6041 follow path with 0 opacity

fixes #6041
do not defer path update if it is used as follow path constraint

Diffs=
54d736fec 6041 follow path with 0 opacity (#6060)

Co-authored-by: hernan <hernan@rive.app>

.rive_head

diff --git a/.rive_head b/.rive_head
index 5f1cbb1..6949616 100644
--- a/.rive_head
+++ b/.rive_head
@@ -1 +1 @@
-bb7d5ac4ccbe04a80c8469b56da55b9b92a70ef6
+54d736fec499e15bcd2420e61cd370bf11b9b70c

src/shapes/shape.cpp

diff --git a/src/shapes/shape.cpp b/src/shapes/shape.cpp
index 002061e..0d612bd 100644
--- a/src/shapes/shape.cpp
+++ b/src/shapes/shape.cpp
@@ -21,7 +21,9 @@
 
 bool Shape::canDeferPathUpdate()
 {
-    return renderOpacity() == 0 && (pathSpace() & PathSpace::Clipping) != PathSpace::Clipping;
+    return renderOpacity() == 0
+        && (pathSpace() & PathSpace::Clipping) != PathSpace::Clipping
+        && (pathSpace() & PathSpace::FollowPath) != PathSpace::FollowPath;
 }
 
 void Shape::update(ComponentDirt value)

test/assets/follow_path.riv

diff --git a/test/assets/follow_path.riv b/test/assets/follow_path.riv
new file mode 100644
index 0000000..606950c
--- /dev/null
+++ b/test/assets/follow_path.riv
Binary files differ

test/assets/follow_path_with_0_opacity.riv

diff --git a/test/assets/follow_path_with_0_opacity.riv b/test/assets/follow_path_with_0_opacity.riv
new file mode 100644
index 0000000..2948dee
--- /dev/null
+++ b/test/assets/follow_path_with_0_opacity.riv
Binary files differ

test/follow_path_constraint_test.cpp

diff --git a/test/follow_path_constraint_test.cpp b/test/follow_path_constraint_test.cpp
new file mode 100644
index 0000000..7ed2959
--- /dev/null
+++ b/test/follow_path_constraint_test.cpp
@@ -0,0 +1,49 @@
+#include <rive/file.hpp>
+#include <rive/node.hpp>
+#include <rive/shapes/shape.hpp>
+#include <rive/math/transform_components.hpp>
+#include <utils/no_op_renderer.hpp>
+#include "rive_file_reader.hpp"
+#include "rive_testing.hpp"
+#include <cstdio>
+
+TEST_CASE("follow path constraint updates world transform", "[file]")
+{
+    auto file = ReadRiveFile("../../test/assets/follow_path.riv");
+
+    auto artboard = file->artboard();
+
+    REQUIRE(artboard->find<rive::TransformComponent>("target") != nullptr);
+    auto target = artboard->find<rive::TransformComponent>("target");
+
+    REQUIRE(artboard->find<rive::TransformComponent>("rect") != nullptr);
+    auto rectangle = artboard->find<rive::TransformComponent>("rect");
+
+    artboard->advance(0.0f);
+
+    auto targetComponents = target->worldTransform().decompose();
+    auto rectComponents = rectangle->worldTransform().decompose();
+    REQUIRE(targetComponents.x() == rectComponents.x());
+    REQUIRE(targetComponents.y() == rectComponents.y());
+}
+
+
+TEST_CASE("follow path with 0 opacity constraint updates world transform", "[file]")
+{
+    auto file = ReadRiveFile("../../test/assets/follow_path_with_0_opacity.riv");
+
+    auto artboard = file->artboard();
+
+    REQUIRE(artboard->find<rive::TransformComponent>("target") != nullptr);
+    auto target = artboard->find<rive::TransformComponent>("target");
+
+    REQUIRE(artboard->find<rive::TransformComponent>("rect") != nullptr);
+    auto rectangle = artboard->find<rive::TransformComponent>("rect");
+
+    artboard->advance(0.0f);
+
+    auto targetComponents = target->worldTransform().decompose();
+    auto rectComponents = rectangle->worldTransform().decompose();
+    REQUIRE(targetComponents.x() == rectComponents.x());
+    REQUIRE(targetComponents.y() == rectComponents.y());
+}