add debug draw bounding box for render nodes

Author: gameknife

src/Application/gkNextRenderer/gkNextRenderer.cpp

@@ -567,6 +567,7 @@ void NextRendererGameInstance::DrawSettings()
 			ImGui::Checkbox(LOCTEXT("TickPhysics"), &userSetting.TickPhysics);
 			ImGui::Checkbox(LOCTEXT("DebugDraw"), &userSetting.ShowVisualDebug);
 			ImGui::Checkbox(LOCTEXT("DebugDraw_Lighting"), &userSetting.DebugDraw_Lighting);
+			ImGui::Checkbox(LOCTEXT("DebugDraw_BoundingBox"), &userSetting.DebugDraw_BoundingBox);
 			ImGui::Checkbox(LOCTEXT("DisableSpatialReuse"), &userSetting.DisableSpatialReuse);
 
 			ImGui::SliderFloat(LOCTEXT("Time Scaling"), &userSetting.HeatmapScale, 0.10f, 2.0f, "%.2f", ImGuiSliderFlags_Logarithmic);

src/Assets/Model.hpp

@@ -141,8 +141,8 @@ namespace Assets
         const std::vector<glm::uvec4>& CPUJoints() const { return joints_; }
         std::vector<glm::uvec4>& CPUJoints() { return joints_; }
 
-        glm::vec3 GetLocalAABBMin() {return local_aabb_min;}
-        glm::vec3 GetLocalAABBMax() {return local_aabb_max;}
+        glm::vec3 GetLocalAABBMin() const {return local_aabb_min;}
+        glm::vec3 GetLocalAABBMax() const {return local_aabb_max;}
 
         uint32_t NumberOfVertices() const { return verticeCount; }
         uint32_t NumberOfIndices() const { return indiceCount; }

src/Assets/Scene.cpp

@@ -14,6 +14,7 @@
 #include "Runtime/Components/RenderComponent.h"
 #include "Runtime/Components/PhysicsComponent.h"
 #include "Runtime/Engine.hpp"
+#include "Runtime/NextEngineHelper.h"
 #include "Runtime/Components/SkinnedMeshComponent.h"
 
 #include <spdlog/spdlog.h>
@@ -559,6 +560,48 @@ namespace Assets
             }
         }
 
+        if (NextEngine::GetInstance()->GetUserSettings().DebugDraw_BoundingBox)
+        {
+            for (auto& node : nodes_)
+            {
+                auto render = node->GetComponent<Runtime::RenderComponent>();
+                if (!render || !render->IsVisible() || !render->IsDrawable())
+                {
+                    continue;
+                }
+
+                const Model* model = GetModel(render->GetModelId());
+                if (!model)
+                {
+                    continue;
+                }
+
+                glm::vec3 localaabbMin = model->GetLocalAABBMin();
+                glm::vec3 localaabbMax = model->GetLocalAABBMax();
+
+                const auto& worldMtx = node->WorldTransform();
+                glm::vec3 corners[8];
+                corners[0] = glm::vec3(worldMtx * glm::vec4(localaabbMin.x, localaabbMin.y, localaabbMin.z, 1.0f));
+                corners[1] = glm::vec3(worldMtx * glm::vec4(localaabbMax.x, localaabbMin.y, localaabbMin.z, 1.0f));
+                corners[2] = glm::vec3(worldMtx * glm::vec4(localaabbMin.x, localaabbMax.y, localaabbMin.z, 1.0f));
+                corners[3] = glm::vec3(worldMtx * glm::vec4(localaabbMax.x, localaabbMax.y, localaabbMin.z, 1.0f));
+                corners[4] = glm::vec3(worldMtx * glm::vec4(localaabbMin.x, localaabbMin.y, localaabbMax.z, 1.0f));
+                corners[5] = glm::vec3(worldMtx * glm::vec4(localaabbMax.x, localaabbMin.y, localaabbMax.z, 1.0f));
+                corners[6] = glm::vec3(worldMtx * glm::vec4(localaabbMin.x, localaabbMax.y, localaabbMax.z, 1.0f));
+                corners[7] = glm::vec3(worldMtx * glm::vec4(localaabbMax.x, localaabbMax.y, localaabbMax.z, 1.0f));
+
+                glm::vec3 worldAABBMin = corners[0];
+                glm::vec3 worldAABBMax = corners[0];
+                for (int i = 1; i < 8; ++i)
+                {
+                    worldAABBMin = glm::min(worldAABBMin, corners[i]);
+                    worldAABBMax = glm::max(worldAABBMax, corners[i]);
+                }
+
+                NextEngineHelper::DrawAuxBox(worldAABBMin, worldAABBMax, glm::vec4(0.2f, 0.8f, 1.0f, 1.0f), 1.5f);
+            }
+        }
+
         if ( NextEngine::GetInstance()->GetTotalFrames() % 10 == 0 )
         {
             // if (sceneDirtyForCpuAS_)
@@ -755,4 +798,4 @@ namespace Assets
         skinnedVerticesSimpleAddr_ = skinnedVerticesSimple;
         jointMatricesAddr_ = jointMatrices;
     }
-}
+}

src/Runtime/Engine.cpp

@@ -132,6 +132,7 @@ UserSettings CreateUserSettings(const Options& options)
 
     userSettings.ShowVisualDebug = false;
     userSettings.HeatmapScale = 1.0f;
+    userSettings.DebugDraw_BoundingBox = false;
 
     userSettings.UseCheckerBoardRendering = false;
     userSettings.TemporalFrames = options.Temporal;

src/Runtime/UserSettings.hpp

@@ -21,6 +21,7 @@ struct UserSettings final
 	bool FastGather = false;
 	bool FastInterpole = false;
 	bool DebugDraw_Lighting = false;
+	bool DebugDraw_BoundingBox = false;
 	bool DisableSpatialReuse = false;
 	uint32_t SuperResolution = 1;
 	bool DLSS = false;