From: Francisco Jerez <currojerez@riseup.net>
Date: Wed, 23 Dec 2015 16:44:59 +0000 (+0200)
Subject: i965: Add state bit to trigger re-emission of color calculator state.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=22ac1f692228d8c44155bfa637c8e34356c7e0b7;p=mesa.git

i965: Add state bit to trigger re-emission of color calculator state.

This will be used on Gen8+ to make sure that the color calculator
state pointers are re-emitted when switching back to the 3D pipeline
after some GPGPU workload due to a hardware workaround.  There are
other state bits already defined that could be used to achieve the
same effect but they all cause a ton of unrelated state to be
re-emitted (e.g. BRW_NEW_STATE_BASE_ADDRESS), so just define a new
one, state bits are cheap.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
---

diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index 7b0340fc2ab..b80db00eb75 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -221,6 +221,7 @@ enum brw_state_id {
    BRW_STATE_COMPUTE_PROGRAM,
    BRW_STATE_CS_WORK_GROUPS,
    BRW_STATE_URB_SIZE,
+   BRW_STATE_CC_STATE,
    BRW_NUM_STATE_BITS
 };
 
@@ -309,6 +310,7 @@ enum brw_state_id {
 #define BRW_NEW_COMPUTE_PROGRAM         (1ull << BRW_STATE_COMPUTE_PROGRAM)
 #define BRW_NEW_CS_WORK_GROUPS          (1ull << BRW_STATE_CS_WORK_GROUPS)
 #define BRW_NEW_URB_SIZE                (1ull << BRW_STATE_URB_SIZE)
+#define BRW_NEW_CC_STATE                (1ull << BRW_STATE_CC_STATE)
 
 struct brw_state_flags {
    /** State update flags signalled by mesa internals */
diff --git a/src/mesa/drivers/dri/i965/brw_state_upload.c b/src/mesa/drivers/dri/i965/brw_state_upload.c
index 2a671a58d8c..876e130f1cd 100644
--- a/src/mesa/drivers/dri/i965/brw_state_upload.c
+++ b/src/mesa/drivers/dri/i965/brw_state_upload.c
@@ -664,6 +664,7 @@ static struct dirty_bit_map brw_bits[] = {
    DEFINE_BIT(BRW_NEW_COMPUTE_PROGRAM),
    DEFINE_BIT(BRW_NEW_CS_WORK_GROUPS),
    DEFINE_BIT(BRW_NEW_URB_SIZE),
+   DEFINE_BIT(BRW_NEW_CC_STATE),
    {0, 0, 0}
 };
 
diff --git a/src/mesa/drivers/dri/i965/gen6_cc.c b/src/mesa/drivers/dri/i965/gen6_cc.c
index 3bab8f46ae8..cee139b7fd4 100644
--- a/src/mesa/drivers/dri/i965/gen6_cc.c
+++ b/src/mesa/drivers/dri/i965/gen6_cc.c
@@ -298,6 +298,7 @@ const struct brw_tracked_state gen6_color_calc_state = {
       .mesa = _NEW_COLOR |
               _NEW_STENCIL,
       .brw = BRW_NEW_BATCH |
+             BRW_NEW_CC_STATE |
              BRW_NEW_STATE_BASE_ADDRESS,
    },
    .emit = gen6_upload_color_calc_state,