mirror of https://github.com/libsdl-org/SDL
266 lines
10 KiB
C
266 lines
10 KiB
C
/*
|
|
Simple DirectMedia Layer
|
|
Copyright (C) 2017, Mark Callow
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any damages
|
|
arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any purpose,
|
|
including commercial applications, and to alter it and redistribute it
|
|
freely, subject to the following restrictions:
|
|
|
|
1. The origin of this software must not be misrepresented; you must not
|
|
claim that you wrote the original software. If you use this software
|
|
in a product, an acknowledgment in the product documentation would be
|
|
appreciated but is not required.
|
|
2. Altered source versions must be plainly marked as such, and must not be
|
|
misrepresented as being the original software.
|
|
3. This notice may not be removed or altered from any source distribution.
|
|
*/
|
|
|
|
/**
|
|
* # CategoryVulkan
|
|
*
|
|
* Functions for creating Vulkan surfaces on SDL windows.
|
|
*
|
|
* For the most part, Vulkan operates independent of SDL, but it benefits from
|
|
* a little support during setup.
|
|
*
|
|
* Use SDL_Vulkan_GetInstanceExtensions() to get platform-specific bits for
|
|
* creating a VkInstance, then SDL_Vulkan_GetVkGetInstanceProcAddr() to get
|
|
* the appropriate function for querying Vulkan entry points. Then
|
|
* SDL_Vulkan_CreateSurface() will get you the final pieces you need to
|
|
* prepare for rendering into an SDL_Window with Vulkan.
|
|
*
|
|
* Unlike OpenGL, most of the details of "context" creation and window buffer
|
|
* swapping are handled by the Vulkan API directly, so SDL doesn't provide
|
|
* Vulkan equivalents of SDL_GL_SwapWindow(), etc; they aren't necessary.
|
|
*/
|
|
|
|
#ifndef SDL_vulkan_h_
|
|
#define SDL_vulkan_h_
|
|
|
|
#include <SDL3/SDL_stdinc.h>
|
|
#include <SDL3/SDL_error.h>
|
|
#include <SDL3/SDL_video.h>
|
|
|
|
#include <SDL3/SDL_begin_code.h>
|
|
/* Set up for C function definitions, even when using C++ */
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Avoid including vulkan.h, don't define VkInstance if it's already included */
|
|
#ifdef VULKAN_H_
|
|
#define NO_SDL_VULKAN_TYPEDEFS
|
|
#endif
|
|
#ifndef NO_SDL_VULKAN_TYPEDEFS
|
|
#define VK_DEFINE_HANDLE(object) typedef struct object##_T* object;
|
|
|
|
#if defined(__LP64__) || defined(_WIN64) || defined(__x86_64__) || defined(_M_X64) || defined(__ia64) || defined (_M_IA64) || defined(__aarch64__) || defined(__powerpc64__)
|
|
#define VK_DEFINE_NON_DISPATCHABLE_HANDLE(object) typedef struct object##_T *object;
|
|
#else
|
|
#define VK_DEFINE_NON_DISPATCHABLE_HANDLE(object) typedef uint64_t object;
|
|
#endif
|
|
|
|
VK_DEFINE_HANDLE(VkInstance)
|
|
VK_DEFINE_HANDLE(VkPhysicalDevice)
|
|
VK_DEFINE_NON_DISPATCHABLE_HANDLE(VkSurfaceKHR)
|
|
struct VkAllocationCallbacks;
|
|
|
|
/* Make sure to undef to avoid issues in case of later vulkan include */
|
|
#undef VK_DEFINE_HANDLE
|
|
#undef VK_DEFINE_NON_DISPATCHABLE_HANDLE
|
|
|
|
#endif /* !NO_SDL_VULKAN_TYPEDEFS */
|
|
|
|
/**
|
|
* \name Vulkan support functions
|
|
*/
|
|
/* @{ */
|
|
|
|
/**
|
|
* Dynamically load the Vulkan loader library.
|
|
*
|
|
* This should be called after initializing the video driver, but before
|
|
* creating any Vulkan windows. If no Vulkan loader library is loaded, the
|
|
* default library will be loaded upon creation of the first Vulkan window.
|
|
*
|
|
* It is fairly common for Vulkan applications to link with libvulkan instead
|
|
* of explicitly loading it at run time. This will work with SDL provided the
|
|
* application links to a dynamic library and both it and SDL use the same
|
|
* search path.
|
|
*
|
|
* If you specify a non-NULL `path`, an application should retrieve all of the
|
|
* Vulkan functions it uses from the dynamic library using
|
|
* SDL_Vulkan_GetVkGetInstanceProcAddr unless you can guarantee `path` points
|
|
* to the same vulkan loader library the application linked to.
|
|
*
|
|
* On Apple devices, if `path` is NULL, SDL will attempt to find the
|
|
* `vkGetInstanceProcAddr` address within all the Mach-O images of the current
|
|
* process. This is because it is fairly common for Vulkan applications to
|
|
* link with libvulkan (and historically MoltenVK was provided as a static
|
|
* library). If it is not found, on macOS, SDL will attempt to load
|
|
* `vulkan.framework/vulkan`, `libvulkan.1.dylib`,
|
|
* `MoltenVK.framework/MoltenVK`, and `libMoltenVK.dylib`, in that order. On
|
|
* iOS, SDL will attempt to load `libMoltenVK.dylib`. Applications using a
|
|
* dynamic framework or .dylib must ensure it is included in its application
|
|
* bundle.
|
|
*
|
|
* On non-Apple devices, application linking with a static libvulkan is not
|
|
* supported. Either do not link to the Vulkan loader or link to a dynamic
|
|
* library version.
|
|
*
|
|
* \param path the platform dependent Vulkan loader library name or NULL.
|
|
* \returns true on success or false on failure; call SDL_GetError() for more
|
|
* information.
|
|
*
|
|
* \since This function is available since SDL 3.1.3.
|
|
*
|
|
* \sa SDL_Vulkan_GetVkGetInstanceProcAddr
|
|
* \sa SDL_Vulkan_UnloadLibrary
|
|
*/
|
|
extern SDL_DECLSPEC bool SDLCALL SDL_Vulkan_LoadLibrary(const char *path);
|
|
|
|
/**
|
|
* Get the address of the `vkGetInstanceProcAddr` function.
|
|
*
|
|
* This should be called after either calling SDL_Vulkan_LoadLibrary() or
|
|
* creating an SDL_Window with the `SDL_WINDOW_VULKAN` flag.
|
|
*
|
|
* The actual type of the returned function pointer is
|
|
* PFN_vkGetInstanceProcAddr, but that isn't available because the Vulkan
|
|
* headers are not included here. You should cast the return value of this
|
|
* function to that type, e.g.
|
|
*
|
|
* `vkGetInstanceProcAddr =
|
|
* (PFN_vkGetInstanceProcAddr)SDL_Vulkan_GetVkGetInstanceProcAddr();`
|
|
*
|
|
* \returns the function pointer for `vkGetInstanceProcAddr` or NULL on
|
|
* failure; call SDL_GetError() for more information.
|
|
*
|
|
* \since This function is available since SDL 3.1.3.
|
|
*/
|
|
extern SDL_DECLSPEC SDL_FunctionPointer SDLCALL SDL_Vulkan_GetVkGetInstanceProcAddr(void);
|
|
|
|
/**
|
|
* Unload the Vulkan library previously loaded by SDL_Vulkan_LoadLibrary().
|
|
*
|
|
* \since This function is available since SDL 3.1.3.
|
|
*
|
|
* \sa SDL_Vulkan_LoadLibrary
|
|
*/
|
|
extern SDL_DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
|
|
|
|
/**
|
|
* Get the Vulkan instance extensions needed for vkCreateInstance.
|
|
*
|
|
* This should be called after either calling SDL_Vulkan_LoadLibrary() or
|
|
* creating an SDL_Window with the `SDL_WINDOW_VULKAN` flag.
|
|
*
|
|
* On return, the variable pointed to by `count` will be set to the number of
|
|
* elements returned, suitable for using with
|
|
* VkInstanceCreateInfo::enabledExtensionCount, and the returned array can be
|
|
* used with VkInstanceCreateInfo::ppEnabledExtensionNames, for calling
|
|
* Vulkan's vkCreateInstance API.
|
|
*
|
|
* You should not free the returned array; it is owned by SDL.
|
|
*
|
|
* \param count a pointer filled in with the number of extensions returned.
|
|
* \returns an array of extension name strings on success, NULL on failure;
|
|
* call SDL_GetError() for more information.
|
|
*
|
|
* \since This function is available since SDL 3.1.3.
|
|
*
|
|
* \sa SDL_Vulkan_CreateSurface
|
|
*/
|
|
extern SDL_DECLSPEC char const * const * SDLCALL SDL_Vulkan_GetInstanceExtensions(Uint32 *count);
|
|
|
|
/**
|
|
* Create a Vulkan rendering surface for a window.
|
|
*
|
|
* The `window` must have been created with the `SDL_WINDOW_VULKAN` flag and
|
|
* `instance` must have been created with extensions returned by
|
|
* SDL_Vulkan_GetInstanceExtensions() enabled.
|
|
*
|
|
* If `allocator` is NULL, Vulkan will use the system default allocator. This
|
|
* argument is passed directly to Vulkan and isn't used by SDL itself.
|
|
*
|
|
* \param window the window to which to attach the Vulkan surface.
|
|
* \param instance the Vulkan instance handle.
|
|
* \param allocator a VkAllocationCallbacks struct, which lets the app set the
|
|
* allocator that creates the surface. Can be NULL.
|
|
* \param surface a pointer to a VkSurfaceKHR handle to output the newly
|
|
* created surface.
|
|
* \returns true on success or false on failure; call SDL_GetError() for more
|
|
* information.
|
|
*
|
|
* \since This function is available since SDL 3.1.3.
|
|
*
|
|
* \sa SDL_Vulkan_GetInstanceExtensions
|
|
* \sa SDL_Vulkan_DestroySurface
|
|
*/
|
|
extern SDL_DECLSPEC bool SDLCALL SDL_Vulkan_CreateSurface(SDL_Window *window,
|
|
VkInstance instance,
|
|
const struct VkAllocationCallbacks *allocator,
|
|
VkSurfaceKHR* surface);
|
|
|
|
/**
|
|
* Destroy the Vulkan rendering surface of a window.
|
|
*
|
|
* This should be called before SDL_DestroyWindow, if SDL_Vulkan_CreateSurface
|
|
* was called after SDL_CreateWindow.
|
|
*
|
|
* The `instance` must have been created with extensions returned by
|
|
* SDL_Vulkan_GetInstanceExtensions() enabled and `surface` must have been
|
|
* created successfully by an SDL_Vulkan_CreateSurface() call.
|
|
*
|
|
* If `allocator` is NULL, Vulkan will use the system default allocator. This
|
|
* argument is passed directly to Vulkan and isn't used by SDL itself.
|
|
*
|
|
* \param instance the Vulkan instance handle.
|
|
* \param surface vkSurfaceKHR handle to destroy.
|
|
* \param allocator a VkAllocationCallbacks struct, which lets the app set the
|
|
* allocator that destroys the surface. Can be NULL.
|
|
*
|
|
* \since This function is available since SDL 3.1.3.
|
|
*
|
|
* \sa SDL_Vulkan_GetInstanceExtensions
|
|
* \sa SDL_Vulkan_CreateSurface
|
|
*/
|
|
extern SDL_DECLSPEC void SDLCALL SDL_Vulkan_DestroySurface(VkInstance instance,
|
|
VkSurfaceKHR surface,
|
|
const struct VkAllocationCallbacks *allocator);
|
|
|
|
/**
|
|
* Query support for presentation via a given physical device and queue
|
|
* family.
|
|
*
|
|
* The `instance` must have been created with extensions returned by
|
|
* SDL_Vulkan_GetInstanceExtensions() enabled.
|
|
*
|
|
* \param instance the Vulkan instance handle.
|
|
* \param physicalDevice a valid Vulkan physical device handle.
|
|
* \param queueFamilyIndex a valid queue family index for the given physical
|
|
* device.
|
|
* \returns true if supported, false if unsupported or an error occurred.
|
|
*
|
|
* \since This function is available since SDL 3.1.3.
|
|
*
|
|
* \sa SDL_Vulkan_GetInstanceExtensions
|
|
*/
|
|
extern SDL_DECLSPEC bool SDLCALL SDL_Vulkan_GetPresentationSupport(VkInstance instance,
|
|
VkPhysicalDevice physicalDevice,
|
|
Uint32 queueFamilyIndex);
|
|
|
|
/* @} *//* Vulkan support functions */
|
|
|
|
/* Ends C function definitions when using C++ */
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#include <SDL3/SDL_close_code.h>
|
|
|
|
#endif /* SDL_vulkan_h_ */
|