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Issue
18459008:
ARM Skia NEON patches - 13 - S32A_Opaque (Closed)
DescriptionARM Skia NEON patches - 13 - S32A_Opaque
Blitrow32: S32A_Opaque code cleaning and speed improvement
- the old way of calculating alpha doesn't seem to be used anymore,
so remove the remaining code
- adding prefetching allows to improve performance greatly in some
cases at the expense of a little trade-off:
+-------+-----------+------------+
| count | Cortex-A9 | Cortex-A15 |
+-------+-----------+------------+
| 1,2 | 0 | 0 |
+-------+-----------+------------+
| 4 | 0 | -3% |
+-------+-----------+------------+
| 8 | 0 | -4% |
+-------+-----------+------------+
| 16 | 0 | -5% |
+-------+-----------+------------+
| 64 | +14% | 0 |
+-------+-----------+------------+
| 256 | +14% | +12% |
+-------+-----------+------------+
| 1024 | +115% | +15% |
+-------+-----------+------------+
BUG=
Committed: http://code.google.com/p/skia/source/detail?r=10026
Patch Set 1 #
Total comments: 2
Patch Set 2 : Add the requested comment. #Messages
Total messages: 5 (0 generated)
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