From 417cf3d35e06e559c81c31a1a48dee809417946c Mon Sep 17 00:00:00 2001
From: Boris Brezillon <boris.brezillon@collabora.com>
Date: Fri, 1 Oct 2021 09:13:26 +0200
Subject: [PATCH] panvk: No-op zero-vertex draws

Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15295>
---
 src/panfrost/vulkan/panvk_vX_cmd_buffer.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/panfrost/vulkan/panvk_vX_cmd_buffer.c b/src/panfrost/vulkan/panvk_vX_cmd_buffer.c
index 6e2baf4d0d3..f75030c5edc 100644
--- a/src/panfrost/vulkan/panvk_vX_cmd_buffer.c
+++ b/src/panfrost/vulkan/panvk_vX_cmd_buffer.c
@@ -889,6 +889,9 @@ panvk_per_arch(CmdDraw)(VkCommandBuffer commandBuffer,
 {
    VK_FROM_HANDLE(panvk_cmd_buffer, cmdbuf, commandBuffer);
 
+   if (instanceCount == 0 || vertexCount == 0)
+      return;
+
    struct panvk_batch *batch = cmdbuf->state.batch;
    struct panvk_cmd_bind_point_state *bind_point_state =
       panvk_cmd_get_bind_point_state(cmdbuf, GRAPHICS);