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GEM: Don't emit an extra MI_FLUSH in the batch since GEM handles it.

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This commit is contained in:
Eric Anholt 2008-05-06 13:57:08 -07:00
parent 537bbe6dec
commit 96f52f089f
1 changed files with 15 additions and 15 deletions
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30
src/mesa/drivers/dri/intel/intel_batchbuffer.c
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@ -195,7 +195,7 @@ _intel_batchbuffer_flush(struct intel_batchbuffer *batch, const char *file,
int line)
{
struct intel_context *intel = batch->intel;
GLuint used = batch->ptr - batch->map;
GLuint used;
GLboolean was_locked = intel->locked;
if (used == 0)
@ -204,20 +204,20 @@ _intel_batchbuffer_flush(struct intel_batchbuffer *batch, const char *file,
if (INTEL_DEBUG & DEBUG_BATCH)
fprintf(stderr, "%s:%d: Batchbuffer flush with %db used\n", file, line,
used);
/* Add the MI_BATCH_BUFFER_END. Always add an MI_FLUSH - this is a
* performance drain that we would like to avoid.
*/
if (used & 4) {
((int *) batch->ptr)[0] = intel->vtbl.flush_cmd();
((int *) batch->ptr)[1] = 0;
((int *) batch->ptr)[2] = MI_BATCH_BUFFER_END;
used += 12;
}
else {
((int *) batch->ptr)[0] = intel->vtbl.flush_cmd();
((int *) batch->ptr)[1] = MI_BATCH_BUFFER_END;
used += 8;
}
/* Emit a flush if the bufmgr doesn't do it for us. */
if (!intel->ttm)
intel_batchbuffer_emit_dword(intel->batch, intel->vtbl.flush_cmd());
/* Round batchbuffer usage to 2 DWORDs. */
used = batch->ptr - batch->map;
if ((used & 4) == 0)
intel_batchbuffer_emit_dword(intel->batch, 0); /* noop */
/* Mark the end of the buffer. */
intel_batchbuffer_emit_dword(intel->batch, MI_BATCH_BUFFER_END);
used = batch->ptr - batch->map;
/* Workaround for recursive batchbuffer flushing: If the window is
* moved, we can get into a case where we try to flush during a