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i965: Move brw_emit_query_begin() to the render ring prelude.

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Without hardware contexts, the pipeline statistics registers are
free-running and include data from every 3D application running.

In order to find out the contributions of one particular context, we
need to take a snapshot at the start and end of each batch.

Previously, we emitted the PIPE_CONTROL necessary to capture
PS_DEPTH_COUNT when drawing primitives.  Special tracking ensured it
happened only on the first draw of the batch, rather than on every draw.

Moving this to brw_new_batch increases symmetry, since the final
snapshot has always been in brw_finish_batch, which is just a few lines
below.  It should be basically equivalent.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Kenneth Graunke 2013-10-15 19:32:53 -07:00
parent bb9d2eab89
commit a4bf7f6b6e
2 changed files with 8 additions and 2 deletions
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2
src/mesa/drivers/dri/i965/brw_draw_upload.c
View file

@ -614,8 +614,6 @@ static void brw_emit_vertices(struct brw_context *brw)
brw_prepare_vertices(brw);
brw_emit_query_begin(brw);
nr_elements = brw->vb.nr_enabled + brw->vs.prog_data->uses_vertexid;
/* If the VS doesn't read any inputs (calculating vertex position from

8
src/mesa/drivers/dri/i965/intel_batchbuffer.c
View file

@ -182,6 +182,11 @@ do_batch_dump(struct brw_context *brw)
void
intel_batchbuffer_emit_render_ring_prelude(struct brw_context *brw)
{
/* Without hardware contexts, we need to capture the pipeline statistics
* registers at the start and end of each render ring batch, so we can see
* what that batch contributed. Emit state packets to write them to a BO.
*/
brw_emit_query_begin(brw);
}
/**
@ -234,6 +239,9 @@ brw_new_batch(struct brw_context *brw)
static void
brw_finish_batch(struct brw_context *brw)
{
/* Capture the closing pipeline statistics register values necessary to
* support query objects (in the non-hardware context world).
*/
brw_emit_query_end(brw);
if (brw->curbe.curbe_bo) {