+++ /dev/null
-diff --git a/src/cairo-clip.c b/src/cairo-clip.c
-diff --git a/src/cairo-color.c b/src/cairo-color.c
-index a348839..0688167 100644
---- a/src/cairo-color.c
-+++ b/src/cairo-color.c
-@@ -159,3 +159,10 @@ _cairo_color_get_rgba_premultiplied (cai
- *blue = color->blue * color->alpha;
- *alpha = color->alpha;
- }
-+
-+cairo_bool_t
-+_cairo_color_equal (cairo_color_t *color_a,
-+ cairo_color_t *color_b)
-+{
-+ return (memcmp (color_a, color_b, sizeof (cairo_color_t)) == 0);
-+}
-diff --git a/src/cairo-directfb-surface.c b/src/cairo-directfb-surface.c
-index 686510d..96ee212 100644
---- a/src/cairo-directfb-surface.c
-+++ b/src/cairo-directfb-surface.c
-@@ -1514,6 +1514,15 @@ _cairo_directfb_surface_show_glyphs ( vo
- }
- #endif /* DFB_SHOW_GLYPHS */
-
-+static cairo_bool_t
-+_cairo_directfb_surface_is_compatible (void *surface_a,
-+ void *surface_b)
-+{
-+ cairo_directfb_surface_t *a = (cairo_directfb_surface_t*) surface_a;
-+ cairo_directfb_surface_t *b = (cairo_directfb_surface_t*) surface_b;
-+
-+ return (a->dfb == b->dfb);
-+}
-
- static cairo_surface_backend_t cairo_directfb_surface_backend = {
- CAIRO_SURFACE_TYPE_DIRECTFB, /*type*/
-@@ -1564,7 +1573,8 @@ #if DFB_SHOW_GLYPHS
- #else
- NULL, /* show_glyphs */
- #endif
-- NULL /* snapshot */
-+ NULL, /* snapshot */
-+ _cairo_directfb_is_compatible
- };
-
-
-diff --git a/src/cairo-ft-font.c b/src/cairo-ft-font.c
-diff --git a/src/cairo-glitz-surface.c b/src/cairo-glitz-surface.c
-index f492739..79e0162 100644
---- a/src/cairo-glitz-surface.c
-+++ b/src/cairo-glitz-surface.c
-@@ -1799,6 +1799,19 @@ _cairo_glitz_surface_scaled_glyph_fini (
- }
- }
-
-+static cairo_bool_t
-+_cairo_glitz_surface_is_compatible (void *surface_a,
-+ void *surface_b)
-+{
-+ cairo_glitz_surface_t *a = (cairo_glitz_surface_t*) surface_a;
-+ cairo_glitz_surface_t *b = (cairo_glitz_surface_t*) surface_b;
-+
-+ glitz_drawable *drawable_a = glitz_surface_get_drawable (a->surface);
-+ glitz_drawable *drawable_b = glitz_surface_get_drawable (b->surface);
-+
-+ return (drawable_a == drawable_b);
-+}
-+
- #define FIXED_TO_FLOAT(f) (((glitz_float_t) (f)) / 65536)
-
- static cairo_status_t
-@@ -2194,7 +2207,16 @@ static const cairo_surface_backend_t cai
- _cairo_glitz_surface_flush,
- NULL, /* mark_dirty_rectangle */
- _cairo_glitz_surface_scaled_font_fini,
-- _cairo_glitz_surface_scaled_glyph_fini
-+ _cairo_glitz_surface_scaled_glyph_fini,
-+
-+ NULL, /* paint */
-+ NULL, /* mask */
-+ NULL, /* stroke */
-+ NULL, /* fill */
-+ NULL, /* show_glyphs */
-+
-+ NULL, /* snapshot */
-+ _cairo_glitz_surface_is_compatible
- };
-
- static const cairo_surface_backend_t *
-diff --git a/src/cairo-gstate.c b/src/cairo-gstate.c
-diff --git a/src/cairo-meta-surface.c b/src/cairo-meta-surface.c
-diff --git a/src/cairo-pattern.c b/src/cairo-pattern.c
-index b488d1f..28f8561 100644
---- a/src/cairo-pattern.c
-+++ b/src/cairo-pattern.c
-@@ -1020,6 +1020,8 @@ _cairo_pattern_acquire_surface_for_gradi
- return status;
- }
-
-+#define MAX_CACHE_SIZE 16
-+
- static cairo_int_status_t
- _cairo_pattern_acquire_surface_for_solid (cairo_solid_pattern_t *pattern,
- cairo_surface_t *dst,
-@@ -1030,12 +1032,59 @@ _cairo_pattern_acquire_surface_for_solid
- cairo_surface_t **out,
- cairo_surface_attributes_t *attribs)
- {
-- *out = _cairo_surface_create_similar_solid (dst,
-- CAIRO_CONTENT_COLOR_ALPHA,
-- 1, 1,
-- &pattern->color);
-- if ((*out)->status)
-- return CAIRO_STATUS_NO_MEMORY;
-+ /* We have a small cache here, because we don't want to constantly
-+ * recreate surfaces for simple solid colors */
-+ static struct {
-+ cairo_color_t color;
-+ cairo_surface_t *surface;
-+ } cache[MAX_CACHE_SIZE];
-+ static int cache_size = 0;
-+ static int i = 0;
-+ CAIRO_MUTEX_DECLARE (cache_lock);
-+
-+ cairo_surface_t *surface;
-+ cairo_status_t status;
-+
-+ CAIRO_MUTEX_LOCK (cache_lock);
-+
-+ /* Check cache first */
-+ if (i < cache_size)
-+ if (_cairo_color_equal (&cache[i].color, &pattern->color) &&
-+ _cairo_surface_is_compatible (cache[i].surface, dst))
-+ goto DONE;
-+
-+ for (i = 0; i < cache_size; i++)
-+ if (_cairo_color_equal (&cache[i].color, &pattern->color) &&
-+ _cairo_surface_is_compatible (cache[i].surface, dst))
-+ goto DONE;
-+
-+ /* Not cached, need to create new */
-+ surface = _cairo_surface_create_similar_solid (dst,
-+ CAIRO_CONTENT_COLOR_ALPHA,
-+ 1, 1,
-+ &pattern->color);
-+ if (surface->status) {
-+ status = CAIRO_STATUS_NO_MEMORY;
-+
-+ goto UNLOCK;
-+ }
-+
-+ /* Cache new */
-+ if (cache_size < MAX_CACHE_SIZE)
-+ cache_size++;
-+ else {
-+ i = rand () % MAX_CACHE_SIZE;
-+
-+ /* Evict old */
-+ cairo_surface_destroy (cache[i].surface);
-+ }
-+
-+ cache[i].color = pattern->color;
-+ cache[i].surface = surface;
-+
-+DONE:
-+
-+ *out = cairo_surface_reference (cache[i].surface);
-
- attribs->x_offset = attribs->y_offset = 0;
- cairo_matrix_init_identity (&attribs->matrix);
-@@ -1043,7 +1092,13 @@ _cairo_pattern_acquire_surface_for_solid
- attribs->filter = CAIRO_FILTER_NEAREST;
- attribs->acquired = FALSE;
-
-- return CAIRO_STATUS_SUCCESS;
-+ status = CAIRO_STATUS_SUCCESS;
-+
-+UNLOCK:
-+
-+ CAIRO_MUTEX_UNLOCK (cache_lock);
-+
-+ return status;
- }
-
- /**
-diff --git a/src/cairo-scaled-font.c b/src/cairo-scaled-font.c
-diff --git a/src/cairo-surface-fallback.c b/src/cairo-surface-fallback.c
-diff --git a/src/cairo-surface.c b/src/cairo-surface.c
-index 2bff0da..78cad9b 100644
---- a/src/cairo-surface.c
-+++ b/src/cairo-surface.c
-@@ -1078,6 +1078,32 @@ _cairo_surface_snapshot (cairo_surface_t
- return _cairo_surface_fallback_snapshot (surface);
- }
-
-+/**
-+ * _cairo_surface_is_compatible
-+ * @surface_a: a #cairo_surface_t
-+ * @surface_b: a #cairo_surface_t
-+ *
-+ * Find out whether the given surfaces share the same backend,
-+ * and if so, whether they can be considered compatible.
-+ *
-+ * The definition of "compatible" depends on the backend. In the
-+ * xlib case, it means the surfaces share the same display.
-+ *
-+ * Return value: TRUE if the surfaces are compatible.
-+ **/
-+cairo_bool_t
-+_cairo_surface_is_compatible (cairo_surface_t *surface_a,
-+ cairo_surface_t *surface_b)
-+{
-+ if (surface_a->backend != surface_b->backend)
-+ return FALSE;
-+
-+ if (surface_a->backend->is_compatible)
-+ return surface_a->backend->is_compatible (surface_a, surface_b);
-+
-+ return TRUE;
-+}
-+
- cairo_status_t
- _cairo_surface_composite (cairo_operator_t op,
- cairo_pattern_t *src,
-diff --git a/src/cairo-win32-surface.c b/src/cairo-win32-surface.c
-index be7e706..81eb916 100644
---- a/src/cairo-win32-surface.c
-+++ b/src/cairo-win32-surface.c
-@@ -1609,6 +1609,16 @@ _cairo_win32_surface_show_glyphs (void
- return (win_result) ? CAIRO_STATUS_SUCCESS : CAIRO_INT_STATUS_UNSUPPORTED;
- }
-
-+static cairo_bool_t
-+_cairo_win32_surface_is_compatible (void *surface_a,
-+ void *surface_b)
-+{
-+ cairo_win32_surface_t *a = (cairo_win32_surface_t*) surface_a;
-+ cairo_win32_surface_t *b = (cairo_win32_surface_t*) surface_b;
-+
-+ return (a->dc == b->dc);
-+}
-+
- #undef STACK_GLYPH_SIZE
-
- /**
-@@ -1879,7 +1889,8 @@ static const cairo_surface_backend_t cai
- NULL, /* fill */
- _cairo_win32_surface_show_glyphs,
-
-- NULL /* snapshot */
-+ NULL, /* snapshot */
-+ _cairo_win32_surface_is_compatible
- };
-
- /*
-diff --git a/src/cairo-xcb-surface.c b/src/cairo-xcb-surface.c
-index 2fdf8a1..8df859d 100644
---- a/src/cairo-xcb-surface.c
-+++ b/src/cairo-xcb-surface.c
-@@ -1578,6 +1578,10 @@ _cairo_xcb_surface_show_glyphs (void
- int num_glyphs,
- cairo_scaled_font_t *scaled_font);
-
-+static cairo_bool_t
-+_cairo_xcb_surface_is_compatible (void *surface_a,
-+ void *surface_b);
-+
- /* XXX: move this to the bottom of the file, XCB and Xlib */
-
- static const cairo_surface_backend_t cairo_xcb_surface_backend = {
-@@ -1609,7 +1613,8 @@ static const cairo_surface_backend_t cai
- NULL, /* stroke */
- NULL, /* fill */
- _cairo_xcb_surface_show_glyphs,
-- NULL /* snapshot */
-+ NULL, /* snapshot */
-+ _cairo_xcb_surface_is_compatible
- };
-
- /**
-@@ -2451,3 +2456,13 @@ _cairo_xcb_surface_show_glyphs (void
-
- return status;
- }
-+
-+static cairo_bool_t
-+_cairo_xcb_surface_is_compatible (void *surface_a,
-+ void *surface_b)
-+{
-+ cairo_xcb_surface_t *a = (cairo_xcb_surface_t*) surface_a;
-+ cairo_xcb_surface_t *b = (cairo_xcb_surface_t*) surface_b;
-+
-+ return (a->dpy == b->dpy);
-+}
-diff --git a/src/cairo-xlib-surface.c b/src/cairo-xlib-surface.c
-index 6a0d3e4..9228c95 100644
---- a/src/cairo-xlib-surface.c
-+++ b/src/cairo-xlib-surface.c
-@@ -74,6 +74,10 @@ _cairo_xlib_surface_show_glyphs (void
- int num_glyphs,
- cairo_scaled_font_t *scaled_font);
-
-+static cairo_bool_t
-+_cairo_xlib_surface_is_compatible (void *surface_a,
-+ void *surface_b);
-+
- /*
- * Instead of taking two round trips for each blending request,
- * assume that if a particular drawable fails GetImage that it will
-@@ -1783,7 +1787,8 @@ static const cairo_surface_backend_t cai
- NULL, /* stroke */
- NULL, /* fill */
- _cairo_xlib_surface_show_glyphs,
-- NULL /* snapshot */
-+ NULL, /* snapshot */
-+ _cairo_xlib_surface_is_compatible
- };
-
- /**
-@@ -2913,3 +2918,13 @@ _cairo_xlib_surface_show_glyphs (void
-
- return status;
- }
-+
-+static cairo_bool_t
-+_cairo_xlib_surface_is_compatible (void *surface_a,
-+ void *surface_b)
-+{
-+ cairo_xlib_surface_t *a = (cairo_xlib_surface_t*) surface_a;
-+ cairo_xlib_surface_t *b = (cairo_xlib_surface_t*) surface_b;
-+
-+ return (a->dpy == b->dpy);
-+}
-diff --git a/src/cairo.c b/src/cairo.c
-diff --git a/src/cairoint.h b/src/cairoint.h
-index 060b988..01c0e2a 100755
---- a/src/cairoint.h
-+++ b/src/cairoint.h
-@@ -933,6 +933,10 @@ struct _cairo_surface_backend {
-
- cairo_surface_t *
- (*snapshot) (void *surface);
-+
-+ cairo_bool_t
-+ (*is_compatible) (void *surface_a,
-+ void *surface_b);
- };
-
- typedef struct _cairo_format_masks {
-@@ -1497,6 +1501,10 @@ _cairo_color_get_rgba_premultiplied (cai
- double *blue,
- double *alpha);
-
-+cairo_private cairo_bool_t
-+_cairo_color_equal (cairo_color_t *color_a,
-+ cairo_color_t *color_b);
-+
- /* cairo-font.c */
-
- cairo_private void
-@@ -1922,6 +1930,10 @@ _cairo_surface_clone_similar (cairo_surf
- cairo_private cairo_surface_t *
- _cairo_surface_snapshot (cairo_surface_t *surface);
-
-+cairo_private cairo_bool_t
-+_cairo_surface_is_compatible (cairo_surface_t *surface_a,
-+ cairo_surface_t *surface_b);
-+
- cairo_private unsigned int
- _cairo_surface_get_current_clip_serial (cairo_surface_t *surface);
-
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