anv/gen7: Properly handle VS with VertexID but no vertices

diff --git a/src/vulkan/gen7_pipeline.c b/src/vulkan/gen7_pipeline.c
index 3622071ead29eae885d77b73cb0184d05edc0662..269d9d46ac5847dcda915afac5a69c8a85bb1bae 100644 (file)
--- a/src/vulkan/gen7_pipeline.c
+++ b/src/vulkan/gen7_pipeline.c
@@ -39,10 +39,11 @@ gen7_emit_vertex_input(struct anv_pipeline *pipeline,
    const uint32_t num_dwords = 1 + element_count * 2;
    uint32_t *p;
 
-   if (info->attributeCount > 0) {
-      p = anv_batch_emitn(&pipeline->batch, num_dwords,
-                          GEN7_3DSTATE_VERTEX_ELEMENTS);
-   }
+   if (info->attributeCount == 0 && !sgvs)
+      return;
+
+   p = anv_batch_emitn(&pipeline->batch, num_dwords,
+                       GEN7_3DSTATE_VERTEX_ELEMENTS);
 
    for (uint32_t i = 0; i < info->attributeCount; i++) {
       const VkVertexInputAttributeDescription *desc =