From 0b5266ff648b03b3f2beda9838598abc00c4f7b2 Mon Sep 17 00:00:00 2001 From: Owain Ainsworth Date: Wed, 21 Jan 2009 21:57:24 +0000 Subject: [PATCH] intel: fix vblank crtc selection with DRI1 when only one pipe is enabled. On Mobile chipsets, we often enable PipeB instead of PipeA, but the test in here was insufficient, falling back to pipe A if the area intersection returned zero. Therefore, in the case where a window went off to the top of the left of the screen, it would freeze, waiting on the wrong vblank. Fix this mess by checking the sarea for a crtc being zero sized, and in that case always default to the other one. --- src/mesa/drivers/dri/intel/intel_buffers.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/src/mesa/drivers/dri/intel/intel_buffers.c b/src/mesa/drivers/dri/intel/intel_buffers.c index 08e10c9e0ef..81e718bb3d6 100644 --- a/src/mesa/drivers/dri/intel/intel_buffers.c +++ b/src/mesa/drivers/dri/intel/intel_buffers.c @@ -195,6 +195,14 @@ intelWindowMoved(struct intel_context *intel) intel->intelScreen->driScrnPriv->ddx_version.minor >= 7) { GLuint flags = intelFixupVblank(intel, dPriv); + /* Do the stupid test: Is one of them actually disabled? + */ + if (sarea->planeA_w == 0 || sarea->planeA_h == 0) { + flags = dPriv->vblFlags | VBLANK_FLAG_SECONDARY; + } else if (sarea->planeB_w == 0 || sarea->planeB_h == 0) { + flags = dPriv->vblFlags & ~VBLANK_FLAG_SECONDARY; + } + /* Check to see if we changed pipes */ if (flags != dPriv->vblFlags && dPriv->vblFlags && !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ)) { -- 2.30.2