From 1b9e17fb9a814799411778c8a8b51f981efcf0da Mon Sep 17 00:00:00 2001
From: Sergey Sharybin <sergey.vfx@gmail.com>
Date: Wed, 20 Mar 2013 18:01:41 +0000
Subject: [PATCH] When using border rendering, use the same border for
 compositor

This makes compositing as fast as it's possible in this case.

The only thing is border render+crop will still give funcy
results. This is the next thing to be solved in compositor.
---
 .../blender/compositor/intern/COM_ExecutionGroup.cpp | 10 ++++++++++
 .../blender/compositor/intern/COM_ExecutionGroup.h   |  2 ++
 .../compositor/intern/COM_ExecutionSystem.cpp        | 12 ++++++++++++
 3 files changed, 24 insertions(+)

diff --git a/source/blender/compositor/intern/COM_ExecutionGroup.cpp b/source/blender/compositor/intern/COM_ExecutionGroup.cpp
index 14fd7e0b6cf..82d1c7883e1 100644
--- a/source/blender/compositor/intern/COM_ExecutionGroup.cpp
+++ b/source/blender/compositor/intern/COM_ExecutionGroup.cpp
@@ -633,3 +633,13 @@ void ExecutionGroup::setViewerBorder(float xmin, float xmax, float ymin, float y
 		              ymin * this->m_height, ymax * this->m_height);
 	}
 }
+
+void ExecutionGroup::setRenderBorder(float xmin, float xmax, float ymin, float ymax)
+{
+	NodeOperation *operation = this->getOutputNodeOperation();
+
+	if (operation->isOutputOperation(true) && !(operation->isViewerOperation() || operation->isPreviewOperation())) {
+		BLI_rcti_init(&this->m_viewerBorder, xmin * this->m_width, xmax * this->m_width,
+		              ymin * this->m_height, ymax * this->m_height);
+	}
+}
diff --git a/source/blender/compositor/intern/COM_ExecutionGroup.h b/source/blender/compositor/intern/COM_ExecutionGroup.h
index b5f02e05be1..537dcb5974a 100644
--- a/source/blender/compositor/intern/COM_ExecutionGroup.h
+++ b/source/blender/compositor/intern/COM_ExecutionGroup.h
@@ -417,6 +417,8 @@ public:
 	 */
 	void setViewerBorder(float xmin, float xmax, float ymin, float ymax);
 
+	void setRenderBorder(float xmin, float xmax, float ymin, float ymax);
+
 #ifdef WITH_CXX_GUARDEDALLOC
 	MEM_CXX_CLASS_ALLOC_FUNCS("COM:ExecutionGroup")
 #endif
diff --git a/source/blender/compositor/intern/COM_ExecutionSystem.cpp b/source/blender/compositor/intern/COM_ExecutionSystem.cpp
index 2d87845d254..76381261576 100644
--- a/source/blender/compositor/intern/COM_ExecutionSystem.cpp
+++ b/source/blender/compositor/intern/COM_ExecutionSystem.cpp
@@ -95,6 +95,18 @@ ExecutionSystem::ExecutionSystem(RenderData *rd, bNodeTree *editingtree, bool re
 		ExecutionGroup *executionGroup = this->m_groups[index];
 		executionGroup->determineResolution(resolution);
 
+		if (rendering) {
+			/* TODO: would be nice to support cropping as well, but for now
+			 *       don't use border for compo when crop is enabled,
+			 *       otherwise area of interest will be a way off from rendered
+			 *       stuff
+			 */
+			if ((rd->mode & R_BORDER) && !(rd->mode & R_CROP)) {
+				executionGroup->setRenderBorder(rd->border.xmin, rd->border.xmax,
+				                                rd->border.ymin, rd->border.ymax);
+			}
+		}
+
 		if (use_viewer_border) {
 			executionGroup->setViewerBorder(viewer_border->xmin, viewer_border->xmax,
 			                                viewer_border->ymin, viewer_border->ymax);