即使验证层和调试回调扩展已经启用并工作(它们响应错误的结构等等),但我仍然从vkCreateSwapchainKHR()
获得了一个“vkCreateSwapchainKHR()
”结果,并且没有验证层错误来确定错误。交换链创建(使用GTX 970 ):
VkBool32 isSupported = false;
vkGetPhysicalDeviceSurfaceSupportKHR( physicalDevices[0], 0, surface, &isSupported);
if (!isSupported) {
std::cout << "*ERROR* This device doesn't support surfaces" << std::endl;
}
VkSurfaceCapabilitiesKHR surfCaps;
vkGetPhysicalDeviceSurfaceCapabilitiesKHR(physicalDevices[0], surface, &surfCaps);
std::vector<VkSurfaceFormatKHR> deviceFormats;
uint32_t formatCount;
vkGetPhysicalDeviceSurfaceFormatsKHR(physicalDevices[0], surface, &formatCount, nullptr);
deviceFormats.resize(formatCount);
vkGetPhysicalDeviceSurfaceFormatsKHR(physicalDevices[0], surface, &formatCount, deviceFormats.data());
swapChainInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
swapChainInfo.pNext = nullptr;
swapChainInfo.flags = 0;
swapChainInfo.surface = surface;
swapChainInfo.minImageCount = surfCaps.minImageCount;
swapChainInfo.imageFormat = VK_FORMAT_B8G8R8A8_UNORM;
swapChainInfo.imageColorSpace = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR;
swapChainInfo.imageExtent = surfCaps.currentExtent;
swapChainInfo.imageArrayLayers = 1;
swapChainInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
swapChainInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
swapChainInfo.queueFamilyIndexCount = 0;
swapChainInfo.pQueueFamilyIndices = VK_NULL_HANDLE;
swapChainInfo.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
swapChainInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
swapChainInfo.presentMode = VK_PRESENT_MODE_FIFO_KHR;
swapChainInfo.clipped = VK_TRUE; // TODO : TEST clipping against another window
swapChainInfo.oldSwapchain = VK_NULL_HANDLE;
result = vkCreateSwapchainKHR( device, &swapChainInfo, nullptr, &swapChain );
if (result) {
std::cout << "*ERROR* Swapchain Creation Failed :" << result << std::endl;
}
使用GLFW创建曲面(不返回任何错误):
if (result = glfwCreateWindowSurface(instance, window, nullptr, &surface))
{
std::cout << "*ERROR* Surface Creation Failed : " << result << std::endl;
}
发布于 2017-09-13 15:35:45
vkCreateSwapchainKHR
的验证失败有很多原因(查看validation.cpp中的PreCallValidateCreateSwapchainKHR
)。
这里可能没有足够的代码来说明其失败的原因,例如,失败可能是由于一个无效的表面。但是,要确定问题所在,它应该在调试日志中给出一条失败消息,这将确切地告诉您原因。在尝试创建交换链之前,您应该通过调用CreateDebugReportCallbackEXT
来启用它。这还需要您启用VK_EXT_debug_report
扩展。详情请参见这里。
发布于 2017-09-13 17:19:22
关于您的代码(可能导致问题的原因),只需几点:
VkResult
命令的vkGet*
swapChainInfo.imageFormat
中支持的格式检查deviceFormats
。surfCaps.currentExtent
可以是0xFFFFFFFF
的情况。swapChainInfo.pQueueFamilyIndices
是指针而不是句柄;使用nullptr
swapChainInfo.preTransform
与surfCaps.supportedTransforms
swapChainInfo.compositeAlpha
与surfCaps.supportedCompositeAlpha
https://stackoverflow.com/questions/46196940
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