Initial works for actial animation sampling and graph evaluation.

src/AnimGraph/AnimGraphNodes.h

@@ -9,6 +9,7 @@
 
 #include "AnimGraphData.h"
 #include "SyncTrack.h"
+#include "ozz/animation/runtime/sampling_job.h"
 
 struct AnimNode;
 
@@ -46,6 +47,8 @@ struct AnimNode {
 
   virtual ~AnimNode(){};
 
+  virtual bool Init(AnimGraphContext& context) { return true; };
+
   virtual void MarkActiveInputs(const std::vector<AnimGraphConnection>& inputs) {
     for (size_t i = 0, n = inputs.size(); i < n; i++) {
       AnimNode* input_node = inputs[i].m_source_node;
@@ -73,7 +76,7 @@ struct AnimNode {
     m_state = AnimNodeEvalState::TimeUpdated;
   }
 
-  virtual void Evaluate(){};
+  virtual void Evaluate(AnimGraphContext& context){};
 };
 
 
@@ -116,26 +119,7 @@ struct Blend2Node : public AnimNode {
     }
   }
 
-  virtual void UpdateTime(float dt, std::vector<NodeInput>& inputs) {
-    if (!m_sync_blend) {
-      m_time_now = m_time_now + dt;
-    }
-
-    for (size_t i = 0, n = inputs.size(); i < n; i++) {
-      AnimNode* input_node = inputs[i].m_node;
-      if (input_node == nullptr) {
-        continue;
-      }
-
-      if (input_node->m_state != AnimNodeEvalState::Deactivated) {
-        if (!m_sync_blend) {
-          input_node->m_time_now = m_time_now;
-        }
-        input_node->m_state = AnimNodeEvalState::TimeUpdated;
-        continue;
-      }
-    }
-  }
+  virtual void Evaluate(AnimGraphContext& context) override;
 };
 
 template <>
@@ -171,14 +155,21 @@ struct NodeSocketAccessor<Blend2Node> : public NodeSocketAccessorBase {
 //
 struct SpeedScaleNode : public AnimNode {
   AnimData* i_input = nullptr;
-  AnimData* i_output = nullptr;
+  AnimData* o_output = nullptr;
   float* i_speed_scale = nullptr;
 
-  virtual void UpdateTime(float time_last, float time_now) {
+  void UpdateTime(float time_last, float time_now) override {
     m_time_last = time_last;
     m_time_now = time_last + (time_now - time_last) * (*i_speed_scale);
     m_state = AnimNodeEvalState::TimeUpdated;
   }
+
+  void Evaluate(AnimGraphContext& context) override {
+    assert (i_input != nullptr);
+    assert (o_output != nullptr);
+
+    o_output->m_local_matrices = i_input->m_local_matrices;
+  };
 };
 
 template <>
@@ -191,7 +182,7 @@ struct NodeSocketAccessor<SpeedScaleNode> : public NodeSocketAccessorBase {
         SocketFlags::SocketFlagAffectsTime);
     RegisterInput("Input", &node->i_input);
 
-    RegisterOutput("Output", &node->i_output);
+    RegisterOutput("Output", &node->o_output);
   }
 };
 
@@ -201,6 +192,12 @@ struct NodeSocketAccessor<SpeedScaleNode> : public NodeSocketAccessorBase {
 struct AnimSamplerNode : public AnimNode {
   AnimData* o_output = nullptr;
   std::string m_filename;
+  ozz::animation::SamplingCache m_sampling_cache;
+  ozz::animation::Animation* m_animation = nullptr;
+
+  virtual ~AnimSamplerNode();
+  virtual bool Init(AnimGraphContext& context) override;
+  virtual void Evaluate(AnimGraphContext& context) override;
 };
 
 template <>
@@ -221,7 +218,7 @@ struct MathAddNode : public AnimNode {
   float* i_input1 = nullptr;
   float o_output = 0.f;
 
-  void Evaluate() override {
+  void Evaluate(AnimGraphContext& context) override {
     assert (i_input0 != nullptr);
     assert (i_input1 != nullptr);
 
@@ -249,7 +246,7 @@ struct MathFloatToVec3Node : public AnimNode {
   float* i_input2 = nullptr;
   Vec3 o_output = {0.f, 0.f, 0.f};
 
-  void Evaluate() override {
+  void Evaluate(AnimGraphContext& context) override {
     assert (i_input0 != nullptr);
     assert (i_input1 != nullptr);
     assert (i_input2 != nullptr);