diff --git a/glamor/glamor.c b/glamor/glamor.c
index 4b935de59..4d6a8394e 100644
--- a/glamor/glamor.c
+++ b/glamor/glamor.c
@@ -129,6 +129,23 @@ glamor_set_pixmap_texture(PixmapPtr pixmap, unsigned int tex)
     return TRUE;
 }
 
+_X_EXPORT void
+glamor_clear_pixmap(PixmapPtr pixmap)
+{
+    ScreenPtr screen = pixmap->drawable.pScreen;
+    glamor_screen_private *glamor_priv;
+    glamor_pixmap_private *pixmap_priv;
+    const struct glamor_format *pixmap_format;
+
+    glamor_priv = glamor_get_screen_private(screen);
+    pixmap_priv = glamor_get_pixmap_private(pixmap);
+    pixmap_format = glamor_format_for_pixmap(pixmap);
+
+    assert(pixmap_priv->fbo != NULL);
+
+    glamor_pixmap_clear_fbo(glamor_priv, pixmap_priv->fbo, pixmap_format);
+}
+
 uint32_t
 glamor_get_pixmap_texture(PixmapPtr pixmap)
 {
@@ -781,6 +798,9 @@ glamor_init(ScreenPtr screen, unsigned int flags)
         epoxy_has_gl_extension("GL_NV_pack_subimage");
     glamor_priv->has_dual_blend =
         epoxy_has_gl_extension("GL_ARB_blend_func_extended");
+    glamor_priv->has_clear_texture =
+        epoxy_gl_version() >= 44 ||
+        epoxy_has_gl_extension("GL_ARB_clear_texture");
 
     glamor_priv->can_copyplane = (gl_version >= 30);
 
diff --git a/glamor/glamor.h b/glamor/glamor.h
index c972694e3..038d4d80d 100644
--- a/glamor/glamor.h
+++ b/glamor/glamor.h
@@ -115,6 +115,9 @@ extern _X_EXPORT Bool glamor_set_pixmap_texture(PixmapPtr pixmap,
 
 extern _X_EXPORT void glamor_set_pixmap_type(PixmapPtr pixmap,
                                              glamor_pixmap_type_t type);
+
+extern _X_EXPORT void glamor_clear_pixmap(PixmapPtr pixmap);
+
 extern _X_EXPORT void glamor_block_handler(ScreenPtr screen);
 
 extern _X_EXPORT PixmapPtr glamor_create_pixmap(ScreenPtr screen, int w, int h,
diff --git a/glamor/glamor_fbo.c b/glamor/glamor_fbo.c
index d8c54f471..4b3338b43 100644
--- a/glamor/glamor_fbo.c
+++ b/glamor/glamor_fbo.c
@@ -241,6 +241,24 @@ glamor_create_fbo_array(glamor_screen_private *glamor_priv,
     return NULL;
 }
 
+void
+glamor_pixmap_clear_fbo(glamor_screen_private *glamor_priv, glamor_pixmap_fbo *fbo,
+                        const struct glamor_format *pixmap_format)
+{
+    glamor_make_current(glamor_priv);
+
+    assert(fbo->fb != 0 && fbo->tex != 0);
+
+    if (glamor_priv->has_clear_texture) {
+        glClearTexImage(fbo->tex, 0, pixmap_format->format, pixmap_format->type, NULL);
+    }
+    else {
+        glDrawBuffer(GL_COLOR_ATTACHMENT0); /* assumes fbo->fb was attached as GL_COLOR_ATTACHMENT0 */
+        glClearColor(0.0, 0.0, 0.0, 0.0);
+        glClear(GL_COLOR_BUFFER_BIT);
+    }
+}
+
 glamor_pixmap_fbo *
 glamor_pixmap_detach_fbo(glamor_pixmap_private *pixmap_priv)
 {
diff --git a/glamor/glamor_priv.h b/glamor/glamor_priv.h
index ea7a8bc96..6ccc1c04c 100644
--- a/glamor/glamor_priv.h
+++ b/glamor/glamor_priv.h
@@ -209,6 +209,7 @@ typedef struct glamor_screen_private {
     Bool has_rw_pbo;
     Bool use_quads;
     Bool has_dual_blend;
+    Bool has_clear_texture;
     Bool has_texture_swizzle;
     Bool is_core_profile;
     Bool can_copyplane;
@@ -551,6 +552,8 @@ void glamor_destroy_fbo(glamor_screen_private *glamor_priv,
                         glamor_pixmap_fbo *fbo);
 void glamor_pixmap_destroy_fbo(PixmapPtr pixmap);
 Bool glamor_pixmap_fbo_fixup(ScreenPtr screen, PixmapPtr pixmap);
+void glamor_pixmap_clear_fbo(glamor_screen_private *glamor_priv, glamor_pixmap_fbo *fbo,
+                             const struct glamor_format *pixmap_format);
 
 const struct glamor_format *glamor_format_for_pixmap(PixmapPtr pixmap);
 
diff --git a/hw/xwayland/xwayland-glamor-gbm.c b/hw/xwayland/xwayland-glamor-gbm.c
index bfcf81dbc..9cbce5f55 100644
--- a/hw/xwayland/xwayland-glamor-gbm.c
+++ b/hw/xwayland/xwayland-glamor-gbm.c
@@ -238,8 +238,12 @@ xwl_glamor_gbm_create_pixmap(ScreenPtr screen,
         if (bo) {
             pixmap = xwl_glamor_gbm_create_pixmap_for_bo(screen, bo, depth);
 
-            if (!pixmap)
+            if (!pixmap) {
                 gbm_bo_destroy(bo);
+            }
+            else if (xwl_screen->rootless && hint == CREATE_PIXMAP_USAGE_BACKING_PIXMAP) {
+                glamor_clear_pixmap(pixmap);
+            }
         }
     }