diff options
| author |  djsollen@google.com <djsollen@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2013-08-20 20:28:03 +0000 |
|---|---|---|
| committer | djsollen@google.com <djsollen@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2013-08-20 20:28:03 +0000 |
| commit | 2b343cc2557aa7921fa8b04bf6800ebf37af186b (patch) | |
| tree | 75b7dfa6d6a2de0d3b141b7def078151348244e9 | |
| parent | 6364b5edc3adb4ec0b26e507a474a2066977c509 (diff) | |
create a macro for testing if skcolor and skpmcolor have same shift values
R=reed@google.com
Review URL: https://codereview.chromium.org/22799015
git-svn-id: http://skia.googlecode.com/svn/trunk@10838 2bbb7eff-a529-9590-31e7-b0007b416f81
| -rw-r--r-- | include/core/SkPostConfig.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/core/SkPostConfig.h b/include/core/SkPostConfig.h index 4a819d369a..0c2358aeb8 100644 --- a/include/core/SkPostConfig.h +++ b/include/core/SkPostConfig.h @@ -207,6 +207,14 @@ #endif /** + * SkColor has well defined shift values, but SkPMColor is configurable. This + * macro is a convenience that returns true if the shift values are equal while + * ignoring the machine's endianness. + */ +#define SK_COLOR_MATCHES_PMCOLOR_BYTE_ORDER \ + (SK_A32_SHIFT == 24 && SK_R32_SHIFT == 16 && SK_G32_SHIFT == 8 && SK_B32_SHIFT == 0) + +/** * SK_PMCOLOR_BYTE_ORDER can be used to query the byte order of SkPMColor at compile time. The * relationship between the byte order and shift values depends on machine endianness. If the shift * order is R=0, G=8, B=16, A=24 then ((char*)&pmcolor)[0] will produce the R channel on a little |