--- /dev/null
+/*
+ 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_ */
projects / xonotic / darkplaces.git / blobdiff