From 4975a89f38199263d35fc2ed5d94d81d4850797b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Ol=C5=A1=C3=A1k?= <marek.olsak@amd.com>
Date: Mon, 25 Jan 2021 13:03:52 -0500
Subject: [PATCH] mesa: skip MultiDrawArrays with primcount == 0
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This is the only zero parameter that gallium can't handle.

Reviewed-by: Zoltán Böszörményi <zboszor@gmail.com>
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8798>
---
 src/mesa/main/draw.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/mesa/main/draw.c b/src/mesa/main/draw.c
index 52ebd4c1d2f..cd92c247fb8 100644
--- a/src/mesa/main/draw.c
+++ b/src/mesa/main/draw.c
@@ -830,6 +830,9 @@ _mesa_MultiDrawArrays(GLenum mode, const GLint *first,
        !_mesa_validate_MultiDrawArrays(ctx, mode, count, primcount))
       return;
 
+   if (primcount == 0)
+      return;
+
    struct pipe_draw_info info;
    struct pipe_draw_start_count *draw;