Merge branch 'master' of https://github.com/GPSnoopy/RayTracingInVulkan

README.md

@@ -66,6 +66,14 @@ sudo apt-get install curl unzip tar libxi-dev libxinerama-dev libxcursor-dev xor
 ./build_linux.sh
 ```
 
+Fedora Installation
+
+```
+sudo dnf install libXinerama-devel libXcursor-devel libX11-devel libXrandr-devel mesa-libGLU-devel pkgconfig ninja-build cmake gcc gcc-c++ vulkan-validation-layers-devel vulkan-headers vulkan-tools vulkan-loader-devel vulkan-loader glslang glslc
+./vcpkg_linux.sh
+./build_linux.sh
+```
+
 ## Random Thoughts
 
 - I suspect the RTX 2000 series RT cores to implement ray-AABB collision detection using reduced float precision. Early in the development, when trying to get the sphere procedural rendering to work, reporting an intersection every time the `rint` shader is invoked allowed to visualise the AABB of each procedural instance. The rendering of the bounding volume had many artifacts around the boxes edges, typical of reduced precision.

src/main.cpp

@@ -234,24 +234,24 @@ namespace
 
 			// We want a device that supports the ray tracing extension.
 			const auto extensions = Vulkan::GetEnumerateVector(device, static_cast<const char*>(nullptr), vkEnumerateDeviceExtensionProperties);
-			const auto hasRayTracing = std::find_if(extensions.begin(), extensions.end(), [](const VkExtensionProperties& extension)
+			const auto hasRayTracing = std::any_of(extensions.begin(), extensions.end(), [](const VkExtensionProperties& extension)
 			{
 				return strcmp(extension.extensionName, VK_KHR_RAY_TRACING_PIPELINE_EXTENSION_NAME) == 0;
 			});
 
-			if (hasRayTracing == extensions.end())
+			if (!hasRayTracing)
 			{
 				return false;
 			}
 
 			// We want a device with a graphics queue.
 			const auto queueFamilies = Vulkan::GetEnumerateVector(device, vkGetPhysicalDeviceQueueFamilyProperties);
-			const auto hasGraphicsQueue = std::find_if(queueFamilies.begin(), queueFamilies.end(), [](const VkQueueFamilyProperties& queueFamily)
+			const auto hasGraphicsQueue = std::any_of(queueFamilies.begin(), queueFamilies.end(), [](const VkQueueFamilyProperties& queueFamily)
 			{
 				return queueFamily.queueCount > 0 && queueFamily.queueFlags & VK_QUEUE_GRAPHICS_BIT;
 			});
 
-			return hasGraphicsQueue != queueFamilies.end();
+			return hasGraphicsQueue;
 		});
 
 		if (result == physicalDevices.end())