virgl: encode index buffer offset.

Fixes arb_vertex_buffer_object-combined-vertex-index

Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/src/gallium/drivers/virgl/virgl_encode.c b/src/gallium/drivers/virgl/virgl_encode.c
index 3c8a0f4..ee68fe0 100644 (file)
--- a/src/gallium/drivers/virgl/virgl_encode.c
+++ b/src/gallium/drivers/virgl/virgl_encode.c
@@ -409,7 +409,7 @@ int virgl_encoder_set_index_buffer(struct virgl_context *ctx,
    virgl_encoder_write_res(ctx, res);
    if (ib) {
       virgl_encoder_write_dword(ctx->cbuf, ib->index_size);
-      virgl_encoder_write_dword(ctx->cbuf, 0);
+      virgl_encoder_write_dword(ctx->cbuf, ib->offset);
    }
    return 0;
 }