diff options
author | Adam Jackson <ajax@nwnk.net> | 2006-01-18 19:42:56 +0000 |
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committer | Adam Jackson <ajax@nwnk.net> | 2006-01-18 19:42:56 +0000 |
commit | 1c3f8727b2349c9b988eaa744f11366322d42538 (patch) | |
tree | 11832cf6c4c993d2c01f63d0b75e904315690342 /fb/fbblt.c | |
parent | e70b64b93024d05519014fb1b76fe26bd9f3a496 (diff) |
More kdrive merge, fast path fbBlt to use memcpy() when possible. Good for
-5% to 60% speedup on XGetImage, and 0% to 10% speedup on copies within
host memory. Based on work by Jaymz Julian.
Diffstat (limited to 'fb/fbblt.c')
-rw-r--r-- | fb/fbblt.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/fb/fbblt.c b/fb/fbblt.c index c2617a718..e173b447c 100644 --- a/fb/fbblt.c +++ b/fb/fbblt.c @@ -77,6 +77,29 @@ fbBlt (FbBits *srcLine, return; } #endif + + if (alu == GXcopy && pm == FB_ALLONES && !reverse && + !(srcX & 7) && !(dstX & 7) && !(width & 7)) { + int i; + CARD8 *src = (CARD8 *) srcLine; + CARD8 *dst = (CARD8 *) dstLine; + + srcStride *= sizeof(FbBits); + dstStride *= sizeof(FbBits); + width >>= 3; + src += (srcX >> 3); + dst += (dstX >> 3); + + if (!upsidedown) + for (i = 0; i < height; i++) + memcpy(dst + i * dstStride, src + i * srcStride, width); + else + for (i = height - 1; i >= 0; i--) + memcpy(dst + i * dstStride, src + i * srcStride, width); + + return; + } + FbInitializeMergeRop(alu, pm); destInvarient = FbDestInvarientMergeRop(); if (upsidedown) |