[Mesa-dev] [PATCH 1/3] st/egl: Hook up eglSwapInterval

[Fredrik Höglund]

---
 .../state_trackers/egl/common/egl_g3d_api.c        |   21 ++++++++++++++++++++
 src/gallium/state_trackers/egl/common/native.h     |    5 ++++
 2 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/src/gallium/state_trackers/egl/common/egl_g3d_api.c b/src/gallium/state_trackers/egl/common/egl_g3d_api.c
index 58e772f..0d45bec 100644
--- a/src/gallium/state_trackers/egl/common/egl_g3d_api.c
+++ b/src/gallium/state_trackers/egl/common/egl_g3d_api.c
@@ -308,6 +308,10 @@ egl_g3d_create_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
       return NULL;
    }
 
+   /* Initialize the swap interval */
+   if (nsurf->swap_interval)
+      nsurf->swap_interval(nsurf, gsurf->base.SwapInterval);
+
    nsurf->user_data = &gsurf->base;
    gsurf->native = nsurf;
 
@@ -655,6 +659,22 @@ egl_g3d_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf,
 }
 
 static EGLBoolean
+egl_g3d_swap_interval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, EGLint interval)
+{
+   interval = CLAMP(interval, surf->Config->MinSwapInterval, surf->Config->MaxSwapInterval);
+
+   if (surf->SwapInterval != interval) {
+      struct egl_g3d_surface *gsurf = egl_g3d_surface(surf);
+      surf->SwapInterval = interval;
+
+      if (gsurf->native && gsurf->native->swap_interval)
+         return gsurf->native->swap_interval(gsurf->native, interval);
+   }
+
+   return EGL_TRUE;
+}
+
+static EGLBoolean
 egl_g3d_wait_client(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx)
 {
    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
@@ -892,6 +912,7 @@ egl_g3d_init_driver_api(_EGLDriver *drv)
    drv->API.MakeCurrent = egl_g3d_make_current;
    drv->API.SwapBuffers = egl_g3d_swap_buffers;
    drv->API.CopyBuffers = egl_g3d_copy_buffers;
+   drv->API.SwapInterval = egl_g3d_swap_interval;
    drv->API.WaitClient = egl_g3d_wait_client;
    drv->API.WaitNative = egl_g3d_wait_native;
 
diff --git a/src/gallium/state_trackers/egl/common/native.h b/src/gallium/state_trackers/egl/common/native.h
index 312b079..2f7f2e2 100644
--- a/src/gallium/state_trackers/egl/common/native.h
+++ b/src/gallium/state_trackers/egl/common/native.h
@@ -146,6 +146,11 @@ struct native_surface {
     * Wait until all native commands affecting the surface has been executed.
     */
    void (*wait)(struct native_surface *nsurf);
+
+   /**
+    * Set the surface swap interval.
+    */
+   boolean (*swap_interval)(struct native_surface *nsurf, int interval);
 };
 
 /**
-- 
1.7.7.3