From b437d458d4f7add241d99f36729b0acb57e13142 Mon Sep 17 00:00:00 2001
From: Adrien Destugues <pulkomandy@gmail.com>
Date: Wed, 13 Jun 2012 19:50:35 +0000
Subject: [PATCH] CPC Mode 5 fixes :  * Be case unsensitive when looking for
 the GFX-file,  * When an underlay is hidden, do not use it and replace it
 with color 0, 1, 2 or 3. Allows to see pixel data alone or disable rasters on
 one color, as it's possible to get confused quite easily.

git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@1964 416bcca6-2ee7-4201-b75f-2eb2f807beb1
---
 src/graph.c           |  6 ++++--
 src/miscfileformats.c | 23 +++++++++++++++++------
 src/pages.c           |  5 ++++-
 3 files changed, 25 insertions(+), 9 deletions(-)

diff --git a/src/graph.c b/src/graph.c
index 82b03756..7e1bae28 100644
--- a/src/graph.c
+++ b/src/graph.c
@@ -3143,7 +3143,8 @@ void Pixel_in_screen_overlay(word x,word y,byte color)
     // Paste in depth buffer
     *(Main_visible_image_depth_buffer.Image+x+y*Main_image_width)=color;
     // Fetch pixel color from the target raster layer
-    color=*(Main_backups->Pages->Image[color].Pixels + x+y*Main_image_width);
+	if (Main_layers_visible & (1 << color))
+    	color=*(Main_backups->Pages->Image[color].Pixels + x+y*Main_image_width);
     // Draw that color on the visible image buffer
     *(x+y*Main_image_width+Main_screen)=color;
   }
@@ -3159,7 +3160,8 @@ void Pixel_in_screen_overlay_with_preview(word x,word y,byte color)
     // Paste in depth buffer
     *(Main_visible_image_depth_buffer.Image+x+y*Main_image_width)=color;
     // Fetch pixel color from the target raster layer
-    color=*(Main_backups->Pages->Image[color].Pixels + x+y*Main_image_width);
+	if (Main_layers_visible & (1 << color))
+    	color=*(Main_backups->Pages->Image[color].Pixels + x+y*Main_image_width);
     // Draw that color on the visible image buffer
     *(x+y*Main_image_width+Main_screen)=color;
     
diff --git a/src/miscfileformats.c b/src/miscfileformats.c
index cbd1614d..cda0f312 100644
--- a/src/miscfileformats.c
+++ b/src/miscfileformats.c
@@ -3101,14 +3101,25 @@ void Load_CM5(T_IO_Context* context)
   fclose(file);
 
   // Load the pixeldata to the 5th layer
-  filename[strlen(filename) - 3] = 0;
-  strcat(filename,"gfx");
-  if (!(file = fopen(filename, "rb")))
   {
-      File_error = 1;
-      return;
-  }
+  	char* ext = filename + strlen(filename) - 3;
+	int idx = 8;
+ 	do {
+		if (-- idx < 0)
+  		{
+    		File_error = 1;
+    		return;
+  		}
 
+		ext[0] = (idx & 1) ? 'g':'G';
+		ext[1] = (idx & 2) ? 'f':'F';
+		ext[2] = (idx & 4) ? 'x':'X';
+
+		printf("trying to load %s...\n", filename);
+
+  		file = fopen(filename, "rb");
+  	} while(file == NULL);
+  }
   Set_loading_layer(context, 4);
   
   for (ty = 0; ty < 256; ty++)
diff --git a/src/pages.c b/src/pages.c
index fe511e5c..0864482c 100644
--- a/src/pages.c
+++ b/src/pages.c
@@ -212,7 +212,10 @@ void Redraw_layered_image(void)
       for (i=0; i< Main_image_width*Main_image_height; i++)
       {
         layer = *(Main_backups->Pages->Image[4].Pixels+i);
-        Main_visible_image.Image[i]=*(Main_backups->Pages->Image[layer].Pixels+i);
+		if (Main_layers_visible & (1 << layer))
+        	Main_visible_image.Image[i]=*(Main_backups->Pages->Image[layer].Pixels+i);
+		else
+			Main_visible_image.Image[i] = layer;
       }
         
       // Copy it to the depth buffer