[Mesa-stable] [PATCH 2/2] i965: Listen to BRW_NEW_FRAGMENT_PROGRAM for 3DSTATE_PS_BLEND.

[Kenneth Graunke]

brw_color_buffer_write_enabled depends on brw->fragment_program, which
means we have to listen to BRW_NEW_FRAGMENT_PROGRAM.

On most generations, this was only called from a function that already
subscribed.  However, on Broadwell, we failed to listen to the necessary
event in the atom that emits 3DSTATE_PS_BLEND.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Cc: "10.2" <mesa-stable at lists.freedesktop.org>
---
 src/mesa/drivers/dri/i965/brw_wm_state.c     | 1 +
 src/mesa/drivers/dri/i965/gen8_blend_state.c | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

Not observed to actually fix anything, but hey, why not?

diff --git a/src/mesa/drivers/dri/i965/brw_wm_state.c b/src/mesa/drivers/dri/i965/brw_wm_state.c
index fbd605c..98b5185 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_state.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_state.c
@@ -45,6 +45,7 @@ bool
 brw_color_buffer_write_enabled(struct brw_context *brw)
 {
    struct gl_context *ctx = &brw->ctx;
+   /* BRW_NEW_FRAGMENT_PROGRAM */
    const struct gl_fragment_program *fp = brw->fragment_program;
    int i;
 
diff --git a/src/mesa/drivers/dri/i965/gen8_blend_state.c b/src/mesa/drivers/dri/i965/gen8_blend_state.c
index a02b765..9c5eedb 100644
--- a/src/mesa/drivers/dri/i965/gen8_blend_state.c
+++ b/src/mesa/drivers/dri/i965/gen8_blend_state.c
@@ -215,7 +215,7 @@ gen8_upload_ps_blend(struct brw_context *brw)
    /* _NEW_BUFFERS */
    struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
 
-   /* _NEW_BUFFERS | _NEW_COLOR */
+   /* BRW_NEW_FRAGMENT_PROGRAM | _NEW_BUFFERS | _NEW_COLOR */
    if (brw_color_buffer_write_enabled(brw))
       dw1 |= GEN8_PS_BLEND_HAS_WRITEABLE_RT;
 
@@ -290,7 +290,7 @@ gen8_upload_ps_blend(struct brw_context *brw)
 const struct brw_tracked_state gen8_ps_blend = {
    .dirty = {
       .mesa = _NEW_BUFFERS | _NEW_COLOR | _NEW_MULTISAMPLE,
-      .brw = BRW_NEW_CONTEXT,
+      .brw = BRW_NEW_CONTEXT | BRW_NEW_FRAGMENT_PROGRAM,
       .cache = 0,
    },
    .emit = gen8_upload_ps_blend
-- 
1.9.1