3D viewport render preview:

- Put it available as a default now (no debug value needed)
- Fixed viewport size error, viewport was badly set
  (visible with border render, property regions)
- Fixed hanging lock in conflict between drawing and initialize
  new renders.

source/blender/render/intern/source/external_engine.c

@@ -115,18 +115,6 @@ RenderEngineType *RE_engines_find(const char *idname)
 	type = BLI_findstring(&R_engines, idname, offsetof(RenderEngineType, idname));
 	if (!type)
 		type = &internal_render_type;
-
-	/* XXX Hack to make this a debug-only option, remove section to make it available default */
-	if (type == &internal_render_type) {
-		static RenderEngineType rtype;
-		
-		if (type->view_update == NULL)
-			rtype = internal_render_type;
-		else if (G.debug_value != -1) {
-			type = &rtype;
-		}
-	}
-	/* XXX end hack */
 	
 	return type;
 }

source/blender/render/intern/source/pipeline.c

@@ -348,6 +348,13 @@ void RE_ResultGet32(Render *re, unsigned int *rect)
 	RE_ReleaseResultImage(re);
 }
 
+/* caller is responsible for allocating rect in correct size! */
+/* Only for acquired results, for lock */
+void RE_AcquiredResultGet32(Render *re, RenderResult *result, unsigned int *rect)
+{
+	render_result_rect_get_pixels(result, rect, re->rectx, re->recty, &re->scene->view_settings, &re->scene->display_settings);
+}
+
 RenderStats *RE_GetStats(Render *re)
 {
 	return &re->i;
@@ -2446,7 +2453,7 @@ static int do_write_image_or_movie(Render *re, Main *bmain, Scene *scene, bMovie
 		if (ibuf->rect == NULL) {
 			ibuf->rect = MEM_mapallocN(sizeof(int) * rres.rectx * rres.recty, "temp 32 bits rect");
 			ibuf->mall |= IB_rect;
-			RE_ResultGet32(re, ibuf->rect);
+			RE_AcquiredResultGet32(re, &rres, ibuf->rect);
 			do_free = TRUE;
 		}