mesa: add/update comments in _mesa_copy_buffer_subdata()

[mesa.git] / src / mesa / drivers / dri / i965 / brw_vtbl.c

diff --git a/src/mesa/drivers/dri/i965/brw_vtbl.c b/src/mesa/drivers/dri/i965/brw_vtbl.c
index d34880659e2c10b90783b24ded2cda93d31f14c0..be975d1c41b9d8c2ba932627cefb30ada58d8962 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_vtbl.c
+++ b/src/mesa/drivers/dri/i965/brw_vtbl.c
@@ -177,6 +177,12 @@ static void brw_new_batch( struct intel_context *intel )
 
    brw->state_batch_count = 0;
 
+   /* Gen7 needs to track what the real transform feedback vertex count was at
+    * the start of the batch, since the kernel will be resetting the offset to
+    * 0.
+    */
+   brw->sol.offset_0_batch_start = brw->sol.svbi_0_starting_index;
+
    brw->vb.nr_current_buffers = 0;
    brw->ib.type = -1;