[Bf-blender-cvs] [86eb8980d36] master: Cycles: Fixed broken camera motion blur when motion was not set to center on frame

[Stefan Werner]

Commit: 86eb8980d3609e5783b1253599d2d7badbdd3930
Author: Stefan Werner
Date:   Sat Aug 12 22:04:42 2017 +0200
Branches: master
https://developer.blender.org/rB86eb8980d3609e5783b1253599d2d7badbdd3930

Cycles: Fixed broken camera motion blur when motion was not set to center on frame

Reviewers: #cycles, sergey

Reviewed By: #cycles, sergey

Subscribers: sergey

Differential Revision: https://developer.blender.org/D2787

===================================================================

M	intern/cycles/blender/blender_camera.cpp

===================================================================

diff --git a/intern/cycles/blender/blender_camera.cpp b/intern/cycles/blender/blender_camera.cpp
index 40d6b25f2b7..b29711d30d3 100644
--- a/intern/cycles/blender/blender_camera.cpp
+++ b/intern/cycles/blender/blender_camera.cpp
@@ -544,7 +544,11 @@ void BlenderSync::sync_camera_motion(BL::RenderSettings& b_render,
 
 	if(tfm != cam->matrix) {
 		VLOG(1) << "Camera " << b_ob.name() << " motion detected.";
-		if(motion_time == -1.0f) {
+		if(motion_time == 0.0f) {
+			/* When motion blur is not centered in frame, cam->matrix gets reset. */
+			cam->matrix = tfm;
+		}
+		else if(motion_time == -1.0f) {
 			cam->motion.pre = tfm;
 			cam->use_motion = true;
 		}
@@ -573,7 +577,10 @@ void BlenderSync::sync_camera_motion(BL::RenderSettings& b_render,
 		float fov = 2.0f * atanf((0.5f * sensor_size) / bcam.lens / aspectratio);
 		if(fov != cam->fov) {
 			VLOG(1) << "Camera " << b_ob.name() << " FOV change detected.";
-			if(motion_time == -1.0f) {
+			if(motion_time == 0.0f) {
+				cam->fov = fov;
+			}
+			else if(motion_time == -1.0f) {
 				cam->fov_pre = fov;
 				cam->use_perspective_motion = true;
 			}