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/**************************************************************************

 *

 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.

 * Copyright 2009-2010 Chia-I Wu 

 * Copyright 2010-2011 LunarG, Inc.

 * All Rights Reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the

 * "Software"), to deal in the Software without restriction, including

 * without limitation the rights to use, copy, modify, merge, publish,

 * distribute, sub license, and/or sell copies of the Software, and to

 * permit persons to whom the Software is furnished to do so, subject to

 * the following conditions:

 *

 * The above copyright notice and this permission notice (including the

 * next paragraph) shall be included in all copies or substantial portions

 * of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

 * DEALINGS IN THE SOFTWARE.

 *

 **************************************************************************/

/**

 * Public EGL API entrypoints

 *

 * Generally, we use the EGLDisplay parameter as a key to lookup the

 * appropriate device driver handle, then jump though the driver's

 * dispatch table to handle the function.

 *

 * That allows us the option of supporting multiple, simultaneous,

 * heterogeneous hardware devices in the future.

 *

 * The EGLDisplay, EGLConfig, EGLContext and EGLSurface types are

 * opaque handles. Internal objects are linked to a display to

 * create the handles.

 *

 * For each public API entry point, the opaque handles are looked up

 * before being dispatched to the drivers.  When it fails to look up

 * a handle, one of

 *

 * EGL_BAD_DISPLAY

 * EGL_BAD_CONFIG

 * EGL_BAD_CONTEXT

 * EGL_BAD_SURFACE

 * EGL_BAD_SCREEN_MESA

 * EGL_BAD_MODE_MESA

 *

 * is generated and the driver function is not called. An

 * uninitialized EGLDisplay has no driver associated with it. When

 * such display is detected,

 *

 * EGL_NOT_INITIALIZED

 *

 * is generated.

 *

 * Some of the entry points use current display, context, or surface

 * implicitly.  For such entry points, the implicit objects are also

 * checked before calling the driver function.  Other than the

 * errors listed above,

 *

 * EGL_BAD_CURRENT_SURFACE

 *

 * may also be generated.

 *

 * Notes on naming conventions:

 *

 * eglFooBar    - public EGL function

 * EGL_FOO_BAR  - public EGL token

 * EGLDatatype  - public EGL datatype

 *

 * _eglFooBar   - private EGL function

 * _EGLDatatype - private EGL datatype, typedef'd struct

 * _egl_struct  - private EGL struct, non-typedef'd

 *

 */

#include 

#include 

#include 

#include "eglcontext.h"

#include "egldisplay.h"

#include "egltypedefs.h"

#include "eglcurrent.h"

#include "egldriver.h"

#include "eglsurface.h"

#include "eglconfig.h"

#include "eglscreen.h"

#include "eglmode.h"

#include "eglimage.h"

#include "eglsync.h"

/**

 * Macros to help return an API entrypoint.

 *

 * These macros will unlock the display and record the error code.

 */

#define RETURN_EGL_ERROR(disp, err, ret)        \

   do {                                         \

      if (disp)                                 \

         _eglUnlockDisplay(disp);               \

      /* EGL error codes are non-zero */        \

      if (err)                                  \

         _eglError(err, __FUNCTION__);          \

      return ret;                               \

   } while (0)

#define RETURN_EGL_SUCCESS(disp, ret) \

   RETURN_EGL_ERROR(disp, EGL_SUCCESS, ret)

/* record EGL_SUCCESS only when ret evaluates to true */

#define RETURN_EGL_EVAL(disp, ret) \

   RETURN_EGL_ERROR(disp, (ret) ? EGL_SUCCESS : 0, ret)

/*

 * A bunch of macros and checks to simplify error checking.

 */

#define _EGL_CHECK_DISPLAY(disp, ret, drv)         \

   do {                                            \

      drv = _eglCheckDisplay(disp, __FUNCTION__);  \

      if (!drv)                                    \

         RETURN_EGL_ERROR(disp, 0, ret);           \

   } while (0)

#define _EGL_CHECK_OBJECT(disp, type, obj, ret, drv)      \

   do {                                                   \

      drv = _eglCheck ## type(disp, obj, __FUNCTION__);   \

      if (!drv)                                           \

         RETURN_EGL_ERROR(disp, 0, ret);                  \

   } while (0)

#define _EGL_CHECK_SURFACE(disp, surf, ret, drv) \

   _EGL_CHECK_OBJECT(disp, Surface, surf, ret, drv)

#define _EGL_CHECK_CONTEXT(disp, context, ret, drv) \

   _EGL_CHECK_OBJECT(disp, Context, context, ret, drv)

#define _EGL_CHECK_CONFIG(disp, conf, ret, drv) \

   _EGL_CHECK_OBJECT(disp, Config, conf, ret, drv)

#define _EGL_CHECK_SCREEN(disp, scrn, ret, drv) \

   _EGL_CHECK_OBJECT(disp, Screen, scrn, ret, drv)

#define _EGL_CHECK_MODE(disp, m, ret, drv) \

   _EGL_CHECK_OBJECT(disp, Mode, m, ret, drv)

#define _EGL_CHECK_SYNC(disp, s, ret, drv) \

   _EGL_CHECK_OBJECT(disp, Sync, s, ret, drv)

static INLINE _EGLDriver *

_eglCheckDisplay(_EGLDisplay *disp, const char *msg)

{

   if (!disp) {

      _eglError(EGL_BAD_DISPLAY, msg);

      return NULL;

   }

   if (!disp->Initialized) {

      _eglError(EGL_NOT_INITIALIZED, msg);

      return NULL;

   }

   return disp->Driver;

}

static INLINE _EGLDriver *

_eglCheckSurface(_EGLDisplay *disp, _EGLSurface *surf, const char *msg)

{

   _EGLDriver *drv = _eglCheckDisplay(disp, msg);

   if (!drv)

      return NULL;

   if (!surf) {

      _eglError(EGL_BAD_SURFACE, msg);

      return NULL;

   }

   return drv;

}

static INLINE _EGLDriver *

_eglCheckContext(_EGLDisplay *disp, _EGLContext *context, const char *msg)

{

   _EGLDriver *drv = _eglCheckDisplay(disp, msg);

   if (!drv)

      return NULL;

   if (!context) {

      _eglError(EGL_BAD_CONTEXT, msg);

      return NULL;

   }

   return drv;

}

static INLINE _EGLDriver *

_eglCheckConfig(_EGLDisplay *disp, _EGLConfig *conf, const char *msg)

{

   _EGLDriver *drv = _eglCheckDisplay(disp, msg);

   if (!drv)

      return NULL;

   if (!conf) {

      _eglError(EGL_BAD_CONFIG, msg);

      return NULL;

   }

   return drv;

}

static INLINE _EGLDriver *

_eglCheckSync(_EGLDisplay *disp, _EGLSync *s, const char *msg)

{

   _EGLDriver *drv = _eglCheckDisplay(disp, msg);

   if (!drv)

      return NULL;

   if (!s) {

      _eglError(EGL_BAD_PARAMETER, msg);

      return NULL;

   }

   return drv;

}

#ifdef EGL_MESA_screen_surface

static INLINE _EGLDriver *

_eglCheckScreen(_EGLDisplay *disp, _EGLScreen *scrn, const char *msg)

{

   _EGLDriver *drv = _eglCheckDisplay(disp, msg);

   if (!drv)

      return NULL;

   if (!scrn) {

      _eglError(EGL_BAD_SCREEN_MESA, msg);

      return NULL;

   }

   return drv;

}

static INLINE _EGLDriver *

_eglCheckMode(_EGLDisplay *disp, _EGLMode *m, const char *msg)

{

   _EGLDriver *drv = _eglCheckDisplay(disp, msg);

   if (!drv)

      return NULL;

   if (!m) {

      _eglError(EGL_BAD_MODE_MESA, msg);

      return NULL;

   }

   return drv;

}

#endif /* EGL_MESA_screen_surface */

/**

 * Lookup and lock a display.

 */

static INLINE _EGLDisplay *

_eglLockDisplay(EGLDisplay display)

{

   _EGLDisplay *dpy = _eglLookupDisplay(display);

   if (dpy)

      _eglLockMutex(&dpy->Mutex);

   return dpy;

}

/**

 * Unlock a display.

 */

static INLINE void

_eglUnlockDisplay(_EGLDisplay *dpy)

{

   _eglUnlockMutex(&dpy->Mutex);

}

/**

 * This is typically the first EGL function that an application calls.

 * It associates a private _EGLDisplay object to the native display.

 */

EGLDisplay EGLAPIENTRY

eglGetDisplay(EGLNativeDisplayType nativeDisplay)

{

   _EGLPlatformType plat = _eglGetNativePlatform(nativeDisplay);

   _EGLDisplay *dpy = _eglFindDisplay(plat, (void *) nativeDisplay);

   return _eglGetDisplayHandle(dpy);

}

/**

 * This is typically the second EGL function that an application calls.

 * Here we load/initialize the actual hardware driver.

 */

EGLBoolean EGLAPIENTRY

eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   if (!disp)

      RETURN_EGL_ERROR(NULL, EGL_BAD_DISPLAY, EGL_FALSE);

   if (!disp->Initialized) {

      if (!_eglMatchDriver(disp, EGL_FALSE))

         RETURN_EGL_ERROR(disp, EGL_NOT_INITIALIZED, EGL_FALSE);

      /* limit to APIs supported by core */

      disp->ClientAPIs &= _EGL_API_ALL_BITS;

   }

   /* Update applications version of major and minor if not NULL */

   if ((major != NULL) && (minor != NULL)) {

      *major = disp->VersionMajor;

      *minor = disp->VersionMinor;

   }

   RETURN_EGL_SUCCESS(disp, EGL_TRUE);

}

EGLBoolean EGLAPIENTRY

eglTerminate(EGLDisplay dpy)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   if (!disp)

      RETURN_EGL_ERROR(NULL, EGL_BAD_DISPLAY, EGL_FALSE);

   if (disp->Initialized) {

      _EGLDriver *drv = disp->Driver;

      drv->API.Terminate(drv, disp);

      /* do not reset disp->Driver */

      disp->Initialized = EGL_FALSE;

   }

   RETURN_EGL_SUCCESS(disp, EGL_TRUE);

}

const char * EGLAPIENTRY

eglQueryString(EGLDisplay dpy, EGLint name)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLDriver *drv;

   const char *ret;

   _EGL_CHECK_DISPLAY(disp, NULL, drv);

   ret = drv->API.QueryString(drv, disp, name);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglGetConfigs(EGLDisplay dpy, EGLConfig *configs,

              EGLint config_size, EGLint *num_config)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_DISPLAY(disp, EGL_FALSE, drv);

   ret = drv->API.GetConfigs(drv, disp, configs, config_size, num_config);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglChooseConfig(EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *configs,

                EGLint config_size, EGLint *num_config)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_DISPLAY(disp, EGL_FALSE, drv);

   ret = drv->API.ChooseConfig(drv, disp, attrib_list, configs,

                                config_size, num_config);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,

                   EGLint attribute, EGLint *value)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLConfig *conf = _eglLookupConfig(config, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_CONFIG(disp, conf, EGL_FALSE, drv);

   ret = drv->API.GetConfigAttrib(drv, disp, conf, attribute, value);

   RETURN_EGL_EVAL(disp, ret);

}

EGLContext EGLAPIENTRY

eglCreateContext(EGLDisplay dpy, EGLConfig config, EGLContext share_list,

                 const EGLint *attrib_list)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLConfig *conf = _eglLookupConfig(config, disp);

   _EGLContext *share = _eglLookupContext(share_list, disp);

   _EGLDriver *drv;

   _EGLContext *context;

   EGLContext ret;

   _EGL_CHECK_DISPLAY(disp, EGL_NO_CONTEXT, drv);

   if (!config) {

      /* config may be NULL if surfaceless */

      if (!disp->Extensions.KHR_surfaceless_context)

         RETURN_EGL_ERROR(disp, EGL_BAD_CONFIG, EGL_NO_CONTEXT);

   }

   if (!share && share_list != EGL_NO_CONTEXT)

      RETURN_EGL_ERROR(disp, EGL_BAD_CONTEXT, EGL_NO_CONTEXT);

   context = drv->API.CreateContext(drv, disp, conf, share, attrib_list);

   ret = (context) ? _eglLinkContext(context) : EGL_NO_CONTEXT;

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglDestroyContext(EGLDisplay dpy, EGLContext ctx)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLContext *context = _eglLookupContext(ctx, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_CONTEXT(disp, context, EGL_FALSE, drv);

   _eglUnlinkContext(context);

   ret = drv->API.DestroyContext(drv, disp, context);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglMakeCurrent(EGLDisplay dpy, EGLSurface draw, EGLSurface read,

               EGLContext ctx)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLContext *context = _eglLookupContext(ctx, disp);

   _EGLSurface *draw_surf = _eglLookupSurface(draw, disp);

   _EGLSurface *read_surf = _eglLookupSurface(read, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   if (!disp)

      RETURN_EGL_ERROR(disp, EGL_BAD_DISPLAY, EGL_FALSE);

   drv = disp->Driver;

   /* display is allowed to be uninitialized under certain condition */

   if (!disp->Initialized) {

      if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE ||

          ctx != EGL_NO_CONTEXT)

         RETURN_EGL_ERROR(disp, EGL_BAD_DISPLAY, EGL_FALSE);

   }

   if (!drv)

      RETURN_EGL_SUCCESS(disp, EGL_TRUE);

   if (!context && ctx != EGL_NO_CONTEXT)

      RETURN_EGL_ERROR(disp, EGL_BAD_CONTEXT, EGL_FALSE);

   if (!draw_surf || !read_surf) {

      /* surfaces may be NULL if surfaceless */

      if (!disp->Extensions.KHR_surfaceless_context)

         RETURN_EGL_ERROR(disp, EGL_BAD_SURFACE, EGL_FALSE);

      if ((!draw_surf && draw != EGL_NO_SURFACE) ||

          (!read_surf && read != EGL_NO_SURFACE))

         RETURN_EGL_ERROR(disp, EGL_BAD_SURFACE, EGL_FALSE);

      if (draw_surf || read_surf)

         RETURN_EGL_ERROR(disp, EGL_BAD_MATCH, EGL_FALSE);

   }

   ret = drv->API.MakeCurrent(drv, disp, draw_surf, read_surf, context);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglQueryContext(EGLDisplay dpy, EGLContext ctx,

                EGLint attribute, EGLint *value)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLContext *context = _eglLookupContext(ctx, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_CONTEXT(disp, context, EGL_FALSE, drv);

   ret = drv->API.QueryContext(drv, disp, context, attribute, value);

   RETURN_EGL_EVAL(disp, ret);

}

EGLSurface EGLAPIENTRY

eglCreateWindowSurface(EGLDisplay dpy, EGLConfig config,

                       EGLNativeWindowType window, const EGLint *attrib_list)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLConfig *conf = _eglLookupConfig(config, disp);

   _EGLDriver *drv;

   _EGLSurface *surf;

   EGLSurface ret;

   _EGL_CHECK_CONFIG(disp, conf, EGL_NO_SURFACE, drv);

   if (disp->Platform != _eglGetNativePlatform(disp->PlatformDisplay))

      RETURN_EGL_ERROR(disp, EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);

   surf = drv->API.CreateWindowSurface(drv, disp, conf, window, attrib_list);

   ret = (surf) ? _eglLinkSurface(surf) : EGL_NO_SURFACE;

   RETURN_EGL_EVAL(disp, ret);

}

EGLSurface EGLAPIENTRY

eglCreatePixmapSurface(EGLDisplay dpy, EGLConfig config,

                       EGLNativePixmapType pixmap, const EGLint *attrib_list)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLConfig *conf = _eglLookupConfig(config, disp);

   _EGLDriver *drv;

   _EGLSurface *surf;

   EGLSurface ret;

   _EGL_CHECK_CONFIG(disp, conf, EGL_NO_SURFACE, drv);

   if (disp->Platform != _eglGetNativePlatform(disp->PlatformDisplay))

      RETURN_EGL_ERROR(disp, EGL_BAD_NATIVE_PIXMAP, EGL_NO_SURFACE);

   surf = drv->API.CreatePixmapSurface(drv, disp, conf, pixmap, attrib_list);

   ret = (surf) ? _eglLinkSurface(surf) : EGL_NO_SURFACE;

   RETURN_EGL_EVAL(disp, ret);

}

EGLSurface EGLAPIENTRY

eglCreatePbufferSurface(EGLDisplay dpy, EGLConfig config,

                        const EGLint *attrib_list)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLConfig *conf = _eglLookupConfig(config, disp);

   _EGLDriver *drv;

   _EGLSurface *surf;

   EGLSurface ret;

   _EGL_CHECK_CONFIG(disp, conf, EGL_NO_SURFACE, drv);

   surf = drv->API.CreatePbufferSurface(drv, disp, conf, attrib_list);

   ret = (surf) ? _eglLinkSurface(surf) : EGL_NO_SURFACE;

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglDestroySurface(EGLDisplay dpy, EGLSurface surface)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLSurface *surf = _eglLookupSurface(surface, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv);

   _eglUnlinkSurface(surf);

   ret = drv->API.DestroySurface(drv, disp, surf);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglQuerySurface(EGLDisplay dpy, EGLSurface surface,

                EGLint attribute, EGLint *value)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLSurface *surf = _eglLookupSurface(surface, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv);

   ret = drv->API.QuerySurface(drv, disp, surf, attribute, value);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglSurfaceAttrib(EGLDisplay dpy, EGLSurface surface,

                 EGLint attribute, EGLint value)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLSurface *surf = _eglLookupSurface(surface, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv);

   ret = drv->API.SurfaceAttrib(drv, disp, surf, attribute, value);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglBindTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLSurface *surf = _eglLookupSurface(surface, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv);

   ret = drv->API.BindTexImage(drv, disp, surf, buffer);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglReleaseTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLSurface *surf = _eglLookupSurface(surface, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv);

   ret = drv->API.ReleaseTexImage(drv, disp, surf, buffer);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglSwapInterval(EGLDisplay dpy, EGLint interval)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLContext *ctx = _eglGetCurrentContext();

   _EGLSurface *surf;

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_DISPLAY(disp, EGL_FALSE, drv);

   if (_eglGetContextHandle(ctx) == EGL_NO_CONTEXT ||

       ctx->Resource.Display != disp)

      RETURN_EGL_ERROR(disp, EGL_BAD_CONTEXT, EGL_FALSE);

   surf = ctx->DrawSurface;

   if (_eglGetSurfaceHandle(surf) == EGL_NO_SURFACE)

      RETURN_EGL_ERROR(disp, EGL_BAD_SURFACE, EGL_FALSE);

   ret = drv->API.SwapInterval(drv, disp, surf, interval);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglSwapBuffers(EGLDisplay dpy, EGLSurface surface)

{

   _EGLContext *ctx = _eglGetCurrentContext();

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLSurface *surf = _eglLookupSurface(surface, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv);

   /* surface must be bound to current context in EGL 1.4 */

   if (_eglGetContextHandle(ctx) == EGL_NO_CONTEXT ||

       surf != ctx->DrawSurface)

      RETURN_EGL_ERROR(disp, EGL_BAD_SURFACE, EGL_FALSE);

   ret = drv->API.SwapBuffers(drv, disp, surf);

   RETURN_EGL_EVAL(disp, ret);

}

#ifdef EGL_EXT_swap_buffers_with_damage

EGLBoolean EGLAPIENTRY

eglSwapBuffersWithDamageEXT(EGLDisplay dpy, EGLSurface surface,

                            EGLint *rects, EGLint n_rects)

{

   _EGLContext *ctx = _eglGetCurrentContext();

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLSurface *surf = _eglLookupSurface(surface, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv);

   /* surface must be bound to current context in EGL 1.4 */

   if (_eglGetContextHandle(ctx) == EGL_NO_CONTEXT ||

       surf != ctx->DrawSurface)

      RETURN_EGL_ERROR(disp, EGL_BAD_SURFACE, EGL_FALSE);

   if ((n_rects > 0 && rects == NULL) || n_rects < 0)

      RETURN_EGL_ERROR(disp, EGL_BAD_PARAMETER, EGL_FALSE);

   ret = drv->API.SwapBuffersWithDamageEXT(drv, disp, surf, rects, n_rects);

   RETURN_EGL_EVAL(disp, ret);

}

#endif /* EGL_EXT_swap_buffers_with_damage */

EGLBoolean EGLAPIENTRY

eglCopyBuffers(EGLDisplay dpy, EGLSurface surface, EGLNativePixmapType target)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLSurface *surf = _eglLookupSurface(surface, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv);

   if (disp->Platform != _eglGetNativePlatform(disp->PlatformDisplay))

      RETURN_EGL_ERROR(disp, EGL_BAD_NATIVE_PIXMAP, EGL_FALSE);

   ret = drv->API.CopyBuffers(drv, disp, surf, target);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglWaitClient(void)

{

   _EGLContext *ctx = _eglGetCurrentContext();

   _EGLDisplay *disp;

   _EGLDriver *drv;

   EGLBoolean ret;

   if (!ctx)

      RETURN_EGL_SUCCESS(NULL, EGL_TRUE);

   disp = ctx->Resource.Display;

   _eglLockMutex(&disp->Mutex);

   /* let bad current context imply bad current surface */

   if (_eglGetContextHandle(ctx) == EGL_NO_CONTEXT ||

       _eglGetSurfaceHandle(ctx->DrawSurface) == EGL_NO_SURFACE)

      RETURN_EGL_ERROR(disp, EGL_BAD_CURRENT_SURFACE, EGL_FALSE);

   /* a valid current context implies an initialized current display */

   assert(disp->Initialized);

   drv = disp->Driver;

   ret = drv->API.WaitClient(drv, disp, ctx);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglWaitGL(void)

{

   _EGLThreadInfo *t = _eglGetCurrentThread();

   EGLint api_index = t->CurrentAPIIndex;

   EGLint es_index = _eglConvertApiToIndex(EGL_OPENGL_ES_API);

   EGLBoolean ret;

   if (api_index != es_index && _eglIsCurrentThreadDummy())

      RETURN_EGL_ERROR(NULL, EGL_BAD_ALLOC, EGL_FALSE);

   t->CurrentAPIIndex = es_index;

   ret = eglWaitClient();

   t->CurrentAPIIndex = api_index;

   return ret;

}

EGLBoolean EGLAPIENTRY

eglWaitNative(EGLint engine)

{

   _EGLContext *ctx = _eglGetCurrentContext();

   _EGLDisplay *disp;

   _EGLDriver *drv;

   EGLBoolean ret;

   if (!ctx)

      RETURN_EGL_SUCCESS(NULL, EGL_TRUE);

   disp = ctx->Resource.Display;

   _eglLockMutex(&disp->Mutex);

   /* let bad current context imply bad current surface */

   if (_eglGetContextHandle(ctx) == EGL_NO_CONTEXT ||

       _eglGetSurfaceHandle(ctx->DrawSurface) == EGL_NO_SURFACE)

      RETURN_EGL_ERROR(disp, EGL_BAD_CURRENT_SURFACE, EGL_FALSE);

   /* a valid current context implies an initialized current display */

   assert(disp->Initialized);

   drv = disp->Driver;

   ret = drv->API.WaitNative(drv, disp, engine);

   RETURN_EGL_EVAL(disp, ret);

}

EGLDisplay EGLAPIENTRY

eglGetCurrentDisplay(void)

{

   _EGLContext *ctx = _eglGetCurrentContext();

   EGLDisplay ret;

   ret = (ctx) ? _eglGetDisplayHandle(ctx->Resource.Display) : EGL_NO_DISPLAY;

   RETURN_EGL_SUCCESS(NULL, ret);

}

EGLContext EGLAPIENTRY

eglGetCurrentContext(void)

{

   _EGLContext *ctx = _eglGetCurrentContext();

   EGLContext ret;

   ret = _eglGetContextHandle(ctx);

   RETURN_EGL_SUCCESS(NULL, ret);

}

EGLSurface EGLAPIENTRY

eglGetCurrentSurface(EGLint readdraw)

{

   _EGLContext *ctx = _eglGetCurrentContext();

   EGLint err = EGL_SUCCESS;

   _EGLSurface *surf;

   EGLSurface ret;

   if (!ctx)

      RETURN_EGL_SUCCESS(NULL, EGL_NO_SURFACE);

   switch (readdraw) {

   case EGL_DRAW:

      surf = ctx->DrawSurface;

      break;

   case EGL_READ:

      surf = ctx->ReadSurface;

      break;

   default:

      surf = NULL;

      err = EGL_BAD_PARAMETER;

      break;

   }

   ret = _eglGetSurfaceHandle(surf);

   RETURN_EGL_ERROR(NULL, err, ret);

}

EGLint EGLAPIENTRY

eglGetError(void)

{

   _EGLThreadInfo *t = _eglGetCurrentThread();

   EGLint e = t->LastError;

   if (!_eglIsCurrentThreadDummy())

      t->LastError = EGL_SUCCESS;

   return e;

}

__eglMustCastToProperFunctionPointerType EGLAPIENTRY

eglGetProcAddress(const char *procname)

{

   static const struct {

      const char *name;

      _EGLProc function;

   } egl_functions[] = {

      /* core functions should not be queryable, but, well... */

#ifdef _EGL_GET_CORE_ADDRESSES

      /* alphabetical order */

      { "eglBindAPI", (_EGLProc) eglBindAPI },

      { "eglBindTexImage", (_EGLProc) eglBindTexImage },

      { "eglChooseConfig", (_EGLProc) eglChooseConfig },

      { "eglCopyBuffers", (_EGLProc) eglCopyBuffers },

      { "eglCreateContext", (_EGLProc) eglCreateContext },

      { "eglCreatePbufferFromClientBuffer", (_EGLProc) eglCreatePbufferFromClientBuffer },

      { "eglCreatePbufferSurface", (_EGLProc) eglCreatePbufferSurface },

      { "eglCreatePixmapSurface", (_EGLProc) eglCreatePixmapSurface },

      { "eglCreateWindowSurface", (_EGLProc) eglCreateWindowSurface },

      { "eglDestroyContext", (_EGLProc) eglDestroyContext },

      { "eglDestroySurface", (_EGLProc) eglDestroySurface },

      { "eglGetConfigAttrib", (_EGLProc) eglGetConfigAttrib },

      { "eglGetConfigs", (_EGLProc) eglGetConfigs },

      { "eglGetCurrentContext", (_EGLProc) eglGetCurrentContext },

      { "eglGetCurrentDisplay", (_EGLProc) eglGetCurrentDisplay },

      { "eglGetCurrentSurface", (_EGLProc) eglGetCurrentSurface },

      { "eglGetDisplay", (_EGLProc) eglGetDisplay },

      { "eglGetError", (_EGLProc) eglGetError },

      { "eglGetProcAddress", (_EGLProc) eglGetProcAddress },

      { "eglInitialize", (_EGLProc) eglInitialize },

      { "eglMakeCurrent", (_EGLProc) eglMakeCurrent },

      { "eglQueryAPI", (_EGLProc) eglQueryAPI },

      { "eglQueryContext", (_EGLProc) eglQueryContext },

      { "eglQueryString", (_EGLProc) eglQueryString },

      { "eglQuerySurface", (_EGLProc) eglQuerySurface },

      { "eglReleaseTexImage", (_EGLProc) eglReleaseTexImage },

      { "eglReleaseThread", (_EGLProc) eglReleaseThread },

      { "eglSurfaceAttrib", (_EGLProc) eglSurfaceAttrib },

      { "eglSwapBuffers", (_EGLProc) eglSwapBuffers },

      { "eglSwapInterval", (_EGLProc) eglSwapInterval },

      { "eglTerminate", (_EGLProc) eglTerminate },

      { "eglWaitClient", (_EGLProc) eglWaitClient },

      { "eglWaitGL", (_EGLProc) eglWaitGL },

      { "eglWaitNative", (_EGLProc) eglWaitNative },

#endif /* _EGL_GET_CORE_ADDRESSES */

#ifdef EGL_MESA_screen_surface

      { "eglChooseModeMESA", (_EGLProc) eglChooseModeMESA },

      { "eglGetModesMESA", (_EGLProc) eglGetModesMESA },

      { "eglGetModeAttribMESA", (_EGLProc) eglGetModeAttribMESA },

      { "eglCopyContextMESA", (_EGLProc) eglCopyContextMESA },

      { "eglGetScreensMESA", (_EGLProc) eglGetScreensMESA },

      { "eglCreateScreenSurfaceMESA", (_EGLProc) eglCreateScreenSurfaceMESA },

      { "eglShowScreenSurfaceMESA", (_EGLProc) eglShowScreenSurfaceMESA },

      { "eglScreenPositionMESA", (_EGLProc) eglScreenPositionMESA },

      { "eglQueryScreenMESA", (_EGLProc) eglQueryScreenMESA },

      { "eglQueryScreenSurfaceMESA", (_EGLProc) eglQueryScreenSurfaceMESA },

      { "eglQueryScreenModeMESA", (_EGLProc) eglQueryScreenModeMESA },

      { "eglQueryModeStringMESA", (_EGLProc) eglQueryModeStringMESA },

#endif /* EGL_MESA_screen_surface */

#ifdef EGL_MESA_drm_display

      { "eglGetDRMDisplayMESA", (_EGLProc) eglGetDRMDisplayMESA },

#endif

      { "eglCreateImageKHR", (_EGLProc) eglCreateImageKHR },

      { "eglDestroyImageKHR", (_EGLProc) eglDestroyImageKHR },

      { "eglCreateSyncKHR", (_EGLProc) eglCreateSyncKHR },

      { "eglDestroySyncKHR", (_EGLProc) eglDestroySyncKHR },

      { "eglClientWaitSyncKHR", (_EGLProc) eglClientWaitSyncKHR },

      { "eglSignalSyncKHR", (_EGLProc) eglSignalSyncKHR },

      { "eglGetSyncAttribKHR", (_EGLProc) eglGetSyncAttribKHR },

#ifdef EGL_NOK_swap_region

      { "eglSwapBuffersRegionNOK", (_EGLProc) eglSwapBuffersRegionNOK },

#endif

#ifdef EGL_MESA_drm_image

      { "eglCreateDRMImageMESA", (_EGLProc) eglCreateDRMImageMESA },

      { "eglExportDRMImageMESA", (_EGLProc) eglExportDRMImageMESA },

#endif

#ifdef EGL_WL_bind_wayland_display

      { "eglBindWaylandDisplayWL", (_EGLProc) eglBindWaylandDisplayWL },

      { "eglUnbindWaylandDisplayWL", (_EGLProc) eglUnbindWaylandDisplayWL },

      { "eglQueryWaylandBufferWL", (_EGLProc) eglQueryWaylandBufferWL },

#endif

      { "eglPostSubBufferNV", (_EGLProc) eglPostSubBufferNV },

#ifdef EGL_EXT_swap_buffers_with_damage

      { "eglSwapBuffersWithDamageEXT", (_EGLProc) eglSwapBuffersWithDamageEXT },

#endif

      { NULL, NULL }

   };

   EGLint i;

   _EGLProc ret;

   if (!procname)

      RETURN_EGL_SUCCESS(NULL, NULL);

   ret = NULL;

   if (strncmp(procname, "egl", 3) == 0) {

      for (i = 0; egl_functions[i].name; i++) {

         if (strcmp(egl_functions[i].name, procname) == 0) {

            ret = egl_functions[i].function;

            break;

         }

      }

   }

   if (!ret)

      ret = _eglGetDriverProc(procname);

   RETURN_EGL_SUCCESS(NULL, ret);

}

#ifdef EGL_MESA_screen_surface

/*

 * EGL_MESA_screen extension

 */

EGLBoolean EGLAPIENTRY

eglChooseModeMESA(EGLDisplay dpy, EGLScreenMESA screen,

                  const EGLint *attrib_list, EGLModeMESA *modes,

                  EGLint modes_size, EGLint *num_modes)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLScreen *scrn = _eglLookupScreen(screen, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_SCREEN(disp, scrn, EGL_FALSE, drv);

   ret = drv->API.ChooseModeMESA(drv, disp, scrn, attrib_list,

         modes, modes_size, num_modes);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglGetModesMESA(EGLDisplay dpy, EGLScreenMESA screen, EGLModeMESA *modes,

                EGLint mode_size, EGLint *num_mode)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLScreen *scrn = _eglLookupScreen(screen, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_SCREEN(disp, scrn, EGL_FALSE, drv);

   ret = drv->API.GetModesMESA(drv, disp, scrn, modes, mode_size, num_mode);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglGetModeAttribMESA(EGLDisplay dpy, EGLModeMESA mode,

                     EGLint attribute, EGLint *value)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLMode *m = _eglLookupMode(mode, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_MODE(disp, m, EGL_FALSE, drv);

   ret = drv->API.GetModeAttribMESA(drv, disp, m, attribute, value);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglCopyContextMESA(EGLDisplay dpy, EGLContext source, EGLContext dest,

                   EGLint mask)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLContext *source_context = _eglLookupContext(source, disp);

   _EGLContext *dest_context = _eglLookupContext(dest, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_CONTEXT(disp, source_context, EGL_FALSE, drv);

   if (!dest_context)

      RETURN_EGL_ERROR(disp, EGL_BAD_CONTEXT, EGL_FALSE);

   ret = drv->API.CopyContextMESA(drv, disp,

         source_context, dest_context, mask);

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglGetScreensMESA(EGLDisplay dpy, EGLScreenMESA *screens,

                  EGLint max_screens, EGLint *num_screens)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_DISPLAY(disp, EGL_FALSE, drv);

   ret = drv->API.GetScreensMESA(drv, disp, screens, max_screens, num_screens);

   RETURN_EGL_EVAL(disp, ret);

}

EGLSurface EGLAPIENTRY

eglCreateScreenSurfaceMESA(EGLDisplay dpy, EGLConfig config,

                           const EGLint *attrib_list)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLConfig *conf = _eglLookupConfig(config, disp);

   _EGLDriver *drv;

   _EGLSurface *surf;

   EGLSurface ret;

   _EGL_CHECK_CONFIG(disp, conf, EGL_NO_SURFACE, drv);

   surf = drv->API.CreateScreenSurfaceMESA(drv, disp, conf, attrib_list);

   ret = (surf) ? _eglLinkSurface(surf) : EGL_NO_SURFACE;

   RETURN_EGL_EVAL(disp, ret);

}

EGLBoolean EGLAPIENTRY

eglShowScreenSurfaceMESA(EGLDisplay dpy, EGLint screen,

                         EGLSurface surface, EGLModeMESA mode)

{

   _EGLDisplay *disp = _eglLockDisplay(dpy);

   _EGLScreen *scrn = _eglLookupScreen((EGLScreenMESA) screen, disp);

   _EGLSurface *surf = _eglLookupSurface(surface, disp);

   _EGLMode *m = _eglLookupMode(mode, disp);

   _EGLDriver *drv;

   EGLBoolean ret;

   _EGL_CHECK_SCREEN(disp, scrn, EGL_FALSE, drv);

   if (!surf && surface != EGL_NO_SURFACE)

      RETURN_EGL_ERROR(disp, EGL_BAD_SURFACE, EGL_FALSE);

   if (!m && mode != EGL_NO_MODE_MESA)

      RETURN_EGL_ERROR(disp, EGL_BAD_MODE_MESA, EGL_FALSE);

   ret = drv->API.ShowScreenSurfaceMESA(drv, disp, scrn, surf, m);