[Mesa-dev] [PATCH 18/37] i965/gen6/gs: Make sure we complete the last primitive.

[Iago Toral Quiroga]

Just in case the GS algorithm does not call EndPrimitive() for the last
primitive produced. This is relevant only for non point outputs, since for
this we are already setting the PrimEnd flag on each vertex we emit.
---
 src/mesa/drivers/dri/i965/gen6_gs_visitor.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/gen6_gs_visitor.cpp b/src/mesa/drivers/dri/i965/gen6_gs_visitor.cpp
index 5123bd7..252e585 100644
--- a/src/mesa/drivers/dri/i965/gen6_gs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/gen6_gs_visitor.cpp
@@ -270,6 +270,19 @@ gen6_gs_visitor::emit_urb_write_opcode(bool complete, src_reg vertex,
 void
 gen6_gs_visitor::emit_thread_end()
 {
+   /* Make sure the current primitive is ended: we know it is not ended when
+    * first_vertex is not zero. This is only relevant for outputs other than
+    * points because in the point case we set PrimEnd on all vertices.
+    */
+   if (c->gp->program.OutputType != GL_POINTS) {
+      emit(CMP(dst_null_d(), this->first_vertex, 0u, BRW_CONDITIONAL_Z));
+      emit(IF(BRW_PREDICATE_NORMAL));
+      {
+         visit((ir_end_primitive *) NULL);
+      }
+      emit(BRW_OPCODE_ENDIF);
+   }
+
    /* Here we have to:
     * 1) Emit an FF_SYNC messsage to obtain an initial VUE handle.
     * 2) Loop over all buffered vertex data and write it to corresponding
-- 
1.9.1