egl: Fix leak of X11 pixmaps backing pbuffers in DRI3.

This is basically copied from the DRI2 destroy path.  Without this,
Raspberry Pi would quickly run out of CMA during the EGL tests in the CTS
due to all the pixmaps laying around.

Fixes: f35198badeb9 ("egl/x11: Implement dri3 support with loader's dri3 helper")
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>

diff --git a/src/egl/drivers/dri2/platform_x11_dri3.c b/src/egl/drivers/dri2/platform_x11_dri3.c
index c3c9c2dd45d6a47bbb0c811d7c94d1c0c43fcc99..e1967422f0a8dfb48196297571f807481ece95be 100644 (file)
--- a/src/egl/drivers/dri2/platform_x11_dri3.c
+++ b/src/egl/drivers/dri2/platform_x11_dri3.c
@@ -107,12 +107,17 @@ static const struct loader_dri3_vtable egl_dri3_vtable = {
 static EGLBoolean
 dri3_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
 {
+   struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
    struct dri3_egl_surface *dri3_surf = dri3_egl_surface(surf);
+   xcb_drawable_t drawable = dri3_surf->loader_drawable.drawable;
 
    (void) drv;
 
    loader_dri3_drawable_fini(&dri3_surf->loader_drawable);
 
+   if (surf->Type == EGL_PBUFFER_BIT)
+      xcb_free_pixmap (dri2_dpy->conn, drawable);
+
    dri2_fini_surface(surf);
    free(surf);