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i965: Introduce a "render ring prelude" hook.

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The new intel_batchbuffer_emit_render_ring_prelude() hook will be called
when switching from BLT or UNKNOWN_RING to RENDER_RING.  This provides a
place to emit state that should go at the start of each render ring
batch, with minimal overhead.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Kenneth Graunke 2013-10-28 20:10:40 -07:00
parent 395a32717d
commit bb9d2eab89
2 changed files with 10 additions and 0 deletions
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5
src/mesa/drivers/dri/i965/intel_batchbuffer.c
View file

@ -179,6 +179,11 @@ do_batch_dump(struct brw_context *brw)
}
}
void
intel_batchbuffer_emit_render_ring_prelude(struct brw_context *brw)
{
}
/**
* Called when starting a new batch buffer.
*/

5
src/mesa/drivers/dri/i965/intel_batchbuffer.h
View file

@ -24,6 +24,7 @@ extern "C" {
struct intel_batchbuffer;
void intel_batchbuffer_emit_render_ring_prelude(struct brw_context *brw);
void intel_batchbuffer_init(struct brw_context *brw);
void intel_batchbuffer_free(struct brw_context *brw);
void intel_batchbuffer_save_state(struct brw_context *brw);
@ -118,10 +119,14 @@ intel_batchbuffer_require_space(struct brw_context *brw, GLuint sz,
if (intel_batchbuffer_space(brw) < sz)
intel_batchbuffer_flush(brw);
enum brw_gpu_ring prev_ring = brw->batch.ring;
/* The intel_batchbuffer_flush() calls above might have changed
* brw->batch.ring to UNKNOWN_RING, so we need to set it here at the end.
*/
brw->batch.ring = ring;
if (unlikely(prev_ring == UNKNOWN_RING && ring == RENDER_RING))
intel_batchbuffer_emit_render_ring_prelude(brw);
}
static INLINE void