draw: make sure constant buffer data is aligned before passing to aos.c

1 files changed, 18 insertions, 1 deletions

diff --git a/src/gallium/auxiliary/draw/draw_vs.c b/src/gallium/auxiliary/draw/draw_vs.c
index a8b6d0c90d..ce35112fc1 100644
--- a/src/gallium/auxiliary/draw/draw_vs.c
+++ b/src/gallium/auxiliary/draw/draw_vs.c
@@ -43,8 +43,22 @@
 
 
 void draw_vs_set_constants( struct draw_context *draw,
-                            const float (*constants)[4] )
+                            const float (*constants)[4],
+                            unsigned size )
 {
+   if (((unsigned)constants) & 0xf) {
+      if (size > draw->vs.const_storage_size) {
+         if (draw->vs.aligned_constant_storage)
+            align_free(draw->vs.aligned_constant_storage);
+         draw->vs.aligned_constant_storage = align_malloc( size, 16 );
+      }
+      memcpy( draw->vs.aligned_constant_storage,
+              constants, 
+              size );
+      constants = draw->vs.aligned_constant_storage;
+   }
+      
+   draw->vs.aligned_constants = constants;
    draw_vs_aos_machine_constants( draw->vs.aos_machine, constants );
 }
 
@@ -159,6 +173,9 @@ draw_vs_destroy( struct draw_context *draw )
    if (draw->vs.aos_machine)
       draw_vs_aos_machine_destroy(draw->vs.aos_machine);
 
+   if (draw->vs.aligned_constant_storage)
+      align_free(draw->vs.aligned_constant_storage);
+
    tgsi_exec_machine_free_data(&draw->vs.machine);
 
 }