[Mesa-dev] [PATCH] egl: updating surface size on x11

[Pielech, Adrian]

I've found that EGLSurface width and height are not updated after window resizing on x11.
Here is the patch for this issue.

---
 src/egl/drivers/dri2/platform_x11.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/egl/drivers/dri2/platform_x11.c b/src/egl/drivers/dri2/platform_x11.c
index a09632d..f3e78db 100644
--- a/src/egl/drivers/dri2/platform_x11.c
+++ b/src/egl/drivers/dri2/platform_x11.c
@@ -835,6 +835,22 @@ dri2_x11_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
    struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
 
+   //Updating surface width and height fields for querying
+   //size by eglQuerySurface with EGL_WIDTH, EGL_HEIGHT
+   //It's needed for window surface when window is resized
+   if (!(draw->Type & EGL_PBUFFER_BIT)) {
+       xcb_generic_error_t *error = NULL;
+        xcb_get_geometry_cookie_t cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
+        xcb_get_geometry_reply_t *reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
+        if (reply != NULL)
+        {
+          dri2_surf->base.Width = reply->width;
+          dri2_surf->base.Height = reply->height;
+          free(reply);
+        }
+        if (error != NULL)
+          free(error);
+   }
+
    if (dri2_dpy->dri2) {
       int64_t ret_val = dri2_x11_swap_buffers_msc(drv, disp, draw, 0, 0, 0);
       if (ret_val != -1) {
-- 
2.7.0.rc3


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