The lowering is incompatable with how the radeonsi backend works.
Fixes piglit test:
./bin/arb_shader_draw_parameters-basevertex vertexid-zerobased -auto
---
src/gallium/drivers/radeonsi/si_get.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/src/gallium/drivers/radeonsi/si_get.c
b/src/gallium/drivers/radeonsi/si_get.c
index 998ef8d268..e9657602f3 100644
--- a/src/gallium/drivers/radeonsi/si_get.c
+++ b/src/gallium/drivers/radeonsi/si_get.c
@@ -492,7 +492,6 @@ static int si_get_shader_param(struct pipe_screen* pscreen,
}
static const struct nir_shader_compiler_options nir_options = {
- .vertex_id_zero_based = true,
.lower_scmp = true,
.lower_flrp32 = true,
.lower_flrp64 = true,
--
2.14.3
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