Null: Add Vulkan 'window' surface creation

This adds support for Vulkan 'window' surface creation on the Null
platform via the VK_EXT_headless_surface extension, where available.

Tested with MoltenVK.
This commit is contained in:
Camilla Löwy 2024-03-11 11:33:51 +01:00
parent 42dc1ffaee
commit 860c8ef38f
5 changed files with 46 additions and 3 deletions

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@ -124,6 +124,7 @@ information on what to include when reporting a bug.
- Added `GLFW_UNLIMITED_MOUSE_BUTTONS` input mode that allows mouse buttons beyond
the limit of the mouse button tokens to be reported (#2423)
- [Wayland] Bugfix: The fractional scaling related objects were not destroyed
- [Null] Added Vulkan 'window' surface creation via `VK_EXT_headless_surface`
## Contact

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@ -277,6 +277,7 @@ typedef enum VkStructureType
VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR = 1000009000,
VK_STRUCTURE_TYPE_MACOS_SURFACE_CREATE_INFO_MVK = 1000123000,
VK_STRUCTURE_TYPE_METAL_SURFACE_CREATE_INFO_EXT = 1000217000,
VK_STRUCTURE_TYPE_HEADLESS_SURFACE_CREATE_INFO_EXT = 1000256000,
VK_STRUCTURE_TYPE_MAX_ENUM = 0x7FFFFFFF
} VkStructureType;
@ -861,6 +862,7 @@ struct _GLFWlibrary
GLFWbool KHR_xlib_surface;
GLFWbool KHR_xcb_surface;
GLFWbool KHR_wayland_surface;
GLFWbool EXT_headless_surface;
} vk;
struct {

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@ -156,6 +156,17 @@
#define GLFW_NULL_SC_MENU 120
#define GLFW_NULL_SC_LAST GLFW_NULL_SC_MENU
typedef VkFlags VkHeadlessSurfaceCreateFlagsEXT;
typedef struct VkHeadlessSurfaceCreateInfoEXT
{
VkStructureType sType;
const void* pNext;
VkHeadlessSurfaceCreateFlagsEXT flags;
} VkHeadlessSurfaceCreateInfoEXT;
typedef VkResult (APIENTRY *PFN_vkCreateHeadlessSurfaceEXT)(VkInstance,const VkHeadlessSurfaceCreateInfoEXT*,const VkAllocationCallbacks*,VkSurfaceKHR*);
// Null-specific per-window data
//
typedef struct _GLFWwindowNull

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@ -28,6 +28,7 @@
#include "internal.h"
#include <stdlib.h>
#include <string.h>
static void applySizeLimits(_GLFWwindow* window, int* width, int* height)
{
@ -699,13 +700,18 @@ int _glfwGetKeyScancodeNull(int key)
void _glfwGetRequiredInstanceExtensionsNull(char** extensions)
{
if (!_glfw.vk.KHR_surface || !_glfw.vk.EXT_headless_surface)
return;
extensions[0] = "VK_KHR_surface";
extensions[1] = "VK_EXT_headless_surface";
}
GLFWbool _glfwGetPhysicalDevicePresentationSupportNull(VkInstance instance,
VkPhysicalDevice device,
uint32_t queuefamily)
{
return GLFW_FALSE;
return GLFW_TRUE;
}
VkResult _glfwCreateWindowSurfaceNull(VkInstance instance,
@ -713,7 +719,28 @@ VkResult _glfwCreateWindowSurfaceNull(VkInstance instance,
const VkAllocationCallbacks* allocator,
VkSurfaceKHR* surface)
{
// This seems like the most appropriate error to return here
return VK_ERROR_EXTENSION_NOT_PRESENT;
PFN_vkCreateHeadlessSurfaceEXT vkCreateHeadlessSurfaceEXT =
(PFN_vkCreateHeadlessSurfaceEXT)
vkGetInstanceProcAddr(instance, "vkCreateHeadlessSurfaceEXT");
if (!vkCreateHeadlessSurfaceEXT)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"Null: Vulkan instance missing VK_EXT_headless_surface extension");
return VK_ERROR_EXTENSION_NOT_PRESENT;
}
VkHeadlessSurfaceCreateInfoEXT sci;
memset(&sci, 0, sizeof(sci));
sci.sType = VK_STRUCTURE_TYPE_HEADLESS_SURFACE_CREATE_INFO_EXT;
const VkResult err = vkCreateHeadlessSurfaceEXT(instance, &sci, allocator, surface);
if (err)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Null: Failed to create Vulkan surface: %s",
_glfwGetVulkanResultString(err));
}
return err;
}

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@ -142,6 +142,8 @@ GLFWbool _glfwInitVulkan(int mode)
_glfw.vk.KHR_xcb_surface = GLFW_TRUE;
else if (strcmp(ep[i].extensionName, "VK_KHR_wayland_surface") == 0)
_glfw.vk.KHR_wayland_surface = GLFW_TRUE;
else if (strcmp(ep[i].extensionName, "VK_EXT_headless_surface") == 0)
_glfw.vk.EXT_headless_surface = GLFW_TRUE;
}
_glfw_free(ep);