src/video/SDL_egl_c.h
author Sam Lantinga <slouken@libsdl.org>
Sat, 04 Nov 2017 09:07:33 -0700
changeset 11677 aed6a9ff3c99
parent 11175 cbc6a8a5b701
child 11718 3006dd42e4db
permissions -rw-r--r--
Fixed bug 3940 - Add support for EGL_SURFACE_TYPE

tomwardio

Add support to be able to set EGL_SURFACE_TYPE bits when creating an EGL config. This is usefule when wanting to create pixel buffer surfaces in custom video drivers.
     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 *eglCreateWindowSurface) (EGLDisplay dpy,
    66                                          EGLConfig config,
    67                                          NativeWindowType window,
    68                                          const EGLint * attrib_list);
    69     EGLBoolean(EGLAPIENTRY *eglDestroySurface) (EGLDisplay dpy, EGLSurface surface);
    70     
    71     EGLBoolean(EGLAPIENTRY *eglMakeCurrent) (EGLDisplay dpy, EGLSurface draw,
    72                                  EGLSurface read, EGLContext ctx);
    73     
    74     EGLBoolean(EGLAPIENTRY *eglSwapBuffers) (EGLDisplay dpy, EGLSurface draw);
    75     
    76     EGLBoolean(EGLAPIENTRY *eglSwapInterval) (EGLDisplay dpy, EGLint interval);
    77     
    78     const char *(EGLAPIENTRY *eglQueryString) (EGLDisplay dpy, EGLint name);
    79     
    80     EGLBoolean(EGLAPIENTRY  *eglGetConfigAttrib) (EGLDisplay dpy, EGLConfig config,
    81                                      EGLint attribute, EGLint * value);
    82     
    83     EGLBoolean(EGLAPIENTRY *eglWaitNative) (EGLint  engine);
    84 
    85     EGLBoolean(EGLAPIENTRY *eglWaitGL)(void);
    86     
    87     EGLBoolean(EGLAPIENTRY *eglBindAPI)(EGLenum);
    88 
    89     EGLint(EGLAPIENTRY *eglGetError)(void);
    90 
    91 } SDL_EGL_VideoData;
    92 
    93 /* OpenGLES functions */
    94 extern int SDL_EGL_GetAttribute(_THIS, SDL_GLattr attrib, int *value);
    95 /* SDL_EGL_LoadLibrary can get a display for a specific platform (EGL_PLATFORM_*)
    96  * or, if 0 is passed, let the implementation decide.
    97  */
    98 extern int SDL_EGL_LoadLibrary(_THIS, const char *path, NativeDisplayType native_display, EGLenum platform);
    99 extern void *SDL_EGL_GetProcAddress(_THIS, const char *proc);
   100 extern void SDL_EGL_UnloadLibrary(_THIS);
   101 extern int SDL_EGL_ChooseConfig(_THIS);
   102 extern int SDL_EGL_SetSwapInterval(_THIS, int interval);
   103 extern int SDL_EGL_GetSwapInterval(_THIS);
   104 extern void SDL_EGL_DeleteContext(_THIS, SDL_GLContext context);
   105 extern EGLSurface *SDL_EGL_CreateSurface(_THIS, NativeWindowType nw);
   106 extern void SDL_EGL_DestroySurface(_THIS, EGLSurface egl_surface);
   107 
   108 /* These need to be wrapped to get the surface for the window by the platform GLES implementation */
   109 extern SDL_GLContext SDL_EGL_CreateContext(_THIS, EGLSurface egl_surface);
   110 extern int SDL_EGL_MakeCurrent(_THIS, EGLSurface egl_surface, SDL_GLContext context);
   111 extern int SDL_EGL_SwapBuffers(_THIS, EGLSurface egl_surface);
   112 
   113 /* SDL Error-reporting */
   114 extern int SDL_EGL_SetErrorEx(const char * message, const char * eglFunctionName, EGLint eglErrorCode);
   115 #define SDL_EGL_SetError(message, eglFunctionName) SDL_EGL_SetErrorEx(message, eglFunctionName, _this->egl_data->eglGetError())
   116 
   117 /* A few of useful macros */
   118 
   119 #define SDL_EGL_SwapWindow_impl(BACKEND) int \
   120 BACKEND ## _GLES_SwapWindow(_THIS, SDL_Window * window) \
   121 {\
   122     return SDL_EGL_SwapBuffers(_this, ((SDL_WindowData *) window->driverdata)->egl_surface);\
   123 }
   124 
   125 #define SDL_EGL_MakeCurrent_impl(BACKEND) int \
   126 BACKEND ## _GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context) \
   127 {\
   128     if (window && context) { \
   129         return SDL_EGL_MakeCurrent(_this, ((SDL_WindowData *) window->driverdata)->egl_surface, context); \
   130     }\
   131     else {\
   132         return SDL_EGL_MakeCurrent(_this, NULL, NULL);\
   133     }\
   134 }
   135 
   136 #define SDL_EGL_CreateContext_impl(BACKEND) SDL_GLContext \
   137 BACKEND ## _GLES_CreateContext(_THIS, SDL_Window * window) \
   138 {\
   139     return SDL_EGL_CreateContext(_this, ((SDL_WindowData *) window->driverdata)->egl_surface);\
   140 }
   141 
   142 #endif /* SDL_VIDEO_OPENGL_EGL */
   143 
   144 #endif /* SDL_egl_h_ */
   145 
   146 /* vi: set ts=4 sw=4 expandtab: */