diff options
| author | Mike Stroyan <[email protected]> | 2015-07-01 10:16:28 -0600 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2015-07-02 00:12:52 -0700 |
| commit | fe2b748a39ff676949fcefccf739aff967fc38c5 (patch) | |
| tree | 8b131589ff3fbdd8d24992b61cdfed50e4c50944 /src/mesa | |
| parent | 9d408a41a3ab2fe456ebf2f7af7bad8f6c4bca17 (diff) | |
i965: allocate at least 1 BLEND_STATE element
When there are no color buffer render targets, gen6 and gen7 still
use the first BLEND_STATE element to determine alpha test.
gen6_upload_blend_state was allocating zero elements when
ctx->Color.AlphaEnabled was false.
That left _3DSTATE_CC_STATE_POINTERS or _3DSTATE_BLEND_STATE_POINTERS
pointing to random data from some previous brw_state_batch().
That sometimes suppressed depth rendering when those bits
happened to mean COMPAREFUNC_NEVER.
This produced flickering shadows for dota2 reborn.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80500
Reviewed-by: Chris Forbes <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen6_cc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/gen6_cc.c b/src/mesa/drivers/dri/i965/gen6_cc.c index 2bfa271b527..2b76e241d1a 100644 --- a/src/mesa/drivers/dri/i965/gen6_cc.c +++ b/src/mesa/drivers/dri/i965/gen6_cc.c @@ -51,7 +51,7 @@ gen6_upload_blend_state(struct brw_context *brw) * with render target 0, which will reference BLEND_STATE[0] for * alpha test enable. */ - if (nr_draw_buffers == 0 && ctx->Color.AlphaEnabled) + if (nr_draw_buffers == 0) nr_draw_buffers = 1; size = sizeof(*blend) * nr_draw_buffers; |