From a3ee42207aab77d93655a82fdcb32be38268b85f Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Wed, 25 Apr 2007 09:52:22 +1000 Subject: radeon: another attempt at fixing the mergedfb refresh rate This attempts to keep it inside the 32-bit limit when multiplying things out later in the randr tree. Let me know if I screwed this up.. --- src/radeon_mergedfb.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/src/radeon_mergedfb.c b/src/radeon_mergedfb.c index fa143cb2..abbc1606 100644 --- a/src/radeon_mergedfb.c +++ b/src/radeon_mergedfb.c @@ -215,8 +215,13 @@ RADEONCopyModeNLink(ScrnInfoPtr pScrn, DisplayModePtr dest, * extension to allow selecting among a number of modes whose merged result * looks identical but consists of different modes for CRT1 and CRT2 */ - mode->VRefresh = (float)((i->Clock * 1000.0 / i->HTotal / i->VTotal) * 100 + - (j->Clock * 1000.0 / j->HTotal / j->VTotal)); + { + float ref1, ref2; + ref1 = ((float)i->Clock * 100.0 / i->HTotal / i->VTotal) * 50.0; + ref2 = ((float)j->Clock * 100.0 / j->HTotal / j->VTotal) / 2.0; + + mode->VRefresh = (float) ref1 + ref2; + } mode->Clock = (int)(mode->VRefresh * 0.001 * mode->HTotal * mode->VTotal); -- cgit v1.2.3