diff options
Diffstat (limited to 'src/mesa/drivers/dri/i915tex/intel_buffers.c')
| -rw-r--r-- | src/mesa/drivers/dri/i915tex/intel_buffers.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/src/mesa/drivers/dri/i915tex/intel_buffers.c b/src/mesa/drivers/dri/i915tex/intel_buffers.c index 5eb2a8e5d0..9f1b25ef38 100644 --- a/src/mesa/drivers/dri/i915tex/intel_buffers.c +++ b/src/mesa/drivers/dri/i915tex/intel_buffers.c @@ -253,19 +253,25 @@ intelWindowMoved(struct intel_context *intel) pf_active ? "" : "in"); if (pf_active) { - int i; - /* Sync pages between pipes if we're flipping on both at the same time */ - for (i = 0; i < 2 && pf_pipes != intel_fb->pf_pipes && - intel_fb->pf_pipes == 0x3 && - (intel->sarea->pf_current_page & 0x3) != - ((intel->sarea->pf_current_page) >> 2 & 0x3); i++) { - drm_i915_flip_t flip; - - flip.pipes = (intel_fb->pf_current_page == - (intel->sarea->pf_current_page & 0x3)) ? 0x2 : 0x1; - - drmCommandWrite(intel->driFd, DRM_I915_FLIP, &flip, sizeof(flip)); + if (pf_pipes == 0x3 && pf_pipes != intel_fb->pf_pipes && + (intel->sarea->pf_current_page & 0x3) != + (((intel->sarea->pf_current_page) >> 2) & 0x3)) { + if (intel_fb->pf_current_page == + (intel->sarea->pf_current_page & 0x3)) { + /* XXX: This is ugly, but emitting two flips 'in a row' can cause + * lockups for unknown reasons. + */ + intel->sarea->pf_current_page = + intel->sarea->pf_current_page & 0x3; + intel->sarea->pf_current_page |= + intel->sarea->pf_current_page << 2; + } else { + intel->sarea->pf_current_page = + intel->sarea->pf_current_page & (0x3 << 2); + intel->sarea->pf_current_page |= + intel->sarea->pf_current_page >> 2; + } } intel_fb->pf_pipes = pf_pipes; |