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i915g: Improve the flush heuristic by using the previous frame's number of vertices.

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This commit is contained in:
Stéphane Marchesin 2011-08-23 18:44:36 -07:00
parent fdb62ef3f5
commit b97889f543
4 changed files with 18 additions and 6 deletions
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13
src/gallium/drivers/i915/i915_batch.h
View file

@ -64,11 +64,16 @@ static INLINE void i915_flush_heuristically(struct i915_context* i915,
int num_vertex)
{
struct i915_winsys *iws = i915->iws;
i915->vertices_since_last_flush += num_vertex;
if ( i915->vertices_since_last_flush > 4096
|| ( i915->vertices_since_last_flush > 256 &&
!iws->buffer_is_busy(iws, i915->current.cbuf_bo)) )
i915->queued_vertices += num_vertex;
/* fire if we have more than 1/20th of the last frame's vertices */
if (i915->queued_vertices > i915->last_fired_vertices / 20) {
FLUSH_BATCH(NULL);
i915->fired_vertices += i915->queued_vertices;
i915->queued_vertices = 0;
return;
}
}

3
src/gallium/drivers/i915/i915_clear.c
View file

@ -125,6 +125,9 @@ i915_clear_emit(struct pipe_context *pipe, unsigned buffers, const float *rgba,
* This is not required, just a heuristic
*/
FLUSH_BATCH(NULL);
i915->last_fired_vertices = i915->fired_vertices;
i915->fired_vertices = 0;
}
/**

5
src/gallium/drivers/i915/i915_context.h
View file

@ -264,7 +264,10 @@ struct i915_context {
struct util_slab_mempool transfer_pool;
struct util_slab_mempool texture_transfer_pool;
int vertices_since_last_flush;
/* state for tracking flushes */
int last_fired_vertices;
int fired_vertices;
int queued_vertices;
/** blitter/hw-clear */
struct blitter_context* blitter;

3
src/gallium/drivers/i915/i915_flush.c
View file

@ -77,5 +77,6 @@ void i915_flush(struct i915_context *i915, struct pipe_fence_handle **fence)
i915->static_dirty = ~0;
/* kernel emits flushes in between batchbuffers */
i915->flush_dirty = 0;
i915->vertices_since_last_flush = 0;
i915->fired_vertices += i915->queued_vertices;
i915->queued_vertices = 0;
}