Fix finale text and try and prevent some data corruption due to the scaling code. Also allows the non-standard GP32 mods to work with some bounds checking. More comments are in v_video.c

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9511 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 12 insertions, 1 deletions

diff --git a/apps/plugins/doom/v_video.c b/apps/plugins/doom/v_video.c
index ca90c4b..bd4d507 100644
--- a/apps/plugins/doom/v_video.c
+++ b/apps/plugins/doom/v_video.c
@@ -527,7 +527,7 @@ void V_DrawMemPatch(int x, int y, int scrn, const patch_t *patch,
 
       byte *desttop;
       int   col;
-      int   w = (SHORT( patch->width ) << 16) - 1; // CPhipps - -1 for faster flipping
+      int   w = (SHORT( patch->width ) << 16) -1; // CPhipps - -1 for faster flipping
       int   stretchx, stretchy;
       int   DX  = (SCREENWIDTH<<16)  / 320;
       int   DXI = (320<<16)          / SCREENWIDTH;
@@ -559,6 +559,17 @@ void V_DrawMemPatch(int x, int y, int scrn, const patch_t *patch,
             register int         count  = ( column->length * DY ) >> 16;
             register int         srccol = 0x8000;
 
+            count = (count>SCREENHEIGHT)?SCREENHEIGHT:count;  // Bounds checking allows those messed up
+                                                              // GP32 mods to work (they're using patch->
+                                                              // height values of 240, this code cuts off
+                                                              // thier bottom few pixels
+
+            // NOTE: This scaling code does not work correctly on at least the H300's, this can be seen
+            // in the intro graphic along the left side, the pixels are not correct.  A more blatant
+            // example is the bunnyscroller at the end of retail doom episode 3.  I've added one extra
+            // width to d_screens[0] and this seemed to stop the freeze at the end of the game.  This
+            // needs to be fixed properly.
+
             if (flags & VPT_TRANS)
                while (count--) {
                   *dest  =  trans[source[srccol>>16]];