Drezil/imgui
1
0
Fork 0
mirror of https://github.com/Drezil/imgui.git synced 2024-12-18 06:06:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fixed all issues found by vulkan debug report. Reasons for the major design changes are commented.

Browse Source
This commit is contained in:
Peter Particle 2017-02-26 17:31:02 +01:00 committed by omar
parent 89d03d5cca
commit 33874073dc
1 changed files with 93 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

118
examples/vulkan_example/main.cpp
View File

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