[g3dvl] use a vertex element instead of the instance id

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diff --git a/src/gallium/auxiliary/vl/vl_zscan.c b/src/gallium/auxiliary/vl/vl_zscan.c
index 2b52d610f8fff5187d1092fa46e4337a64e65437..58cee0070d8054c8bb5a9f151c2b6d032112d3b5 100644 (file)
--- a/src/gallium/auxiliary/vl/vl_zscan.c
+++ b/src/gallium/auxiliary/vl/vl_zscan.c
@@ -110,8 +110,7 @@ create_vert_shader(struct vl_zscan *zscan)
 
    vrect = ureg_DECL_vs_input(shader, VS_I_RECT);
    vpos = ureg_DECL_vs_input(shader, VS_I_VPOS);
-
-   block_num = ureg_DECL_system_value(shader, 0, TGSI_SEMANTIC_INSTANCEID, 0);
+   block_num = ureg_DECL_vs_input(shader, VS_I_BLOCK_NUM);
 
    tmp = ureg_DECL_temporary(shader);