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Vulkan backend: optionally enabling vulkan validation layers and debug report callback

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Additional layer, extension and the callback itself are used/created when IMGUI_VULKAN_DEBUG_REPORT is defined. The callback reports seven (potential!) errors which will be fixed with another pull request.
This commit is contained in:
Peter Particle 2017-02-26 13:36:40 +01:00 committed by omar
parent 55be2f0722
commit 56dff3a080
1 changed files with 66 additions and 5 deletions
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69
examples/vulkan_example/main.cpp
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@ -13,6 +13,7 @@
#define IMGUI_MAX_POSSIBLE_BACK_BUFFERS 16
#define IMGUI_UNLIMITED_FRAME_RATE
#define IMGUI_VULKAN_DEBUG_REPORT
static VkAllocationCallbacks* g_Allocator = NULL;
static VkInstance g_Instance = VK_NULL_HANDLE;
@ -23,6 +24,7 @@ static VkSwapchainKHR g_Swapchain = VK_NULL_HANDLE;
static VkRenderPass g_RenderPass = VK_NULL_HANDLE;
static uint32_t g_QueueFamily = 0;
static VkQueue g_Queue = VK_NULL_HANDLE;
static VkDebugReportCallbackEXT g_Debug_Report = VK_NULL_HANDLE;
static VkFormat g_ImageFormat = VK_FORMAT_B8G8R8A8_UNORM;
static VkFormat g_ViewFormat = VK_FORMAT_B8G8R8A8_UNORM;
@ -89,7 +91,7 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
info.presentMode = VK_PRESENT_MODE_IMMEDIATE_KHR;
#else
info.presentMode = VK_PRESENT_MODE_FIFO_KHR;
#endif
#endif // IMGUI_UNLIMITED_FRAME_RATE
info.clipped = VK_TRUE;
info.oldSwapchain = old_swapchain;
VkSurfaceCapabilitiesKHR cap;
@ -191,20 +193,71 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
}
}
#ifdef IMGUI_VULKAN_DEBUG_REPORT
static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(
VkDebugReportFlagsEXT, //flags,
VkDebugReportObjectTypeEXT objectType,
uint64_t, //object,
size_t, //location,
int32_t, //messageCode,
const char*, //pLayerPrefix,
const char* pMessage,
void*) //pUserData)
{
printf( "ObjectType : %i\nMessage : %s\n\n", objectType, pMessage );
return VK_FALSE;
}
#endif // IMGUI_VULKAN_DEBUG_REPORT
static void setup_vulkan(GLFWwindow* window)
{
VkResult err;
// Create Vulkan Instance
{
uint32_t glfw_extensions_count;
const char** glfw_extensions = glfwGetRequiredInstanceExtensions(&glfw_extensions_count);
uint32_t extensions_count;
const char** glfw_extensions = glfwGetRequiredInstanceExtensions(&extensions_count);
VkInstanceCreateInfo create_info = {};
create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
create_info.enabledExtensionCount = glfw_extensions_count;
#ifdef IMGUI_VULKAN_DEBUG_REPORT
// enabling multiple validation layers grouped as lunarg standard validation
const char* layers[] = {"VK_LAYER_LUNARG_standard_validation"};
create_info.enabledLayerCount = 1;
create_info.ppEnabledLayerNames = layers;
// need additional storage for char pointer to debug report extension
const char** extensions = (const char**)malloc(sizeof(const char*) * (extensions_count + 1));
for(size_t i = 0; i < extensions_count; i++)
extensions[i] = glfw_extensions[i];
extensions[ extensions_count ] = "VK_EXT_debug_report";
create_info.enabledExtensionCount = extensions_count+1;
create_info.ppEnabledExtensionNames = extensions;
#elif
create_info.enabledExtensionCount = extensions_count;
create_info.ppEnabledExtensionNames = glfw_extensions;
#endif // IMGUI_VULKAN_DEBUG_REPORT
err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
check_vk_result(err);
#ifdef IMGUI_VULKAN_DEBUG_REPORT
free(extensions);
// create the debug report callback
VkDebugReportCallbackCreateInfoEXT debug_report_ci ={};
debug_report_ci.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT;
debug_report_ci.flags = VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT;
debug_report_ci.pfnCallback = debug_report;
debug_report_ci.pUserData = NULL;
// get the proc address of the function pointer, required for used extensions
PFN_vkCreateDebugReportCallbackEXT vkCreateDebugReportCallbackEXT =
(PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkCreateDebugReportCallbackEXT");
err = vkCreateDebugReportCallbackEXT( g_Instance, &debug_report_ci, g_Allocator, &g_Debug_Report );
check_vk_result( err );
#endif // IMGUI_VULKAN_DEBUG_REPORT
}
// Create Window Surface
@ -381,6 +434,14 @@ static void cleanup_vulkan()
vkDestroyRenderPass(g_Device, g_RenderPass, g_Allocator);
vkDestroySwapchainKHR(g_Device, g_Swapchain, g_Allocator);
vkDestroySurfaceKHR(g_Instance, g_Surface, g_Allocator);
#ifdef IMGUI_VULKAN_DEBUG_REPORT
// get the proc address of the function pointer, required for used extensions
auto vkDestroyDebugReportCallbackEXT =
(PFN_vkDestroyDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkDestroyDebugReportCallbackEXT");
vkDestroyDebugReportCallbackEXT(g_Instance, g_Debug_Report, g_Allocator);
#endif // IMGUI_VULKAN_DEBUG_REPORT
vkDestroyDevice(g_Device, g_Allocator);
vkDestroyInstance(g_Instance, g_Allocator);
}