.Data);
check_vk_result(err);
// If a number >1 of GPUs got reported, find discrete GPU if present, or use first one available. This covers
// most common cases (multi-gpu/integrated+dedicated graphics). Handling more complicated setups (multiple
// dedicated GPUs) is out of scope of this sample.
for (VkPhysicalDevice& device : gpus)
{
VkPhysicalDeviceProperties properties;
vkGetPhysicalDeviceProperties(device, &properties);
if (properties.deviceType == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU)
return device;
}
// Use first GPU (Integrated) is a Discrete one is not available.
if (gpu_count > 0)
return gpus[0];
return VK_NULL_HANDLE;
}
uint32_t ImGui_ImplVulkanH_SelectQueueFamilyIndex(VkPhysicalDevice physical_device)
{
uint32_t count;
vkGetPhysicalDeviceQueueFamilyProperties(physical_device, &count, nullptr);
ImVector<VkQueueFamilyProperties> queues_properties;
queues_properties.resize((int)count);
vkGetPhysicalDeviceQueueFamilyProperties(physical_device, &count, queues_properties.Data);
for (uint32_t i = 0; i < count; i++)
if (queues_properties[i].queueFlags & VK_QUEUE_GRAPHICS_BIT)
return i;
return (uint32_t)-1;
}
void ImGui_ImplVulkanH_CreateWindowCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator)
{
IM_ASSERT(physical_device != VK_NULL_HANDLE && device != VK_NULL_HANDLE);