#include "eglsurface.h"
+static void
+_eglClampSwapInterval(_EGLSurface *surf, EGLint interval)
+{
+ EGLint bound = GET_CONFIG_ATTRIB(surf->Config, EGL_MAX_SWAP_INTERVAL);
+ if (interval >= bound) {
+ interval = bound;
+ }
+ else {
+ bound = GET_CONFIG_ATTRIB(surf->Config, EGL_MIN_SWAP_INTERVAL);
+ if (interval < bound)
+ interval = bound;
+ }
+ surf->SwapInterval = interval;
+}
+
+
/**
* Do error check on parameters and initialize the given _EGLSurface object.
* \return EGL_TRUE if no errors, EGL_FALSE otherwise.
surf->TextureTarget = texTarget;
surf->MipmapTexture = mipmapTex;
surf->MipmapLevel = 0;
- surf->SwapInterval = 0;
+ /* the default swap interval is 1 */
+ _eglClampSwapInterval(surf, 1);
+
#ifdef EGL_VERSION_1_2
surf->SwapBehavior = EGL_BUFFER_DESTROYED; /* XXX ok? */
surf->HorizontalResolution = EGL_UNKNOWN; /* set by caller */
EGLBoolean
-_eglSwapInterval(_EGLDriver *drv, _EGLDisplay *dpy, EGLint interval)
+_eglSwapInterval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
+ EGLint interval)
{
- _EGLSurface *surf = _eglGetCurrentSurface(EGL_DRAW);
- if (surf)
- surf->SwapInterval = interval;
+ _eglClampSwapInterval(surf, interval);
return EGL_TRUE;
}