dri: pull dri_swapbuffers.c into dri_drawable.c

6 files changed, 370 insertions, 346 deletions

diff --git a/src/gallium/state_trackers/glx/dri/dri_context.h b/src/gallium/state_trackers/glx/dri/dri_context.h
index 06b86d69a89..4e6a305abb0 100644
--- a/src/gallium/state_trackers/glx/dri/dri_context.h
+++ b/src/gallium/state_trackers/glx/dri/dri_context.h
@@ -27,12 +27,10 @@
 #ifndef DRI_CONTEXT_H
 #define DRI_CONTEXT_H
 
-#include <stdint.h>
+#include "pipe/p_compiler.h"
 #include "drm.h"
+#include "dri_util.h"
 
-#include "pipe/p_debug.h"
-
-#include "dri_screen.h"
 
 struct pipe_context;
 struct pipe_fence;
@@ -56,35 +54,39 @@ struct dri_context
 };
 
 
-
-struct dri_drawable
-{
-   __DRIdrawablePrivate *dPriv;
-   unsigned stamp;
-
-   struct pipe_fence *last_swap_fence;
-   struct pipe_fence *first_swap_fence;
-
-   struct st_framebuffer *stfb;
-};
-
-
 static INLINE struct dri_context *
 dri_context(__DRIcontextPrivate *driContextPriv)
 {
    return (struct dri_context *) driContextPriv->driverPrivate;
 }
 
-static INLINE struct dri_drawable *
-dri_drawable(__DRIdrawablePrivate * driDrawPriv)
-{
-   return (struct dri_drawable *) driDrawPriv->driverPrivate;
-}
+/***********************************************************************
+ * dri_context.c
+ */
+void 
+dri_destroy_context(__DRIcontextPrivate * driContextPriv);
+
+boolean 
+dri_unbind_context(__DRIcontextPrivate * driContextPriv);
+
+boolean
+dri_make_current(__DRIcontextPrivate * driContextPriv,
+                 __DRIdrawablePrivate * driDrawPriv,
+                 __DRIdrawablePrivate * driReadPriv);
+
+boolean
+dri_create_context(const __GLcontextModes * visual,
+                   __DRIcontextPrivate * driContextPriv,
+                   void *sharedContextPrivate);
+
+
 
 /***********************************************************************
  * dri_lock.c
  */
-void dri_lock_hardware( struct dri_context *dri, struct dri_drawable *drawable );
+void dri_lock_hardware( struct dri_context *context, 
+                        struct dri_drawable *drawable );
+
 void dri_unlock_hardware( struct dri_context *dri );
 boolean dri_is_locked( struct dri_context *dri );
 
diff --git a/src/gallium/state_trackers/glx/dri/dri_drawable.c b/src/gallium/state_trackers/glx/dri/dri_drawable.c
index 7503c40194e..53ac3dbb8c4 100644
--- a/src/gallium/state_trackers/glx/dri/dri_drawable.c
+++ b/src/gallium/state_trackers/glx/dri/dri_drawable.c
@@ -1,3 +1,298 @@
+/**************************************************************************
+ *
+ * Copyright 2009, VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#include "dri_screen.h"
+#include "dri_context.h"
+#include "dri_swapbuffers.h"
+
+#include "pipe/p_context.h"
+#include "state_tracker/st_public.h"
+#include "state_tracker/st_context.h"
+#include "state_tracker/st_cb_fbo.h"
+
+
+static void
+blit_swapbuffers(__DRIdrawablePrivate *dPriv,
+                 __DRIcontextPrivate *cPriv,
+		 struct pipe_surface *src,
+		 const drm_clip_rect_t *rect)
+{
+   struct dri_screen *screen = dri_screen(dPriv->driScreenPriv);
+   struct dri_drawable *fb = dri_drawable(dPriv);
+   struct dri_context *context = dri_context(cPriv);
+
+   const int nbox = dPriv->numClipRects;
+   const drm_clip_rect_t *pbox = dPriv->pClipRects;
+
+   struct pipe_surface *dest = fb->front_surface;
+   const int backWidth = fb->stfb->Base.Width;
+   const int backHeight = fb->stfb->Base.Height;
+   int i;
+
+   for (i = 0; i < nbox; i++, pbox++) {
+      drm_clip_rect_t box;
+      drm_clip_rect_t sbox;
+	 
+      if (pbox->x1 > pbox->x2 ||
+	  pbox->y1 > pbox->y2 ||
+	  (pbox->x2 - pbox->x1) > dest->width || 
+	  (pbox->y2 - pbox->y1) > dest->height) 
+	 continue;
+
+      box = *pbox;
+
+      if (rect) {
+	 drm_clip_rect_t rrect;
+
+	 rrect.x1 = dPriv->x + rect->x1;
+	 rrect.y1 = (dPriv->h - rect->y1 - rect->y2) + dPriv->y;
+	 rrect.x2 = rect->x2 + rrect.x1;
+	 rrect.y2 = rect->y2 + rrect.y1;
+	 if (rrect.x1 > box.x1)
+	    box.x1 = rrect.x1;
+	 if (rrect.y1 > box.y1)
+	    box.y1 = rrect.y1;
+	 if (rrect.x2 < box.x2)
+	    box.x2 = rrect.x2;
+	 if (rrect.y2 < box.y2)
+	    box.y2 = rrect.y2;
+
+	 if (box.x1 > box.x2 || box.y1 > box.y2)
+	    continue;
+      }
+
+      /* restrict blit to size of actually rendered area */
+      if (box.x2 - box.x1 > backWidth)
+	 box.x2 = backWidth + box.x1;
+      if (box.y2 - box.y1 > backHeight)
+	 box.y2 = backHeight + box.y1;
+
+      debug_printf("%s: box %d,%d-%d,%d\n", __FUNCTION__,
+                   box.x1, box.y1, box.x2, box.y2);
+
+      sbox.x1 = box.x1 - dPriv->x;
+      sbox.y1 = box.y1 - dPriv->y;
+
+      ctx->st->pipe->surface_copy( ctx->st->pipe,
+                                   FALSE,
+                                   dest,
+                                   box.x1, box.y1,
+                                   src,
+                                   sbox.x1, sbox.y1,
+                                   box.x2 - box.x1, 
+                                   box.y2 - box.y1 );
+   }
+}
+
+/**
+ * Display a colorbuffer surface in an X window.
+ * Used for SwapBuffers and flushing front buffer rendering.
+ *
+ * \param dPriv  the window/drawable to display into
+ * \param surf  the surface to display
+ * \param rect  optional subrect of surface to display (may be NULL).
+ */
+void
+dri_display_surface(__DRIdrawablePrivate *dPriv,
+                    struct pipe_surface *source,
+                    const drm_clip_rect_t *rect)
+{
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct dri_screen *screen = dri_screen(dPriv->driScreenPriv);
+   struct dri_context *context = screen->dummy_context;
+   struct pipe_winsys *winsys = screen->winsys;
+      
+   if (!context) 
+      return;
+
+   if (drawable->last_swap_fence) {
+      winsys->fence_finish( winsys,
+                            drawable->last_swap_fence,
+                            0 );
+
+      winsys->fence_reference( winsys,
+                               &drawable->last_swap_fence,
+                               NULL );
+   }
+
+   drawable->last_swap_fence = drawable->first_swap_fence;
+   drawable->first_swap_fence = NULL;
+
+   /* The lock_hardware is required for the cliprects.  Buffer offsets
+    * should work regardless.
+    */
+   dri_lock_hardware(context, drawable);
+   {
+      if (dPriv->numClipRects) {
+         blit_swapbuffers( context, dPriv, source, rect );
+      }
+   }
+   dri_unlock_hardware(context);
+
+   if (drawble->stamp != drawable->dPriv->lastStamp) {
+      dri_update_window_size( dpriv );
+   }
+}
+
+
+
+/**
+ * This will be called a drawable is known to have moved/resized.
+ */
+void
+dri_update_window_size(__DRIdrawablePrivate *dPriv)
+{
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   st_resize_framebuffer(drawable->stfb, dPriv->w, dPriv->h);
+   drawable->stamp = dPriv->lastStamp;
+}
+
+
+
+void
+dri_swap_buffers(__DRIdrawablePrivate * dPriv)
+{
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct pipe_surface *back_surf;
+
+   assert(drawable);
+   assert(drawable->stfb);
+
+   back_surf = st_get_framebuffer_surface(drawable->stfb,
+                                          ST_SURFACE_BACK_LEFT);
+   if (back_surf) {
+      st_notify_swapbuffers(drawable->stfb);
+      dri_display_surface(dPriv, back_surf, NULL);
+      st_notify_swapbuffers_complete(drawable->stfb);
+   }
+}
+
+
+/**
+ * Called via glXCopySubBufferMESA() to copy a subrect of the back
+ * buffer to the front buffer/screen.
+ */
+void
+dri_copy_sub_buffer(__DRIdrawablePrivate * dPriv, int x, int y, int w, int h)
+{
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct pipe_surface *back_surf;
+
+   assert(drawable);
+   assert(drawable->stfb);
+
+   back_surf = st_get_framebuffer_surface(drawable->stfb,
+                                          ST_SURFACE_BACK_LEFT);
+   if (back_surf) {
+      drm_clip_rect_t rect;
+      rect.x1 = x;
+      rect.y1 = y;
+      rect.x2 = w;
+      rect.y2 = h;
+
+      st_notify_swapbuffers(drawable->stfb);
+      dri_display_surface(dPriv, back_surf, &rect);
+   }
+}
+
+
+
+/*
+ * The state tracker keeps track of whether the fake frontbuffer has
+ * been touched by any rendering since the last time we copied its
+ * contents to the real frontbuffer.  Our task is easy:
+ */
+static void
+dri_flush_frontbuffer( struct pipe_winsys *winsys,
+                       struct pipe_surface *surf,
+                       void *context_private)
+{
+   struct dri_context *dri = (struct dri_context *) context_private;
+   __DRIdrawablePrivate *dPriv = dri->driDrawable;
+
+   dri_display_surface(dPriv, surf, NULL);
+}
+
+
+
+/* Need to create a surface which wraps the front surface to support
+ * client-side swapbuffers.
+ */
+static void
+dri_create_front_surface(struct dri_screen *screen, 
+                         struct pipe_winsys *winsys, 
+                         unsigned handle)
+{
+   struct pipe_screen *pipe_screen = screen->pipe_screen;
+   struct pipe_texture *texture;
+   struct pipe_texture templat;
+   struct pipe_surface *surface;
+   struct pipe_buffer *buffer;
+   unsigned pitch;
+
+   assert(screen->front.cpp == 4);
+
+//   buffer = dri_buffer_from_handle(screen->winsys,
+//                                        "front", handle);
+
+   if (!buffer)
+      return;
+
+   screen->front.buffer = dri_bo(buffer);
+
+   memset(&templat, 0, sizeof(templat));
+   templat.tex_usage |= PIPE_TEXTURE_USAGE_DISPLAY_TARGET;
+   templat.target = PIPE_TEXTURE_2D;
+   templat.last_level = 0;
+   templat.depth[0] = 1;
+   templat.format = PIPE_FORMAT_A8R8G8B8_UNORM;
+   templat.width[0] = screen->front.width;
+   templat.height[0] = screen->front.height;
+   pf_get_block(templat.format, &templat.block);
+   pitch = screen->front.pitch;
+
+   texture = pipe_screen->texture_blanket(pipe_screen,
+                                          &templat,
+                                          &pitch,
+                                          buffer);
+
+   /* Unref the buffer we don't need it anyways */
+   pipe_buffer_reference(screen, &buffer, NULL);
+
+   surface = pipe_screen->get_tex_surface(pipe_screen,
+                                          texture,
+                                          0,
+                                          0,
+                                          0,
+                                          PIPE_BUFFER_USAGE_GPU_WRITE);
+
+   screen->front.texture = texture;
+   screen->front.surface = surface;
+}
 
 /**
  * This is called when we need to set up GL rendering to a new X window.
@@ -56,8 +351,14 @@ static void
 dri_destroy_buffer(__DRIdrawablePrivate *dPriv)
 {
    struct dri_drawable *drawable = dri_drawable(dPriv);
-   assert(drawable->stfb);
+
+   /* No particular need to wait on fences before dereferencing them:
+    */
+   winsys->fence_reference( winsys, &ctx->last_swap_fence, NULL );
+   winsys->fence_reference( winsys, &ctx->first_swap_fence, NULL );
+
    st_unreference_framebuffer(drawable->stfb);
+
    FREE(drawable);
 }
 
diff --git a/src/gallium/state_trackers/glx/dri/dri_swapbuffers.h b/src/gallium/state_trackers/glx/dri/dri_drawable.h
index 1b8cd857047..cf6b3c8964d 100644
--- a/src/gallium/state_trackers/glx/dri/dri_swapbuffers.h
+++ b/src/gallium/state_trackers/glx/dri/dri_drawable.h
@@ -25,23 +25,54 @@
  *
  **************************************************************************/
 
-#ifndef DRI_SWAPBUFFERS_H
-#define DRI_SWAPBUFFERS_H
+#ifndef DRI_DRAWABLE_H
+#define DRI_DRAWABLE_H
 
+#include "pipe/p_compiler.h"
 
 struct pipe_surface;
+struct pipe_fence;
+struct st_framebuffer;
 
 
-extern void dri_display_surface(__DRIdrawablePrivate * dPriv,
-                                struct pipe_surface *surf,
-                                const drm_clip_rect_t * rect);
+struct dri_drawable
+{
+   __DRIdrawablePrivate *dPriv;
+   unsigned stamp;
 
-extern void dri_swap_buffers(__DRIdrawablePrivate * dPriv);
+   struct pipe_fence *last_swap_fence;
+   struct pipe_fence *first_swap_fence;
 
-extern void dri_copy_sub_buffer(__DRIdrawablePrivate * dPriv,
-                               int x, int y, int w, int h);
+   struct st_framebuffer *stfb;
+};
 
-extern void dri_update_window_size(__DRIdrawablePrivate *dPriv);
+
+static INLINE struct dri_drawable *
+dri_drawable(__DRIdrawablePrivate * driDrawPriv)
+{
+   return (struct dri_drawable *) driDrawPriv->driverPrivate;
+}
+
+
+/***********************************************************************
+ * dri_drawable.c
+ */
+
+void 
+dri_display_surface(__DRIdrawablePrivate * dPriv,
+                    struct pipe_surface *surf,
+                    const drm_clip_rect_t * rect);
+
+void 
+dri_swap_buffers(__DRIdrawablePrivate * dPriv);
+
+void 
+dri_copy_sub_buffer(__DRIdrawablePrivate * dPriv,
+                    int x, int y, 
+                    int w, int h);
+
+void 
+dri_update_window_size(__DRIdrawablePrivate *dPriv);
 
 
 #endif
diff --git a/src/gallium/state_trackers/glx/dri/dri_lock.c b/src/gallium/state_trackers/glx/dri/dri_lock.c
index 9d7bd61e282..b272ab55f34 100644
--- a/src/gallium/state_trackers/glx/dri/dri_lock.c
+++ b/src/gallium/state_trackers/glx/dri/dri_lock.c
@@ -37,7 +37,7 @@ dri_contended_lock(struct dri_context *ctx)
 {
    __DRIdrawablePrivate *dPriv = ctx->dPriv;
    __DRIcontextPrivate *cPriv = ctx->cPriv;
-   __DRIscreenPrivate *sPriv = ctx->sPriv;
+   __DRIscreenPrivate *sPriv = cPriv->driScreenPriv;
 
    drmGetLock(sPriv->fd, cPriv->hHWContext, 0);
 
@@ -53,8 +53,8 @@ dri_contended_lock(struct dri_context *ctx)
  */
 void dri_lock_hardware( struct dri_context *ctx )
 {
-   __DRIscreenPrivate *sPriv = ctx->sPriv;
    __DRIcontextPrivate *cPriv = ctx->cPriv;
+   __DRIscreenPrivate *sPriv = cPriv->driScreenPriv;
    char __ret = 0;
 
    pipe_mutex_lock(lockMutex);
@@ -76,8 +76,8 @@ void dri_lock_hardware( struct dri_context *ctx )
  */
 void dri_unlock_hardware( struct dri_context *ctx )
 {
-   __DRIscreenPrivate *sPriv = ctx->sPriv;
    __DRIcontextPrivate *cPriv = ctx->cPriv;
+   __DRIscreenPrivate *sPriv = cPriv->driScreenPriv;
 
    assert(ctx->locked);
    ctx->locked = FALSE;
diff --git a/src/gallium/state_trackers/glx/dri/dri_screen.h b/src/gallium/state_trackers/glx/dri/dri_screen.h
index 8909c920e42..12ed86d22a9 100644
--- a/src/gallium/state_trackers/glx/dri/dri_screen.h
+++ b/src/gallium/state_trackers/glx/dri/dri_screen.h
@@ -79,20 +79,5 @@ dri_screen(__DRIscreenPrivate *sPriv)
 }
 
 
-extern void dri_destroy_context(__DRIcontextPrivate * driContextPriv);
-
-extern boolean dri_unbind_context(__DRIcontextPrivate * driContextPriv);
-
-extern boolean
-dri_make_current(__DRIcontextPrivate * driContextPriv,
-                 __DRIdrawablePrivate * driDrawPriv,
-                 __DRIdrawablePrivate * driReadPriv);
-
-
-extern boolean
-dri_create_context(const __GLcontextModes * visual,
-                   __DRIcontextPrivate * driContextPriv,
-                   void *sharedContextPrivate);
-
 
 #endif
diff --git a/src/gallium/state_trackers/glx/dri/dri_swapbuffers.c b/src/gallium/state_trackers/glx/dri/dri_swapbuffers.c
deleted file mode 100644
index 6b2b9301344..00000000000
--- a/src/gallium/state_trackers/glx/dri/dri_swapbuffers.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/**************************************************************************
- *
- * Copyright 2009, VMware, Inc.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-
-#include "dri_screen.h"
-#include "dri_context.h"
-#include "dri_swapbuffers.h"
-
-#include "pipe/p_context.h"
-#include "state_tracker/st_public.h"
-#include "state_tracker/st_context.h"
-#include "state_tracker/st_cb_fbo.h"
-
-
-static void
-blit_swapbuffers(__DRIdrawablePrivate *dPriv,
-                 __DRIcontextPrivate *cPriv,
-		 struct pipe_surface *src,
-		 const drm_clip_rect_t *rect)
-{
-   struct dri_screen *screen = dri_screen(dPriv->driScreenPriv);
-   struct dri_drawable *fb = dri_drawable(dPriv);
-   struct dri_context *context = dri_context(cPriv);
-
-   const int nbox = dPriv->numClipRects;
-   const drm_clip_rect_t *pbox = dPriv->pClipRects;
-
-   struct pipe_surface *dest = fb->front_surface;
-   const int backWidth = fb->stfb->Base.Width;
-   const int backHeight = fb->stfb->Base.Height;
-   int i;
-
-   for (i = 0; i < nbox; i++, pbox++) {
-      drm_clip_rect_t box;
-      drm_clip_rect_t sbox;
-	 
-      if (pbox->x1 > pbox->x2 ||
-	  pbox->y1 > pbox->y2 ||
-	  (pbox->x2 - pbox->x1) > dest->width || 
-	  (pbox->y2 - pbox->y1) > dest->height) 
-	 continue;
-
-      box = *pbox;
-
-      if (rect) {
-	 drm_clip_rect_t rrect;
-
-	 rrect.x1 = dPriv->x + rect->x1;
-	 rrect.y1 = (dPriv->h - rect->y1 - rect->y2) + dPriv->y;
-	 rrect.x2 = rect->x2 + rrect.x1;
-	 rrect.y2 = rect->y2 + rrect.y1;
-	 if (rrect.x1 > box.x1)
-	    box.x1 = rrect.x1;
-	 if (rrect.y1 > box.y1)
-	    box.y1 = rrect.y1;
-	 if (rrect.x2 < box.x2)
-	    box.x2 = rrect.x2;
-	 if (rrect.y2 < box.y2)
-	    box.y2 = rrect.y2;
-
-	 if (box.x1 > box.x2 || box.y1 > box.y2)
-	    continue;
-      }
-
-      /* restrict blit to size of actually rendered area */
-      if (box.x2 - box.x1 > backWidth)
-	 box.x2 = backWidth + box.x1;
-      if (box.y2 - box.y1 > backHeight)
-	 box.y2 = backHeight + box.y1;
-
-      debug_printf("%s: box %d,%d-%d,%d\n", __FUNCTION__,
-                   box.x1, box.y1, box.x2, box.y2);
-
-      sbox.x1 = box.x1 - dPriv->x;
-      sbox.y1 = box.y1 - dPriv->y;
-
-      ctx->st->pipe->surface_copy( ctx->st->pipe,
-                                   FALSE,
-                                   dest,
-                                   box.x1, box.y1,
-                                   src,
-                                   sbox.x1, sbox.y1,
-                                   box.x2 - box.x1, 
-                                   box.y2 - box.y1 );
-   }
-}
-
-/**
- * Display a colorbuffer surface in an X window.
- * Used for SwapBuffers and flushing front buffer rendering.
- *
- * \param dPriv  the window/drawable to display into
- * \param surf  the surface to display
- * \param rect  optional subrect of surface to display (may be NULL).
- */
-void
-dri_display_surface(__DRIdrawablePrivate *dPriv,
-                    struct pipe_surface *source,
-                    const drm_clip_rect_t *rect)
-{
-   struct dri_drawable *drawable = dri_drawable(dPriv);
-   struct dri_screen *screen = dri_screen(dPriv->driScreenPriv);
-   struct dri_context *context = screen->dummy_context;
-   struct pipe_winsys *winsys = screen->winsys;
-      
-   if (!context) 
-      return;
-
-   if (drawable->last_swap_fence) {
-      winsys->fence_finish( winsys,
-                            drawable->last_swap_fence,
-                            0 );
-
-      winsys->fence_reference( winsys,
-                               &drawable->last_swap_fence,
-                               NULL );
-   }
-
-   drawable->last_swap_fence = drawable->first_swap_fence;
-   drawable->first_swap_fence = NULL;
-
-   /* The lock_hardware is required for the cliprects.  Buffer offsets
-    * should work regardless.
-    */
-   dri_lock_hardware(context, drawable);
-   {
-      if (dPriv->numClipRects) {
-         blit_swapbuffers( context, dPriv, source, rect );
-      }
-   }
-   dri_unlock_hardware(context);
-
-   if (drawble->stamp != drawable->dPriv->lastStamp) {
-      dri_update_window_size( dpriv );
-   }
-}
-
-
-
-/**
- * This will be called a drawable is known to have moved/resized.
- */
-void
-dri_update_window_size(__DRIdrawablePrivate *dPriv)
-{
-   struct dri_drawable *drawable = dri_drawable(dPriv);
-   st_resize_framebuffer(drawable->stfb, dPriv->w, dPriv->h);
-   drawable->stamp = dPriv->lastStamp;
-}
-
-
-
-void
-dri_swap_buffers(__DRIdrawablePrivate * dPriv)
-{
-   struct dri_drawable *drawable = dri_drawable(dPriv);
-   struct pipe_surface *back_surf;
-
-   assert(drawable);
-   assert(drawable->stfb);
-
-   back_surf = st_get_framebuffer_surface(drawable->stfb,
-                                          ST_SURFACE_BACK_LEFT);
-   if (back_surf) {
-      st_notify_swapbuffers(drawable->stfb);
-      dri_display_surface(dPriv, back_surf, NULL);
-      st_notify_swapbuffers_complete(drawable->stfb);
-   }
-}
-
-
-/**
- * Called via glXCopySubBufferMESA() to copy a subrect of the back
- * buffer to the front buffer/screen.
- */
-void
-dri_copy_sub_buffer(__DRIdrawablePrivate * dPriv, int x, int y, int w, int h)
-{
-   struct dri_drawable *drawable = dri_drawable(dPriv);
-   struct pipe_surface *back_surf;
-
-   assert(drawable);
-   assert(drawable->stfb);
-
-   back_surf = st_get_framebuffer_surface(drawable->stfb,
-                                          ST_SURFACE_BACK_LEFT);
-   if (back_surf) {
-      drm_clip_rect_t rect;
-      rect.x1 = x;
-      rect.y1 = y;
-      rect.x2 = w;
-      rect.y2 = h;
-
-      st_notify_swapbuffers(drawable->stfb);
-      dri_display_surface(dPriv, back_surf, &rect);
-   }
-}
-
-
-
-/*
- * The state tracker keeps track of whether the fake frontbuffer has
- * been touched by any rendering since the last time we copied its
- * contents to the real frontbuffer.  Our task is easy:
- */
-static void
-dri_flush_frontbuffer( struct pipe_winsys *winsys,
-                       struct pipe_surface *surf,
-                       void *context_private)
-{
-   struct dri_context *dri = (struct dri_context *) context_private;
-   __DRIdrawablePrivate *dPriv = dri->driDrawable;
-
-   dri_display_surface(dPriv, surf, NULL);
-}
-
-
-
-/* Need to create a surface which wraps the front surface to support
- * client-side swapbuffers.
- */
-static void
-dri_create_front_surface(struct dri_screen *screen, 
-                         struct pipe_winsys *winsys, 
-                         unsigned handle)
-{
-   struct pipe_screen *pipe_screen = screen->pipe_screen;
-   struct pipe_texture *texture;
-   struct pipe_texture templat;
-   struct pipe_surface *surface;
-   struct pipe_buffer *buffer;
-   unsigned pitch;
-
-   assert(screen->front.cpp == 4);
-
-//   buffer = dri_buffer_from_handle(screen->winsys,
-//                                        "front", handle);
-
-   if (!buffer)
-      return;
-
-   screen->front.buffer = dri_bo(buffer);
-
-   memset(&templat, 0, sizeof(templat));
-   templat.tex_usage |= PIPE_TEXTURE_USAGE_DISPLAY_TARGET;
-   templat.target = PIPE_TEXTURE_2D;
-   templat.last_level = 0;
-   templat.depth[0] = 1;
-   templat.format = PIPE_FORMAT_A8R8G8B8_UNORM;
-   templat.width[0] = screen->front.width;
-   templat.height[0] = screen->front.height;
-   pf_get_block(templat.format, &templat.block);
-   pitch = screen->front.pitch;
-
-   texture = pipe_screen->texture_blanket(pipe_screen,
-                                          &templat,
-                                          &pitch,
-                                          buffer);
-
-   /* Unref the buffer we don't need it anyways */
-   pipe_buffer_reference(screen, &buffer, NULL);
-
-   surface = pipe_screen->get_tex_surface(pipe_screen,
-                                          texture,
-                                          0,
-                                          0,
-                                          0,
-                                          PIPE_BUFFER_USAGE_GPU_WRITE);
-
-   screen->front.texture = texture;
-   screen->front.surface = surface;
-}