1 files changed, 124 insertions, 0 deletions
diff --git a/intern/cycles/kernel/geom/point.h b/intern/cycles/kernel/geom/point.h
new file mode 100644
index 00000000000..021135b76fb
--- /dev/null
+++ b/intern/cycles/kernel/geom/point.h
@@ -0,0 +1,124 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+CCL_NAMESPACE_BEGIN
+
+/* Point Primitive
+ *
+ * Point primitive for rendering point clouds.
+ */
+
+#ifdef __POINTCLOUD__
+
+/* Reading attributes on various point elements */
+
+ccl_device float point_attribute_float(KernelGlobals kg,
+                                       ccl_private const ShaderData *sd,
+                                       const AttributeDescriptor desc,
+                                       ccl_private float *dx,
+                                       ccl_private float *dy)
+{
+#  ifdef __RAY_DIFFERENTIALS__
+  if (dx)
+    *dx = 0.0f;
+  if (dy)
+    *dy = 0.0f;
+#  endif
+
+  if (desc.element == ATTR_ELEMENT_VERTEX) {
+    return kernel_tex_fetch(__attributes_float, desc.offset + sd->prim);
+  }
+  else {
+    return 0.0f;
+  }
+}
+
+ccl_device float2 point_attribute_float2(
+    KernelGlobals kg, const ShaderData *sd, const AttributeDescriptor desc, float2 *dx, float2 *dy)
+{
+#  ifdef __RAY_DIFFERENTIALS__
+  if (dx)
+    *dx = make_float2(0.0f, 0.0f);
+  if (dy)
+    *dy = make_float2(0.0f, 0.0f);
+#  endif
+
+  if (desc.element == ATTR_ELEMENT_VERTEX) {
+    return kernel_tex_fetch(__attributes_float2, desc.offset + sd->prim);
+  }
+  else {
+    return make_float2(0.0f, 0.0f);
+  }
+}
+
+ccl_device float3 point_attribute_float3(
+    KernelGlobals kg, const ShaderData *sd, const AttributeDescriptor desc, float3 *dx, float3 *dy)
+{
+#  ifdef __RAY_DIFFERENTIALS__
+  if (dx)
+    *dx = make_float3(0.0f, 0.0f, 0.0f);
+  if (dy)
+    *dy = make_float3(0.0f, 0.0f, 0.0f);
+#  endif
+
+  if (desc.element == ATTR_ELEMENT_VERTEX) {
+    return float4_to_float3(kernel_tex_fetch(__attributes_float4, desc.offset + sd->prim));
+  }
+  else {
+    return make_float3(0.0f, 0.0f, 0.0f);
+  }
+}
+
+ccl_device float4 point_attribute_float4(
+    KernelGlobals kg, const ShaderData *sd, const AttributeDescriptor desc, float4 *dx, float4 *dy)
+{
+#  ifdef __RAY_DIFFERENTIALS__
+  if (dx)
+    *dx = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
+  if (dy)
+    *dy = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
+#  endif
+
+  if (desc.element == ATTR_ELEMENT_VERTEX) {
+    return kernel_tex_fetch(__attributes_float4, desc.offset + sd->prim);
+  }
+  else {
+    return make_float4(0.0f, 0.0f, 0.0f, 0.0f);
+  }
+}
+
+/* Point radius */
+
+ccl_device float point_radius(KernelGlobals kg, ccl_private const ShaderData *sd)
+{
+  if (sd->type & PRIMITIVE_ALL_POINT) {
+    return kernel_tex_fetch(__points, sd->prim).w;
+  }
+
+  return 0.0f;
+}
+
+/* Point location for motion pass, linear interpolation between keys and
+ * ignoring radius because we do the same for the motion keys */
+
+ccl_device float3 point_motion_center_location(KernelGlobals kg, ccl_private const ShaderData *sd)
+{
+  return float4_to_float3(kernel_tex_fetch(__points, sd->prim));
+}
+
+#endif /* __POINTCLOUD__ */
+
+CCL_NAMESPACE_END