From bb46fa5745d3555e1ecfbe8ea34e32d513324f17 Mon Sep 17 00:00:00 2001
From: bjorn <mail@bjornbyt.es>
Date: Sun, 4 Dec 2022 17:59:22 -0800
Subject: [PATCH] Pass:line copies tables of vectors to vertices better;

Using vec3_init writes 4 floats which can, extremely rarely, go past the
end of the vertex buffer.
---
 src/api/l_graphics_pass.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/api/l_graphics_pass.c b/src/api/l_graphics_pass.c
index 4996e104..bd165122 100644
--- a/src/api/l_graphics_pass.c
+++ b/src/api/l_graphics_pass.c
@@ -558,9 +558,10 @@ static void luax_readvertices(lua_State* L, int index, float* vertices, uint32_t
       } else if (innerType == LUA_TUSERDATA || innerType == LUA_TLIGHTUSERDATA) {
         for (uint32_t i = 0; i < count; i++) {
           lua_rawgeti(L, index, i + 1);
-          vec3_init(vertices, luax_checkvector(L, -1, V_VEC3, NULL));
-          lua_pop(L, 1);
+          float* v = luax_checkvector(L, -1, V_VEC3, NULL);
+          memcpy(vertices, v, 3 * sizeof(float));
           vertices += 3;
+          lua_pop(L, 1);
         }
       }
       break;