From 5ed6a965e39051b5b28a33f0fc14045565afc627 Mon Sep 17 00:00:00 2001
From: Simon Howard
Date: Sat, 24 Sep 2005 23:41:07 +0000
Subject: Fix "loading" icon for all video modes

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 129
---
 src/i_video.c | 211 +++++++++++++++++++++++++++++++++-------------------------
 1 file changed, 119 insertions(+), 92 deletions(-)

(limited to 'src')

diff --git a/src/i_video.c b/src/i_video.c
index 8e337db6..80d023da 100644
--- a/src/i_video.c
+++ b/src/i_video.c
@@ -1,7 +1,7 @@
 // Emacs style mode select   -*- C++ -*- 
 //-----------------------------------------------------------------------------
 //
-// $Id: i_video.c 126 2005-09-24 22:04:03Z fraggle $
+// $Id: i_video.c 129 2005-09-24 23:41:07Z fraggle $
 //
 // Copyright(C) 1993-1996 Id Software, Inc.
 // Copyright(C) 2005 Simon Howard
@@ -22,6 +22,9 @@
 // 02111-1307, USA.
 //
 // $Log$
+// Revision 1.29  2005/09/24 23:41:07  fraggle
+// Fix "loading" icon for all video modes
+//
 // Revision 1.28  2005/09/24 22:04:03  fraggle
 // Add application icon to running program
 //
@@ -124,7 +127,7 @@
 //-----------------------------------------------------------------------------
 
 static const char
-rcsid[] = "$Id: i_video.c 126 2005-09-24 22:04:03Z fraggle $";
+rcsid[] = "$Id: i_video.c 129 2005-09-24 23:41:07Z fraggle $";
 
 #include <SDL.h>
 #include <ctype.h>
@@ -242,57 +245,6 @@ static void UpdateFocus(void)
     screenvisible = (state & SDL_APPACTIVE) != 0;
 }
 
-void I_BeginRead(void)
-{
-    int y;
-
-    if (disk_image == NULL)
-        return;
-
-    // save background and copy the disk image in
-
-    for (y=0; y<disk_image_h; ++y)
-    {
-        byte *screenloc = 
-               screens[0] 
-                 + (SCREENHEIGHT - 1 - disk_image_h + y) * SCREENWIDTH
-                 + (SCREENWIDTH - 1 - disk_image_w);
-
-        memcpy(saved_background + y * disk_image_w,
-               screenloc,
-               disk_image_w);
-        memcpy(screenloc, disk_image + y * disk_image_w, disk_image_w);
-    }
-
-    SDL_UpdateRect(screen, 
-                   screen->w - disk_image_w, screen->h - disk_image_h, 
-                   disk_image_w, disk_image_h);
-}
-
-void I_EndRead(void)
-{
-    int y;
-
-    if (disk_image == NULL)
-        return;
-
-    // save background and copy the disk image in
-
-    for (y=0; y<disk_image_h; ++y)
-    {
-        byte *screenloc = 
-               screens[0] 
-                 + (SCREENHEIGHT - 1 - disk_image_h + y) * SCREENWIDTH
-                 + (SCREENWIDTH - 1 - disk_image_w);
-
-        memcpy(screenloc, saved_background + y * disk_image_w, disk_image_w);
-    }
-
-    SDL_UpdateRect(screen, 
-                   screen->w - disk_image_w, screen->h - disk_image_h, 
-                   disk_image_w, disk_image_h);
-}
-
 static void LoadDiskImage(void)
 {
     patch_t *disk;
@@ -548,39 +500,21 @@ void UpdateGrab(void)
 
 }
 
-//
-// I_FinishUpdate
-//
-void I_FinishUpdate (void)
-{
-    static int	lasttic;
-    int		tics;
-    int		i;
-    // UNUSED static unsigned char *bigscreen=0;
-
-    UpdateGrab();
-
-    // Don't update the screen if the window isn't visible.
-    // Not doing this breaks under Windows when we alt-tab away 
-    // while fullscreen.
+// Update a small portion of the screen
 
-    if (!(SDL_GetAppState() & SDL_APPACTIVE))
-        return;
+static void UpdateArea(int x1, int y1, int x2, int y2, boolean always_update)
+{
+    int w = x2 - x1;
+    int h = y2 - y1;
 
-    // draws little dots on the bottom of the screen
-    if (devparm)
+    if (palette_to_set && !always_update)
     {
+        // If we have a palette to set, the only way to update is to
+        // update the entire screen
+        // If we are only updating part of the screen (disk icon), we 
+        // cannot update the screen
 
-	i = I_GetTime();
-	tics = i - lasttic;
-	lasttic = i;
-	if (tics > 20) tics = 20;
-
-	for (i=0 ; i<tics*2 ; i+=2)
-	    screens[0][ (SCREENHEIGHT-1)*SCREENWIDTH + i] = 0xff;
-	for ( ; i<20*2 ; i+=2)
-	    screens[0][ (SCREENHEIGHT-1)*SCREENWIDTH + i] = 0x0;
-    
+        return;
     }
 
     if (screenmultiply == 1 && !native_surface)
@@ -591,13 +525,13 @@ void I_FinishUpdate (void)
 
         SDL_LockSurface(screen);
 
-        bufp = screens[0];
-        screenp = (byte *) screen->pixels;
         pitch = screen->pitch;
+        bufp = screens[0] + y1 * SCREENWIDTH + x1;
+        screenp = (byte *) screen->pixels + y1 * pitch + x1;
 
-        for (y=0; y<SCREENHEIGHT; ++y)
+        for (y=y1; y<y2; ++y)
         {
-            memcpy(screenp, bufp, SCREENWIDTH);
+            memcpy(screenp, bufp, w);
             screenp += pitch;
             bufp += SCREENWIDTH;
         }
@@ -615,19 +549,19 @@ void I_FinishUpdate (void)
 
         SDL_LockSurface(screen);
 
-        bufp = screens[0];
-        screenp = (byte *) screen->pixels;
-        screenp2 = ((byte *) screen->pixels) + screen->pitch;
         pitch = screen->pitch * 2;
+        bufp = screens[0] + y1 * SCREENWIDTH + x1;
+        screenp = (byte *) screen->pixels + (y1 * pitch) +  (x1 * 2);
+        screenp2 = screenp + screen->pitch;
 
-        for (y=0; y<SCREENHEIGHT; ++y)
+        for (y=y1; y<y2; ++y)
         {
             byte *sp, *sp2, *bp;
             sp = screenp;
             sp2 = screenp2;
             bp = bufp;
 
-            for (x=0; x<SCREENWIDTH; ++x)
+            for (x=x1; x<x2; ++x)
             {
                 *sp2++ = *bp;
                 *sp2++ = *bp;
@@ -651,10 +585,103 @@ void I_FinishUpdate (void)
     }
     else
     {
-        SDL_Flip(screen);
+        SDL_UpdateRect(screen, 
+                       x1 * screenmultiply, 
+                       y1 * screenmultiply, 
+                       (x2-x1) * screenmultiply, 
+                       (y2-y1) * screenmultiply);
     }
 }
 
+void I_BeginRead(void)
+{
+    int y;
+
+    if (disk_image == NULL)
+        return;
+
+    // save background and copy the disk image in
+
+    for (y=0; y<disk_image_h; ++y)
+    {
+        byte *screenloc = 
+               screens[0] 
+                 + (SCREENHEIGHT - 1 - disk_image_h + y) * SCREENWIDTH
+                 + (SCREENWIDTH - 1 - disk_image_w);
+
+        memcpy(saved_background + y * disk_image_w,
+               screenloc,
+               disk_image_w);
+        memcpy(screenloc, disk_image + y * disk_image_w, disk_image_w);
+    }
+
+    UpdateArea(SCREENWIDTH - disk_image_w, SCREENHEIGHT - disk_image_h,
+               SCREENWIDTH, SCREENHEIGHT, 
+               false);
+}
+
+void I_EndRead(void)
+{
+    int y;
+
+    if (disk_image == NULL)
+        return;
+
+    // save background and copy the disk image in
+
+    for (y=0; y<disk_image_h; ++y)
+    {
+        byte *screenloc = 
+               screens[0] 
+                 + (SCREENHEIGHT - 1 - disk_image_h + y) * SCREENWIDTH
+                 + (SCREENWIDTH - 1 - disk_image_w);
+
+        memcpy(screenloc, saved_background + y * disk_image_w, disk_image_w);
+    }
+
+    UpdateArea(SCREENWIDTH - disk_image_w, SCREENHEIGHT - disk_image_h,
+               SCREENWIDTH, SCREENHEIGHT, 
+               false);
+}
+
+//
+// I_FinishUpdate
+//
+void I_FinishUpdate (void)
+{
+    static int	lasttic;
+    int		tics;
+    int		i;
+    // UNUSED static unsigned char *bigscreen=0;
+
+    UpdateGrab();
+
+    // Don't update the screen if the window isn't visible.
+    // Not doing this breaks under Windows when we alt-tab away 
+    // while fullscreen.
+
+    if (!(SDL_GetAppState() & SDL_APPACTIVE))
+        return;
+
+    // draws little dots on the bottom of the screen
+    if (devparm)
+    {
+
+	i = I_GetTime();
+	tics = i - lasttic;
+	lasttic = i;
+	if (tics > 20) tics = 20;
+
+	for (i=0 ; i<tics*2 ; i+=2)
+	    screens[0][ (SCREENHEIGHT-1)*SCREENWIDTH + i] = 0xff;
+	for ( ; i<20*2 ; i+=2)
+	    screens[0][ (SCREENHEIGHT-1)*SCREENWIDTH + i] = 0x0;
+    
+    }
+
+    UpdateArea(0, 0, SCREENWIDTH, SCREENHEIGHT, true);
+}
+
 
 //
 // I_ReadScreen
-- 
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