NEW: Ramp shades for diffuse and specular

http://www.blender3d.org/cms/Ramp_Shaders.348.0.html

Material color and specular now can be defined by a Colorband. The actual
color then is defined during shading based on:
- shade value (like dotproduct)
- energy value (dot product plus light)
- normal
- result of all shading (useful for adding stuff in the end)

Special request from [A]ndy! :)

2 files changed, 20 insertions, 4 deletions

diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index 0723b8175fc..361ac3666a0 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -1920,7 +1920,11 @@ static void direct_link_material(FileData *fd, Material *ma)
 	for(a=0; a<8; a++) {
 		ma->mtex[a]= newdataadr(fd, ma->mtex[a]);
 	}
-	ma->ren= 0;	/* should not be needed, nevertheless... */
+
+	ma->ramp_col= newdataadr(fd, ma->ramp_col);
+	ma->ramp_spec= newdataadr(fd, ma->ramp_spec);
+	
+	ma->ren= NULL;	/* should not be needed, nevertheless... */
 }
 
 /* ************ READ MESH ***************** */
@@ -4229,8 +4233,17 @@ static void do_versions(Main *main)
 		}
 
 	}
-
-
+	if(main->versionfile <= 233) {
+		Material *ma= main->mat.first;
+		
+		while(ma) {
+			if(ma->rampfac_col==0.0) ma->rampfac_col= 1.0;
+			if(ma->rampfac_spec==0.0) ma->rampfac_spec= 1.0;
+			if(ma->pr_lamp==0) ma->pr_lamp= 3;
+			ma= ma->id.next;
+		}
+	}
+	
 	/* don't forget to set version number in blender.c! */
 }
 
diff --git a/source/blender/blenloader/intern/writefile.c b/source/blender/blenloader/intern/writefile.c
index 32249c1c46b..d1d66ae2e63 100644
--- a/source/blender/blenloader/intern/writefile.c
+++ b/source/blender/blenloader/intern/writefile.c
@@ -912,7 +912,10 @@ static void write_materials(WriteData *wd, ListBase *idbase)
 			for(a=0; a<8; a++) {
 				if(ma->mtex[a]) writestruct(wd, DATA, "MTex", 1, ma->mtex[a]);
 			}
-
+			
+			if(ma->ramp_col) writestruct(wd, DATA, "ColorBand", 1, ma->ramp_col);
+			if(ma->ramp_spec) writestruct(wd, DATA, "ColorBand", 1, ma->ramp_spec);
+			
 			write_scriptlink(wd, &ma->scriptlink);
 		}
 		ma= ma->id.next;