When rendering to a texture with BaseLevel set, the miptree may be laid out such that BaseLevel is in level 0 of the miptree (to avoid wasting memory on unused levels between 0 and BaseLevel-1). In that case, we have to shift our render target's level down to the appropriate level of the smaller miptree.
The WebGL test in combination with a meta code relating to glGenerateMipmap also triggered a similar failure scenario. This GPU hang regression was introduced by c754f7a8. Bugzilla: http://bugs.freedesktop.org/show_bug.cgi?id=65324 Signed-off-by: Jordan Justen <[email protected]> Cc: Eric Anholt <[email protected]> Cc: Kenneth Graunke <[email protected]> Cc: Paul Berry <[email protected]> --- Given all of Eric's help, this is probably more his patch than mine... :) src/mesa/drivers/dri/i965/gen7_wm_surface_state.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c b/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c index 22ceaa5..620eafe 100644 --- a/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c +++ b/src/mesa/drivers/dri/i965/gen7_wm_surface_state.c @@ -595,7 +595,7 @@ gen7_update_renderbuffer_surface(struct brw_context *brw, assert(brw->has_surface_tile_offset); - surf[5] = irb->mt_level; + surf[5] = irb->mt_level - irb->mt->first_level; surf[2] = SET_FIELD(irb->mt->logical_width0 - 1, GEN7_SURFACE_WIDTH) | SET_FIELD(irb->mt->logical_height0 - 1, GEN7_SURFACE_HEIGHT); -- 1.7.10.4 _______________________________________________ mesa-dev mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-dev
