We should be able to safely set the framebuffer state without a
fragment shader bound. bind_ps_state will take care of updating the
necessary state bits later.
---
 src/gallium/drivers/r600/evergreen_state.c | 4 +++-
 src/gallium/drivers/r600/r600_state.c      | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/r600/evergreen_state.c 
b/src/gallium/drivers/r600/evergreen_state.c
index 83cb024..22de003 100644
--- a/src/gallium/drivers/r600/evergreen_state.c
+++ b/src/gallium/drivers/r600/evergreen_state.c
@@ -1822,7 +1822,9 @@ static void evergreen_set_framebuffer_state(struct 
pipe_context *ctx,
                rctx->db_misc_state.atom.dirty = true;
        }
 
-       evergreen_update_db_shader_control(rctx);
+       if (rctx->ps_shader) {
+               evergreen_update_db_shader_control(rctx);
+       }
 
        /* Calculate the CS size. */
        rctx->framebuffer.atom.num_dw = 4; /* SCISSOR */
diff --git a/src/gallium/drivers/r600/r600_state.c 
b/src/gallium/drivers/r600/r600_state.c
index b01ab9c..ee08de9 100644
--- a/src/gallium/drivers/r600/r600_state.c
+++ b/src/gallium/drivers/r600/r600_state.c
@@ -1662,7 +1662,9 @@ static void r600_set_framebuffer_state(struct 
pipe_context *ctx,
                rctx->alphatest_state.atom.dirty = true;
        }
 
-       r600_update_db_shader_control(rctx);
+       if (rctx->ps_shader) {
+               r600_update_db_shader_control(rctx);
+       }
 
        /* Calculate the CS size. */
        rctx->framebuffer.atom.num_dw =
-- 
1.8.1.2

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