i915g: Improve flushing using heuristics.

1 files changed, 17 insertions, 1 deletions

diff --git a/src/gallium/drivers/i915/i915_batch.h b/src/gallium/drivers/i915/i915_batch.h
index ce2691b2fd7..a1f8bcae802 100644
--- a/src/gallium/drivers/i915/i915_batch.h
+++ b/src/gallium/drivers/i915/i915_batch.h
@@ -29,6 +29,7 @@
 #define I915_BATCH_H
 
 #include "i915_batchbuffer.h"
+#include "i915_context.h"
 
 
 #define BEGIN_BATCH(dwords) \
@@ -49,11 +50,26 @@
 #define FLUSH_BATCH(fence) \
    i915_flush(i915, fence)
 
-
 /************************************************************************
  * i915_flush.c
  */
 void i915_flush(struct i915_context *i915, struct pipe_fence_handle **fence);
 
+/*
+ * Flush if the current color buf is idle and we have more than 256 vertices
+ * queued, or if the current color buf is busy and we have more than 4096
+ * vertices queued.
+ */
+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)) )
+      FLUSH_BATCH(NULL);
+}
+
 
 #endif