4 files changed, 41 insertions, 0 deletions
diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
index f57dda8..923992d 100644
--- a/src/egl/main/eglapi.c
+++ b/src/egl/main/eglapi.c
@@ -838,6 +838,9 @@ eglGetProcAddress(const char *procname)
       { "eglCreateImageKHR", (_EGLProc) eglCreateImageKHR },
       { "eglDestroyImageKHR", (_EGLProc) eglDestroyImageKHR },
 #endif /* EGL_KHR_image_base */
+#ifdef EGL_NOK_swap_region
+      { "eglSwapBuffersRegionNOK", (_EGLProc) eglSwapBuffersRegionNOK },
+#endif
       { NULL, NULL }
    };
    EGLint i;
@@ -1246,3 +1249,32 @@ eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR image)
 
 
 #endif /* EGL_KHR_image_base */
+
+
+#ifdef EGL_NOK_swap_region
+
+EGLBoolean
+eglSwapBuffersRegionNOK(EGLDisplay dpy, EGLSurface surface,
+			EGLint numRects, const EGLint *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 (!ctx || !_eglIsContextLinked(ctx) || surf != ctx->DrawSurface)
+      RETURN_EGL_ERROR(disp, EGL_BAD_SURFACE, EGL_FALSE);
+
+   if (drv->API.SwapBuffersRegionNOK)
+      ret = drv->API.SwapBuffersRegionNOK(drv, disp, surf, numRects, rects);
+   else
+      ret = drv->API.SwapBuffers(drv, disp, surf);
+
+   RETURN_EGL_EVAL(disp, ret);
+}
+
+#endif /* EGL_NOK_swap_region */
diff --git a/src/egl/main/eglapi.h b/src/egl/main/eglapi.h
index 3e2ba8d..d8c8b49 100644
--- a/src/egl/main/eglapi.h
+++ b/src/egl/main/eglapi.h
@@ -76,6 +76,9 @@ typedef _EGLImage *(*CreateImageKHR_t)(_EGLDriver *drv, _EGLDisplay *dpy, _EGLCo
 typedef EGLBoolean (*DestroyImageKHR_t)(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *image);
 #endif /* EGL_KHR_image_base */
 
+#ifdef EGL_NOK_swap_region
+typedef EGLBoolean (*SwapBuffersRegionNOK_t)(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf, EGLint numRects, const EGLint *rects);
+#endif
 
 /**
  * The API dispatcher jumps through these functions
@@ -134,6 +137,10 @@ struct _egl_api
    CreateImageKHR_t CreateImageKHR;
    DestroyImageKHR_t DestroyImageKHR;
 #endif /* EGL_KHR_image_base */
+
+#ifdef EGL_NOK_swap_region
+   SwapBuffersRegionNOK_t SwapBuffersRegionNOK;
+#endif
 };
 
 #endif /* EGLAPI_INCLUDED */
diff --git a/src/egl/main/egldisplay.h b/src/egl/main/egldisplay.h
index 21bf22b..0b7f9d8 100644
--- a/src/egl/main/egldisplay.h
+++ b/src/egl/main/egldisplay.h
@@ -46,6 +46,7 @@ struct _egl_extensions
    EGLBoolean KHR_gl_texture_cubemap_image;
    EGLBoolean KHR_gl_texture_3D_image;
    EGLBoolean KHR_gl_renderbuffer_image;
+   EGLBoolean NOK_swap_region;
 
    char String[_EGL_MAX_EXTENSIONS_LEN];
 };
diff --git a/src/egl/main/eglmisc.c b/src/egl/main/eglmisc.c
index 984e426..82ddb6c 100644
--- a/src/egl/main/eglmisc.c
+++ b/src/egl/main/eglmisc.c
@@ -96,6 +96,7 @@ _eglUpdateExtensionsString(_EGLDisplay *dpy)
    _EGL_CHECK_EXTENSION(KHR_gl_texture_3D_image);
    _EGL_CHECK_EXTENSION(KHR_gl_renderbuffer_image);
 
+   _EGL_CHECK_EXTENSION(NOK_swap_region);
 #undef _EGL_CHECK_EXTENSION
 }