intel: Buffered upload

Rather than performing lots of little writes to update the common bo
upon each update, write those into a static buffer and flush that when
full (or at the end of the batch). Doing so gives a dramatic performance
improvement over and above using mmaped access.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 2 insertions, 5 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_batchbuffer.c b/src/mesa/drivers/dri/intel/intel_batchbuffer.c
index 28bf42e770..5564e3ea2c 100644
--- a/src/mesa/drivers/dri/intel/intel_batchbuffer.c
+++ b/src/mesa/drivers/dri/intel/intel_batchbuffer.c
@@ -27,6 +27,7 @@
 
 #include "intel_context.h"
 #include "intel_batchbuffer.h"
+#include "intel_buffer_objects.h"
 #include "intel_decode.h"
 #include "intel_reg.h"
 #include "intel_bufmgr.h"
@@ -175,11 +176,7 @@ _intel_batchbuffer_flush(struct intel_batchbuffer *batch, const char *file,
    if (intel->vtbl.finish_batch)
       intel->vtbl.finish_batch(intel);
 
-   if (intel->upload.bo) {
-      drm_intel_bo_unreference(intel->upload.bo);
-      intel->upload.bo = NULL;
-      intel->upload.offset = 0;
-   }
+   intel_upload_finish(intel);
 
    /* Check that we didn't just wrap our batchbuffer at a bad time. */
    assert(!intel->no_batch_wrap);