9 files changed, 335 insertions, 190 deletions

diff --git a/glamor/Makefile.am b/glamor/Makefile.am
index bde58b632..cb81872b4 100644
--- a/glamor/Makefile.am
+++ b/glamor/Makefile.am
@@ -21,6 +21,8 @@ libglamor_la_SOURCES = \
 	glamor_image.c \
 	glamor_render.c \
 	glamor_gradient.c \
+	glamor_prepare.c \
+	glamor_prepare.h \
 	glamor_program.c \
 	glamor_program.h \
 	glamor_rects.c \
diff --git a/glamor/glamor.c b/glamor/glamor.c
index 08f6ba174..6aaf1b40f 100644
--- a/glamor/glamor.c
+++ b/glamor/glamor.c
@@ -397,6 +397,10 @@ glamor_init(ScreenPtr screen, unsigned int flags)
         }
     }
 
+    glamor_priv->has_rw_pbo = FALSE;
+    if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP)
+        glamor_priv->has_rw_pbo = TRUE;
+
     glamor_priv->has_khr_debug = epoxy_has_gl_extension("GL_KHR_debug");
     glamor_priv->has_pack_invert =
         epoxy_has_gl_extension("GL_MESA_pack_invert");
diff --git a/glamor/glamor_core.c b/glamor/glamor_core.c
index b34943761..ffb6eba4b 100644
--- a/glamor/glamor_core.c
+++ b/glamor/glamor_core.c
@@ -114,27 +114,6 @@ glamor_link_glsl_prog(ScreenPtr screen, GLint prog, const char *format, ...)
     }
 }
 
-Bool
-glamor_prepare_access(DrawablePtr drawable, glamor_access_t access)
-{
-    PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
-    glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
-
-    if (pixmap->devPrivate.ptr) {
-        /* Already mapped, nothing needs to be done.  Note that we
-         * aren't allowing promotion from RO to RW, because it would
-         * require re-mapping the PBO.
-         */
-        assert(!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv) ||
-               access == GLAMOR_ACCESS_RO ||
-               pixmap_priv->base.map_access == GLAMOR_ACCESS_RW);
-        return TRUE;
-    }
-    pixmap_priv->base.map_access = access;
-
-    return glamor_download_pixmap_to_cpu(pixmap, access);
-}
-
 /*
  *  When downloading a unsupported color format to CPU memory,
     we need to shuffle the color elements and then use a supported
@@ -313,91 +292,6 @@ glamor_fini_finish_access_shaders(ScreenPtr screen)
     glDeleteProgram(glamor_priv->finish_access_prog[1]);
 }
 
-void
-glamor_finish_access(DrawablePtr drawable)
-{
-    PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
-    glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
-    glamor_screen_private *glamor_priv =
-        glamor_get_screen_private(drawable->pScreen);
-
-    if (!GLAMOR_PIXMAP_PRIV_HAS_FBO_DOWNLOADED(pixmap_priv))
-        return;
-
-    /* If we are doing a series of unmaps from a nested map, we're
-     * done.  None of the callers do any rendering to maps after
-     * starting an unmap sequence, so we don't need to delay until the
-     * last nested unmap.
-     */
-    if (!pixmap->devPrivate.ptr)
-        return;
-
-    if (pixmap_priv->base.map_access == GLAMOR_ACCESS_RW) {
-        glamor_restore_pixmap_to_texture(pixmap);
-    }
-
-    if (pixmap_priv->base.fbo->pbo != 0 && pixmap_priv->base.fbo->pbo_valid) {
-        assert(glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP);
-
-        glamor_make_current(glamor_priv);
-        glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
-        glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
-        glDeleteBuffers(1, &pixmap_priv->base.fbo->pbo);
-
-        pixmap_priv->base.fbo->pbo_valid = FALSE;
-        pixmap_priv->base.fbo->pbo = 0;
-    }
-    else {
-        free(pixmap->devPrivate.ptr);
-    }
-
-    if (pixmap_priv->type == GLAMOR_TEXTURE_DRM)
-        pixmap->devKind = pixmap_priv->base.drm_stride;
-
-    if (pixmap_priv->base.gl_fbo == GLAMOR_FBO_DOWNLOADED)
-        pixmap_priv->base.gl_fbo = GLAMOR_FBO_NORMAL;
-
-    pixmap->devPrivate.ptr = NULL;
-}
-
-/**
- * Calls uxa_prepare_access with UXA_PREPARE_SRC for the tile, if that is the
- * current fill style.
- *
- * Solid doesn't use an extra pixmap source, so we don't worry about them.
- * Stippled/OpaqueStippled are 1bpp and can be in fb, so we should worry
- * about them.
- */
-Bool
-glamor_prepare_access_gc(GCPtr gc)
-{
-    if (gc->stipple) {
-        if (!glamor_prepare_access(&gc->stipple->drawable, GLAMOR_ACCESS_RO))
-            return FALSE;
-    }
-    if (gc->fillStyle == FillTiled) {
-        if (!glamor_prepare_access(&gc->tile.pixmap->drawable,
-                                   GLAMOR_ACCESS_RO)) {
-            if (gc->stipple)
-                glamor_finish_access(&gc->stipple->drawable);
-            return FALSE;
-        }
-    }
-    return TRUE;
-}
-
-/**
- * Finishes access to the tile in the GC, if used.
- */
-void
-glamor_finish_access_gc(GCPtr gc)
-{
-    if (gc->fillStyle == FillTiled)
-        glamor_finish_access(&gc->tile.pixmap->drawable);
-    if (gc->stipple)
-        glamor_finish_access(&gc->stipple->drawable);
-}
-
 Bool
 glamor_stipple(PixmapPtr pixmap, PixmapPtr stipple,
                int x, int y, int width, int height,
diff --git a/glamor/glamor_picture.c b/glamor/glamor_picture.c
index 5fdc5f9b0..cbbc19406 100644
--- a/glamor/glamor_picture.c
+++ b/glamor/glamor_picture.c
@@ -45,24 +45,6 @@ glamor_upload_picture_to_texture(PicturePtr picture)
     return glamor_upload_pixmap_to_texture(pixmap);
 }
 
-Bool
-glamor_prepare_access_picture(PicturePtr picture, glamor_access_t access)
-{
-    if (!picture || !picture->pDrawable)
-        return TRUE;
-
-    return glamor_prepare_access(picture->pDrawable, access);
-}
-
-void
-glamor_finish_access_picture(PicturePtr picture)
-{
-    if (!picture || !picture->pDrawable)
-        return;
-
-    glamor_finish_access(picture->pDrawable);
-}
-
 /* 
  * We should already have drawable attached to it, if it has one.
  * Then set the attached pixmap to is_picture format, and set
diff --git a/glamor/glamor_prepare.c b/glamor/glamor_prepare.c
new file mode 100644
index 000000000..6fb8a9156
--- /dev/null
+++ b/glamor/glamor_prepare.c
@@ -0,0 +1,266 @@
+/*
+ * Copyright © 2014 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include "glamor_priv.h"
+#include "glamor_prepare.h"
+#include "glamor_transfer.h"
+
+/*
+ * Make a pixmap ready to draw with fb by
+ * creating a PBO large enough for the whole object
+ * and downloading all of the FBOs into it.
+ */
+
+static Bool
+glamor_prep_pixmap_box(PixmapPtr pixmap, glamor_access_t access, BoxPtr box)
+{
+    ScreenPtr                   screen = pixmap->drawable.pScreen;
+    glamor_screen_private       *glamor_priv = glamor_get_screen_private(screen);
+    glamor_pixmap_private       *priv = glamor_get_pixmap_private(pixmap);
+    int                         gl_access, gl_usage;
+    RegionRec                   region;
+
+    if (priv->type == GLAMOR_DRM_ONLY)
+        return FALSE;
+
+    if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(priv))
+        return TRUE;
+
+    RegionInit(&region, box, 1);
+
+    /* See if it's already mapped */
+    if (pixmap->devPrivate.ptr) {
+        /*
+         * Someone else has mapped this pixmap;
+         * we'll assume that it's directly mapped
+         * by a lower level driver
+         */
+        if (!priv->base.prepared)
+            return TRUE;
+
+        /* In X, multiple Drawables can be stored in the same Pixmap (such as
+         * each individual window in a non-composited screen pixmap, or the
+         * reparented window contents inside the window-manager-decorated window
+         * pixmap on a composited screen).
+         *
+         * As a result, when doing a series of mappings for a fallback, we may
+         * need to add more boxes to the set of data we've downloaded, as we go.
+         */
+        RegionSubtract(&region, &region, &priv->base.prepare_region);
+        if (!RegionNotEmpty(&region))
+            return TRUE;
+
+        if (access == GLAMOR_ACCESS_RW)
+            FatalError("attempt to remap buffer as writable");
+
+        if (priv->base.pbo) {
+            glBindBuffer(GL_PIXEL_PACK_BUFFER, priv->base.pbo);
+            glUnmapBuffer(GL_PIXEL_PACK_BUFFER);
+            pixmap->devPrivate.ptr = NULL;
+        }
+    } else {
+        RegionInit(&priv->base.prepare_region, box, 1);
+
+        if (glamor_priv->has_rw_pbo) {
+            if (priv->base.pbo == 0)
+                glGenBuffers(1, &priv->base.pbo);
+
+            if (access == GLAMOR_ACCESS_RW)
+                gl_usage = GL_DYNAMIC_DRAW;
+            else
+                gl_usage = GL_STREAM_READ;
+
+            glBindBuffer(GL_PIXEL_PACK_BUFFER, priv->base.pbo);
+            glBufferData(GL_PIXEL_PACK_BUFFER, pixmap->devKind * pixmap->drawable.height, NULL, gl_usage);
+        } else {
+            pixmap->devPrivate.ptr = malloc (pixmap->devKind * pixmap->drawable.height);
+            if (!pixmap->devPrivate.ptr)
+                return FALSE;
+        }
+        priv->base.map_access = access;
+    }
+
+    glamor_download_boxes(pixmap, RegionRects(&region), RegionNumRects(&region),
+                          0, 0, 0, 0, pixmap->devPrivate.ptr, pixmap->devKind);
+
+    RegionUninit(&region);
+
+    if (glamor_priv->has_rw_pbo) {
+        if (priv->base.map_access == GLAMOR_ACCESS_RW)
+            gl_access = GL_READ_WRITE;
+        else
+            gl_access = GL_READ_ONLY;
+
+        pixmap->devPrivate.ptr = glMapBuffer(GL_PIXEL_PACK_BUFFER, gl_access);
+        glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
+    }
+
+    priv->base.prepared = TRUE;
+    return TRUE;
+}
+
+/*
+ * When we're done with the drawable, unmap the PBO, reupload
+ * if we were writing to it and then unbind it to release the memory
+ */
+
+static void
+glamor_fini_pixmap(PixmapPtr pixmap)
+{
+    ScreenPtr                   screen = pixmap->drawable.pScreen;
+    glamor_screen_private       *glamor_priv = glamor_get_screen_private(screen);
+    glamor_pixmap_private       *priv = glamor_get_pixmap_private(pixmap);
+
+    if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(priv))
+        return;
+
+    if (!priv->base.prepared)
+        return;
+
+    if (glamor_priv->has_rw_pbo) {
+        glBindBuffer(GL_PIXEL_UNPACK_BUFFER, priv->base.pbo);
+        glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);
+        pixmap->devPrivate.ptr = NULL;
+    }
+
+    if (priv->base.map_access == GLAMOR_ACCESS_RW)
+        glamor_upload_boxes(pixmap, RegionRects(&priv->base.prepare_region), RegionNumRects(&priv->base.prepare_region),
+                            0, 0, 0, 0, pixmap->devPrivate.ptr, pixmap->devKind);
+
+    RegionUninit(&priv->base.prepare_region);
+
+    if (glamor_priv->has_rw_pbo) {
+        glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
+        glDeleteBuffers(1, &priv->base.pbo);
+    } else {
+        free (pixmap->devPrivate.ptr);
+        pixmap->devPrivate.ptr = NULL;
+    }
+
+    priv->base.prepared = FALSE;
+}
+
+Bool
+glamor_prepare_access(DrawablePtr drawable, glamor_access_t access)
+{
+    PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
+    BoxRec box;
+    int off_x, off_y;
+
+    glamor_get_drawable_deltas(drawable, pixmap, &off_x, &off_y);
+
+    box.x1 = drawable->x + off_x;
+    box.x2 = box.x1 + drawable->width;
+    box.y1 = drawable->y + off_y;
+    box.y2 = box.y1 + drawable->height;
+    return glamor_prep_pixmap_box(pixmap, access, &box);
+}
+
+Bool
+glamor_prepare_access_box(DrawablePtr drawable, glamor_access_t access,
+                         int x, int y, int w, int h)
+{
+    PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
+    BoxRec box;
+    int off_x, off_y;
+
+    glamor_get_drawable_deltas(drawable, pixmap, &off_x, &off_y);
+    box.x1 = drawable->x + x + off_x;
+    box.x2 = box.x1 + w;
+    box.y1 = drawable->y + y + off_y;
+    box.y2 = box.y1 + h;
+    return glamor_prep_pixmap_box(pixmap, access, &box);
+}
+
+void
+glamor_finish_access(DrawablePtr drawable)
+{
+    glamor_fini_pixmap(glamor_get_drawable_pixmap(drawable));
+}
+
+/*
+ * Make a picture ready to use with fb.
+ */
+
+Bool
+glamor_prepare_access_picture(PicturePtr picture, glamor_access_t access)
+{
+    if (!picture || !picture->pDrawable)
+        return TRUE;
+
+    return glamor_prepare_access(picture->pDrawable, access);
+}
+
+Bool
+glamor_prepare_access_picture_box(PicturePtr picture, glamor_access_t access,
+                        int x, int y, int w, int h)
+{
+    if (!picture || !picture->pDrawable)
+        return TRUE;
+    return glamor_prepare_access_box(picture->pDrawable, access,
+                                    x, y, w, h);
+}
+
+void
+glamor_finish_access_picture(PicturePtr picture)
+{
+    if (!picture || !picture->pDrawable)
+        return;
+
+    glamor_finish_access(picture->pDrawable);
+}
+
+/*
+ * Make a GC ready to use with fb. This just
+ * means making sure the appropriate fill pixmap is
+ * in CPU memory again
+ */
+
+Bool
+glamor_prepare_access_gc(GCPtr gc)
+{
+    switch (gc->fillStyle) {
+    case FillTiled:
+        return glamor_prepare_access(&gc->tile.pixmap->drawable, GLAMOR_ACCESS_RO);
+    case FillStippled:
+    case FillOpaqueStippled:
+        return glamor_prepare_access(&gc->stipple->drawable, GLAMOR_ACCESS_RO);
+    }
+    return TRUE;
+}
+
+/*
+ * Free any temporary CPU pixmaps for the GC
+ */
+void
+glamor_finish_access_gc(GCPtr gc)
+{
+    switch (gc->fillStyle) {
+    case FillTiled:
+        glamor_finish_access(&gc->tile.pixmap->drawable);
+        break;
+    case FillStippled:
+    case FillOpaqueStippled:
+        glamor_finish_access(&gc->stipple->drawable);
+        break;
+    }
+}
diff --git a/glamor/glamor_prepare.h b/glamor/glamor_prepare.h
new file mode 100644
index 000000000..85fa79574
--- /dev/null
+++ b/glamor/glamor_prepare.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright © 2014 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifndef _GLAMOR_PREPARE_H_
+#define _GLAMOR_PREPARE_H_
+
+Bool
+glamor_prepare_access(DrawablePtr drawable, glamor_access_t access);
+
+Bool
+glamor_prepare_access_box(DrawablePtr drawable, glamor_access_t access,
+                         int x, int y, int w, int h);
+
+void
+glamor_finish_access(DrawablePtr drawable);
+
+Bool
+glamor_prepare_access_picture(PicturePtr picture, glamor_access_t access);
+
+Bool
+glamor_prepare_access_picture_box(PicturePtr picture, glamor_access_t access,
+                        int x, int y, int w, int h);
+
+void
+glamor_finish_access_picture(PicturePtr picture);
+
+Bool
+glamor_prepare_access_gc(GCPtr gc);
+
+void
+glamor_finish_access_gc(GCPtr gc);
+
+#endif /* _GLAMOR_PREPARE_H_ */
diff --git a/glamor/glamor_priv.h b/glamor/glamor_priv.h
index c56c55973..531d25d17 100644
--- a/glamor/glamor_priv.h
+++ b/glamor/glamor_priv.h
@@ -209,6 +209,7 @@ typedef struct glamor_screen_private {
     int has_buffer_storage;
     int has_khr_debug;
     int max_fbo_size;
+    int has_rw_pbo;
 
     struct xorg_list
         fbo_cache[CACHE_FORMAT_COUNT][CACHE_BUCKET_WCOUNT][CACHE_BUCKET_HCOUNT];
@@ -430,6 +431,9 @@ typedef struct glamor_pixmap_private_base {
     int drm_stride;
     glamor_screen_private *glamor_priv;
     PicturePtr picture;
+    GLuint pbo;
+    RegionRec prepare_region;
+    Bool prepared;
 #if GLAMOR_HAS_GBM
     EGLImageKHR image;
 #endif
@@ -624,14 +628,9 @@ void glamor_copy_n_to_n(DrawablePtr src, DrawablePtr dst, GCPtr gc,
                         Bool upsidedown, Pixel bitplane, void *closure);
 
 /* glamor_core.c */
-Bool glamor_prepare_access(DrawablePtr drawable, glamor_access_t access);
-void glamor_finish_access(DrawablePtr drawable);
-Bool glamor_prepare_access_window(WindowPtr window);
-void glamor_finish_access_window(WindowPtr window);
-Bool glamor_prepare_access_gc(GCPtr gc);
-void glamor_finish_access_gc(GCPtr gc);
 void glamor_init_finish_access_shaders(ScreenPtr screen);
 void glamor_fini_finish_access_shaders(ScreenPtr screen);
+
 const Bool glamor_get_drawable_location(const DrawablePtr drawable);
 void glamor_get_drawable_deltas(DrawablePtr drawable, PixmapPtr pixmap,
                                 int *x, int *y);
@@ -919,10 +918,6 @@ int glamor_create_picture(PicturePtr picture);
 
 void glamor_set_window_pixmap(WindowPtr pWindow, PixmapPtr pPixmap);
 
-Bool glamor_prepare_access_picture(PicturePtr picture, glamor_access_t access);
-
-void glamor_finish_access_picture(PicturePtr picture);
-
 void glamor_destroy_picture(PicturePtr picture);
 
 /* fixup a fbo to the exact size as the pixmap. */
diff --git a/glamor/glamor_render.c b/glamor/glamor_render.c
index 5a7a23880..3d811cbb6 100644
--- a/glamor/glamor_render.c
+++ b/glamor/glamor_render.c
@@ -1586,15 +1586,6 @@ _glamor_composite(CARD8 op,
     RegionRec region;
     BoxPtr extent;
     int nbox, ok = FALSE;
-    PixmapPtr sub_dest_pixmap = NULL;
-    PixmapPtr sub_source_pixmap = NULL;
-    PixmapPtr sub_mask_pixmap = NULL;
-    int dest_x_off, dest_y_off, saved_dest_x, saved_dest_y;
-    int source_x_off, source_y_off, saved_source_x, saved_source_y;
-    int mask_x_off, mask_y_off, saved_mask_x, saved_mask_y;
-    DrawablePtr saved_dest_drawable;
-    DrawablePtr saved_source_drawable;
-    DrawablePtr saved_mask_drawable;
     int force_clip = 0;
 
     dest_pixmap_priv = glamor_get_pixmap_private(dest_pixmap);
@@ -1737,34 +1728,10 @@ _glamor_composite(CARD8 op,
          dest->pDrawable->width, dest->pDrawable->height,
          glamor_get_picture_location(dest));
 
-#define GET_SUB_PICTURE(p, access)		do {					\
-	glamor_get_drawable_deltas(p->pDrawable, p ##_pixmap,				\
-				   & p ##_x_off, & p ##_y_off);				\
-	sub_ ##p ##_pixmap = glamor_get_sub_pixmap(p ##_pixmap,				\
-					      x_ ##p + p ##_x_off + p->pDrawable->x,	\
-					      y_ ##p + p ##_y_off + p->pDrawable->y,	\
-					      width, height, access);			\
-	if (sub_ ##p ##_pixmap != NULL) {						\
-		saved_ ##p ##_drawable = p->pDrawable;					\
-		saved_ ##p ##_x = x_ ##p;						\
-		saved_ ##p ##_y = y_ ##p;						\
-		if (p->pCompositeClip)							\
-			pixman_region_translate (p->pCompositeClip,			\
-						 -p->pDrawable->x - x_ ##p,		\
-						 -p->pDrawable->y - y_ ##p);		\
-		p->pDrawable = &sub_ ##p ##_pixmap->drawable;				\
-		x_ ##p = 0;								\
-		y_ ##p = 0;								\
-	} } while(0)
-    GET_SUB_PICTURE(dest, GLAMOR_ACCESS_RW);
-    if (source->pDrawable && !source->transform)
-        GET_SUB_PICTURE(source, GLAMOR_ACCESS_RO);
-    if (mask && mask->pDrawable && !mask->transform)
-        GET_SUB_PICTURE(mask, GLAMOR_ACCESS_RO);
-
-    if (glamor_prepare_access_picture(dest, GLAMOR_ACCESS_RW) &&
-        glamor_prepare_access_picture(source, GLAMOR_ACCESS_RO) &&
-        glamor_prepare_access_picture(mask, GLAMOR_ACCESS_RO)) {
+    if (glamor_prepare_access_picture_box(dest, GLAMOR_ACCESS_RW, x_dest, y_dest, width, height) &&
+        glamor_prepare_access_picture_box(source, GLAMOR_ACCESS_RO, x_source, y_source, width, height) &&
+        glamor_prepare_access_picture_box(mask, GLAMOR_ACCESS_RO, x_mask, y_mask, width, height))
+    {
         fbComposite(op,
                     source, mask, dest,
                     x_source, y_source,
@@ -1774,25 +1741,6 @@ _glamor_composite(CARD8 op,
     glamor_finish_access_picture(source);
     glamor_finish_access_picture(dest);
 
-#define PUT_SUB_PICTURE(p, access)		do {				\
-	if (sub_ ##p ##_pixmap != NULL) {					\
-		x_ ##p = saved_ ##p ##_x;					\
-		y_ ##p = saved_ ##p ##_y;					\
-		p->pDrawable = saved_ ##p ##_drawable;				\
-		if (p->pCompositeClip)						\
-			pixman_region_translate (p->pCompositeClip,		\
-						 p->pDrawable->x + x_ ##p,	\
-						 p->pDrawable->y + y_ ##p);	\
-		glamor_put_sub_pixmap(sub_ ##p ##_pixmap, p ##_pixmap,		\
-				      x_ ##p + p ##_x_off + p->pDrawable->x,	\
-				      y_ ##p + p ##_y_off + p->pDrawable->y,	\
-				      width, height, access);			\
-	}} while(0)
-    if (mask && mask->pDrawable)
-        PUT_SUB_PICTURE(mask, GLAMOR_ACCESS_RO);
-    if (source->pDrawable)
-        PUT_SUB_PICTURE(source, GLAMOR_ACCESS_RO);
-    PUT_SUB_PICTURE(dest, GLAMOR_ACCESS_RW);
  done:
     return ret;
 }
diff --git a/glamor/glamor_utils.h b/glamor/glamor_utils.h
index 4c1581ef5..5a568f1c2 100644
--- a/glamor/glamor_utils.h
+++ b/glamor/glamor_utils.h
@@ -32,6 +32,8 @@
 #ifndef __GLAMOR_UTILS_H__
 #define __GLAMOR_UTILS_H__
 
+#include "glamor_prepare.h"
+
 #define v_from_x_coord_x(_xscale_, _x_)          ( 2 * (_x_) * (_xscale_) - 1.0)
 #define v_from_x_coord_y(_yscale_, _y_)          (-2 * (_y_) * (_yscale_) + 1.0)
 #define v_from_x_coord_y_inverted(_yscale_, _y_) (2 * (_y_) * (_yscale_) - 1.0)