vbo: fix attr reset

In bc4e0c4 (vbo: Use a bitmask to track the active arrays in vbo_exec*.)
we stopped looping over all the attributes and resetting all slots.
Which exposed an issue in vbo_exec_bind_arrays() for handling GENERIC0
vs. POS.

Split out a helper which can reset a particular slot, so that
vbo_exec_bind_arrays() can re-use it to reset POS.

This fixes an issue with 0ad (and possibly others).

Signed-off-by: Rob Clark <[email protected]>
Reviewed-by: Mathias Fröhlich <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mesa/vbo/vbo_exec_draw.c b/src/mesa/vbo/vbo_exec_draw.c
index 8d1b2c08d27..0ef30819e22 100644
--- a/src/mesa/vbo/vbo_exec_draw.c
+++ b/src/mesa/vbo/vbo_exec_draw.c
@@ -213,7 +213,7 @@ vbo_exec_bind_arrays( struct gl_context *ctx )
          exec->vtx.inputs[VERT_ATTRIB_GENERIC0] = exec->vtx.inputs[0];
          exec->vtx.attrsz[VERT_ATTRIB_GENERIC0] = exec->vtx.attrsz[0];
          exec->vtx.attrptr[VERT_ATTRIB_GENERIC0] = exec->vtx.attrptr[0];
-         exec->vtx.attrsz[0] = 0;
+         vbo_reset_attr(exec, VERT_ATTRIB_POS);
          exec->vtx.enabled &= (~BITFIELD64_BIT(VBO_ATTRIB_POS));
          exec->vtx.enabled |= BITFIELD64_BIT(VBO_ATTRIB_GENERIC0);
       }