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Fixed all issues found by vulkan debug report. Reasons for the major design changes are commented.
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@ -26,10 +26,9 @@ static uint32_t g_QueueFamily = 0;
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static VkQueue g_Queue = VK_NULL_HANDLE;
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static VkDebugReportCallbackEXT g_Debug_Report = VK_NULL_HANDLE;
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static VkFormat g_ImageFormat = VK_FORMAT_B8G8R8A8_UNORM;
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static VkFormat g_ViewFormat = VK_FORMAT_B8G8R8A8_UNORM;
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static VkColorSpaceKHR g_ColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
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static VkSurfaceFormatKHR g_SurfaceFormat;
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static VkImageSubresourceRange g_ImageRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1};
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static VkPresentModeKHR g_PresentMode;
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static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
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static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE;
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@ -79,19 +78,14 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
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VkSwapchainCreateInfoKHR info = {};
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info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
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info.surface = g_Surface;
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info.imageFormat = g_ImageFormat;
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info.imageColorSpace = g_ColorSpace;
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info.imageFormat = g_SurfaceFormat.format;
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info.imageColorSpace = g_SurfaceFormat.colorSpace;
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info.imageArrayLayers = 1;
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info.imageUsage |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
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info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
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info.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
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info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
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#ifdef IMGUI_UNLIMITED_FRAME_RATE
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info.presentMode = VK_PRESENT_MODE_IMMEDIATE_KHR;
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#else
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info.presentMode = VK_PRESENT_MODE_FIFO_KHR;
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#endif // IMGUI_UNLIMITED_FRAME_RATE
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info.presentMode = g_PresentMode;
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info.clipped = VK_TRUE;
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info.oldSwapchain = old_swapchain;
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VkSurfaceCapabilitiesKHR cap;
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@ -129,7 +123,7 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
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// Create the Render Pass:
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{
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VkAttachmentDescription attachment = {};
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attachment.format = g_ViewFormat;
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attachment.format = g_SurfaceFormat.format;
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attachment.samples = VK_SAMPLE_COUNT_1_BIT;
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attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
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@ -159,7 +153,7 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
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VkImageViewCreateInfo info = {};
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info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
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info.viewType = VK_IMAGE_VIEW_TYPE_2D;
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info.format = g_ViewFormat;
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info.format = g_SurfaceFormat.format;
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info.components.r = VK_COMPONENT_SWIZZLE_R;
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info.components.g = VK_COMPONENT_SWIZZLE_G;
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info.components.b = VK_COMPONENT_SWIZZLE_B;
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@ -228,7 +222,7 @@ static void setup_vulkan(GLFWwindow* window)
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// need additional storage for char pointer to debug report extension
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const char** extensions = (const char**)malloc(sizeof(const char*) * (extensions_count + 1));
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for(size_t i = 0; i < extensions_count; i++)
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for (size_t i = 0; i < extensions_count; i++)
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extensions[i] = glfw_extensions[i];
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extensions[ extensions_count ] = "VK_EXT_debug_report";
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create_info.enabledExtensionCount = extensions_count+1;
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@ -266,11 +260,26 @@ static void setup_vulkan(GLFWwindow* window)
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check_vk_result(err);
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}
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// Get GPU (WARNING here we assume the first gpu is one we can use)
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// Get GPU
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{
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uint32_t count = 1;
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err = vkEnumeratePhysicalDevices(g_Instance, &count, &g_Gpu);
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uint32_t gpu_count;
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err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, NULL);
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check_vk_result(err);
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if( gpu_count == 1 ) { // only one gpu, assume it has a graphics queue family and use it
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err = vkEnumeratePhysicalDevices( g_Instance, &gpu_count, &g_Gpu );
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check_vk_result( err );
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} else {
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VkPhysicalDevice* gpus = (VkPhysicalDevice*)malloc(sizeof(VkPhysicalDevice) * gpu_count);
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err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, gpus);
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check_vk_result(err);
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// here a number > 1 of GPUs got reported, you should find the best fit GPU for your purpose
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// e.g. VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU if available, or with the greatest memory available, etc.
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// for sake of simplicity we'll just take the first one, assuming it has a graphics queue family
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g_Gpu = gpus[0];
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free(gpus);
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}
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}
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// Get queue
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@ -303,26 +312,85 @@ static void setup_vulkan(GLFWwindow* window)
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// Get Surface Format
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{
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VkFormat image_view_format[][2] = {{VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_B8G8R8A8_UNORM}, {VK_FORMAT_B8G8R8A8_SRGB, VK_FORMAT_B8G8R8A8_UNORM}};
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// Per Spec Format and View Format are expected to be the same unless VK_IMAGE_CREATE_MUTABLE_BIT was set at image creation
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// Assuming that the default behaviour is without setting this bit, there is no need for seperate Spapchain image and image view format
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// additionally severeal new color spaces were introduced with Vulkan Spec v1.0.40
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// hence we must make sure that a format with the mostly available color space, VK_COLOR_SPACE_SRGB_NONLINEAR_KHR, is found and used
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uint32_t count;
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vkGetPhysicalDeviceSurfaceFormatsKHR(g_Gpu, g_Surface, &count, NULL);
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VkSurfaceFormatKHR *formats = (VkSurfaceFormatKHR*)malloc(sizeof(VkSurfaceFormatKHR) * count);
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vkGetPhysicalDeviceSurfaceFormatsKHR(g_Gpu, g_Surface, &count, formats);
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for (size_t i = 0; i < sizeof(image_view_format) / sizeof(image_view_format[0]); i++)
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// first check if only one format, VK_FORMAT_UNDEFINED, is available, which would imply that any format is available
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if (count == 1)
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{
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for (uint32_t j = 0; j < count; j++)
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if( formats[0].format == VK_FORMAT_UNDEFINED )
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{
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if (formats[j].format == image_view_format[i][0])
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{
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g_ImageFormat = image_view_format[i][0];
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g_ViewFormat = image_view_format[i][1];
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g_ColorSpace = formats[j].colorSpace;
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g_SurfaceFormat.format = VK_FORMAT_B8G8R8A8_UNORM;
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g_SurfaceFormat.colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
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}
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else
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{ // no point in searching another format
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g_SurfaceFormat = formats[0];
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}
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}
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else
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{
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// request several formats, the first found will be used
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VkFormat requestSurfaceImageFormat[] = {VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM};
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VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
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bool requestedFound = false;
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for (size_t i = 0; i < sizeof(requestSurfaceImageFormat) / sizeof(requestSurfaceImageFormat[0]); i++)
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{
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if( requestedFound ) {
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break;
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}
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for (uint32_t j = 0; j < count; j++)
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{
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if (formats[j].format == requestSurfaceImageFormat[i] && formats[j].colorSpace == requestSurfaceColorSpace)
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{
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g_SurfaceFormat = formats[j];
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requestedFound = true;
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}
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}
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}
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// if none of the requested image formats could be found, use the first available
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if (!requestedFound)
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{
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g_SurfaceFormat = formats[0];
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}
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}
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free(formats);
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}
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// Get Present Mode
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{
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// Requst a certain mode and confirm that it is available. If not use VK_PRESENT_MODE_FIFO_KHR which is mandatory
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#ifdef IMGUI_UNLIMITED_FRAME_RATE
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g_PresentMode = VK_PRESENT_MODE_IMMEDIATE_KHR;
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#else
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g_PresentMode = VK_PRESENT_MODE_FIFO_KHR;
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#endif
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uint32_t count = 0;
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vkGetPhysicalDeviceSurfacePresentModesKHR( g_Gpu, g_Surface, &count, nullptr );
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VkPresentModeKHR* presentModes = ( VkPresentModeKHR* )malloc( sizeof( VkQueueFamilyProperties ) * count );
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vkGetPhysicalDeviceSurfacePresentModesKHR( g_Gpu, g_Surface, &count, presentModes );
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bool presentModeAvailable = false;
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for (size_t i = 0; i < count; i++)
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{
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if (presentModes[i] == g_PresentMode)
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{
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presentModeAvailable = true;
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break;
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}
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}
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if( !presentModeAvailable )
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g_PresentMode = VK_PRESENT_MODE_FIFO_KHR; // allways available
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}
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// Create Logical Device
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{
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int device_extension_count = 1;
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