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Cocoa: Add basic support for Vulkan via MoltenVK

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This adds basic support for MoltenVK, a Vulkan implementation on top of
Metal, on macOS 10.11 and later.  It looks for MoltenVK in the process
via RTLD_DEFAULT symbol lookup if _GLFW_VULKAN_STATIC is disabled.

glfwCreateWindowSurface now creates and sets a CAMetalLayer for the
window content view, which is required for MoltenVK to function.

You must help CMake find MoltenVK for the Vulkan test to be built.

Fixes #870.
This commit is contained in:
Camilla Berglund
2016-10-14 01:46:56 +02:00
parent c3db1cae3f
commit e94d16667b
12 changed files with 182 additions and 22 deletions
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19
include/GLFW/glfw3.h
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@@ -176,7 +176,11 @@ extern "C" {
#endif
#endif
#if defined(GLFW_INCLUDE_VULKAN)
#include <vulkan/vulkan.h>
#if defined(__APPLE__)
#include <MoltenVK/vulkan/vulkan.h>
#else
#include <vulkan/vulkan.h>
#endif
#endif
#if defined(GLFW_DLL) && defined(_GLFW_BUILD_DLL)
@@ -4225,6 +4229,9 @@ GLFWAPI int glfwVulkanSupported(void);
* returned array, as it is an error to specify an extension more than once in
* the `VkInstanceCreateInfo` struct.
*
* @remark @macos This function currently only supports the
* `VK_MVK_macos_surface` extension from MoltenVK.
*
* @pointer_lifetime The returned array is allocated and freed by GLFW. You
* should not free it yourself. It is guaranteed to be valid only until the
* library is terminated.
@@ -4305,6 +4312,10 @@ GLFWAPI GLFWvkproc glfwGetInstanceProcAddress(VkInstance instance, const char* p
* @errors Possible errors include @ref GLFW_NOT_INITIALIZED, @ref
* GLFW_API_UNAVAILABLE and @ref GLFW_PLATFORM_ERROR.
*
* @remark @macos This function currently always returns `GLFW_TRUE`, as the
* `VK_MVK_macos_surface` extension does not provide
* a `vkGetPhysicalDevice*PresentationSupport` type function.
*
* @thread_safety This function may be called from any thread. For
* synchronization details of Vulkan objects, see the Vulkan specification.
*
@@ -4354,6 +4365,12 @@ GLFWAPI int glfwGetPhysicalDevicePresentationSupport(VkInstance instance, VkPhys
* @ref glfwVulkanSupported and @ref glfwGetRequiredInstanceExtensions should
* eliminate almost all occurrences of these errors.
*
* @remark @macos This function currently only supports the
* `VK_MVK_macos_surface` extension from MoltenVK.
*
* @remark @macos This function creates and sets a `CAMetalLayer` instance for
* the window content view, which is required for MoltenVK to function.
*
* @thread_safety This function may be called from any thread. For
* synchronization details of Vulkan objects, see the Vulkan specification.
*