From 7c1407ea7171f83287b720ec65450940c9cbf158 Mon Sep 17 00:00:00 2001
From: Simon Howard
Date: Sat, 20 Sep 2008 21:26:30 +0000
Subject: Merge heretic/v_video.c to common code.

Subversion-branch: /branches/raven-branch
Subversion-revision: 1252
---
 src/v_video.c | 125 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 122 insertions(+), 3 deletions(-)

(limited to 'src/v_video.c')

diff --git a/src/v_video.c b/src/v_video.c
index e2fc7eea..db2779c2 100644
--- a/src/v_video.c
+++ b/src/v_video.c
@@ -26,9 +26,6 @@
 //
 //-----------------------------------------------------------------------------
 
-
-
-
 #include "i_system.h"
 
 #include "doomtype.h"
@@ -42,6 +39,11 @@
 #include "w_wad.h"
 #include "z_zone.h"
 
+// Blending table used for fuzzpatch, etc.
+// Only used in Heretic/Hexen
+
+byte *tinttable = NULL;
+
 // The screen buffer that the v_video.c code draws to.
 
 static byte *dest_screen = NULL;
@@ -312,6 +314,114 @@ void V_DrawPatchDirect(int x, int y, patch_t *patch)
 {
     V_DrawPatch(x, y, patch); 
 } 
+
+//
+// V_DrawFuzzPatch
+//
+// Masks a column based translucent masked pic to the screen.
+//
+
+void V_DrawFuzzPatch(int x, int y, patch_t * patch)
+{
+    int count, col;
+    column_t *column;
+    byte *desttop, *dest, *source;
+    int w;
+
+    y -= SHORT(patch->topoffset);
+    x -= SHORT(patch->leftoffset);
+
+    if (x < 0
+     || x + SHORT(patch->width) > SCREENWIDTH 
+     || y < 0
+     || y + SHORT(patch->height) > SCREENHEIGHT)
+    {
+        I_Error("Bad V_DrawFuzzPatch");
+    }
+
+    col = 0;
+    desttop = dest_screen + y * SCREENWIDTH + x;
+
+    w = SHORT(patch->width);
+    for (; col < w; x++, col++, desttop++)
+    {
+        column = (column_t *) ((byte *) patch + LONG(patch->columnofs[col]));
+
+        // step through the posts in a column
+
+        while (column->topdelta != 0xff)
+        {
+            source = (byte *) column + 3;
+            dest = desttop + column->topdelta * SCREENWIDTH;
+            count = column->length;
+
+            while (count--)
+            {
+                *dest = tinttable[((*dest) << 8) + *source++];
+                dest += SCREENWIDTH;
+            }
+            column = (column_t *) ((byte *) column + column->length + 4);
+        }
+    }
+}
+
+//
+// V_DrawShadowedPatch
+//
+// Masks a column based masked pic to the screen.
+//
+
+void V_DrawShadowedPatch(int x, int y, patch_t *patch)
+{
+    int count, col;
+    column_t *column;
+    byte *desttop, *dest, *source;
+    byte *desttop2, *dest2;
+    int w;
+
+    y -= SHORT(patch->topoffset);
+    x -= SHORT(patch->leftoffset);
+
+    if (x < 0
+     || x + SHORT(patch->width) > SCREENWIDTH
+     || y < 0
+     || y + SHORT(patch->height) > SCREENHEIGHT)
+    {
+        I_Error("Bad V_DrawShadowedPatch");
+    }
+
+    col = 0;
+    desttop = dest_screen + y * SCREENWIDTH + x;
+    desttop2 = dest_screen + (y + 2) * SCREENWIDTH + x + 2;
+
+    w = SHORT(patch->width);
+    for (; col < w; x++, col++, desttop++, desttop2++)
+    {
+        column = (column_t *) ((byte *) patch + LONG(patch->columnofs[col]));
+
+        // step through the posts in a column
+
+        while (column->topdelta != 0xff)
+        {
+            source = (byte *) column + 3;
+            dest = desttop + column->topdelta * SCREENWIDTH;
+            dest2 = desttop2 + column->topdelta * SCREENWIDTH;
+            count = column->length;
+
+            while (count--)
+            {
+                *dest2 = tinttable[((*dest2) << 8)];
+                dest2 += SCREENWIDTH;
+                *dest = *source++;
+                dest += SCREENWIDTH;
+
+            }
+            column = (column_t *) ((byte *) column + column->length + 4);
+        }
+    }
+}
+
+
  
 
 
@@ -345,7 +455,16 @@ void V_DrawBlock(int x, int y, int width, int height, byte *src)
 	dest += SCREENWIDTH; 
     } 
 } 
+
+//
+// Draw a "raw" screen (lump containing raw data to blit directly
+// to the screen)
+//
  
+void V_DrawRawScreen(byte *raw)
+{
+    memcpy(dest_screen, raw, SCREENWIDTH * SCREENHEIGHT);
+}
 
 //
 // V_Init
-- 
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