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path: root/intern/cycles/kernel/geom/geom_motion_triangle_shader.h
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Diffstat (limited to 'intern/cycles/kernel/geom/geom_motion_triangle_shader.h')
-rw-r--r--intern/cycles/kernel/geom/geom_motion_triangle_shader.h151
1 files changed, 70 insertions, 81 deletions
diff --git a/intern/cycles/kernel/geom/geom_motion_triangle_shader.h b/intern/cycles/kernel/geom/geom_motion_triangle_shader.h
index e91a4be96ba..5333e82b346 100644
--- a/intern/cycles/kernel/geom/geom_motion_triangle_shader.h
+++ b/intern/cycles/kernel/geom/geom_motion_triangle_shader.h
@@ -32,91 +32,80 @@ CCL_NAMESPACE_BEGIN
* normals */
/* return 3 triangle vertex normals */
-ccl_device_noinline void motion_triangle_shader_setup(KernelGlobals *kg,
- ShaderData *sd, const
- Intersection *isect,
- const Ray *ray,
- bool is_local)
+ccl_device_noinline void motion_triangle_shader_setup(
+ KernelGlobals *kg, ShaderData *sd, const Intersection *isect, const Ray *ray, bool is_local)
{
- /* Get shader. */
- sd->shader = kernel_tex_fetch(__tri_shader, sd->prim);
- /* Get motion info. */
- /* TODO(sergey): This logic is really similar to motion_triangle_vertices(),
- * can we de-duplicate something here?
- */
- int numsteps, numverts;
- object_motion_info(kg, sd->object, &numsteps, &numverts, NULL);
- /* Figure out which steps we need to fetch and their interpolation factor. */
- int maxstep = numsteps*2;
- int step = min((int)(sd->time*maxstep), maxstep-1);
- float t = sd->time*maxstep - step;
- /* Find attribute. */
- AttributeElement elem;
- int offset = find_attribute_motion(kg, sd->object,
- ATTR_STD_MOTION_VERTEX_POSITION,
- &elem);
- kernel_assert(offset != ATTR_STD_NOT_FOUND);
- /* Fetch vertex coordinates. */
- float3 verts[3], next_verts[3];
- uint4 tri_vindex = kernel_tex_fetch(__tri_vindex, sd->prim);
- motion_triangle_verts_for_step(kg, tri_vindex, offset, numverts, numsteps, step, verts);
- motion_triangle_verts_for_step(kg, tri_vindex, offset, numverts, numsteps, step+1, next_verts);
- /* Interpolate between steps. */
- verts[0] = (1.0f - t)*verts[0] + t*next_verts[0];
- verts[1] = (1.0f - t)*verts[1] + t*next_verts[1];
- verts[2] = (1.0f - t)*verts[2] + t*next_verts[2];
- /* Compute refined position. */
+ /* Get shader. */
+ sd->shader = kernel_tex_fetch(__tri_shader, sd->prim);
+ /* Get motion info. */
+ /* TODO(sergey): This logic is really similar to motion_triangle_vertices(),
+ * can we de-duplicate something here?
+ */
+ int numsteps, numverts;
+ object_motion_info(kg, sd->object, &numsteps, &numverts, NULL);
+ /* Figure out which steps we need to fetch and their interpolation factor. */
+ int maxstep = numsteps * 2;
+ int step = min((int)(sd->time * maxstep), maxstep - 1);
+ float t = sd->time * maxstep - step;
+ /* Find attribute. */
+ AttributeElement elem;
+ int offset = find_attribute_motion(kg, sd->object, ATTR_STD_MOTION_VERTEX_POSITION, &elem);
+ kernel_assert(offset != ATTR_STD_NOT_FOUND);
+ /* Fetch vertex coordinates. */
+ float3 verts[3], next_verts[3];
+ uint4 tri_vindex = kernel_tex_fetch(__tri_vindex, sd->prim);
+ motion_triangle_verts_for_step(kg, tri_vindex, offset, numverts, numsteps, step, verts);
+ motion_triangle_verts_for_step(kg, tri_vindex, offset, numverts, numsteps, step + 1, next_verts);
+ /* Interpolate between steps. */
+ verts[0] = (1.0f - t) * verts[0] + t * next_verts[0];
+ verts[1] = (1.0f - t) * verts[1] + t * next_verts[1];
+ verts[2] = (1.0f - t) * verts[2] + t * next_verts[2];
+ /* Compute refined position. */
#ifdef __BVH_LOCAL__
- if(is_local) {
- sd->P = motion_triangle_refine_local(kg,
- sd,
- isect,
- ray,
- verts);
- }
- else
-#endif /* __BVH_LOCAL__*/
- {
- sd->P = motion_triangle_refine(kg, sd, isect, ray, verts);
- }
- /* Compute face normal. */
- float3 Ng;
- if(sd->object_flag & SD_OBJECT_NEGATIVE_SCALE_APPLIED) {
- Ng = normalize(cross(verts[2] - verts[0], verts[1] - verts[0]));
- }
- else {
- Ng = normalize(cross(verts[1] - verts[0], verts[2] - verts[0]));
- }
- sd->Ng = Ng;
- sd->N = Ng;
- /* Compute derivatives of P w.r.t. uv. */
+ if (is_local) {
+ sd->P = motion_triangle_refine_local(kg, sd, isect, ray, verts);
+ }
+ else
+#endif /* __BVH_LOCAL__*/
+ {
+ sd->P = motion_triangle_refine(kg, sd, isect, ray, verts);
+ }
+ /* Compute face normal. */
+ float3 Ng;
+ if (sd->object_flag & SD_OBJECT_NEGATIVE_SCALE_APPLIED) {
+ Ng = normalize(cross(verts[2] - verts[0], verts[1] - verts[0]));
+ }
+ else {
+ Ng = normalize(cross(verts[1] - verts[0], verts[2] - verts[0]));
+ }
+ sd->Ng = Ng;
+ sd->N = Ng;
+ /* Compute derivatives of P w.r.t. uv. */
#ifdef __DPDU__
- sd->dPdu = (verts[0] - verts[2]);
- sd->dPdv = (verts[1] - verts[2]);
+ sd->dPdu = (verts[0] - verts[2]);
+ sd->dPdv = (verts[1] - verts[2]);
#endif
- /* Compute smooth normal. */
- if(sd->shader & SHADER_SMOOTH_NORMAL) {
- /* Find attribute. */
- AttributeElement elem;
- int offset = find_attribute_motion(kg,
- sd->object,
- ATTR_STD_MOTION_VERTEX_NORMAL,
- &elem);
- kernel_assert(offset != ATTR_STD_NOT_FOUND);
- /* Fetch vertex coordinates. */
- float3 normals[3], next_normals[3];
- motion_triangle_normals_for_step(kg, tri_vindex, offset, numverts, numsteps, step, normals);
- motion_triangle_normals_for_step(kg, tri_vindex, offset, numverts, numsteps, step+1, next_normals);
- /* Interpolate between steps. */
- normals[0] = (1.0f - t)*normals[0] + t*next_normals[0];
- normals[1] = (1.0f - t)*normals[1] + t*next_normals[1];
- normals[2] = (1.0f - t)*normals[2] + t*next_normals[2];
- /* Interpolate between vertices. */
- float u = sd->u;
- float v = sd->v;
- float w = 1.0f - u - v;
- sd->N = (u*normals[0] + v*normals[1] + w*normals[2]);
- }
+ /* Compute smooth normal. */
+ if (sd->shader & SHADER_SMOOTH_NORMAL) {
+ /* Find attribute. */
+ AttributeElement elem;
+ int offset = find_attribute_motion(kg, sd->object, ATTR_STD_MOTION_VERTEX_NORMAL, &elem);
+ kernel_assert(offset != ATTR_STD_NOT_FOUND);
+ /* Fetch vertex coordinates. */
+ float3 normals[3], next_normals[3];
+ motion_triangle_normals_for_step(kg, tri_vindex, offset, numverts, numsteps, step, normals);
+ motion_triangle_normals_for_step(
+ kg, tri_vindex, offset, numverts, numsteps, step + 1, next_normals);
+ /* Interpolate between steps. */
+ normals[0] = (1.0f - t) * normals[0] + t * next_normals[0];
+ normals[1] = (1.0f - t) * normals[1] + t * next_normals[1];
+ normals[2] = (1.0f - t) * normals[2] + t * next_normals[2];
+ /* Interpolate between vertices. */
+ float u = sd->u;
+ float v = sd->v;
+ float w = 1.0f - u - v;
+ sd->N = (u * normals[0] + v * normals[1] + w * normals[2]);
+ }
}
CCL_NAMESPACE_END
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