From 56028a888efd2735a687bbfaf22902a1f867d3f2 Mon Sep 17 00:00:00 2001
From: Konstantin Seurer <konstantin.seurer@gmail.com>
Date: Sun, 5 May 2024 14:48:11 +0200
Subject: [PATCH] lavapipe: Do not allocate 0 sized buffers for descriptor sets

This will crash the new llvmpipe allocation mechanism.

Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29408>
---
 src/gallium/frontends/lavapipe/lvp_descriptor_set.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/gallium/frontends/lavapipe/lvp_descriptor_set.c b/src/gallium/frontends/lavapipe/lvp_descriptor_set.c
index 1f41069bc42..5f11be08f69 100644
--- a/src/gallium/frontends/lavapipe/lvp_descriptor_set.c
+++ b/src/gallium/frontends/lavapipe/lvp_descriptor_set.c
@@ -336,6 +336,8 @@ lvp_descriptor_set_create(struct lvp_device *device,
    for (unsigned i = 0; i < layout->binding_count; i++)
       bo_size += layout->binding[i].uniform_block_size;
 
+   bo_size = MAX2(bo_size, 64);
+
    struct pipe_resource template = {
       .bind = PIPE_BIND_CONSTANT_BUFFER,
       .screen = device->pscreen,