mirror of https://github.com/encounter/SDL.git
216 lines
8.3 KiB
C
216 lines
8.3 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.
|
|
*/
|
|
|
|
/**
|
|
* \file SDL_vulkan.h
|
|
*
|
|
* Header file for functions to creating Vulkan surfaces on SDL windows.
|
|
*/
|
|
|
|
#ifndef SDL_vulkan_h_
|
|
#define SDL_vulkan_h_
|
|
|
|
#include "SDL_video.h"
|
|
|
|
#include "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_NON_DISPATCHABLE_HANDLE(VkSurfaceKHR)
|
|
|
|
#endif /* !NO_SDL_VULKAN_TYPEDEFS */
|
|
|
|
typedef VkInstance SDL_vulkanInstance;
|
|
typedef VkSurfaceKHR SDL_vulkanSurface; /* for compatibility with Tizen */
|
|
|
|
/**
|
|
* \name Vulkan support functions
|
|
*
|
|
* \note SDL_Vulkan_GetInstanceExtensions & SDL_Vulkan_CreateSurface API
|
|
* is compatable with Tizen's implementation of Vulkan in SDL.
|
|
*/
|
|
/* @{ */
|
|
|
|
/**
|
|
* 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 0 on success or -1 if the library couldn't be loaded; call
|
|
* SDL_GetError() for more information.
|
|
*
|
|
* \since This function is available since SDL 2.0.6.
|
|
*
|
|
* \sa SDL_Vulkan_GetVkInstanceProcAddr
|
|
* \sa SDL_Vulkan_UnloadLibrary
|
|
*/
|
|
extern DECLSPEC int 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.
|
|
*
|
|
* \returns the function pointer for `vkGetInstanceProcAddr` or NULL on error.
|
|
*
|
|
* \since This function is available since SDL 2.0.6.
|
|
*/
|
|
extern DECLSPEC void *SDLCALL SDL_Vulkan_GetVkGetInstanceProcAddr(void);
|
|
|
|
/**
|
|
* Unload the Vulkan library previously loaded by SDL_Vulkan_LoadLibrary()
|
|
*
|
|
* \since This function is available since SDL 2.0.6.
|
|
*
|
|
* \sa SDL_Vulkan_LoadLibrary
|
|
*/
|
|
extern DECLSPEC void SDLCALL SDL_Vulkan_UnloadLibrary(void);
|
|
|
|
/**
|
|
* Get the names of the Vulkan instance extensions needed to create a surface
|
|
* with SDL_Vulkan_CreateSurface.
|
|
*
|
|
* If `pNames` is NULL, then the number of required Vulkan instance extensions
|
|
* is returned in `pCount`. Otherwise, `pCount` must point to a variable set
|
|
* to the number of elements in the `pNames` array, and on return the variable
|
|
* is overwritten with the number of names actually written to `pNames`. If
|
|
* `pCount` is less than the number of required extensions, at most `pCount`
|
|
* structures will be written. If `pCount` is smaller than the number of
|
|
* required extensions, SDL_FALSE will be returned instead of SDL_TRUE, to
|
|
* indicate that not all the required extensions were returned.
|
|
*
|
|
* The `window` parameter is currently needed to be valid as of SDL 2.0.8,
|
|
* however, this parameter will likely be removed in future releases
|
|
*
|
|
* \param window A window for which the required Vulkan instance extensions
|
|
* should be retrieved (will be deprecated in a future release)
|
|
* \param pCount A pointer to an unsigned int corresponding to the number of
|
|
* extensions to be returned
|
|
* \param pNames NULL or a pointer to an array to be filled with required
|
|
* Vulkan instance extensions
|
|
* \returns SDL_TRUE on success, SDL_FALSE on error.
|
|
*
|
|
* \since This function is available since SDL 2.0.6.
|
|
*
|
|
* \sa SDL_Vulkan_CreateSurface
|
|
*/
|
|
extern DECLSPEC SDL_bool SDLCALL SDL_Vulkan_GetInstanceExtensions(SDL_Window *window,
|
|
unsigned int *pCount,
|
|
const char **pNames);
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* \param window The window to which to attach the Vulkan surface
|
|
* \param instance The Vulkan instance handle
|
|
* \param surface A pointer to a VkSurfaceKHR handle to output the newly
|
|
* created surface
|
|
* \returns SDL_TRUE on success, SDL_FALSE on error.
|
|
*
|
|
* \since This function is available since SDL 2.0.6.
|
|
*
|
|
* \sa SDL_Vulkan_GetInstanceExtensions
|
|
* \sa SDL_Vulkan_GetDrawableSize
|
|
*/
|
|
extern DECLSPEC SDL_bool SDLCALL SDL_Vulkan_CreateSurface(SDL_Window *window,
|
|
VkInstance instance,
|
|
VkSurfaceKHR* surface);
|
|
|
|
/**
|
|
* Get the size of the window's underlying drawable dimensions in pixels.
|
|
*
|
|
* This may differ from SDL_GetWindowSize() if we're rendering to a high-DPI
|
|
* drawable, i.e. the window was created with `SDL_WINDOW_ALLOW_HIGHDPI` on a
|
|
* platform with high-DPI support (Apple calls this "Retina"), and not
|
|
* disabled by the `SDL_HINT_VIDEO_HIGHDPI_DISABLED` hint.
|
|
*
|
|
* \param window an SDL_Window for which the size is to be queried
|
|
* \param w Pointer to the variable to write the width to or NULL
|
|
* \param h Pointer to the variable to write the height to or NULL
|
|
*
|
|
* \since This function is available since SDL 2.0.6.
|
|
*
|
|
* \sa SDL_GetWindowSize
|
|
* \sa SDL_CreateWindow
|
|
* \sa SDL_Vulkan_CreateSurface
|
|
*/
|
|
extern DECLSPEC void SDLCALL SDL_Vulkan_GetDrawableSize(SDL_Window * window,
|
|
int *w, int *h);
|
|
|
|
/* @} *//* Vulkan support functions */
|
|
|
|
/* Ends C function definitions when using C++ */
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#include "close_code.h"
|
|
|
|
#endif /* SDL_vulkan_h_ */
|