# SDL: render: constified some local variables in SDL\_AllocateRenderVertices.

**URL:** <https://discourse.libsdl.org/t/sdl-render-constified-some-local-variables-in-sdl-allocaterendervertices/32822>\
**Category:** SDL Commits\
**Created:** [September 19, 2021, 4:40am UTC](https://discourse.libsdl.org/t/sdl-render-constified-some-local-variables-in-sdl-allocaterendervertices/32822 "2021-09-19T04:40:02Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![SDLPushPostBot](https://discourse.libsdl.org/user_avatar/discourse.libsdl.org/sdlpushpostbot/32/4370_2.png) [@SDLPushPostBot](https://discourse.libsdl.org/u/SDLPushPostBot)\
**Post date:** [September 19, 2021, 4:40am UTC](https://discourse.libsdl.org/t/sdl-render-constified-some-local-variables-in-sdl-allocaterendervertices/32822/1 "2021-09-19T04:40:03Z")

</div>

> <https://github.com/libsdl-org/SDL/commit/857cc7c0c93f003dbfc5fed7a87de907fffb2a1b>

```diff
From 857cc7c0c93f003dbfc5fed7a87de907fffb2a1b Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Sun, 19 Sep 2021 00:05:21 -0400
Subject: [PATCH] render: constified some local variables in
 SDL_AllocateRenderVertices.

---
 src/render/SDL_render.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/render/SDL_render.c b/src/render/SDL_render.c
index b0b3ad700f..7db35dd7b6 100644
--- a/src/render/SDL_render.c
+++ b/src/render/SDL_render.c
@@ -287,10 +287,10 @@ void *
 SDL_AllocateRenderVertices(SDL_Renderer *renderer, const size_t numbytes, const size_t alignment, size_t *offset)
 {
     const size_t needed = renderer->vertex_data_used + numbytes + alignment;
- size_t current_offset = renderer->vertex_data_used;
+ const size_t current_offset = renderer->vertex_data_used;
 
- size_t aligner = (alignment && ((current_offset & (alignment - 1)) != 0)) ? (alignment - (current_offset & (alignment - 1))) : 0;
- size_t aligned = current_offset + aligner;
+ const size_t aligner = (alignment && ((current_offset & (alignment - 1)) != 0)) ? (alignment - (current_offset & (alignment - 1))) : 0;
+ const size_t aligned = current_offset + aligner;
 
     if (renderer->vertex_data_allocation < needed) {
         const size_t current_allocation = renderer->vertex_data ? renderer->vertex_data_allocation : 1024;

```