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anv/batch_chain: Remove padding from the BO before emitting BUFFER_END

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This commit is contained in:
Jason Ekstrand 2016-01-15 15:59:58 -08:00
parent 67bf74f020
commit 6b64dddd71
1 changed files with 9 additions and 0 deletions
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9
src/vulkan/anv_batch_chain.c
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@ -649,6 +649,15 @@ anv_cmd_buffer_end_batch_buffer(struct anv_cmd_buffer *cmd_buffer)
struct anv_batch_bo *batch_bo = anv_cmd_buffer_current_batch_bo(cmd_buffer);
if (cmd_buffer->level == VK_COMMAND_BUFFER_LEVEL_PRIMARY) {
/* When we start a batch buffer, we subtract a certain amount of
* padding from the end to ensure that we always have room to emit a
* BATCH_BUFFER_START to chain to the next BO. We need to remove
* that padding before we end the batch; otherwise, we may end up
* with our BATCH_BUFFER_END in another BO.
*/
cmd_buffer->batch.end += GEN8_MI_BATCH_BUFFER_START_length * 4;
assert(cmd_buffer->batch.end == batch_bo->bo.map + batch_bo->bo.size);
anv_batch_emit(&cmd_buffer->batch, GEN7_MI_BATCH_BUFFER_END);
/* Round batch up to an even number of dwords. */