SDL: Add more endian-specific aliases for 32 bit pixelformats

SDL Commits
1 
From 666f81bace6765420aaba3aa06013e07ea9f9e65 Mon Sep 17 00:00:00 2001
From: Starbuck5 <[EMAIL REDACTED]>
Date: Tue, 25 Jul 2023 21:54:56 -0700
Subject: [PATCH] Add more endian-specific aliases for 32 bit pixelformats

Add these for all the RGBX variants, just like all the RGBA variants already have.
---
 include/SDL3/SDL_pixels.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/SDL3/SDL_pixels.h b/include/SDL3/SDL_pixels.h
index 75f8234c5943..7fc636be7a5e 100644
--- a/include/SDL3/SDL_pixels.h
+++ b/include/SDL3/SDL_pixels.h
@@ -263,11 +263,19 @@ typedef enum
     SDL_PIXELFORMAT_ARGB32 = SDL_PIXELFORMAT_ARGB8888,
     SDL_PIXELFORMAT_BGRA32 = SDL_PIXELFORMAT_BGRA8888,
     SDL_PIXELFORMAT_ABGR32 = SDL_PIXELFORMAT_ABGR8888,
+    SDL_PIXELFORMAT_RGBX32 = SDL_PIXELFORMAT_RGBX8888,
+    SDL_PIXELFORMAT_XRGB32 = SDL_PIXELFORMAT_XRGB8888,
+    SDL_PIXELFORMAT_BGRX32 = SDL_PIXELFORMAT_BGRX8888,
+    SDL_PIXELFORMAT_XBGR32 = SDL_PIXELFORMAT_XBGR8888,
 #else
     SDL_PIXELFORMAT_RGBA32 = SDL_PIXELFORMAT_ABGR8888,
     SDL_PIXELFORMAT_ARGB32 = SDL_PIXELFORMAT_BGRA8888,
     SDL_PIXELFORMAT_BGRA32 = SDL_PIXELFORMAT_ARGB8888,
     SDL_PIXELFORMAT_ABGR32 = SDL_PIXELFORMAT_RGBA8888,
+    SDL_PIXELFORMAT_RGBX32 = SDL_PIXELFORMAT_XBGR8888,
+    SDL_PIXELFORMAT_XRGB32 = SDL_PIXELFORMAT_BGRX8888,
+    SDL_PIXELFORMAT_BGRX32 = SDL_PIXELFORMAT_XRGB8888,
+    SDL_PIXELFORMAT_XBGR32 = SDL_PIXELFORMAT_RGBX8888,
 #endif
 
     SDL_PIXELFORMAT_YV12 =      /**< Planar mode: Y + V + U  (3 planes) */