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Code refactor: add DecomposedTransform.

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This is in preparation of making Transform affine only, and also gives us
a little extra type safety so we don't accidentally treat it as a regular
4x4 matrix.
This commit is contained in:
Brecht Van Lommel
2018-03-08 06:19:17 +01:00
parent 516e82a900
commit 623141f339
9 changed files with 45 additions and 27 deletions
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2
intern/cycles/kernel/geom/geom_object.h
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@@ -96,7 +96,7 @@ ccl_device_inline Transform object_fetch_vector_transform(KernelGlobals *kg, int
#ifdef __OBJECT_MOTION__
ccl_device_inline Transform object_fetch_transform_motion(KernelGlobals *kg, int object, float time)
{
const ccl_global MotionTransform *motion = &kernel_tex_fetch(__objects, object).tfm;
const ccl_global DecomposedMotionTransform *motion = &kernel_tex_fetch(__objects, object).tfm;
Transform tfm;
transform_motion_interpolate(&tfm, motion, time);

4
intern/cycles/kernel/geom/geom_primitive.h
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@@ -220,13 +220,13 @@ ccl_device_inline float4 primitive_motion_vector(KernelGlobals *kg, ShaderData *
motion_center.x *= kernel_data.cam.width;
motion_center.y *= kernel_data.cam.height;
tfm = kernel_data.cam.motion.pre;
tfm = kernel_data.cam.pass_motion.pre;
motion_pre = normalize(transform_point(&tfm, motion_pre));
motion_pre = float2_to_float3(direction_to_panorama(&kernel_data.cam, motion_pre));
motion_pre.x *= kernel_data.cam.width;
motion_pre.y *= kernel_data.cam.height;
tfm = kernel_data.cam.motion.post;
tfm = kernel_data.cam.pass_motion.post;
motion_post = normalize(transform_point(&tfm, motion_post));
motion_post = float2_to_float3(direction_to_panorama(&kernel_data.cam, motion_post));
motion_post.x *= kernel_data.cam.width;

6
intern/cycles/kernel/kernel_camera.h
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@@ -92,7 +92,7 @@ ccl_device void camera_sample_perspective(KernelGlobals *kg, float raster_x, flo
#ifdef __CAMERA_MOTION__
if(kernel_data.cam.have_motion) {
ccl_constant MotionTransform *motion = &kernel_data.cam.motion;
ccl_constant DecomposedMotionTransform *motion = &kernel_data.cam.motion;
transform_motion_interpolate_constant(&cameratoworld,
motion,
ray->time);
@@ -198,7 +198,7 @@ ccl_device void camera_sample_orthographic(KernelGlobals *kg, float raster_x, fl
#ifdef __CAMERA_MOTION__
if(kernel_data.cam.have_motion) {
ccl_constant MotionTransform *motion = &kernel_data.cam.motion;
ccl_constant DecomposedMotionTransform *motion = &kernel_data.cam.motion;
transform_motion_interpolate_constant(&cameratoworld,
motion,
ray->time);
@@ -270,7 +270,7 @@ ccl_device_inline void camera_sample_panorama(ccl_constant KernelCamera *cam,
#ifdef __CAMERA_MOTION__
if(cam->have_motion) {
ccl_constant MotionTransform *motion = &cam->motion;
ccl_constant DecomposedMotionTransform *motion = &cam->motion;
transform_motion_interpolate_constant(&cameratoworld,
motion,
ray->time);

7
intern/cycles/kernel/kernel_types.h
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@@ -1201,12 +1201,15 @@ typedef struct KernelCamera {
ProjectionTransform worldtondc;
Transform worldtocamera;
MotionTransform motion;
DecomposedMotionTransform motion;
/* Stores changes in the projeciton matrix. Use for camera zoom motion
* blur and motion pass output for perspective camera. */
PerspectiveMotionTransform perspective_motion;
/* Transforms for motion pass. */
MotionTransform pass_motion;
int shutter_table_offset;
/* Rolling shutter */
@@ -1430,7 +1433,7 @@ static_assert_align(KernelData, 16);
/* Kernel data structures. */
typedef struct KernelObject {
MotionTransform tfm;
DecomposedMotionTransform tfm;
float surface_area;
float pass_id;

8
intern/cycles/render/camera.cpp
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@@ -341,12 +341,12 @@ void Camera::update(Scene *scene)
/* TODO(sergey): Support perspective (zoom, fov) motion. */
if(type == CAMERA_PANORAMA) {
if(use_motion) {
kcam->motion.pre = transform_inverse(motion.pre);
kcam->motion.post = transform_inverse(motion.post);
kcam->pass_motion.pre = transform_inverse(motion.pre);
kcam->pass_motion.post = transform_inverse(motion.post);
}
else {
kcam->motion.pre = kcam->worldtocamera;
kcam->motion.post = kcam->worldtocamera;
kcam->pass_motion.pre = kcam->worldtocamera;
kcam->pass_motion.post = kcam->worldtocamera;
}
}
else {

4
intern/cycles/render/object.cpp
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@@ -97,7 +97,7 @@ void Object::compute_bounds(bool motion_blur)
mtfm.post = tfm;
}
MotionTransform decomp;
DecomposedMotionTransform decomp;
transform_motion_decompose(&decomp, &mtfm, &tfm);
bounds = BoundBox::empty;
@@ -401,7 +401,7 @@ void ObjectManager::device_update_object_transform(UpdateObjectTransformState *s
else if(state->need_motion == Scene::MOTION_BLUR) {
if(ob->use_motion) {
/* decompose transformations for interpolation. */
MotionTransform decomp;
DecomposedMotionTransform decomp;
transform_motion_decompose(&decomp, &ob->motion, &ob->tfm);
kobject.tfm = decomp;

2
intern/cycles/util/util_projection.h
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@@ -21,7 +21,7 @@
CCL_NAMESPACE_BEGIN
/* Data Types */
/* 4x4 projection matrix, perspective or orthographic. */
typedef struct ProjectionTransform {
float4 x, y, z, w; /* rows */

4
intern/cycles/util/util_transform.cpp
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@@ -202,7 +202,7 @@ float4 transform_to_quat(const Transform& tfm)
return qt;
}
static void transform_decompose(Transform *decomp, const Transform *tfm)
static void transform_decompose(DecomposedTransform *decomp, const Transform *tfm)
{
/* extract translation */
decomp->y = make_float4(tfm->x.w, tfm->y.w, tfm->z.w, 0.0f);
@@ -247,7 +247,7 @@ static void transform_decompose(Transform *decomp, const Transform *tfm)
decomp->w = make_float4(scale.y.z, scale.z.x, scale.z.y, scale.z.z);
}
void transform_motion_decompose(MotionTransform *decomp, const MotionTransform *motion, const Transform *mid)
void transform_motion_decompose(DecomposedMotionTransform *decomp, const MotionTransform *motion, const Transform *mid)
{
transform_decompose(&decomp->pre, &motion->pre);
transform_decompose(&decomp->mid, mid);

35
intern/cycles/util/util_transform.h
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@@ -37,16 +37,26 @@ typedef struct Transform {
#endif
} Transform;
/* transform decomposed in rotation/translation/scale. we use the same data
* structure as Transform, and tightly pack decomposition into it. first the
* rotation (4), then translation (3), then 3x3 scale matrix (9). */
typedef struct ccl_may_alias MotionTransform {
Transform pre;
Transform mid;
Transform post;
} MotionTransform;
/* Transform decomposed in rotation/translation/scale. we use the same data
* structure as Transform, and tightly pack decomposition into it. first the
* rotation (4), then translation (3), then 3x3 scale matrix (9). */
typedef struct DecomposedTransform {
float4 x, y, z, w;
} DecomposedTransform;
typedef struct ccl_may_alias DecomposedMotionTransform {
DecomposedTransform pre;
DecomposedTransform mid;
DecomposedTransform post;
} DecomposedMotionTransform;
/* Functions */
ccl_device_inline float3 transform_point(const Transform *t, const float3 a)
@@ -384,7 +394,7 @@ ccl_device_inline Transform transform_quick_inverse(Transform M)
return R;
}
ccl_device_inline void transform_compose(Transform *tfm, const Transform *decomp)
ccl_device_inline void transform_compose(Transform *tfm, const DecomposedTransform *decomp)
{
/* rotation */
float q0, q1, q2, q3, qda, qdb, qdc, qaa, qab, qac, qbb, qbc, qcc;
@@ -420,9 +430,9 @@ ccl_device_inline void transform_compose(Transform *tfm, const Transform *decomp
tfm->w = make_float4(0.0f, 0.0f, 0.0f, 1.0f);
}
ccl_device void transform_motion_interpolate(Transform *tfm, const ccl_global MotionTransform *motion, float t)
ccl_device void transform_motion_interpolate(Transform *tfm, const ccl_global DecomposedMotionTransform *motion, float t)
{
Transform decomp;
DecomposedTransform decomp;
/* linear interpolation for rotation and scale */
if(t < 0.5f) {
@@ -446,12 +456,12 @@ ccl_device void transform_motion_interpolate(Transform *tfm, const ccl_global Mo
transform_compose(tfm, &decomp);
}
ccl_device void transform_motion_interpolate_constant(Transform *tfm, ccl_constant MotionTransform *motion, float t)
ccl_device void transform_motion_interpolate_constant(Transform *tfm, ccl_constant DecomposedMotionTransform *motion, float t)
{
/* possible optimization: is it worth it adding a check to skip scaling?
* it's probably quite uncommon to have scaling objects. or can we skip
* just shearing perhaps? */
Transform decomp;
DecomposedTransform decomp;
/* linear interpolation for rotation and scale */
if(t < 0.5f) {
@@ -479,13 +489,18 @@ ccl_device void transform_motion_interpolate_constant(Transform *tfm, ccl_consta
class BoundBox2D;
ccl_device_inline bool operator==(const DecomposedTransform& A, const DecomposedTransform& B)
{
return memcmp(&A, &B, sizeof(DecomposedTransform)) == 0;
}
ccl_device_inline bool operator==(const MotionTransform& A, const MotionTransform& B)
{
return (A.pre == B.pre && A.post == B.post);
}
float4 transform_to_quat(const Transform& tfm);
void transform_motion_decompose(MotionTransform *decomp, const MotionTransform *motion, const Transform *mid);
void transform_motion_decompose(DecomposedMotionTransform *decomp, const MotionTransform *motion, const Transform *mid);
Transform transform_from_viewplane(BoundBox2D& viewplane);
#endif