117 lines
3.7 KiB
C
Executable file
117 lines
3.7 KiB
C
Executable file
/*
|
|
Simple DirectMedia Layer
|
|
Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
|
|
|
|
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_metal.h
|
|
*
|
|
* Header file for functions to creating Metal layers and views on SDL windows.
|
|
*/
|
|
|
|
#ifndef SDL_metal_h_
|
|
#define SDL_metal_h_
|
|
|
|
#include "SDL_video.h"
|
|
|
|
#include "begin_code.h"
|
|
/* Set up for C function definitions, even when using C++ */
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* \brief A handle to a CAMetalLayer-backed NSView (macOS) or UIView (iOS/tvOS).
|
|
*
|
|
* \note This can be cast directly to an NSView or UIView.
|
|
*/
|
|
typedef void *SDL_MetalView;
|
|
|
|
/**
|
|
* \name Metal support functions
|
|
*/
|
|
/* @{ */
|
|
|
|
/**
|
|
* \brief Create a CAMetalLayer-backed NSView/UIView and attach it to the
|
|
* specified window.
|
|
*
|
|
* On macOS, this does *not* associate a MTLDevice with the CAMetalLayer on its
|
|
* own. It is up to user code to do that.
|
|
*
|
|
* The returned handle can be casted directly to a NSView or UIView.
|
|
* To access the backing CAMetalLayer, call SDL_Metal_GetLayer().
|
|
*
|
|
* \note \a window must be created with the SDL_WINDOW_METAL flag.
|
|
*
|
|
* \sa SDL_Metal_DestroyView
|
|
* \sa SDL_Metal_GetLayer
|
|
*/
|
|
extern DECLSPEC SDL_MetalView SDLCALL SDL_Metal_CreateView(SDL_Window * window);
|
|
|
|
/**
|
|
* \brief Destroy an existing SDL_MetalView object.
|
|
*
|
|
* This should be called before SDL_DestroyWindow, if SDL_Metal_CreateView was
|
|
* called after SDL_CreateWindow.
|
|
*
|
|
* \sa SDL_Metal_CreateView
|
|
*/
|
|
extern DECLSPEC void SDLCALL SDL_Metal_DestroyView(SDL_MetalView view);
|
|
|
|
/**
|
|
* \brief Get a pointer to the backing CAMetalLayer for the given view.
|
|
*
|
|
* \sa SDL_MetalCreateView
|
|
*/
|
|
extern DECLSPEC void *SDLCALL SDL_Metal_GetLayer(SDL_MetalView view);
|
|
|
|
/**
|
|
* \brief Get the size of a window's underlying drawable in pixels (for use
|
|
* with setting viewport, scissor & etc).
|
|
*
|
|
* \param window SDL_Window from which the drawable size should be queried
|
|
* \param w Pointer to variable for storing the width in pixels,
|
|
* may be NULL
|
|
* \param h Pointer to variable for storing the height in pixels,
|
|
* may be NULL
|
|
*
|
|
* 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 \c SDL_HINT_VIDEO_HIGHDPI_DISABLED hint.
|
|
*
|
|
* \note On macOS high-DPI support must be enabled for an application by
|
|
* setting NSHighResolutionCapable to true in its Info.plist.
|
|
*
|
|
* \sa SDL_GetWindowSize()
|
|
* \sa SDL_CreateWindow()
|
|
*/
|
|
extern DECLSPEC void SDLCALL SDL_Metal_GetDrawableSize(SDL_Window* window, int *w,
|
|
int *h);
|
|
|
|
/* @} *//* Metal support functions */
|
|
|
|
/* Ends C function definitions when using C++ */
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#include "close_code.h"
|
|
|
|
#endif /* SDL_metal_h_ */
|