From a60a33c204fa2af19890651e4a6c3c8e1e1efb31 Mon Sep 17 00:00:00 2001
From: Yves Rizoud <yrizoud@gmail.com>
Date: Mon, 7 Nov 2011 00:06:17 +0000
Subject: [PATCH] Tilemap mode works, and it's faster than I thought possible.

git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@1858 416bcca6-2ee7-4201-b75f-2eb2f807beb1
---
 src/buttons.c |  1 +
 src/graph.c   | 11 ++++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/buttons.c b/src/buttons.c
index 0d37214d..741546d5 100644
--- a/src/buttons.c
+++ b/src/buttons.c
@@ -4541,6 +4541,7 @@ void Button_Effects(void)
   Display_effect_sprite(EFFECTS_SPRITE_GRID,   C2+1,77);
   Display_effect_sprite(EFFECTS_SPRITE_TILING, C2+1,96);
   Display_effect_sprite(EFFECTS_SPRITE_8BIT,  177+1,20);
+  Display_effect_sprite(EFFECTS_SPRITE_TILING,177+1,39);
   Display_effect_states();
 
   Print_in_window(12,117,"click: Left:Switch / Right:Edit",MC_Dark,MC_Light);
diff --git a/src/graph.c b/src/graph.c
index bc37a181..f4c024d1 100644
--- a/src/graph.c
+++ b/src/graph.c
@@ -2746,7 +2746,16 @@ void Display_pixel(word x,word y,byte color)
     && (!((Mask_mode)    && (Mask_table[Read_pixel_from_spare_screen(x,y)]))) )
   {
     color=Effect_function(x,y,color);
-    Pixel_in_current_screen(x,y,color,1);
+    if (Tilemap_mode)
+    {
+      int xx,yy;
+      for (yy=(y-Snap_offset_Y)%Snap_height+Snap_offset_Y;yy<Main_image_height;yy+=Snap_height)
+        for (xx=(x-Snap_offset_X)%Snap_width+Snap_offset_X;xx<Main_image_width;xx+=Snap_width)
+          Pixel_in_current_screen(xx,yy,color,yy>=Limit_top&&yy<=Limit_bottom&&xx>=Limit_left&&xx<=Limit_right);
+      Update_rect(0,0,0,0);
+    }
+    else
+      Pixel_in_current_screen(x,y,color,1);
   }
 }