From 276e43bad96799ae902957a247aae6c7d44ff975 Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Tue, 15 Jan 2008 22:10:35 +0100
Subject: [PATCH] more big endian fixes (overlays on minimaps)

---
 src/sim/g_map.c        | 93 ++++++++++++++++++------------------------
 src/sim/headers/view.h |  1 +
 src/sim/w_x.c          |  1 +
 3 files changed, 41 insertions(+), 54 deletions(-)

diff --git a/src/sim/g_map.c b/src/sim/g_map.c
index 87c7e27..667cfae 100644
--- a/src/sim/g_map.c
+++ b/src/sim/g_map.c
@@ -406,25 +406,15 @@ drawRect(SimView *view, int pixel, int solid,
 	unsigned char *image = 
 	  &data[(line * y) + (x * pixelBytes)];
 
-	if (solid) {
-	  for (i = h; i > 0; i--) {
-	    for (j = w; j > 0; j--) {
+	for (i = h; i > 0; i--) {
+	  for (j = w; j > 0; j--) {
+	    if (solid || stipple++ & 1)
 	      *image = pixel;
-	      image++;
-	    }
-	    image += line - w;
-	  }
-	} else {
-	  for (i = h; i > 0; i--) {
-	    for (j = w; j > 0; j--) {
-	      if (stipple++ & 1)
-		*image = pixel;
-	      image++;
-	    }
-	    if (!(w & 1))
-	      stipple++;
-	    image += line - w;
+	    image++;
 	  }
+	  if (!(w & 1))
+	    stipple++;
+	  image += line - w;
 	}
       }
       break;
@@ -438,26 +428,22 @@ drawRect(SimView *view, int pixel, int solid,
 	image = 
 	  &data[(line * y) + x];
 
-	if (solid) {
-	  for (i = h; i > 0; i--) {
-	    for (j = w; j > 0; j--) {
-	      *image = pixel;
-	      image++;
-	    }
-	    image += line - w;
-	  }
-	} else {
-	  for (i = h; i > 0; i--) {
-	    for (j = w; j > 0; j--) {
-	      if (stipple++ & 1)
-		*image = pixel;
-	      image++;
+	for (i = h; i > 0; i--) {
+	  for (j = w; j > 0; j--) {
+	    if (solid || stipple++ & 1) {
+	      if (view->x->x_big_endian) {
+	        *image = ((pixel & 0xff) << 8) | ((pixel & 0xff00) >> 8);
+	      } else {
+	        *image = pixel;
+	      }
 	    }
-	    if (!(w & 1))
-	      stipple++;
-	    image += line - w;
+	    image++;
 	  }
+	  if (!(w & 1))
+	    stipple++;
+	  image += line - w;
 	}
+
       }
       break;
 
@@ -470,37 +456,36 @@ drawRect(SimView *view, int pixel, int solid,
 	image = 
 	  &data[(line * y) + x * pixelBytes];
 
-	if (solid) {
-	  for (i = h; i > 0; i--) {
-	    for (j = w; j > 0; j--) {
-	      *(image++) = (pixel >> 0) & 0xff;
-	      *(image++) = (pixel >> 8) & 0xff;
-	      *(image++) = (pixel >> 16) & 0xff;
+	for (i = h; i > 0; i--) {
+	  for (j = w; j > 0; j--) {
+	    if (view->x->x_big_endian) {
 	      if (pixelBytes == 4) {
 	        image++;
 	      }
-	    }
-	    image += line - w * pixelBytes;
-	  }
-	} else {
-	  for (i = h; i > 0; i--) {
-	    for (j = w; j > 0; j--) {
+	      if (solid || stipple++ & 1) {
+	        *(image++) = (pixel >> 16) & 0xff;
+	        *(image++) = (pixel >> 8) & 0xff;
+	        *(image++) = (pixel >> 0) & 0xff;
+	      } else {
+	        image += 3;
+	      }
+	    } else {
 	      if (stipple++ & 1) {
-		*(image++) = (pixel >> 0) & 0xff;
-		*(image++) = (pixel >> 8) & 0xff;
-		*(image++) = (pixel >> 16) & 0xff;
+	        *(image++) = (pixel >> 0) & 0xff;
+	        *(image++) = (pixel >> 8) & 0xff;
+	        *(image++) = (pixel >> 16) & 0xff;
 	      } else {
 	        image += 3;
 	      }
 	      if (pixelBytes == 4) {
-		image++;
+	        image++;
 	      }
 	    }
-	    if (!(w & 1)) {
-	      stipple++;
-	    }
-	    image += line - w * pixelBytes;
 	  }
+	  if (!(w & 1)) {
+	    stipple++;
+	  }
+	  image += line - w * pixelBytes;
 	}
       }
       break;
diff --git a/src/sim/headers/view.h b/src/sim/headers/view.h
index 8f87fe0..744e0b3 100644
--- a/src/sim/headers/view.h
+++ b/src/sim/headers/view.h
@@ -114,6 +114,7 @@ typedef struct XDisplay {
   Pixmap horiz_stipple;
   Pixmap diag_stipple;
   int needs_swap;
+  int x_big_endian;
 } XDisplay;
 
 
diff --git a/src/sim/w_x.c b/src/sim/w_x.c
index 3d8dd48..e32aeed 100644
--- a/src/sim/w_x.c
+++ b/src/sim/w_x.c
@@ -601,6 +601,7 @@ InitNewView(SimView *view, char *title, int class, int w, int h)
   }
 
   view->x->needs_swap = !(*(unsigned char*) (&test));
+  view->x->x_big_endian = (ImageByteOrder(view->x->dpy) == MSBFirst);
 
 
   GetPixmaps(view->x);
-- 
2.39.5