[PATCH xserver 05/11 v2] glamor: Hook up EGL DestroyPixmap through the normal wrap chain.

[Eric Anholt]

One less layering violation (EGL should call glamor, if anything, not
the other way around).

v2: Move glamor.c's DestroyPixmap wrapping up above the
    glamor_egl_screen_init() call, since glamor.c's DestroyPixmap
    needs to be the bottom of the stack (it calls fb directly and
    doesn't wrap).  Caught by Michel.

Signed-off-by: Eric Anholt <eric at anholt.net>
---
 glamor/glamor.c               |  9 +++------
 glamor/glamor.h               |  2 --
 glamor/glamor_egl.c           | 33 +++++++++++++++++++++++----------
 glamor/glamor_egl_stubs.c     |  5 -----
 hw/xwayland/xwayland-glamor.c |  5 -----
 5 files changed, 26 insertions(+), 28 deletions(-)

diff --git a/glamor/glamor.c b/glamor/glamor.c
index dbaee46..3b5fa9b 100644
--- a/glamor/glamor.c
+++ b/glamor/glamor.c
@@ -206,9 +206,6 @@ Bool
 glamor_destroy_pixmap(PixmapPtr pixmap)
 {
     if (pixmap->refcnt == 1) {
-#if GLAMOR_HAS_GBM
-        glamor_egl_destroy_pixmap_image(pixmap);
-#endif
         glamor_pixmap_destroy_fbo(pixmap);
     }
 
@@ -454,6 +451,9 @@ glamor_init(ScreenPtr screen, unsigned int flags)
     glamor_priv->saved_procs.close_screen = screen->CloseScreen;
     screen->CloseScreen = glamor_close_screen;
 
+    glamor_priv->saved_procs.destroy_pixmap = screen->DestroyPixmap;
+    screen->DestroyPixmap = glamor_destroy_pixmap;
+
     /* If we are using egl screen, call egl screen init to
      * register correct close screen function. */
     if (flags & GLAMOR_USE_EGL_SCREEN) {
@@ -608,9 +608,6 @@ glamor_init(ScreenPtr screen, unsigned int flags)
     glamor_priv->saved_procs.create_pixmap = screen->CreatePixmap;
     screen->CreatePixmap = glamor_create_pixmap;
 
-    glamor_priv->saved_procs.destroy_pixmap = screen->DestroyPixmap;
-    screen->DestroyPixmap = glamor_destroy_pixmap;
-
     glamor_priv->saved_procs.get_spans = screen->GetSpans;
     screen->GetSpans = glamor_get_spans;
 
diff --git a/glamor/glamor.h b/glamor/glamor.h
index 6d135df..4459fa4 100644
--- a/glamor/glamor.h
+++ b/glamor/glamor.h
@@ -147,8 +147,6 @@ extern _X_EXPORT int glamor_egl_dri3_fd_name_from_tex(ScreenPtr, PixmapPtr,
                                                       unsigned int, Bool,
                                                       CARD16 *, CARD32 *);
 
-extern void glamor_egl_destroy_pixmap_image(PixmapPtr pixmap);
-
 extern _X_EXPORT void *glamor_egl_get_gbm_device(ScreenPtr screen);
 
 /* @glamor_supports_pixmap_import_export: Returns whether
diff --git a/glamor/glamor_egl.c b/glamor/glamor_egl.c
index 24d5586..761874f 100644
--- a/glamor/glamor_egl.c
+++ b/glamor/glamor_egl.c
@@ -78,6 +78,7 @@ struct glamor_egl_screen_private {
     int dri3_capable;
 
     CloseScreenProcPtr saved_close_screen;
+    DestroyPixmapProcPtr saved_destroy_pixmap;
     xf86FreeScreenProc *saved_free_screen;
 };
 
@@ -598,20 +599,29 @@ glamor_pixmap_from_fd(ScreenPtr screen,
 #endif
 }
 
-void
-glamor_egl_destroy_pixmap_image(PixmapPtr pixmap)
+static Bool
+glamor_egl_destroy_pixmap(PixmapPtr pixmap)
 {
-    struct glamor_pixmap_private *pixmap_priv =
-        glamor_get_pixmap_private(pixmap);
+    ScreenPtr screen = pixmap->drawable.pScreen;
+    ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
+    struct glamor_egl_screen_private *glamor_egl =
+        glamor_egl_get_screen_private(scrn);
+    Bool ret;
 
-    if (pixmap_priv->image) {
-        ScrnInfoPtr scrn = xf86ScreenToScrn(pixmap->drawable.pScreen);
-        struct glamor_egl_screen_private *glamor_egl =
-            glamor_egl_get_screen_private(scrn);
+    if (pixmap->refcnt == 1) {
+        struct glamor_pixmap_private *pixmap_priv =
+            glamor_get_pixmap_private(pixmap);
 
-        eglDestroyImageKHR(glamor_egl->display, pixmap_priv->image);
-        pixmap_priv->image = NULL;
+        if (pixmap_priv->image)
+            eglDestroyImageKHR(glamor_egl->display, pixmap_priv->image);
     }
+
+    screen->DestroyPixmap = glamor_egl->saved_destroy_pixmap;
+    ret = screen->DestroyPixmap(pixmap);
+    glamor_egl->saved_destroy_pixmap = screen->DestroyPixmap;
+    screen->DestroyPixmap = glamor_egl_destroy_pixmap;
+
+    return ret;
 }
 
 _X_EXPORT void
@@ -723,6 +733,9 @@ glamor_egl_screen_init(ScreenPtr screen, struct glamor_context *glamor_ctx)
     glamor_egl->saved_close_screen = screen->CloseScreen;
     screen->CloseScreen = glamor_egl_close_screen;
 
+    glamor_egl->saved_destroy_pixmap = screen->DestroyPixmap;
+    screen->DestroyPixmap = glamor_egl_destroy_pixmap;
+
     glamor_ctx->ctx = glamor_egl->context;
     glamor_ctx->display = glamor_egl->display;
 
diff --git a/glamor/glamor_egl_stubs.c b/glamor/glamor_egl_stubs.c
index c11e6d5..35944c8 100644
--- a/glamor/glamor_egl_stubs.c
+++ b/glamor/glamor_egl_stubs.c
@@ -35,11 +35,6 @@ glamor_egl_screen_init(ScreenPtr screen, struct glamor_context *glamor_ctx)
 {
 }
 
-void
-glamor_egl_destroy_pixmap_image(PixmapPtr pixmap)
-{
-}
-
 int
 glamor_egl_dri3_fd_name_from_tex(ScreenPtr screen,
                                  PixmapPtr pixmap,
diff --git a/hw/xwayland/xwayland-glamor.c b/hw/xwayland/xwayland-glamor.c
index ece7dbe..dedefdc 100644
--- a/hw/xwayland/xwayland-glamor.c
+++ b/hw/xwayland/xwayland-glamor.c
@@ -400,11 +400,6 @@ xwl_screen_init_glamor(struct xwl_screen *xwl_screen,
     return TRUE;
 }
 
-void
-glamor_egl_destroy_pixmap_image(PixmapPtr pixmap)
-{
-}
-
 int
 glamor_egl_dri3_fd_name_from_tex(ScreenPtr screen,
                                  PixmapPtr pixmap,
-- 
2.6.2