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Examples: Vulkan: Formatting and tweaks (to match SDL's main).

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This commit is contained in:
omar 2018-02-21 22:39:49 +01:00
parent bcdfd5d61c
commit 387f724d33
1 changed files with 27 additions and 27 deletions
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54
examples/vulkan_example/main.cpp
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@ -1,4 +1,4 @@
// ImGui - standalone example application for Glfw + Vulkan, using programmable pipeline // ImGui - standalone example application for Glfw + Vulkan
// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp. // If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
#include "imgui.h" #include "imgui.h"
@ -10,6 +10,7 @@
#define GLFW_INCLUDE_NONE #define GLFW_INCLUDE_NONE
#define GLFW_INCLUDE_VULKAN #define GLFW_INCLUDE_VULKAN
#include <GLFW/glfw3.h> #include <GLFW/glfw3.h>
#include <vulkan/vulkan.h>
#define IMGUI_MAX_POSSIBLE_BACK_BUFFERS 16 #define IMGUI_MAX_POSSIBLE_BACK_BUFFERS 16
#define IMGUI_UNLIMITED_FRAME_RATE #define IMGUI_UNLIMITED_FRAME_RATE
@ -29,7 +30,7 @@ static VkQueue g_Queue = VK_NULL_HANDLE;
static VkDebugReportCallbackEXT g_Debug_Report = VK_NULL_HANDLE; static VkDebugReportCallbackEXT g_Debug_Report = VK_NULL_HANDLE;
static VkSurfaceFormatKHR g_SurfaceFormat; static VkSurfaceFormatKHR g_SurfaceFormat;
static VkImageSubresourceRange g_ImageRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1}; static VkImageSubresourceRange g_ImageRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 };
static VkPresentModeKHR g_PresentMode; static VkPresentModeKHR g_PresentMode;
static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE; static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
@ -59,7 +60,7 @@ static void check_vk_result(VkResult err)
abort(); abort();
} }
static void resize_vulkan(GLFWwindow* /*window*/, int w, int h) static void resize_vulkan(GLFWwindow*, int w, int h)
{ {
VkResult err; VkResult err;
VkSwapchainKHR old_swapchain = g_Swapchain; VkSwapchainKHR old_swapchain = g_Swapchain;
@ -194,37 +195,34 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
static VKAPI_ATTR VkBool32 VKAPI_CALL 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) VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData)
{ {
printf("[vulkan] ObjectType: %i\nMessage: %s\n\n", objectType, pMessage ); printf("[vulkan] ObjectType: %i\nMessage: %s\n\n", objectType, pMessage);
return VK_FALSE; return VK_FALSE;
} }
#endif // IMGUI_VULKAN_DEBUG_REPORT #endif // IMGUI_VULKAN_DEBUG_REPORT
static void setup_vulkan(GLFWwindow* window) static void setup_vulkan(GLFWwindow* window, const char** extensions, uint32_t extensions_count)
{ {
VkResult err; VkResult err;
// Create Vulkan Instance // Create Vulkan Instance
{ {
uint32_t extensions_count;
const char** glfw_extensions = glfwGetRequiredInstanceExtensions(&extensions_count);
VkInstanceCreateInfo create_info = {}; VkInstanceCreateInfo create_info = {};
create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO; create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
create_info.enabledExtensionCount = extensions_count; create_info.enabledExtensionCount = extensions_count;
create_info.ppEnabledExtensionNames = glfw_extensions; create_info.ppEnabledExtensionNames = extensions;
#ifdef IMGUI_VULKAN_DEBUG_REPORT #ifdef IMGUI_VULKAN_DEBUG_REPORT
// enabling multiple validation layers grouped as lunarg standard validation // enabling multiple validation layers grouped as lunarg standard validation
const char* layers[] = {"VK_LAYER_LUNARG_standard_validation"}; const char* layers[] = { "VK_LAYER_LUNARG_standard_validation" };
create_info.enabledLayerCount = 1; create_info.enabledLayerCount = 1;
create_info.ppEnabledLayerNames = layers; create_info.ppEnabledLayerNames = layers;
// need additional storage for char pointer to debug report extension // need additional storage for char pointer to debug report extension
const char** extensions = (const char**)malloc(sizeof(const char*) * (extensions_count + 1)); const char** extensions = (const char**)malloc(sizeof(const char*) * (extensions_count + 1));
for (size_t i = 0; i < extensions_count; i++) for (size_t i = 0; i < extensions_count; i++)
extensions[i] = glfw_extensions[i]; extensions[i] = extensions[i];
extensions[ extensions_count ] = "VK_EXT_debug_report"; extensions[extensions_count] = "VK_EXT_debug_report";
create_info.enabledExtensionCount = extensions_count+1; create_info.enabledExtensionCount = extensions_count + 1;
create_info.ppEnabledExtensionNames = extensions; create_info.ppEnabledExtensionNames = extensions;
#endif // IMGUI_VULKAN_DEBUG_REPORT #endif // IMGUI_VULKAN_DEBUG_REPORT
@ -235,7 +233,7 @@ static void setup_vulkan(GLFWwindow* window)
free(extensions); free(extensions);
// create the debug report callback // create the debug report callback
VkDebugReportCallbackCreateInfoEXT debug_report_ci ={}; VkDebugReportCallbackCreateInfoEXT debug_report_ci = {};
debug_report_ci.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT; 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.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.pfnCallback = debug_report;
@ -245,12 +243,12 @@ static void setup_vulkan(GLFWwindow* window)
PFN_vkCreateDebugReportCallbackEXT vkCreateDebugReportCallbackEXT = PFN_vkCreateDebugReportCallbackEXT vkCreateDebugReportCallbackEXT =
(PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkCreateDebugReportCallbackEXT"); (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkCreateDebugReportCallbackEXT");
err = vkCreateDebugReportCallbackEXT( g_Instance, &debug_report_ci, g_Allocator, &g_Debug_Report ); err = vkCreateDebugReportCallbackEXT(g_Instance, &debug_report_ci, g_Allocator, &g_Debug_Report);
check_vk_result(err); check_vk_result(err);
#endif // IMGUI_VULKAN_DEBUG_REPORT #endif // IMGUI_VULKAN_DEBUG_REPORT
} }
// Create Window Surface // Create Window Surface (with GLFW)
{ {
err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &g_Surface); err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &g_Surface);
check_vk_result(err); check_vk_result(err);
@ -315,7 +313,7 @@ static void setup_vulkan(GLFWwindow* window)
// first check if only one format, VK_FORMAT_UNDEFINED, is available, which would imply that any format is available // first check if only one format, VK_FORMAT_UNDEFINED, is available, which would imply that any format is available
if (count == 1) if (count == 1)
{ {
if( formats[0].format == VK_FORMAT_UNDEFINED ) if (formats[0].format == VK_FORMAT_UNDEFINED)
{ {
g_SurfaceFormat.format = VK_FORMAT_B8G8R8A8_UNORM; g_SurfaceFormat.format = VK_FORMAT_B8G8R8A8_UNORM;
g_SurfaceFormat.colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR; g_SurfaceFormat.colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
@ -328,14 +326,13 @@ static void setup_vulkan(GLFWwindow* window)
else else
{ {
// request several formats, the first found will be used // request several formats, the first found will be used
VkFormat requestSurfaceImageFormat[] = {VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM}; VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR; VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
bool requestedFound = false; bool requestedFound = false;
for (size_t i = 0; i < sizeof(requestSurfaceImageFormat) / sizeof(requestSurfaceImageFormat[0]); i++) for (size_t i = 0; i < sizeof(requestSurfaceImageFormat) / sizeof(requestSurfaceImageFormat[0]); i++)
{ {
if( requestedFound ) { if (requestedFound)
break; break;
}
for (uint32_t j = 0; j < count; j++) for (uint32_t j = 0; j < count; j++)
{ {
if (formats[j].format == requestSurfaceImageFormat[i] && formats[j].colorSpace == requestSurfaceColorSpace) if (formats[j].format == requestSurfaceImageFormat[i] && formats[j].colorSpace == requestSurfaceColorSpace)
@ -375,7 +372,7 @@ static void setup_vulkan(GLFWwindow* window)
break; break;
} }
} }
if( !presentModeAvailable ) if (!presentModeAvailable)
g_PresentMode = VK_PRESENT_MODE_FIFO_KHR; // always available g_PresentMode = VK_PRESENT_MODE_FIFO_KHR; // always available
} }
@ -383,10 +380,10 @@ static void setup_vulkan(GLFWwindow* window)
// Create Logical Device // Create Logical Device
{ {
int device_extension_count = 1; int device_extension_count = 1;
const char* device_extensions[] = {"VK_KHR_swapchain"}; const char* device_extensions[] = { "VK_KHR_swapchain" };
const uint32_t queue_index = 0; const uint32_t queue_index = 0;
const uint32_t queue_count = 1; const uint32_t queue_count = 1;
const float queue_priority[] = {1.0f}; const float queue_priority[] = { 1.0f };
VkDeviceQueueCreateInfo queue_info[1] = {}; VkDeviceQueueCreateInfo queue_info[1] = {};
queue_info[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO; queue_info[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
queue_info[0].queueFamilyIndex = g_QueueFamily; queue_info[0].queueFamilyIndex = g_QueueFamily;
@ -394,7 +391,7 @@ static void setup_vulkan(GLFWwindow* window)
queue_info[0].pQueuePriorities = queue_priority; queue_info[0].pQueuePriorities = queue_priority;
VkDeviceCreateInfo create_info = {}; VkDeviceCreateInfo create_info = {};
create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO; create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
create_info.queueCreateInfoCount = sizeof(queue_info)/sizeof(queue_info[0]); create_info.queueCreateInfoCount = sizeof(queue_info) / sizeof(queue_info[0]);
create_info.pQueueCreateInfos = queue_info; create_info.pQueueCreateInfos = queue_info;
create_info.enabledExtensionCount = device_extension_count; create_info.enabledExtensionCount = device_extension_count;
create_info.ppEnabledExtensionNames = device_extensions; create_info.ppEnabledExtensionNames = device_extensions;
@ -576,8 +573,8 @@ static void frame_present()
uint32_t PresentIndex = g_FrameIndex; uint32_t PresentIndex = g_FrameIndex;
#endif // IMGUI_UNLIMITED_FRAME_RATE #endif // IMGUI_UNLIMITED_FRAME_RATE
VkSwapchainKHR swapchains[1] = {g_Swapchain}; VkSwapchainKHR swapchains[1] = { g_Swapchain };
uint32_t indices[1] = {g_BackbufferIndices[PresentIndex]}; uint32_t indices[1] = { g_BackbufferIndices[PresentIndex] };
VkPresentInfoKHR info = {}; VkPresentInfoKHR info = {};
info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR; info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
info.waitSemaphoreCount = 1; info.waitSemaphoreCount = 1;
@ -612,7 +609,9 @@ int main(int, char**)
printf("GLFW: Vulkan Not Supported\n"); printf("GLFW: Vulkan Not Supported\n");
return 1; return 1;
} }
setup_vulkan(window); uint32_t extensions_count = 0;
const char** glfw_extensions = glfwGetRequiredInstanceExtensions(&extensions_count);
setup_vulkan(window, glfw_extensions, extensions_count);
// Setup ImGui binding // Setup ImGui binding
ImGui::CreateContext(); ImGui::CreateContext();
@ -739,6 +738,7 @@ int main(int, char**)
ImGui::ShowDemoWindow(&show_demo_window); ImGui::ShowDemoWindow(&show_demo_window);
} }
// Rendering
memcpy(&g_ClearValue.color.float32[0], &clear_color, 4 * sizeof(float)); memcpy(&g_ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));
frame_begin(); frame_begin();
ImGui_ImplVulkan_Render(g_CommandBuffer[g_FrameIndex]); ImGui_ImplVulkan_Render(g_CommandBuffer[g_FrameIndex]);