C fast path for scaled src_x888_8888 with nearest filter

The necessity is justified by a message in the pixman mailing list:
  http://lists.freedesktop.org/archives/pixman/2011-July/001330.html

NONE repeat is not supported, but could be added by tweaking
the interpretation and making use of 'fully_transparent_src'
scanline function argument.

diff --git a/pixman/pixman-fast-path.c b/pixman/pixman-fast-path.c
index 3c05383..9a6919e 100644 (file)
--- a/pixman/pixman-fast-path.c
+++ b/pixman/pixman-fast-path.c
@@ -1174,6 +1174,9 @@ FAST_NEAREST (8888_8888_cover, 8888, 8888, uint32_t, uint32_t, SRC, COVER)
 FAST_NEAREST (8888_8888_none, 8888, 8888, uint32_t, uint32_t, SRC, NONE)
 FAST_NEAREST (8888_8888_pad, 8888, 8888, uint32_t, uint32_t, SRC, PAD)
 FAST_NEAREST (8888_8888_normal, 8888, 8888, uint32_t, uint32_t, SRC, NORMAL)
+FAST_NEAREST (x888_8888_cover, x888, 8888, uint32_t, uint32_t, SRC, COVER)
+FAST_NEAREST (x888_8888_pad, x888, 8888, uint32_t, uint32_t, SRC, PAD)
+FAST_NEAREST (x888_8888_normal, x888, 8888, uint32_t, uint32_t, SRC, NORMAL)
 FAST_NEAREST (8888_8888_cover, 8888, 8888, uint32_t, uint32_t, OVER, COVER)
 FAST_NEAREST (8888_8888_none, 8888, 8888, uint32_t, uint32_t, OVER, NONE)
 FAST_NEAREST (8888_8888_pad, 8888, 8888, uint32_t, uint32_t, OVER, PAD)
@@ -1716,6 +1719,13 @@ static const pixman_fast_path_t c_fast_paths[] =
 
     SIMPLE_NEAREST_FAST_PATH (SRC, r5g6b5, r5g6b5, 565_565),
 
+    SIMPLE_NEAREST_FAST_PATH_COVER (SRC, x8r8g8b8, a8r8g8b8, x888_8888),
+    SIMPLE_NEAREST_FAST_PATH_COVER (SRC, x8b8g8r8, a8b8g8r8, x888_8888),
+    SIMPLE_NEAREST_FAST_PATH_PAD (SRC, x8r8g8b8, a8r8g8b8, x888_8888),
+    SIMPLE_NEAREST_FAST_PATH_PAD (SRC, x8b8g8r8, a8b8g8r8, x888_8888),
+    SIMPLE_NEAREST_FAST_PATH_NORMAL (SRC, x8r8g8b8, a8r8g8b8, x888_8888),
+    SIMPLE_NEAREST_FAST_PATH_NORMAL (SRC, x8b8g8r8, a8b8g8r8, x888_8888),
+
     SIMPLE_NEAREST_FAST_PATH (OVER, a8r8g8b8, x8r8g8b8, 8888_8888),
     SIMPLE_NEAREST_FAST_PATH (OVER, a8b8g8r8, x8b8g8r8, 8888_8888),
     SIMPLE_NEAREST_FAST_PATH (OVER, a8r8g8b8, a8r8g8b8, 8888_8888),

diff --git a/pixman/pixman-fast-path.h b/pixman/pixman-fast-path.h
index e94591a..2b55c2e 100644 (file)
--- a/pixman/pixman-fast-path.h
+++ b/pixman/pixman-fast-path.h
@@ -157,6 +157,7 @@ pad_repeat_get_scanline_bounds (int32_t         source_image_width,
  /* This is not actually used since we don't have an OVER with
     565 source, but it is needed to build. */
 #define GET_0565_ALPHA(s) 0xff
+#define GET_x888_ALPHA(s) 0xff
 
 #define FAST_NEAREST_SCANLINE(scanline_func_name, SRC_FORMAT, DST_FORMAT,                      \
                              src_type_t, dst_type_t, OP, repeat_mode)                          \

diff --git a/pixman/pixman-private.h b/pixman/pixman-private.h
index 65494c9..6a3935e 100644 (file)
--- a/pixman/pixman-private.h
+++ b/pixman/pixman-private.h
@@ -763,6 +763,7 @@ pixman_region16_copy_from_region32 (pixman_region16_t *dst,
 
 /* Trivial versions that are useful in macros */
 #define CONVERT_8888_TO_8888(s) (s)
+#define CONVERT_x888_TO_8888(s) ((s) | 0xff000000)
 #define CONVERT_0565_TO_0565(s) (s)
 
 #define PIXMAN_FORMAT_IS_WIDE(f)                                       \