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      1 /**************************************************************************
      2  *
      3  * Copyright 2010 LunarG, Inc.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     24  * DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28 
     29 #include <string.h>
     30 #include "egltypedefs.h"
     31 #include "egldriver.h"
     32 #include "eglconfig.h"
     33 #include "eglcontext.h"
     34 #include "eglsurface.h"
     35 #include "eglmisc.h"
     36 #include "eglscreen.h"
     37 #include "eglmode.h"
     38 #include "eglsync.h"
     39 
     40 
     41 static EGLBoolean
     42 _eglReturnFalse(void)
     43 {
     44    return EGL_FALSE;
     45 }
     46 
     47 
     48 /**
     49  * Plug all the available fallback routines into the given driver's
     50  * dispatch table.
     51  */
     52 void
     53 _eglInitDriverFallbacks(_EGLDriver *drv)
     54 {
     55    memset(&drv->API, 0, sizeof(drv->API));
     56 
     57    /* the driver has to implement these */
     58    drv->API.Initialize = NULL;
     59    drv->API.Terminate = NULL;
     60 
     61    drv->API.GetConfigs = _eglGetConfigs;
     62    drv->API.ChooseConfig = _eglChooseConfig;
     63    drv->API.GetConfigAttrib = _eglGetConfigAttrib;
     64 
     65    drv->API.CreateContext = (CreateContext_t) _eglReturnFalse;
     66    drv->API.DestroyContext = (DestroyContext_t) _eglReturnFalse;
     67    drv->API.MakeCurrent = (MakeCurrent_t) _eglReturnFalse;
     68    drv->API.QueryContext = _eglQueryContext;
     69 
     70    drv->API.CreateWindowSurface = (CreateWindowSurface_t) _eglReturnFalse;
     71    drv->API.CreatePixmapSurface = (CreatePixmapSurface_t) _eglReturnFalse;
     72    drv->API.CreatePbufferSurface = (CreatePbufferSurface_t) _eglReturnFalse;
     73    drv->API.CreatePbufferFromClientBuffer =
     74       (CreatePbufferFromClientBuffer_t) _eglReturnFalse;
     75    drv->API.DestroySurface = (DestroySurface_t) _eglReturnFalse;
     76    drv->API.QuerySurface = _eglQuerySurface;
     77    drv->API.SurfaceAttrib = _eglSurfaceAttrib;
     78 
     79    drv->API.BindTexImage = (BindTexImage_t) _eglReturnFalse;
     80    drv->API.ReleaseTexImage = (ReleaseTexImage_t) _eglReturnFalse;
     81    drv->API.CopyBuffers = (CopyBuffers_t) _eglReturnFalse;
     82    drv->API.SwapBuffers = (SwapBuffers_t) _eglReturnFalse;
     83    drv->API.SwapInterval = _eglSwapInterval;
     84 
     85    drv->API.WaitClient = (WaitClient_t) _eglReturnFalse;
     86    drv->API.WaitNative = (WaitNative_t) _eglReturnFalse;
     87    drv->API.GetProcAddress = (GetProcAddress_t) _eglReturnFalse;
     88    drv->API.QueryString = _eglQueryString;
     89 
     90 #ifdef EGL_MESA_screen_surface
     91    drv->API.CopyContextMESA = (CopyContextMESA_t) _eglReturnFalse;
     92    drv->API.CreateScreenSurfaceMESA =
     93       (CreateScreenSurfaceMESA_t) _eglReturnFalse;
     94    drv->API.ShowScreenSurfaceMESA = (ShowScreenSurfaceMESA_t) _eglReturnFalse;
     95    drv->API.ChooseModeMESA = _eglChooseModeMESA;
     96    drv->API.GetModesMESA = _eglGetModesMESA;
     97    drv->API.GetModeAttribMESA = _eglGetModeAttribMESA;
     98    drv->API.GetScreensMESA = _eglGetScreensMESA;
     99    drv->API.ScreenPositionMESA = _eglScreenPositionMESA;
    100    drv->API.QueryScreenMESA = _eglQueryScreenMESA;
    101    drv->API.QueryScreenSurfaceMESA = _eglQueryScreenSurfaceMESA;
    102    drv->API.QueryScreenModeMESA = _eglQueryScreenModeMESA;
    103    drv->API.QueryModeStringMESA = _eglQueryModeStringMESA;
    104 #endif /* EGL_MESA_screen_surface */
    105 
    106    drv->API.CreateImageKHR = NULL;
    107    drv->API.DestroyImageKHR = NULL;
    108 
    109    drv->API.CreateSyncKHR = NULL;
    110    drv->API.DestroySyncKHR = NULL;
    111    drv->API.ClientWaitSyncKHR = NULL;
    112    drv->API.SignalSyncKHR = NULL;
    113    drv->API.GetSyncAttribKHR = _eglGetSyncAttribKHR;
    114 
    115 #ifdef EGL_MESA_drm_image
    116    drv->API.CreateDRMImageMESA = NULL;
    117    drv->API.ExportDRMImageMESA = NULL;
    118 #endif
    119 
    120 #ifdef EGL_NOK_swap_region
    121    drv->API.SwapBuffersRegionNOK = NULL;
    122 #endif
    123 }
    124