- use cache_ as a prefix for new modifiers.

- some comments to recent image changes.

source/blender/blenkernel/intern/dynamicpaint.c

@@ -976,7 +976,7 @@ struct DynamicPaintSurface *dynamicPaint_createNewSurface(DynamicPaintCanvasSett
 	surface->wave_timescale = 1.0f;
 	surface->wave_spring = 0.20f;
 
-	modifier_path_init(surface->image_output_path, sizeof(surface->image_output_path), "dynamicpaint");
+	modifier_path_init(surface->image_output_path, sizeof(surface->image_output_path), "cache_dynamicpaint");
 
 	dynamicPaintSurface_setUniqueName(surface, "Surface");
 

source/blender/editors/space_image/image_buttons.c

@@ -855,17 +855,17 @@ void uiTemplateImageSettings(uiLayout *layout, PointerRNA *imfptr)
 		uiItemR(col, imfptr, "compression", 0, NULL, ICON_NONE);
 	}
 
+	if (ELEM(imf->imtype, R_IMF_IMTYPE_OPENEXR, R_IMF_IMTYPE_MULTILAYER)) {
+		uiItemR(col, imfptr, "exr_codec", 0, NULL, ICON_NONE);
+	}
+
 	if (BKE_imtype_supports_zbuf(imf->imtype)) {
 		uiItemR(col, imfptr, "use_zbuffer", 0, NULL, ICON_NONE);
 	}
 
-	if (ELEM(imf->imtype, R_IMF_IMTYPE_OPENEXR, R_IMF_IMTYPE_MULTILAYER)) {
-		uiItemR(col, imfptr, "exr_codec", 0, NULL, ICON_NONE);
-
 	if (is_render_out && (imf->imtype == R_IMF_IMTYPE_OPENEXR)) {
 		uiItemR(col, imfptr, "use_preview", 0, NULL, ICON_NONE);
 	}
-	}
 
 	if (imf->imtype == R_IMF_IMTYPE_JP2) {
 		uiItemR(col, imfptr, "use_jpeg2k_ycc", 0, NULL, ICON_NONE);

source/blender/makesdna/DNA_scene_types.h

@@ -209,8 +209,13 @@ typedef struct SceneRenderLayer {
 /* note, srl->passflag is treestore element 'nr' in outliner, short still... */
 
 
-/* generic image format settings,
- * no video codec info however */
+/* Generic image format settings,
+ * this is used for NodeImageFile and IMAGE_OT_save_as operator too.
+ *
+ * note: its a bit strange that even though this is an image format struct
+ *  the imtype can still be used to select video formats.
+ *  RNA ensures these enum's are only selectable for render output.
+ */
 typedef struct ImageFormatData {
 	char imtype;   /* R_IMF_IMTYPE_PNG, R_... */
 	               /* note, video types should only ever be set from this

source/blender/makesrna/intern/rna_scene.c

@@ -2390,7 +2390,10 @@ static void rna_def_render_layers(BlenderRNA *brna, PropertyRNA *cprop)
 	RNA_def_property_flag(parm, PROP_REQUIRED|PROP_NEVER_NULL);
 }
 
-/* use for render output and image save operator */
+/* use for render output and image save operator,
+ * note: there are some cases where the members act differently when this is
+ * used from a scene, video formats can only be selected for render output
+ * for example, this is checked by seeing if the ptr->id.data is a Scene id */
 
 static void rna_def_scene_image_format_data(BlenderRNA *brna)
 {

source/blender/modifiers/intern/MOD_fluidsim_util.c

@@ -102,7 +102,7 @@ void fluidsim_init(FluidsimModifierData *fluidmd)
 		// fluid/inflow settings
 		// fss->iniVel --> automatically set to 0
 
-		modifier_path_init(fss->surfdataPath, sizeof(fss->surfdataPath), "fluid_cache");
+		modifier_path_init(fss->surfdataPath, sizeof(fss->surfdataPath), "cache_fluid");
 
 		// first init of bounding box
 		// no bounding box needed

source/blender/modifiers/intern/MOD_ocean.c

@@ -127,7 +127,7 @@ static void initData(ModifierData *md)
 	omd->repeat_x = 1;
 	omd->repeat_y = 1;
 
-	modifier_path_init(omd->cachepath, sizeof(omd->cachepath), "ocean_cache");
+	modifier_path_init(omd->cachepath, sizeof(omd->cachepath), "cache_ocean");
 
 	omd->cached = 0;
 	omd->bakestart = 1;