From 477ed722beca0b0bd560306ca8a904cc5414fca4 Mon Sep 17 00:00:00 2001
From: Cameron Cawley <ccawley2011@gmail.com>
Date: Wed, 13 May 2026 18:37:07 +0100
Subject: [PATCH] Add fast paths for BGR555 and BGR565 normal blits

---
 src/video/SDL_blit_N.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/video/SDL_blit_N.c b/src/video/SDL_blit_N.c
index b014d4233a..1766edc9d7 100644
--- a/src/video/SDL_blit_N.c
+++ b/src/video/SDL_blit_N.c
@@ -2998,6 +2998,14 @@ static const struct blit_table normal_blit_2[] = {
       0, Blit_RGB565_RGBA8888, NO_ALPHA | COPY_ALPHA | SET_ALPHA },
     { 0x0000F800, 0x000007E0, 0x0000001F, 4, 0x0000FF00, 0x00FF0000, 0xFF000000,
       0, Blit_RGB565_BGRA8888, NO_ALPHA | COPY_ALPHA | SET_ALPHA },
+    { 0x0000001F, 0x000007E0, 0x0000F800, 4, 0x000000FF, 0x0000FF00, 0x00FF0000,
+      0, Blit_RGB565_ARGB8888, NO_ALPHA | COPY_ALPHA | SET_ALPHA },
+    { 0x0000001F, 0x000007E0, 0x0000F800, 4, 0x00FF0000, 0x0000FF00, 0x000000FF,
+      0, Blit_RGB565_ABGR8888, NO_ALPHA | COPY_ALPHA | SET_ALPHA },
+    { 0x0000001F, 0x000007E0, 0x0000F800, 4, 0x0000FF00, 0x00FF0000, 0xFF000000,
+      0, Blit_RGB565_RGBA8888, NO_ALPHA | COPY_ALPHA | SET_ALPHA },
+    { 0x0000001F, 0x000007E0, 0x0000F800, 4, 0xFF000000, 0x00FF0000, 0x0000FF00,
+      0, Blit_RGB565_BGRA8888, NO_ALPHA | COPY_ALPHA | SET_ALPHA },
 #endif
     // Default for 16-bit RGB source, used if no other blitter matches
     { 0, 0, 0, 0, 0, 0, 0, 0, BlitNtoN, 0 }
@@ -3077,8 +3085,12 @@ static const struct blit_table normal_blit_4[] = {
     // RGB 888 and RGB 565
     { 0x00FF0000, 0x0000FF00, 0x000000FF, 2, 0x0000F800, 0x000007E0, 0x0000001F,
       0, Blit_XRGB8888_RGB565, NO_ALPHA },
+    { 0x000000FF, 0x0000FF00, 0x00FF0000, 2, 0x0000001F, 0x000007E0, 0x0000F800,
+      0, Blit_XRGB8888_RGB565, NO_ALPHA },
     { 0x00FF0000, 0x0000FF00, 0x000000FF, 2, 0x00007C00, 0x000003E0, 0x0000001F,
       0, Blit_XRGB8888_RGB555, NO_ALPHA },
+    { 0x000000FF, 0x0000FF00, 0x00FF0000, 2, 0x0000001F, 0x000003E0, 0x00007C00,
+      0, Blit_XRGB8888_RGB555, NO_ALPHA },
     // Default for 32-bit RGB source, used if no other blitter matches
     { 0, 0, 0, 0, 0, 0, 0, 0, BlitNtoN, 0 }
 };