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Fix #69731: Cycles: Vector Pass ignores animated FOV

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This PR fixes the motion vector values when using animation of the (perspective)
camera focal length (and therefore changing the fov).

Pull Request: https://projects.blender.org/blender/blender/pulls/127442
This commit is contained in:
Mark Stead
2024-10-15 11:42:11 +02:00
committed by Sergey Sharybin
parent f909bf2b13
commit dfc58d282b
2 changed files with 13 additions and 9 deletions
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21
intern/cycles/scene/camera.cpp
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@@ -275,7 +275,6 @@ void Camera::update(Scene *scene)
rastertocamera = screentocamera * rastertoscreen;
full_rastertocamera = screentocamera * full_rastertoscreen;
cameratoraster = screentoraster * cameratoscreen;
cameratoworld = matrix;
screentoworld = cameratoworld * screentocamera;
@@ -354,7 +353,6 @@ void Camera::update(Scene *scene)
}
if (need_motion == Scene::MOTION_PASS) {
/* TODO(sergey): Support perspective (zoom, fov) motion. */
if (camera_type == CAMERA_PANORAMA) {
if (have_motion) {
kcam->motion_pass_pre = transform_inverse(motion[0]);
@@ -366,9 +364,19 @@ void Camera::update(Scene *scene)
}
}
else {
if (have_motion) {
kcam->perspective_pre = cameratoraster * transform_inverse(motion[0]);
kcam->perspective_post = cameratoraster * transform_inverse(motion[motion.size() - 1]);
if (have_motion || fov != fov_pre || fov != fov_post) {
/* Note the values for perspective_pre/perspective_post calculated for MOTION_PASS are
* different to those calculated for MOTION_BLUR below, so the code has not been combined.
*/
ProjectionTransform cameratoscreen_pre = projection_perspective(
fov_pre, nearclip, farclip);
ProjectionTransform cameratoscreen_post = projection_perspective(
fov_post, nearclip, farclip);
ProjectionTransform cameratoraster_pre = screentoraster * cameratoscreen_pre;
ProjectionTransform cameratoraster_post = screentoraster * cameratoscreen_post;
kcam->perspective_pre = cameratoraster_pre * transform_inverse(motion[0]);
kcam->perspective_post = cameratoraster_post *
transform_inverse(motion[motion.size() - 1]);
}
else {
kcam->perspective_pre = worldtoraster;
@@ -385,9 +393,6 @@ void Camera::update(Scene *scene)
/* TODO(sergey): Support other types of camera. */
if (use_perspective_motion && camera_type == CAMERA_PERSPECTIVE) {
/* TODO(sergey): Move to an utility function and de-duplicate with
* calculation above.
*/
ProjectionTransform screentocamera_pre = projection_inverse(
projection_perspective(fov_pre, nearclip, farclip));
ProjectionTransform screentocamera_post = projection_inverse(

1
intern/cycles/scene/camera.h
View File

@@ -159,7 +159,6 @@ class Camera : public Node {
Transform worldtocamera;
ProjectionTransform rastertocamera;
ProjectionTransform cameratoraster;
ProjectionTransform full_rastertocamera;