From 688ea2eb9b251c73c78a8b60c8d5800730927be2 Mon Sep 17 00:00:00 2001
From: blueswir1 <blueswir1@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Thu, 24 Jul 2008 11:26:38 +0000
Subject: [PATCH] Fix 24 bit mode

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4937 c046a42c-6fe2-441c-8c8c-71466251a162
---
 hw/tcx.c | 23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

diff --git a/hw/tcx.c b/hw/tcx.c
index df02ea74e2..52a56c2c33 100644
--- a/hw/tcx.c
+++ b/hw/tcx.c
@@ -124,19 +124,34 @@ static void tcx_draw_line8(TCXState *s1, uint8_t *d,
     }
 }
 
+/*
+  XXX Could be much more optimal:
+  * detect if line/page/whole screen is in 24 bit mode
+  * if destination is also BGR, use memcpy
+  */
 static inline void tcx24_draw_line32(TCXState *s1, uint8_t *d,
                                      const uint8_t *s, int width,
                                      const uint32_t *cplane,
                                      const uint32_t *s24)
 {
-    int x;
-    uint8_t val;
+    int x, bgr, r, g, b;
+    uint8_t val, *p8;
     uint32_t *p = (uint32_t *)d;
     uint32_t dval;
 
+    bgr = s1->ds->bgr;
     for(x = 0; x < width; x++, s++, s24++) {
-        if ((bswap32(*cplane++) & 0xff000000) == 0x03000000) { // 24-bit direct
-            dval = bswap32(*s24) & 0x00ffffff;
+        if ((be32_to_cpu(*cplane++) & 0xff000000) == 0x03000000) {
+            // 24-bit direct, BGR order
+            p8 = (uint8_t *)s24;
+            p8++;
+            b = *p8++;
+            g = *p8++;
+            r = *p8++;
+            if (bgr)
+                dval = rgb_to_pixel32bgr(r, g, b);
+            else
+                dval = rgb_to_pixel32(r, g, b);
         } else {
             val = *s;
             dval = s1->palette[val];
-- 
GitLab