=Texture Plugins=

Added a callback instance_init() so that any particular instance of a
texture plugin can initialize data. Updated the clouds2 and tile example
plugins to have a (dummy) call back.

release/plugins/texture/clouds2.c

@@ -77,6 +77,7 @@ float result[8];
 float cfra;
 
 int plugin_tex_doit(int, Cast*, float*, float*, float*);
+void plugin_instance_init(Cast*);
 
 /* ******************** Fixed functions ***************** */
 
@@ -94,6 +95,14 @@ void plugin_init(void)
 	
 }
 
+/* 
+ * initialize any data for a particular instance of
+ * the plugin here
+ */
+void plugin_instance_init(Cast *cast)
+{
+}
+
 /* this function should not be changed: */
 
 void plugin_getinfo(PluginInfo *info)
@@ -110,6 +119,7 @@ void plugin_getinfo(PluginInfo *info)
 	info->init= plugin_init;
 	info->tex_doit=  (TexDoit) plugin_tex_doit;
 	info->callback= plugin_but_changed;
+	info->instance_init= (void (*)(void *)) plugin_instance_init;
 }
 
 /* ********************* the texture ******************** */

release/plugins/texture/tiles.c

@@ -66,7 +66,7 @@ float result[8];
 float cfra;
 
 int plugin_tex_doit(int, Cast *, float *, float *, float *);
-
+void plugin_instance_init(Cast*);
 
 /* ******************** Fixed functions ***************** */
 
@@ -83,6 +83,14 @@ void plugin_init(void)
 {
 }
 
+/* 
+ * initialize any data for a particular instance of
+ * the plugin here
+ */
+void plugin_instance_init(Cast *cast)
+{
+}
+
 /* this function should not be changed: */
 
 void plugin_getinfo(PluginInfo *info)
@@ -99,6 +107,8 @@ void plugin_getinfo(PluginInfo *info)
 	info->init= plugin_init;
 	info->tex_doit=  (TexDoit) plugin_tex_doit;
 	info->callback= plugin_but_changed;
+	info->instance_init= (void (*)(void *)) plugin_instance_init;
+
 }
 
 /* ************************************************************

source/blender/blenkernel/BKE_plugin_types.h

@@ -65,6 +65,7 @@ typedef struct _PluginInfo {
 	void (*callback)(int);
 	TexDoit tex_doit;
 	SeqDoit seq_doit;
+	void (*instance_init)(void *);
 } PluginInfo;
 
 #endif

source/blender/blenkernel/intern/texture.c

@@ -136,6 +136,7 @@ void open_plugin_tex(PluginTex *pit)
 
 				info_func= (int (*)(PluginInfo *))PIL_dynlib_find_symbol(pit->handle, "plugin_getinfo");
 				if (!test_dlerr(pit->name, "plugin_getinfo")) {
+					info->instance_init = NULL;
 
 					info_func(info);
 
@@ -148,6 +149,7 @@ void open_plugin_tex(PluginTex *pit)
 					pit->varstr= info->varstr;
 					pit->result= info->result;
 					pit->cfra= info->cfra;
+					pit->instance_init = info->instance_init;
 					if (info->init) info->init();
 				}
 				MEM_freeN(info);
@@ -191,6 +193,9 @@ PluginTex *add_plugin_tex(char *str)
 			*((int *)(pit->data+a))= (int) varstr->def;
 	}
 
+	if (pit->instance_init)
+		pit->instance_init((void *) pit->data);
+
 	return pit;
 }
 

source/blender/blenloader/intern/readfile.c

@@ -2255,6 +2255,11 @@ static void direct_link_texture(FileData *fd, Tex *tex)
 	if(tex->plugin) {
 		tex->plugin->handle= 0;
 		open_plugin_tex(tex->plugin);
+		/* initialize data for this instance, if an initialization
+		 * function exists.
+		 */
+		if (tex->plugin->instance_init)
+			tex->plugin->instance_init((void *) tex->plugin->data);
 	}
 	tex->coba= newdataadr(fd, tex->coba);
 	tex->env= newdataadr(fd, tex->env);

source/blender/blenpluginapi/plugin.h

@@ -62,6 +62,8 @@ typedef struct _PluginInfo {
 	void (*callback)(int);
 	TexDoit tex_doit;
 	SeqDoit seq_doit;
+
+	void (*instance_init)(void *);
 } PluginInfo;
 
 int plugin_tex_getversion(void);

source/blender/makesdna/DNA_texture_types.h

@@ -89,6 +89,7 @@ typedef struct PluginTex {
 	float data[32];
 
 	int (*doit)(void);
+	void (*instance_init)(void *);
 
 	/* should be void (*)(unsigned short)... patched */	
 	void (*callback)(dna_ushort_fix);