Add _cairo_gstate_restore_external_state, _cairo_fixed_integer_floor and _cairo_fixed_integer_ceil.

Call _cairo_gstate_restore_external_state on restore.
Fix cache-misses.
Implement floor and ceil
Restore surface clip region on restroe.
(_calculate_region_for_intermediate_clip_surface), (_cairo_gstate_clip_and_composite_trapezoids), (_cairo_gstate_show_surface), (_cairo_gstate_show_glyphs): Create intermediate clip surfaces of the minimal required size.

1 files changed, 18 insertions, 0 deletions

diff --git a/src/cairo-fixed.c b/src/cairo-fixed.c
index 32368d7fc..ee31718ef 100644
--- a/src/cairo-fixed.c
+++ b/src/cairo-fixed.c
@@ -71,3 +71,21 @@ _cairo_fixed_integer_part (cairo_fixed_t f)
 {
     return f >> 16;
 }
+
+int
+_cairo_fixed_integer_floor (cairo_fixed_t f)
+{
+    if (f >= 0)
+	return f >> 16;
+    else
+	return -((-f - 1) >> 16) - 1;
+}
+
+int
+_cairo_fixed_integer_ceil (cairo_fixed_t f)
+{
+    if (f >= 0)
+	return ((f - 1)>>16) + 1;
+    else
+	return - (-f >> 16);
+}