Add FindVulkan.cmake.

This adds FindVulkan with corresponding tests.

Help/manual/cmake-modules.7.rst

@@ -209,6 +209,7 @@ All Modules
    /module/FindTIFF
    /module/FindUnixCommands
    /module/FindVTK
+   /module/FindVulkan
    /module/FindWget
    /module/FindWish
    /module/FindwxWidgets

Help/module/FindVulkan.rst

@@ -0,0 +1 @@
+.. cmake-module:: ../../Modules/FindVulkan.cmake

Help/release/dev/FindVulkan.rst

@@ -0,0 +1,4 @@
+FindVulkan
+----------
+
+* A :module:`FindVulkan` module was added.

Modules/FindVulkan.cmake

@@ -0,0 +1,85 @@
+#.rst:
+# FindVulkan
+# ----------
+#
+# Try to find Vulkan
+#
+# IMPORTED Targets
+# ^^^^^^^^^^^^^^^^
+#
+# This module defines :prop_tgt:`IMPORTED` target ``Vulkan::Vulkan``, if
+# Vulkan has been found.
+#
+# Result Variables
+# ^^^^^^^^^^^^^^^^
+#
+# This module defines the following variables::
+#
+#   Vulkan_FOUND          - True if Vulkan was found
+#   Vulkan_INCLUDE_DIRS   - include directories for Vulkan
+#   Vulkan_LIBRARIES      - link against this library to use Vulkan
+#
+# The module will also define two cache variables::
+#
+#   Vulkan_INCLUDE_DIR    - the Vulkan include directory
+#   Vulkan_LIBRARY        - the path to the Vulkan library
+#
+
+#=============================================================================
+# Copyright 2016 Matthaeus G. Chajdas
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+if(WIN32)
+  find_path(Vulkan_INCLUDE_DIR
+    NAMES vulkan/vulkan.h
+    PATHS
+      "$ENV{VULKAN_SDK}/Include"
+    )
+
+  if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+    find_library(Vulkan_LIBRARY
+      NAMES vulkan-1
+      PATHS
+        "$ENV{VULKAN_SDK}/Bin")
+  elseif(CMAKE_SIZEOF_VOID_P EQUAL 4)
+    find_library(Vulkan_LIBRARY
+      NAMES vulkan-1
+      PATHS
+        "$ENV{VULKAN_SDK}/Bin32")
+  endif()
+else()
+    find_path(Vulkan_INCLUDE_DIR
+      NAMES vulkan/vulkan.h
+      PATHS
+        "$ENV{VULKAN_SDK}/include")
+    find_library(Vulkan_LIBRARY
+      NAMES vulkan
+      PATHS
+        "$ENV{VULKAN_SDK}/lib")
+endif()
+
+set(Vulkan_LIBRARIES ${Vulkan_LIBRARY})
+set(Vulkan_INCLUDE_DIRS ${Vulkan_INCLUDE_DIR})
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(Vulkan
+  DEFAULT_MSG
+  Vulkan_LIBRARY Vulkan_INCLUDE_DIR)
+
+mark_as_advanced(Vulkan_INCLUDE_DIR Vulkan_LIBRARY)
+
+if(Vulkan_FOUND AND NOT TARGET Vulkan::Vulkan)
+  add_library(Vulkan::Vulkan UNKNOWN IMPORTED)
+  set_target_properties(Vulkan::Vulkan PROPERTIES
+    IMPORTED_LOCATION "${Vulkan_LIBRARIES}"
+    INTERFACE_INCLUDE_DIRECTORIES "${Vulkan_INCLUDE_DIRS}")
+endif()

Tests/CMakeLists.txt

@@ -1394,6 +1394,10 @@ ${CMake_BINARY_DIR}/bin/cmake -DDIR=dev -P ${CMake_SOURCE_DIR}/Utilities/Release
     add_subdirectory(FindTIFF)
   endif()
 
+  if(CMake_TEST_FindVulkan)
+    add_subdirectory(FindVulkan)
+  endif()
+
   if(CMake_TEST_FindXalanC)
     add_subdirectory(FindXalanC)
   endif()

Tests/FindVulkan/CMakeLists.txt

@@ -0,0 +1,10 @@
+add_test(NAME FindVulkan.Test COMMAND
+  ${CMAKE_CTEST_COMMAND} -C $<CONFIGURATION>
+  --build-and-test
+  "${CMake_SOURCE_DIR}/Tests/FindVulkan/Test"
+  "${CMake_BINARY_DIR}/Tests/FindVulkan/Test"
+  ${build_generator_args}
+  --build-project TestFindVulkan
+  --build-options ${build_options}
+  --test-command ${CMAKE_CTEST_COMMAND} -V -C $<CONFIGURATION>
+  )

Tests/FindVulkan/Test/CMakeLists.txt

@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.4)
+project(TestFindVulkan C)
+include(CTest)
+
+SET(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/../../)
+find_package(Vulkan REQUIRED)
+
+add_executable(test_tgt main.c)
+target_link_libraries(test_tgt Vulkan::Vulkan)
+add_test(NAME test_tgt COMMAND test_tgt)
+
+add_executable(test_var main.c)
+target_include_directories(test_var PRIVATE ${Vulkan_INCLUDE_DIRS})
+target_link_libraries(test_var PRIVATE ${Vulkan_LIBRARIES})
+add_test(NAME test_var COMMAND test_var)

Tests/FindVulkan/Test/main.c

@@ -0,0 +1,29 @@
+#include <vulkan/vulkan.h>
+
+int main()
+{
+  VkInstanceCreateInfo instanceCreateInfo = {};
+  instanceCreateInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
+
+  VkApplicationInfo applicationInfo = {};
+  applicationInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
+  applicationInfo.apiVersion = VK_API_VERSION_1_0;
+  applicationInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
+  applicationInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
+  applicationInfo.pApplicationName = "CMake Test application";
+  applicationInfo.pEngineName = "CMake Test Engine";
+
+  instanceCreateInfo.pApplicationInfo = &applicationInfo;
+
+  VkInstance instance = VK_NULL_HANDLE;
+  vkCreateInstance(&instanceCreateInfo, NULL, &instance);
+
+  // We can't assert here because in general vkCreateInstance will return an
+  // error if no driver is found - but if we get here, FindVulkan is working
+
+  if (instance != VK_NULL_HANDLE) {
+      vkDestroyInstance (instance, NULL);
+  }
+
+  return 0;
+}