From d3f876097fa088bf759f539892e31bed12f8d5c1 Mon Sep 17 00:00:00 2001
From: Sebastian Krzyszkowiak <dos@dosowisko.net>
Date: Sun, 7 May 2017 01:30:22 +0200
Subject: [PATCH] add CreateNotPreservedBitmap helper

---
 src/utils.c | 8 ++++++++
 src/utils.h | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/src/utils.c b/src/utils.c
index ef2ad0f..bdd1334 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -402,3 +402,11 @@ SYMBOL_EXPORT void WindowCoordsToViewport(struct Game *game, int *x, int *y) {
 	*x /= clipWidth / (float)game->viewport.width;
 	*y /= clipHeight / (float)game->viewport.height;
 }
+
+SYMBOL_EXPORT ALLEGRO_BITMAP* CreateNotPreservedBitmap(int width, int height) {
+	int flags = al_get_new_bitmap_flags();
+	al_add_new_bitmap_flag(ALLEGRO_NO_PRESERVE_TEXTURE);
+	ALLEGRO_BITMAP *bitmap = al_create_bitmap(width, height);
+	al_set_new_bitmap_flags(flags);
+	return bitmap;
+}
diff --git a/src/utils.h b/src/utils.h
index b8abf4e..1638226 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -71,4 +71,6 @@ void FatalError(struct Game *game, bool exit, char* format, ...);
 void SetupViewport(struct Game *game, struct Viewport config);
 
 void WindowCoordsToViewport(struct Game *game, int *x, int *y);
+
+ALLEGRO_BITMAP* CreateNotPreservedBitmap(int width, int height);
 #endif