From: "Xiang, Haihao" <[email protected]>

Emit PIPELINE_SELECT twice and make sure the commands in
the first batch buffer have been done.

However I don't know why this works !!!

Signed-off-by: Xiang, Haihao <[email protected]>
---
 lib/rendercopy_gen8.c |   19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/lib/rendercopy_gen8.c b/lib/rendercopy_gen8.c
index 1a137dd..6eb1051 100644
--- a/lib/rendercopy_gen8.c
+++ b/lib/rendercopy_gen8.c
@@ -148,7 +148,8 @@ batch_copy(struct intel_batchbuffer *batch, const void 
*ptr, uint32_t size, uint
 
 static void
 gen6_render_flush(struct intel_batchbuffer *batch,
-                 drm_intel_context *context, uint32_t batch_end)
+               drm_intel_context *context, uint32_t batch_end,
+               int waiting)
 {
        int ret;
 
@@ -157,6 +158,11 @@ gen6_render_flush(struct intel_batchbuffer *batch,
                ret = drm_intel_gem_bo_context_exec(batch->bo, context,
                                                    batch_end, 0);
        assert(ret == 0);
+
+       if (waiting) {
+               dri_bo_map(batch->bo, 0);
+               dri_bo_unmap(batch->bo);
+       }
 }
 
 /* Mostly copy+paste from gen6, except height, width, pitch moved */
@@ -880,6 +886,15 @@ void gen8_render_copyfunc(struct intel_batchbuffer *batch,
 
        intel_batchbuffer_flush_with_context(batch, context);
 
+       /* I don't know why it works !!! */
+       batch->ptr = batch->buffer;
+       OUT_BATCH(GEN6_PIPELINE_SELECT | PIPELINE_SELECT_3D);
+       OUT_BATCH(MI_BATCH_BUFFER_END);
+       batch_end = batch_align(batch, 8);
+       assert(batch_end < BATCH_STATE_SPLIT);
+       gen6_render_flush(batch, context, batch_end, 1);
+       intel_batchbuffer_reset(batch);
+
        batch_align(batch, 8);
 
        batch->ptr = &batch->buffer[BATCH_STATE_SPLIT];
@@ -968,6 +983,6 @@ void gen8_render_copyfunc(struct intel_batchbuffer *batch,
 
        annotation_flush(&aub_annotations, batch);
 
-       gen6_render_flush(batch, context, batch_end);
+       gen6_render_flush(batch, context, batch_end, 0);
        intel_batchbuffer_reset(batch);
 }
-- 
1.7.9.5

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