[Rendering] Lens flare phase1

src/CMakeLists.txt

@@ -12,6 +12,7 @@ set(MXENGINE_SOURCES
 "Core/Components/Camera/CameraController.cpp" 
 "Core/Components/Camera/CameraEffects.cpp" 
 "Core/Components/Camera/CameraGodRay.cpp" 
+"Core/Components/Camera/CameraLensFlare.cpp" 
 "Core/Components/Camera/FrustrumCamera.cpp" 
 "Core/Components/Camera/InputController.cpp" 
 "Core/Components/Camera/OrthographicCamera.cpp" 

src/Core/Components/Camera/CameraController.cpp

@@ -445,6 +445,16 @@ namespace MxEngine
         return this->renderBuffers->SwapHDR2;
     }
 
+    TextureHandle CameraController::GetSwapHalf1() const
+    {
+        return this->renderBuffers->SwapHalf1;
+    }
+
+    TextureHandle CameraController::GetSwapHalf2() const
+    {
+        return this->renderBuffers->SwapHalf2;
+    }
+
     TextureHandle CameraController::GetSwapHDRTexture1() const
     {
         return this->renderBuffers->SwapHDR1;
@@ -461,6 +471,8 @@ namespace MxEngine
         this->HDR = Factory<Texture>::Create();
         this->SwapHDR1 = Factory<Texture>::Create();
         this->SwapHDR2 = Factory<Texture>::Create();
+        this->SwapHalf1 = Factory<Texture>::Create();
+        this->SwapHalf2 = Factory<Texture>::Create();
 
         this->Resize(width, height);
 
@@ -512,6 +524,14 @@ namespace MxEngine
         this->SwapHDR2->Load(nullptr, width, height, 3, false, TextureFormat::RGBA16F);
         this->SwapHDR2->SetInternalEngineTag(MXENGINE_MAKE_INTERNAL_TAG("camera swap hdr 2"));
         this->SwapHDR2->SetWrapType(TextureWrap::CLAMP_TO_EDGE);
+
+        this->SwapHalf1->Load(nullptr, width / 4, height / 4, 3, false, TextureFormat::RGBA16F);
+        this->SwapHalf1->SetInternalEngineTag(MXENGINE_MAKE_INTERNAL_TAG("camera swap half 1"));
+        this->SwapHalf1->SetWrapType(TextureWrap::CLAMP_TO_EDGE);
+
+        this->SwapHalf2->Load(nullptr, width / 4, height / 4, 3, false, TextureFormat::RGBA16F);
+        this->SwapHalf2->SetInternalEngineTag(MXENGINE_MAKE_INTERNAL_TAG("camera swap half 2"));
+        this->SwapHalf2->SetWrapType(TextureWrap::CLAMP_TO_EDGE);
     }
 
     void CameraRender::DeInit()
@@ -524,6 +544,7 @@ namespace MxEngine
         Factory<Texture>::Destroy(this->HDR);
         Factory<Texture>::Destroy(this->SwapHDR1);
         Factory<Texture>::Destroy(this->SwapHDR2);
+        Factory<Texture>::Destroy(this->SwapHalf1);
     }
 
     MXENGINE_REFLECT_TYPE

src/Core/Components/Camera/CameraController.h

@@ -53,6 +53,8 @@ namespace MxEngine
         TextureHandle HDR;
         TextureHandle SwapHDR1;
         TextureHandle SwapHDR2;
+        TextureHandle SwapHalf1;
+        TextureHandle SwapHalf2;
 
         void Init(int width, int height);
         void Resize(int width, int height);
@@ -135,5 +137,7 @@ namespace MxEngine
         TextureHandle GetHDRTexture() const;
         TextureHandle GetSwapHDRTexture1() const;
         TextureHandle GetSwapHDRTexture2() const;
+        TextureHandle GetSwapHalf1() const;
+        TextureHandle GetSwapHalf2() const;
     };
 }

src/Core/Components/Camera/CameraEffects.cpp

@@ -185,13 +185,13 @@ namespace MxEngine
             .property("fog density", &CameraEffects::GetFogDensity, &CameraEffects::SetFogDensity)
             (
                 rttr::metadata(MetaInfo::FLAGS, MetaInfo::SERIALIZABLE | MetaInfo::EDITABLE),
-                rttr::metadata(EditorInfo::EDIT_RANGE, Range{ 0.0f, 10000.0f }),
+                rttr::metadata(EditorInfo::EDIT_RANGE, Range { 0.0f, 10000.0f }),
                 rttr::metadata(EditorInfo::EDIT_PRECISION, 0.01f)
             )
             .property("fog distance", &CameraEffects::GetFogDistance, &CameraEffects::SetFogDistance)
             (
                 rttr::metadata(MetaInfo::FLAGS, MetaInfo::SERIALIZABLE | MetaInfo::EDITABLE),
-                rttr::metadata(EditorInfo::EDIT_RANGE, Range{ 0.0f, 1.0f }),
+                rttr::metadata(EditorInfo::EDIT_RANGE, Range { 0.0f, 1.0f }),
                 rttr::metadata(EditorInfo::EDIT_PRECISION, 0.01f)
             )
             .property("bloom weight", &CameraEffects::GetBloomWeight, &CameraEffects::SetBloomWeight)

src/Core/Components/Camera/CameraEffects.h

@@ -56,6 +56,7 @@ namespace MxEngine
         float bokehRadius = 10.f;
         float focusRange = 5.f;
         float focusDistance = 0.f;
+
     public:
         CameraEffects() = default;
 

src/Core/Components/Camera/CameraGodRay.h

@@ -22,4 +22,4 @@ namespace MxEngine
 		void SetGodRaySampleStep(float value);
 		void SetGodRayAsymmetry(float value);
 	};
-}
+}

src/Core/Components/Camera/CameraLensFlare.cpp

@@ -0,0 +1,95 @@
+#include "CameraLensFlare.h"
+#include "Utilities/Math/Math.h"
+#include "Core/Runtime/Reflection.h"
+
+namespace MxEngine
+{
+    float CameraLensFlare::GetLensFlareScale()const
+    {
+        return this->lensFlareScale;
+    }
+
+    float CameraLensFlare::GetLensFlareBias()const
+    {
+        return this->lensFlareBias;
+    }
+
+    int CameraLensFlare::GetLensFlareNumOfGhosts()const
+    {
+        return this->lensFlareNumOfGhosts;
+    }
+
+    float CameraLensFlare::GetLensFlareGhostDispersal()const
+    {
+        return this->lensFlareGhostDispersal;
+    }
+
+    float CameraLensFlare::GetLensFlareHaloWidth()const
+    {
+        return this->lensFalreHaloWidth;
+    }
+
+    void CameraLensFlare::SetLensFlareScale(float v)
+    {
+        this->lensFlareScale = v;
+    }
+
+    void CameraLensFlare::SetLensFlareBias(float v)
+    {
+        this->lensFlareBias = v;
+    }
+
+    void CameraLensFlare::SetLensFlareNumOfGhosts(int v)
+    {
+        this->lensFlareNumOfGhosts = v;
+    }
+
+    void CameraLensFlare::SetLensFlareGhostDispersal(float v)
+    {
+        this->lensFlareGhostDispersal = v;
+    }
+
+    void CameraLensFlare::SetLensFlareHaloWidth(float v)
+    {
+        this->lensFalreHaloWidth = v;
+    }
+
+    MXENGINE_REFLECT_TYPE
+    {
+        rttr::registration::class_<CameraLensFlare>("CameraLensFlare")
+            (
+                rttr::metadata(MetaInfo::FLAGS, MetaInfo::CLONE_COPY | MetaInfo::CLONE_INSTANCE)
+            )
+            .constructor<>()
+            .property("lens flare scale", &CameraLensFlare::GetLensFlareScale, &CameraLensFlare::SetLensFlareScale)
+            (
+                rttr::metadata(MetaInfo::FLAGS, MetaInfo::SERIALIZABLE | MetaInfo::EDITABLE),
+                rttr::metadata(EditorInfo::EDIT_RANGE, Range { 0.0f, 100.f }),
+                rttr::metadata(EditorInfo::EDIT_PRECISION, 0.01f)
+            )
+            .property("lens flare bias", &CameraLensFlare::GetLensFlareBias, &CameraLensFlare::SetLensFlareBias)
+            (
+                rttr::metadata(MetaInfo::FLAGS, MetaInfo::SERIALIZABLE | MetaInfo::EDITABLE),
+                rttr::metadata(EditorInfo::EDIT_RANGE, Range { -200.0f, 0.f }),
+                rttr::metadata(EditorInfo::EDIT_PRECISION, 0.01f)
+            )
+            .property("lens flare num of ghosts", &CameraLensFlare::GetLensFlareNumOfGhosts, &CameraLensFlare::SetLensFlareNumOfGhosts)
+            (
+                rttr::metadata(MetaInfo::FLAGS, MetaInfo::SERIALIZABLE | MetaInfo::EDITABLE),
+                rttr::metadata(EditorInfo::EDIT_RANGE, Range { 0.0f, 100.f }),
+                rttr::metadata(EditorInfo::EDIT_PRECISION, 0.01f)
+            )
+            .property("lens flare ghost dispersal", &CameraLensFlare::GetLensFlareGhostDispersal, &CameraLensFlare::SetLensFlareGhostDispersal)
+            (
+                rttr::metadata(MetaInfo::FLAGS, MetaInfo::SERIALIZABLE | MetaInfo::EDITABLE),
+                rttr::metadata(EditorInfo::EDIT_RANGE, Range { 0.0f, 100.f }),
+                rttr::metadata(EditorInfo::EDIT_PRECISION, 0.01f)
+            )
+            .property("lens falre halo width", &CameraLensFlare::GetLensFlareHaloWidth, &CameraLensFlare::SetLensFlareHaloWidth)
+            (
+                rttr::metadata(MetaInfo::FLAGS, MetaInfo::SERIALIZABLE | MetaInfo::EDITABLE),
+                rttr::metadata(EditorInfo::EDIT_RANGE, Range { 0.0f, 100.f }),
+                rttr::metadata(EditorInfo::EDIT_PRECISION, 0.01f)
+            );
+    }
+}

src/Core/Components/Camera/CameraLensFlare.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include "Utilities/ECS/Component.h"
+
+
+namespace MxEngine
+{
+	class CameraLensFlare 
+	{
+        MAKE_COMPONENT(CameraLensFlare);
+    private:
+        float lensFlareScale = 1.f;
+        float lensFlareBias = -42;
+        int lensFlareNumOfGhosts = 10;
+        float lensFlareGhostDispersal = 0.13f;
+        float lensFalreHaloWidth = 0.5f;
+        bool lensFlareEnable = true;
+
+    public:
+        CameraLensFlare() = default;
+        float GetLensFlareScale()const;
+        float GetLensFlareBias()const;
+        int GetLensFlareNumOfGhosts()const;
+        float GetLensFlareGhostDispersal()const;
+        float GetLensFlareHaloWidth()const;
+
+        void SetLensFlareScale(float);
+        void SetLensFlareBias(float);
+        void SetLensFlareNumOfGhosts(int);
+        void SetLensFlareGhostDispersal(float);
+        void SetLensFlareHaloWidth(float);
+	};
+}

src/Core/Components/Components.cpp

@@ -86,6 +86,7 @@ namespace MxEngine
     TEMPLATE_INSTANCIATE_COMPONENT(CameraSSGI         );
     TEMPLATE_INSTANCIATE_COMPONENT(CameraSSAO         );
     TEMPLATE_INSTANCIATE_COMPONENT(CameraGodRay       );
+    TEMPLATE_INSTANCIATE_COMPONENT(CameraLensFlare    );
     TEMPLATE_INSTANCIATE_COMPONENT(CameraToneMapping  );
     TEMPLATE_INSTANCIATE_COMPONENT(VRCameraController );
     TEMPLATE_INSTANCIATE_COMPONENT(AudioSource        );
@@ -124,6 +125,7 @@ namespace MxEngine
         RegisterComponent<CameraSSGI         >();
         RegisterComponent<CameraSSAO         >();
         RegisterComponent<CameraGodRay       >();
+        RegisterComponent<CameraLensFlare    >();
         RegisterComponent<CameraToneMapping  >();
         RegisterComponent<VRCameraController >();
         RegisterComponent<AudioSource        >();

src/Core/Components/Components.h

@@ -45,6 +45,7 @@
 #include "Camera/CameraSSGI.h"
 #include "Camera/CameraSSAO.h"
 #include "Camera/CameraGodRay.h"
+#include "Camera/CameraLensFlare.h"
 #include "Camera/InputController.h"
 #include "Camera/VRCameraController.h"
 #include "Audio/AudioListener.h"

src/Core/Rendering/RenderAdaptor.cpp

@@ -43,6 +43,7 @@
 #include "Core/Components/Camera/CameraSSGI.h"
 #include "Core/Components/Camera/CameraSSAO.h"
 #include "Core/Components/Camera/CameraGodRay.h"
+#include "Core/Components/Camera/CameraLensFlare.h"
 #include "Core/Components/Camera/CameraToneMapping.h"
 #include "Core/Components/Lighting/DirectionalLight.h"
 #include "Core/Components/Lighting/PointLight.h"
@@ -329,6 +330,16 @@ namespace MxEngine
             shaderFolder / "dof_combine.glsl"
         );
 
+        environment.Shaders["LensFlare"_id] = AssetManager::LoadShader(
+            shaderFolder / "rect_vertex.glsl",
+            shaderFolder / "lens_flare.glsl"
+        );
+
+        environment.Shaders["LensFlarePrefilter"_id] = AssetManager::LoadShader(
+            shaderFolder / "rect_vertex.glsl",
+            shaderFolder / "lens_flare_prefilter.glsl"
+        );
+
         // compute shaders
         environment.ComputeShaders["Particle"_id] = AssetManager::LoadComputeShader(
             shaderFolder / "particle_compute.glsl"
@@ -391,15 +402,17 @@ namespace MxEngine
                 auto ssgiComponent = object.GetComponent<CameraSSGI>();
                 auto ssaoComponent = object.GetComponent<CameraSSAO>();
                 auto godRayComponent = object.GetComponent<CameraGodRay>();
+                auto lensFlareComponent= object.GetComponent<CameraLensFlare>();
                 Skybox* skybox                 = skyboxComponent.IsValid()      ? skyboxComponent.GetUnchecked()      : nullptr;
                 CameraEffects* effects         = effectsComponent.IsValid()     ? effectsComponent.GetUnchecked()     : nullptr;
                 CameraToneMapping* toneMapping = toneMappingComponent.IsValid() ? toneMappingComponent.GetUnchecked() : nullptr;
                 CameraSSR* ssr                 = ssrComponent.IsValid()         ? ssrComponent.GetUnchecked()         : nullptr;
                 CameraSSGI* ssgi               = ssgiComponent.IsValid()        ? ssgiComponent.GetUnchecked()        : nullptr;
                 CameraSSAO* ssao               = ssaoComponent.IsValid()        ? ssaoComponent.GetUnchecked()        : nullptr;
                 CameraGodRay* godRay           = godRayComponent.IsValid()      ? godRayComponent.GetUnchecked()      : nullptr;
+                CameraLensFlare* lensFlare     = lensFlareComponent.IsValid()   ? lensFlareComponent.GetUnchecked()   : nullptr;
 
-                this->Renderer.SubmitCamera(camera, transform, skybox, effects, toneMapping, ssr, ssgi, ssao, godRay);
+                this->Renderer.SubmitCamera(camera, transform, skybox, effects, toneMapping, ssr, ssgi, ssao, godRay, lensFlare);
                 TrackMainCameraIndex(camera);
             }
         }