intel: Replace sprinkled intel_batchbuffer_flush with MI_FLUSH or nothing.

Most of these were to ensure that caches got synchronized between 2d (or meta)
rendering and later use of the target as a source, such as for texture
miptree setup.  Those are replaced with intel_batchbuffer_emit_mi_flush(),
which just drops an MI_FLUSH.  Most of the remainder were to ensure that
REFERENCES_CLIPRECTS batchbuffers got flushed before the lock was dropped.
Those are now replaced by automatically flushing those when dropping the lock.

1 files changed, 0 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/i915/intel_pixel_read.c b/src/mesa/drivers/dri/i915/intel_pixel_read.c
index 0b95421a25..72e1f9ed28 100644
--- a/src/mesa/drivers/dri/i915/intel_pixel_read.c
+++ b/src/mesa/drivers/dri/i915/intel_pixel_read.c
@@ -272,8 +272,6 @@ do_blit_readpixels(GLcontext * ctx,
                            rect.x2 - rect.x1, rect.y2 - rect.y1,
 			   GL_COPY);
       }
-
-      intel_batchbuffer_flush(intel->batch);
    }
    UNLOCK_HARDWARE(intel);