From 09278da69837dd3d9451a6c250cef5af1de72a47 Mon Sep 17 00:00:00 2001
From: "Lukas F. Hartmann" <lukas@mntre.com>
Date: Wed, 29 Jun 2022 20:58:35 +0200
Subject: [PATCH] gfx: fix NEOR minterm, contributed by tom w.
---
ZZ9000_proto.sdk/ZZ9000OS/src/gfx.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/ZZ9000_proto.sdk/ZZ9000OS/src/gfx.h b/ZZ9000_proto.sdk/ZZ9000OS/src/gfx.h
index e11c3ab..0936646 100644
--- a/ZZ9000_proto.sdk/ZZ9000OS/src/gfx.h
+++ b/ZZ9000_proto.sdk/ZZ9000OS/src/gfx.h
@@ -390,7 +390,7 @@ enum gfx_minterm_modes {
s &= d; \
SET_FG_PIXEL8_MASK(0); break; \
case MINTERM_NEOR: \
- d ^= (s & mask); break; \
+ d ^= ~(s & mask); break; \
case MINTERM_DST: /* This one does nothing. */ \
return; break; \
case MINTERM_NOTONLYSRC: \
@@ -466,9 +466,9 @@ enum gfx_minterm_modes {
case MINTERM_NEOR: \
switch (color_format) { \
case MNTVA_COLOR_16BIT565: \
- ((uint16_t *)d)[x] ^= (s & color_mask); break; \
+ ((uint16_t *)d)[x] ^= ~(s & color_mask); break; \
case MNTVA_COLOR_32BIT: \
- d[x] ^= (s & color_mask); break; \
+ d[x] ^= ~(s & color_mask); break; \
} break; \
case MINTERM_DST: /* This one does nothing. */ \
return; break; \
--
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