src/video/SDL_egl_c.h
author Sam Lantinga <slouken@libsdl.org>
Thu, 07 Dec 2017 16:08:47 -0800
changeset 11731 30f337dc8c74
parent 11719 a4477243eb20
child 11811 5d94cb6b24d3
permissions -rw-r--r--
Added iOS and OSX versions of the Metal shaders
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "../SDL_internal.h"
    22 
    23 #ifndef SDL_egl_h_
    24 #define SDL_egl_h_
    25 
    26 #if SDL_VIDEO_OPENGL_EGL
    27 
    28 #include "SDL_egl.h"
    29 
    30 #include "SDL_sysvideo.h"
    31 
    32 typedef struct SDL_EGL_VideoData
    33 {
    34     void *egl_dll_handle, *dll_handle;
    35     EGLDisplay egl_display;
    36     EGLConfig egl_config;
    37     int egl_swapinterval;
    38     int egl_surfacetype;
    39     
    40     EGLDisplay(EGLAPIENTRY *eglGetDisplay) (NativeDisplayType display);
    41     EGLDisplay(EGLAPIENTRY *eglGetPlatformDisplay) (EGLenum platform,
    42                                 void *native_display,
    43                                 const EGLint *attrib_list);
    44     EGLDisplay(EGLAPIENTRY *eglGetPlatformDisplayEXT) (EGLenum platform,
    45                                 void *native_display,
    46                                 const EGLint *attrib_list);
    47     EGLBoolean(EGLAPIENTRY *eglInitialize) (EGLDisplay dpy, EGLint * major,
    48                                 EGLint * minor);
    49     EGLBoolean(EGLAPIENTRY  *eglTerminate) (EGLDisplay dpy);
    50     
    51     void *(EGLAPIENTRY *eglGetProcAddress) (const char * procName);
    52     
    53     EGLBoolean(EGLAPIENTRY *eglChooseConfig) (EGLDisplay dpy,
    54                                   const EGLint * attrib_list,
    55                                   EGLConfig * configs,
    56                                   EGLint config_size, EGLint * num_config);
    57     
    58     EGLContext(EGLAPIENTRY *eglCreateContext) (EGLDisplay dpy,
    59                                    EGLConfig config,
    60                                    EGLContext share_list,
    61                                    const EGLint * attrib_list);
    62     
    63     EGLBoolean(EGLAPIENTRY *eglDestroyContext) (EGLDisplay dpy, EGLContext ctx);
    64     
    65     EGLSurface(EGLAPIENTRY *eglCreatePbufferSurface)(EGLDisplay dpy, EGLConfig config,
    66                                                      EGLint const* attrib_list);
    67 
    68     EGLSurface(EGLAPIENTRY *eglCreateWindowSurface) (EGLDisplay dpy,
    69                                          EGLConfig config,
    70                                          NativeWindowType window,
    71                                          const EGLint * attrib_list);
    72     EGLBoolean(EGLAPIENTRY *eglDestroySurface) (EGLDisplay dpy, EGLSurface surface);
    73     
    74     EGLBoolean(EGLAPIENTRY *eglMakeCurrent) (EGLDisplay dpy, EGLSurface draw,
    75                                  EGLSurface read, EGLContext ctx);
    76     
    77     EGLBoolean(EGLAPIENTRY *eglSwapBuffers) (EGLDisplay dpy, EGLSurface draw);
    78     
    79     EGLBoolean(EGLAPIENTRY *eglSwapInterval) (EGLDisplay dpy, EGLint interval);
    80     
    81     const char *(EGLAPIENTRY *eglQueryString) (EGLDisplay dpy, EGLint name);
    82     
    83     EGLBoolean(EGLAPIENTRY  *eglGetConfigAttrib) (EGLDisplay dpy, EGLConfig config,
    84                                      EGLint attribute, EGLint * value);
    85     
    86     EGLBoolean(EGLAPIENTRY *eglWaitNative) (EGLint  engine);
    87 
    88     EGLBoolean(EGLAPIENTRY *eglWaitGL)(void);
    89     
    90     EGLBoolean(EGLAPIENTRY *eglBindAPI)(EGLenum);
    91 
    92     EGLint(EGLAPIENTRY *eglGetError)(void);
    93 
    94 } SDL_EGL_VideoData;
    95 
    96 /* OpenGLES functions */
    97 extern int SDL_EGL_GetAttribute(_THIS, SDL_GLattr attrib, int *value);
    98 /* SDL_EGL_LoadLibrary can get a display for a specific platform (EGL_PLATFORM_*)
    99  * or, if 0 is passed, let the implementation decide.
   100  */
   101 extern int SDL_EGL_LoadLibrary(_THIS, const char *path, NativeDisplayType native_display, EGLenum platform);
   102 extern void *SDL_EGL_GetProcAddress(_THIS, const char *proc);
   103 extern void SDL_EGL_UnloadLibrary(_THIS);
   104 extern int SDL_EGL_ChooseConfig(_THIS);
   105 extern int SDL_EGL_SetSwapInterval(_THIS, int interval);
   106 extern int SDL_EGL_GetSwapInterval(_THIS);
   107 extern void SDL_EGL_DeleteContext(_THIS, SDL_GLContext context);
   108 extern EGLSurface *SDL_EGL_CreateSurface(_THIS, NativeWindowType nw);
   109 extern void SDL_EGL_DestroySurface(_THIS, EGLSurface egl_surface);
   110 
   111 /* These need to be wrapped to get the surface for the window by the platform GLES implementation */
   112 extern SDL_GLContext SDL_EGL_CreateContext(_THIS, EGLSurface egl_surface);
   113 extern int SDL_EGL_MakeCurrent(_THIS, EGLSurface egl_surface, SDL_GLContext context);
   114 extern int SDL_EGL_SwapBuffers(_THIS, EGLSurface egl_surface);
   115 
   116 /* SDL Error-reporting */
   117 extern int SDL_EGL_SetErrorEx(const char * message, const char * eglFunctionName, EGLint eglErrorCode);
   118 #define SDL_EGL_SetError(message, eglFunctionName) SDL_EGL_SetErrorEx(message, eglFunctionName, _this->egl_data->eglGetError())
   119 
   120 /* A few of useful macros */
   121 
   122 #define SDL_EGL_SwapWindow_impl(BACKEND) int \
   123 BACKEND ## _GLES_SwapWindow(_THIS, SDL_Window * window) \
   124 {\
   125     return SDL_EGL_SwapBuffers(_this, ((SDL_WindowData *) window->driverdata)->egl_surface);\
   126 }
   127 
   128 #define SDL_EGL_MakeCurrent_impl(BACKEND) int \
   129 BACKEND ## _GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context) \
   130 {\
   131     if (window && context) { \
   132         return SDL_EGL_MakeCurrent(_this, ((SDL_WindowData *) window->driverdata)->egl_surface, context); \
   133     }\
   134     else {\
   135         return SDL_EGL_MakeCurrent(_this, NULL, NULL);\
   136     }\
   137 }
   138 
   139 #define SDL_EGL_CreateContext_impl(BACKEND) SDL_GLContext \
   140 BACKEND ## _GLES_CreateContext(_THIS, SDL_Window * window) \
   141 {\
   142     return SDL_EGL_CreateContext(_this, ((SDL_WindowData *) window->driverdata)->egl_surface);\
   143 }
   144 
   145 #endif /* SDL_VIDEO_OPENGL_EGL */
   146 
   147 #endif /* SDL_egl_h_ */
   148 
   149 /* vi: set ts=4 sw=4 expandtab: */