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-rw-r--r--src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp
index 10be41b1803..2f4306ab581 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_gs_visitor.cpp
@@ -626,7 +626,8 @@ brw_compile_gs(const struct brw_compiler *compiler, void *log_data,
shader = brw_postprocess_nir(shader, compiler->devinfo, is_scalar);
prog_data->include_primitive_id =
- (shader->info->inputs_read & VARYING_BIT_PRIMITIVE_ID) != 0;
+ (shader->info->inputs_read & VARYING_BIT_PRIMITIVE_ID) ||
+ (shader->info->system_values_read & (1 << SYSTEM_VALUE_PRIMITIVE_ID));
prog_data->invocations = shader->info->gs.invocations;