[Bug 107223] [GEN9+] 50% perf drop in SynMark Fill* tests (E2E RBC gets disabled?)

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Aug 27 08:35:09 UTC 2018


--- Comment #8 from Kenneth Graunke <kenneth at whitecape.org> ---
Eero is spot on, I can confirm this.  OglFillPixel on my Skull Canyon (SKL
GT4e) improves from ~46 FPS to ~93 FPS with the following change on top of
master (partial revert of the cited commit):

diff --git a/src/mesa/drivers/dri/i965/intel_screen.c
index eaf5a3b9feb..19ddf2b4072 100644
--- a/src/mesa/drivers/dri/i965/intel_screen.c
+++ b/src/mesa/drivers/dri/i965/intel_screen.c
@@ -1333,9 +1333,6 @@ intel_query_dma_buf_modifiers(__DRIscreen *_screen, int
fourcc, int max,
    if (f == NULL)
       return false;

-   if (!intel_image_format_is_supported(&screen->devinfo, f))
-      return false;
    for (i = 0; i < ARRAY_SIZE(supported_modifiers); i++) {
       uint64_t modifier = supported_modifiers[i].modifier;
       if (!modifier_is_supported(&screen->devinfo, f, 0, modifier))

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