Merge remote-tracking branch 'origin/master' into SmallFixes-Tobias

# Conflicts:
#	src/Engine/Rendering/DrawFinalPass.cpp

src/Engine/Collision/Collision.cpp

@@ -207,7 +207,7 @@ bool RayVsModel(const Ray& ray,
         glm::vec3 v0 = Transform::TransformPoint(modelVertices[modelIndices[i++]].Position, modelMatrix);
         glm::vec3 v1 = Transform::TransformPoint(modelVertices[modelIndices[i++]].Position, modelMatrix);
         glm::vec3 v2 = Transform::TransformPoint(modelVertices[modelIndices[i++]].Position, modelMatrix);
-        float dist = INFINITY;
+        float dist = outDistance;
         float u;
         float v;
         if (RayVsTriangle(ray, v0, v1, v2, dist, u, v)) {

src/Engine/Collision/CollisionSystem.cpp

@@ -3,24 +3,71 @@
 #include "Core/AABB.h"
 #include "Rendering/Model.h"
 
-void CollisionSystem::UpdateComponent(EntityWrapper& entity, ComponentWrapper& component, double dt)
+void CollisionSystem::UpdateComponent(EntityWrapper& entity, ComponentWrapper& cPhysics, double dt)
 {
-    if (!entity.HasComponent("Physics")) {
+    if (!entity.HasComponent("Collidable")) {
         return;
     }
-    ComponentWrapper& cPhysics = entity["Physics"];
-
     boost::optional<EntityAABB> boundingBox = Collision::EntityAbsoluteAABB(entity);
     if (!boundingBox) {
         return;
     }
     ComponentWrapper& cTransform = entity["Transform"];
     EntityAABB& boxA = *boundingBox;
+    bool everHitTheGround = false;
+
+    glm::vec3 size = boxA.Size();
+    float diameter = std::min(size.x, size.z);
+    glm::vec3 prevOrigin = (glm::vec3)cPhysics["PrevOrigin"];
+    glm::vec3 toCurrentPos = boxA.Origin() - prevOrigin;
+    float rayLength = glm::length(toCurrentPos) + 0.5f*diameter;
+    //If the entity has moved farther than the size of its box, we need to handle it specially.
+    bool traceCollision = rayLength > diameter;
+    //hack solution: If prevOrigin is less than -9000 in all dimensions, 
+    //then it means it is not set, i.e. this is the first collision check for the entity.
+    if (traceCollision && glm::any(glm::greaterThan((glm::vec3)cPhysics["PrevOrigin"], glm::vec3(-9000.f)))) {
+        Ray ray(prevOrigin, toCurrentPos);
+        m_OctreeResult.clear();
+        m_Octree->ObjectsPossiblyHitByRay(ray, m_OctreeResult);
+        for (auto& boxB : m_OctreeResult) {
+            if (boxA.Entity == boxB.Entity) {
+                continue;
+            }
+            bool hit;
+            float dist;
+            if (boxB.Entity.HasComponent("Model")) {
+                RawModel* model;
+                std::string res = (std::string)boxB.Entity["Model"]["Resource"];
+                try {
+                    model = ResourceManager::Load<RawModel, true>(res);
+                } catch (const std::exception&) {
+                    continue;
+                }
+                float u, v;
+                hit = Collision::RayVsModel(ray, model->Vertices(), model->m_Indices, Transform::ModelMatrix(boxB.Entity), dist, u, v);
+            } else {
+                hit = Collision::RayVsAABB(ray, boxB, dist);
+            }
+            if (hit && dist < rayLength) {
+                //Set the entity to where it was colliding, minus the maximum box size. 
+                //TODO: Perhaps this should be done slightly more properly.
+                glm::vec3 newOriginPos = ray.Origin() + (dist - 0.707107f*diameter) * ray.Direction();
+                glm::vec3 resolve = newOriginPos - boxA.Origin();
+                (glm::vec3&)cTransform["Position"] += resolve;
+                boxA = *Collision::EntityAbsoluteAABB(entity);
+                if (resolve.y > 0) {
+                    everHitTheGround = true;
+                    (bool)cPhysics["IsOnGround"] = true;
+                    ((glm::vec3&)cPhysics["Velocity"]).y = 0.f;
+                }
+                break;
+            }
+        }
+    }
 
     // Collide against octree items
     m_OctreeResult.clear();
     m_Octree->ObjectsInSameRegion(*boundingBox, m_OctreeResult);
-    bool everHitTheGround = false;
     for (auto& boxB : m_OctreeResult) {
         glm::vec3 resolutionVector;
         if (boxA.Entity == boxB.Entity) {
@@ -64,4 +111,6 @@ void CollisionSystem::UpdateComponent(EntityWrapper& entity, ComponentWrapper& c
     if (!everHitTheGround) {
         (bool)cPhysics["IsOnGround"] = false;
     }
+
+    (glm::vec3&)cPhysics["PrevOrigin"] = boxA.Origin();
 }

src/Engine/Core/ComponentPool.cpp

@@ -1,7 +1,5 @@
 #include "Core/ComponentPool.h"
 
-
-
 ComponentWrapper ComponentPoolForwardIterator::operator*() const
 {
     char* data = &(*m_MemoryPoolIterator);
@@ -32,6 +30,34 @@ ComponentPoolForwardIterator& ComponentPoolForwardIterator::operator++()
     return *this;
 }
 
+ComponentPool::ComponentPool(const ComponentPool& other)
+    : m_ComponentInfo(other.m_ComponentInfo)
+    , m_Pool(other.m_Pool)
+    , m_EntityToComponent()
+{
+    // Update EntityToComponent pointers
+    for (char& ptr : m_Pool) {
+        EntityID entity = *reinterpret_cast<EntityID*>(&ptr);
+        m_EntityToComponent[entity] = &ptr;
+    }
+
+    // Duplicate strings
+    for (auto& name : m_ComponentInfo.StringFields) {
+        for (auto& c : *this) {
+            std::string& val = c[name];
+            ComponentWrapper::SolidifyStrings(c);
+        }
+    }
+}
+
+ComponentPool::~ComponentPool()
+{
+    // Destroy component data
+    for (auto& c : *this) {
+        ComponentWrapper::Destroy(c.Info, c.Data);
+    }
+}
+
 //const ::ComponentInfo& ComponentPool::ComponentInfo() const
 //{
 //    return m_ComponentInfo;
@@ -39,10 +65,19 @@ ComponentPoolForwardIterator& ComponentPoolForwardIterator::operator++()
 
 ComponentWrapper ComponentPool::Allocate(EntityID entity)
 {
+    // Allocate pool data
     char* data = m_Pool.Allocate();
+    // Copy EntityID
     memcpy(data, &entity, sizeof(EntityID));
+
     m_EntityToComponent[entity] = data;
-    return ComponentWrapper(m_ComponentInfo, data);
+    ComponentWrapper component(m_ComponentInfo, data);
+
+    // Copy defaults
+    memcpy(component.Data, m_ComponentInfo.Defaults.get(), m_ComponentInfo.Stride);
+    ComponentWrapper::SolidifyStrings(component);
+
+    return component;
 }
 
 ComponentWrapper ComponentPool::GetByEntity(EntityID ent)
@@ -57,6 +92,7 @@ bool ComponentPool::KnowsEntity(EntityID ent)
 
 void ComponentPool::Delete(ComponentWrapper& wrapper)
 {
+    ComponentWrapper::Destroy(wrapper.Info, wrapper.Data);
     m_EntityToComponent.erase(wrapper.EntityID);
     m_Pool.Free(wrapper.Data - sizeof(EntityID));
 }

src/Engine/Core/EntityFilePreprocessor.cpp

@@ -185,6 +185,9 @@ void EntityFilePreprocessor::parseComponentInfo()
             field.Offset = fieldOffset;
             field.Stride = stride;
             compInfo.FieldsInOrder.push_back(name);
+            if (field.Type == "string") {
+                compInfo.StringFields.push_back(name);
+            }
             fieldOffset += stride;
         }
 
@@ -201,7 +204,7 @@ void EntityFilePreprocessor::parseDefaults()
 
     for (auto& ci : m_ComponentInfo) {
         // Allocate memory for default values
-        ci.second.Defaults = std::shared_ptr<char>(new char[ci.second.Stride]);
+        ci.second.Defaults = boost::shared_array<char>(new char[ci.second.Stride], std::bind(&ComponentWrapper::Destroy, ci.second, std::placeholders::_1));
         memset(ci.second.Defaults.get(), 0, ci.second.Stride);
 
         std::string componentName = ci.first;

src/Engine/Core/World.cpp

@@ -9,7 +9,20 @@ World::~World()
     }
 }
 
-EntityID World::CreateEntity(EntityID parent /*= 0*/)
+World::World(const World& other)
+    : m_EventBroker(other.m_EventBroker)
+    , m_CurrentEntityID(other.m_CurrentEntityID)
+    , m_EntityParents(other.m_EntityParents)
+    , m_EntityChildren(other.m_EntityChildren)
+    , m_EntityNames(other.m_EntityNames)
+{
+    // Deep copy component pools
+    for (auto& kv : other.m_ComponentPools) {
+        m_ComponentPools[kv.first] = new ComponentPool(*kv.second);
+    }
+}
+
+EntityID World::CreateEntity(EntityID parent /*= EntityID_Invalid*/)
 {
     EntityID newEntity = generateEntityID();
     if (newEntity == parent) {
@@ -44,10 +57,8 @@ ComponentWrapper World::AttachComponent(EntityID entity, const std::string& comp
     ComponentPool* pool = m_ComponentPools.at(componentType);
     const ComponentInfo& ci = pool->ComponentInfo();
 
-    // Allocate space for the component
+    // Allocate component with default values
     ComponentWrapper c = pool->Allocate(entity);
-    // Write default values
-    memcpy(c.Data, ci.Defaults.get(), ci.Stride);
 
     return c;
 }

src/Engine/Network/Client.cpp

@@ -437,11 +437,12 @@ void Client::parsePlayerDamage(Packet& packet)
 {
     Events::PlayerDamage e;
     PlayerID victimID = packet.ReadPrimitive<EntityID>();
-    if(serverClientMapsHasEntity(victimID)){
+    PlayerID inflictorID = packet.ReadPrimitive<EntityID>();
+    if(!serverClientMapsHasEntity(victimID) || !serverClientMapsHasEntity(inflictorID)){
         return;
     }
     e.Inflictor = EntityWrapper(m_World, m_ServerIDToClientID.at(victimID));
-    e.Victim = EntityWrapper(m_World, m_ServerIDToClientID.at(packet.ReadPrimitive<EntityID>()));
+    e.Victim = EntityWrapper(m_World, m_ServerIDToClientID.at(inflictorID));
     e.Damage = packet.ReadPrimitive<double>();
     // Don't rebroadcast our own player damage events or we'll have an infinite loop!
     if (e.Inflictor != m_LocalPlayer) {

src/Engine/Network/Server.cpp

@@ -84,7 +84,6 @@ void Server::Update()
     if (isReadingData) {
         Network::Update();
     }
-
 }
 
 void Server::parseMessageType(Packet& packet)

src/Engine/Rendering/DrawBloomPass.cpp

@@ -19,16 +19,20 @@ void DrawBloomPass::InitializeTextures()
 void DrawBloomPass::InitializeShaderPrograms()
 {
     m_GaussianProgram_horiz = ResourceManager::Load<ShaderProgram>("##GaussianProgramHoriz");
-    m_GaussianProgram_horiz->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Gaussian_horiz.vert.glsl")));
-    m_GaussianProgram_horiz->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Gaussian_horiz.frag.glsl")));
-    m_GaussianProgram_horiz->Compile();
-    m_GaussianProgram_horiz->Link();
+	if (m_GaussianProgram_horiz->GetHandle() == 0) {
+		m_GaussianProgram_horiz->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Gaussian_horiz.vert.glsl")));
+		m_GaussianProgram_horiz->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Gaussian_horiz.frag.glsl")));
+		m_GaussianProgram_horiz->Compile();
+		m_GaussianProgram_horiz->Link();
+	}
 
-    m_GaussianProgram_vert = ResourceManager::Load<ShaderProgram>("##GaussianProgramVert");
-    m_GaussianProgram_vert->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Gaussian_vert.vert.glsl")));
-    m_GaussianProgram_vert->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Gaussian_vert.frag.glsl")));
-    m_GaussianProgram_vert->Compile();
-    m_GaussianProgram_vert->Link();
+	m_GaussianProgram_vert = ResourceManager::Load<ShaderProgram>("##GaussianProgramVert");
+	if (m_GaussianProgram_vert->GetHandle() == 0) {
+		m_GaussianProgram_vert->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/Gaussian_vert.vert.glsl")));
+		m_GaussianProgram_vert->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/Gaussian_vert.frag.glsl")));
+		m_GaussianProgram_vert->Compile();
+		m_GaussianProgram_vert->Link();
+	}
 }
 
 
@@ -71,15 +75,12 @@ void DrawBloomPass::Draw(GLuint texture)
     //Horizontal pass, first use the given texture then save it to the horizontal framebuffer.
     m_GaussianFrameBuffer_horiz.Bind();
     m_GaussianProgram_horiz->Bind();
-
     glActiveTexture(GL_TEXTURE0);
     glBindTexture(GL_TEXTURE_2D, texture);
-
     glBindVertexArray(m_ScreenQuad->VAO);
     glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ScreenQuad->ElementBuffer);
     glDrawElementsBaseVertex(GL_TRIANGLES, m_ScreenQuad->MaterialGroups()[0].material->EndIndex - m_ScreenQuad->MaterialGroups()[0].material->StartIndex +1
         , GL_UNSIGNED_INT, 0, m_ScreenQuad->MaterialGroups()[0].material->StartIndex);
-
     //Iterate some times to make it more gaussian.
     for (int i = 1; i < m_iterations; i++) {
         //Vertical pass
@@ -92,7 +93,6 @@ void DrawBloomPass::Draw(GLuint texture)
         glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ScreenQuad->ElementBuffer);
         glDrawElementsBaseVertex(GL_TRIANGLES, m_ScreenQuad->MaterialGroups()[0].material->EndIndex - m_ScreenQuad->MaterialGroups()[0].material->StartIndex +1
             , GL_UNSIGNED_INT, 0, m_ScreenQuad->MaterialGroups()[0].material->StartIndex);
-
         //horizontal pass
 
         m_GaussianFrameBuffer_horiz.Bind();
@@ -112,7 +112,6 @@ void DrawBloomPass::Draw(GLuint texture)
     m_GaussianProgram_vert->Bind();
 
     glBindTexture(GL_TEXTURE_2D, m_GaussianTexture_horiz);
-
     glBindVertexArray(m_ScreenQuad->VAO);
     glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ScreenQuad->ElementBuffer);
     glDrawElementsBaseVertex(GL_TRIANGLES, m_ScreenQuad->MaterialGroups()[0].material->EndIndex - m_ScreenQuad->MaterialGroups()[0].material->StartIndex +1

src/Engine/Rendering/DrawFinalPass.cpp

@@ -27,6 +27,7 @@ void DrawFinalPass::InitializeFrameBuffers()
     glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height);
     GLERROR("RenderBuffer generation");
 
+
     GenerateTexture(&m_SceneTexture, GL_CLAMP_TO_EDGE, GL_LINEAR, glm::vec2(m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height), GL_RGB16F, GL_RGB, GL_FLOAT);
     //GenerateTexture(&m_BloomTexture, GL_CLAMP_TO_EDGE, GL_LINEAR, glm::vec2(m_Renderer->GetViewPortSize().Width, m_Renderer->GetViewPortSize().Height), GL_RGB16F, GL_RGB, GL_FLOAT);
     GenerateTexture(&m_BloomTexture, GL_CLAMP_TO_EDGE, GL_LINEAR, glm::vec2(m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height), GL_RGB16F, GL_RGB, GL_FLOAT);
@@ -173,26 +174,26 @@ void DrawFinalPass::InitializeShaderPrograms()
     GLERROR("Creating DepthFill program");
 }
 
-void DrawFinalPass::Draw(RenderScene& scene)
+void DrawFinalPass::Draw(RenderScene& scene, GLuint SSAOTexture)
 {
     GLERROR("Pre");
-
     DrawFinalPassState* state = new DrawFinalPassState(m_FinalPassFrameBuffer.GetHandle());
     if (scene.ClearDepth) {
-        glClear(GL_DEPTH_BUFFER_BIT);
+        //glClear(GL_DEPTH_BUFFER_BIT);
+		state->Disable(GL_DEPTH_TEST);
+		state->DepthMask(GL_FALSE);
     }
     //TODO: Do we need check for this or will it be per scene always?
     glClearStencil(0x00);
     glClear(GL_STENCIL_BUFFER_BIT);
 
     //Fill depth buffer
-
-
+	
     state->StencilMask(0x00);
-    DrawModelRenderQueues(scene.Jobs.OpaqueObjects, scene);
+    DrawModelRenderQueues(scene.Jobs.OpaqueObjects, scene, SSAOTexture);
     GLERROR("OpaqueObjects");
     state->BlendFunc(GL_ONE, GL_ONE);
-    DrawModelRenderQueues(scene.Jobs.TransparentObjects, scene);
+    DrawModelRenderQueues(scene.Jobs.TransparentObjects, scene, SSAOTexture);
     GLERROR("TransparentObjects");
     state->BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
     DrawSprites(scene.Jobs.SpriteJob, scene);
@@ -208,11 +209,11 @@ void DrawFinalPass::Draw(RenderScene& scene)
     //Draw Opaque shielded objects
     state->StencilFunc(GL_NOTEQUAL, 1, 0xFF);
     state->StencilMask(0x00);
-    DrawModelRenderQueues(scene.Jobs.OpaqueShieldedObjects, scene); //might need changing
+    DrawModelRenderQueues(scene.Jobs.OpaqueShieldedObjects, scene, SSAOTexture); //might need changing
     GLERROR("Shielded Opaque object");
 
     //Draw Transparen Shielded objects
-    DrawModelRenderQueues(scene.Jobs.TransparentShieldedObjects, scene); //might need changing
+    DrawModelRenderQueues(scene.Jobs.TransparentShieldedObjects, scene, SSAOTexture); //might need changing
     GLERROR("Shielded Transparent objects");
 
     GLERROR("END");
@@ -243,14 +244,14 @@ void DrawFinalPass::Draw(RenderScene& scene)
     DrawShieldToStencilBuffer(scene.Jobs.ShieldObjects, scene);
     GLERROR("StencilPass");
 
-    glClear(GL_DEPTH_BUFFER_BIT);
+    //glClear(GL_DEPTH_BUFFER_BIT);
 
     stateLowRes->Enable(GL_DEPTH_TEST);
     stateLowRes->StencilFunc(GL_LEQUAL, 1, 0xFF);
     stateLowRes->StencilMask(0x00);
-    DrawModelRenderQueues(scene.Jobs.OpaqueObjects, scene);
+    DrawModelRenderQueues(scene.Jobs.OpaqueObjects, scene, SSAOTexture);
     GLERROR("OpaqueObjects");
-    DrawModelRenderQueues(scene.Jobs.TransparentObjects, scene);
+    DrawModelRenderQueues(scene.Jobs.TransparentObjects, scene, SSAOTexture);
     GLERROR("TransparentObjects");
     glViewport(0, 0, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height);
     glScissor(0, 0, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height);
@@ -323,7 +324,7 @@ void DrawFinalPass::GenerateMipMapTexture(GLuint* texture, GLenum wrapping, glm:
     GLERROR("MipMap Texture initialization failed");
 }
 
-void DrawFinalPass::DrawModelRenderQueues(std::list<std::shared_ptr<RenderJob>>& jobs, RenderScene& scene)
+void DrawFinalPass::DrawModelRenderQueues(std::list<std::shared_ptr<RenderJob>>& jobs, RenderScene& scene, GLuint SSAOTexture)
 {
     GLuint forwardHandle = m_ForwardPlusProgram->GetHandle();
     GLERROR("forwardHandle");
@@ -346,6 +347,9 @@ void DrawFinalPass::DrawModelRenderQueues(std::list<std::shared_ptr<RenderJob>>&
     glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, m_LightCullingPass->LightGridSSBO());
     glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 4, m_LightCullingPass->LightIndexSSBO());
 
+	glActiveTexture(GL_TEXTURE0);
+	glBindTexture(GL_TEXTURE_2D, SSAOTexture);
+
     for (auto &job : jobs) {
         auto explosionEffectJob = std::dynamic_pointer_cast<ExplosionEffectJob>(job);
         if (explosionEffectJob) {
@@ -692,14 +696,14 @@ void DrawFinalPass::DrawSprites(std::list<std::shared_ptr<RenderJob>>&jobs, Rend
             glUniform4fv(glGetUniformLocation(shaderHandle, "FillColor"), 1, glm::value_ptr(spriteJob->FillColor));
             glUniform1f(glGetUniformLocation(shaderHandle, "FillPercentage"), spriteJob->FillPercentage);
 
-            glActiveTexture(GL_TEXTURE0);
+            glActiveTexture(GL_TEXTURE1);
             if (spriteJob->DiffuseTexture != nullptr) {
                 glBindTexture(GL_TEXTURE_2D, spriteJob->DiffuseTexture->m_Texture);
             } else {
                 glBindTexture(GL_TEXTURE_2D, m_ErrorTexture->m_Texture);
             }
 
-            glActiveTexture(GL_TEXTURE1);
+            glActiveTexture(GL_TEXTURE2);
             if (spriteJob->IncandescenceTexture != nullptr) {
                 glBindTexture(GL_TEXTURE_2D, spriteJob->IncandescenceTexture->m_Texture);
             } else {
@@ -809,7 +813,7 @@ void DrawFinalPass::BindExplosionTextures(GLuint shaderHandle, std::shared_ptr<E
 	case RawModel::MaterialType::SingleTextures:
 	case RawModel::MaterialType::Basic:
 	{
-		glActiveTexture(GL_TEXTURE0);
+		glActiveTexture(GL_TEXTURE1);
 		if (job->DiffuseTexture.size() > 0 && job->DiffuseTexture[0]->Texture != nullptr) {
 			glBindTexture(GL_TEXTURE_2D, job->DiffuseTexture[0]->Texture->m_Texture);
 			glUniform2fv(glGetUniformLocation(shaderHandle, "DiffuseUVRepeat"), 1, glm::value_ptr(job->DiffuseTexture[0]->UVRepeat));
@@ -819,7 +823,7 @@ void DrawFinalPass::BindExplosionTextures(GLuint shaderHandle, std::shared_ptr<E
 			glUniform2fv(glGetUniformLocation(shaderHandle, "DiffuseUVRepeat"), 1, glm::value_ptr(glm::vec2(1.0f, 1.0f)));
 		}
 
-		glActiveTexture(GL_TEXTURE1);
+		glActiveTexture(GL_TEXTURE2);
 		if (job->NormalTexture.size() > 0 && job->NormalTexture[0]->Texture != nullptr) {
 			glBindTexture(GL_TEXTURE_2D, job->NormalTexture[0]->Texture->m_Texture);
 			glUniform2fv(glGetUniformLocation(shaderHandle, "NormalUVRepeat"), 1, glm::value_ptr(job->NormalTexture[0]->UVRepeat));
@@ -829,7 +833,7 @@ void DrawFinalPass::BindExplosionTextures(GLuint shaderHandle, std::shared_ptr<E
 			glUniform2fv(glGetUniformLocation(shaderHandle, "NormalUVRepeat"), 1, glm::value_ptr(glm::vec2(1.0f, 1.0f)));
 		}
 
-		glActiveTexture(GL_TEXTURE2);
+		glActiveTexture(GL_TEXTURE3);
 		if (job->SpecularTexture.size() > 0 && job->SpecularTexture[0]->Texture != nullptr) {
 			glBindTexture(GL_TEXTURE_2D, job->SpecularTexture[0]->Texture->m_Texture);
 			glUniform2fv(glGetUniformLocation(shaderHandle, "SpecularUVRepeat"), 1, glm::value_ptr(job->SpecularTexture[0]->UVRepeat));
@@ -839,7 +843,7 @@ void DrawFinalPass::BindExplosionTextures(GLuint shaderHandle, std::shared_ptr<E
 			glUniform2fv(glGetUniformLocation(shaderHandle, "SpecularUVRepeat"), 1, glm::value_ptr(glm::vec2(1.0f, 1.0f)));
 		}
 
-		glActiveTexture(GL_TEXTURE3);
+		glActiveTexture(GL_TEXTURE4);
 		if (job->IncandescenceTexture.size() > 0 && job->IncandescenceTexture[0]->Texture != nullptr) {
 			glBindTexture(GL_TEXTURE_2D, job->IncandescenceTexture[0]->Texture->m_Texture);
 			glUniform2fv(glGetUniformLocation(shaderHandle, "GlowUVRepeat"), 1, glm::value_ptr(job->IncandescenceTexture[0]->UVRepeat));
@@ -852,7 +856,7 @@ void DrawFinalPass::BindExplosionTextures(GLuint shaderHandle, std::shared_ptr<E
 	}
 	case RawModel::MaterialType::SplatMapping:
 	{
-		glActiveTexture(GL_TEXTURE0);
+		glActiveTexture(GL_TEXTURE1);
 		glBindTexture(GL_TEXTURE_2D, job->SplatMap->Texture->m_Texture);
 
 		int texturePosition = GL_TEXTURE1;
@@ -927,7 +931,7 @@ void DrawFinalPass::BindModelTextures(GLuint shaderHandle, std::shared_ptr<Model
 		case RawModel::MaterialType::SingleTextures:
 		case RawModel::MaterialType::Basic:
 		{
-			glActiveTexture(GL_TEXTURE0);
+			glActiveTexture(GL_TEXTURE1);
 			if (job->DiffuseTexture.size() > 0 && job->DiffuseTexture[0]->Texture != nullptr) {
 				glBindTexture(GL_TEXTURE_2D, job->DiffuseTexture[0]->Texture->m_Texture);
 				glUniform2fv(glGetUniformLocation(shaderHandle, "DiffuseUVRepeat"), 1, glm::value_ptr(job->DiffuseTexture[0]->UVRepeat));
@@ -937,7 +941,7 @@ void DrawFinalPass::BindModelTextures(GLuint shaderHandle, std::shared_ptr<Model
 				glUniform2fv(glGetUniformLocation(shaderHandle, "DiffuseUVRepeat"), 1, glm::value_ptr(glm::vec2(1.0f, 1.0f)));
 			}
 
-			glActiveTexture(GL_TEXTURE1);
+			glActiveTexture(GL_TEXTURE2);
 			if (job->NormalTexture.size() > 0 && job->NormalTexture[0]->Texture != nullptr) {
 				glBindTexture(GL_TEXTURE_2D, job->NormalTexture[0]->Texture->m_Texture);
 				glUniform2fv(glGetUniformLocation(shaderHandle, "NormalUVRepeat"), 1, glm::value_ptr(job->NormalTexture[0]->UVRepeat));
@@ -947,7 +951,7 @@ void DrawFinalPass::BindModelTextures(GLuint shaderHandle, std::shared_ptr<Model
 				glUniform2fv(glGetUniformLocation(shaderHandle, "NormalUVRepeat"), 1, glm::value_ptr(glm::vec2(1.0f, 1.0f)));
 			}
 
-			glActiveTexture(GL_TEXTURE2);
+			glActiveTexture(GL_TEXTURE3);
 			if (job->SpecularTexture.size() > 0 && job->SpecularTexture[0]->Texture != nullptr) {
 				glBindTexture(GL_TEXTURE_2D, job->SpecularTexture[0]->Texture->m_Texture);
 				glUniform2fv(glGetUniformLocation(shaderHandle, "SpecularUVRepeat"), 1, glm::value_ptr(job->SpecularTexture[0]->UVRepeat));
@@ -957,7 +961,7 @@ void DrawFinalPass::BindModelTextures(GLuint shaderHandle, std::shared_ptr<Model
 				glUniform2fv(glGetUniformLocation(shaderHandle, "SpecularUVRepeat"), 1, glm::value_ptr(glm::vec2(1.0f, 1.0f)));
 			}
 
-			glActiveTexture(GL_TEXTURE3);
+			glActiveTexture(GL_TEXTURE4);
 			if (job->IncandescenceTexture.size() > 0 && job->IncandescenceTexture[0]->Texture != nullptr) {
 				glBindTexture(GL_TEXTURE_2D, job->IncandescenceTexture[0]->Texture->m_Texture);
 				glUniform2fv(glGetUniformLocation(shaderHandle, "GlowUVRepeat"), 1, glm::value_ptr(job->IncandescenceTexture[0]->UVRepeat));
@@ -970,10 +974,10 @@ void DrawFinalPass::BindModelTextures(GLuint shaderHandle, std::shared_ptr<Model
 		}
 		case RawModel::MaterialType::SplatMapping:
 		{
-			glActiveTexture(GL_TEXTURE0);
+			glActiveTexture(GL_TEXTURE1);
 			glBindTexture(GL_TEXTURE_2D, job->SplatMap->Texture->m_Texture);
 
-			int texturePosition = GL_TEXTURE1;
+			int texturePosition = GL_TEXTURE2;
 		
 			//Bind 5 diffuse textures
 			std::string UniformName = "DiffuseUVRepeat";

src/Engine/Rendering/PickingPass.cpp

@@ -25,11 +25,20 @@ void PickingPass::InitializeTextures()
 
 void PickingPass::InitializeFrameBuffers()
 {
-    glGenRenderbuffers(1, &m_DepthBuffer);
+   /* glGenRenderbuffers(1, &m_DepthBuffer);
     glBindRenderbuffer(GL_RENDERBUFFER, m_DepthBuffer);
-    glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height);
+    glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height);*/
 
-    m_PickingBuffer.AddResource(std::shared_ptr<BufferResource>(new RenderBuffer(&m_DepthBuffer, GL_DEPTH_ATTACHMENT)));
+	glGenTextures(1, &m_DepthBuffer);
+
+	glBindTexture(GL_TEXTURE_2D, m_DepthBuffer);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH24_STENCIL8, (int)(m_Renderer->GetViewportSize().Width), (int)(m_Renderer->GetViewportSize().Height), 0, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, nullptr);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
+
+    m_PickingBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_DepthBuffer, GL_DEPTH_ATTACHMENT)));
     m_PickingBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_PickingTexture, GL_COLOR_ATTACHMENT0)));
     m_PickingBuffer.Generate();
 }
@@ -63,7 +72,9 @@ void PickingPass::Draw(RenderScene& scene)
     m_PickingProgram->Bind();
 
     if (scene.ClearDepth) {
-        glClear(GL_DEPTH_BUFFER_BIT);
+        //glClear(GL_DEPTH_BUFFER_BIT);
+		state->Disable(GL_DEPTH_TEST);
+		state->DepthMask(GL_FALSE);
     }
     m_Camera = scene.Camera;
 

src/Engine/Rendering/Renderer.cpp

@@ -108,7 +108,15 @@ void Renderer::Update(double dt)
 
 void Renderer::Draw(RenderFrame& frame)
 {
-    ImGui::Combo("Draw textures", &m_DebugTextureToDraw, "Final\0Scene\0Bloom\0SceneLowRes\0BloomLowRes\0Gaussian\0Picking");
+    ImGui::Combo("Draw textures", &m_DebugTextureToDraw, "Final\0Scene\0Bloom\0SceneLowRes\0BloomLowRes\0Gaussian\0Picking\0Ambient Occlusion");
+
+	ImGui::SliderFloat("SSAO sample radius", &m_SSAO_Radius, 0.01f, 5.0f);
+	ImGui::SliderFloat("SSAO bias", &m_SSAO_Bias, 0.0f, 0.1f);
+	ImGui::SliderFloat("SSAO contrast", &m_SSAO_Contrast, 0.0f, 10.0f);
+	ImGui::SliderFloat("SSAO IntensityScale", &m_SSAO_IntensityScale, 0.0f, 10.0f);
+	ImGui::SliderInt("SSAO Number of Samples", &m_SSAO_NumOfSamples, 2, 100);
+	ImGui::SliderInt("SSAO Number of Turns", &m_SSAO_NumOfTurns, 0, 50);
+	m_SSAOPass->Setting(m_SSAO_Radius, m_SSAO_Bias, m_SSAO_Contrast, m_SSAO_IntensityScale, m_SSAO_NumOfSamples, m_SSAO_NumOfTurns);
     //clear buffer 0
     glClearColor(0.f, 0.f, 0.f, 0.f);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -119,15 +127,21 @@ void Renderer::Draw(RenderFrame& frame)
     m_DrawFinalPass->ClearBuffer();
     m_DrawBloomPass->ClearBuffer();
     PerformanceTimer::StopTimer("Renderer-ClearBuffers");
-
+	for (auto scene : frame.RenderScenes) {
+		PerformanceTimer::StartTimer("Renderer-Depth");
+		m_PickingPass->Draw(*scene);
+		GLERROR("Drawing pickingpass");
+		PerformanceTimer::StopTimer("Renderer-Depth");
+	}
+	PerformanceTimer::StartTimer("AO generation");
+	m_SSAOPass->Draw(m_PickingPass->DepthBuffer(), frame.RenderScenes.front()->Camera);
+	GLuint ao = m_SSAOPass->SSAOTexture();
+	PerformanceTimer::StopTimer("AO generation");
     for (auto scene : frame.RenderScenes){
         
-        PerformanceTimer::StartTimer("Renderer-Depth");
+        PerformanceTimer::StartTimer("Renderer-Drawing PickingPass");
         SortRenderJobsByDepth(*scene);
         GLERROR("SortByDepth");
-        PerformanceTimer::StartTimerAndStopPrevious("Renderer-Drawing PickingPass");
-        m_PickingPass->Draw(*scene);
-        GLERROR("Drawing pickingpass");
         PerformanceTimer::StartTimerAndStopPrevious("Renderer-Generate Frustrums");
         m_LightCullingPass->GenerateNewFrustum(*scene);
         GLERROR("Generate frustums");
@@ -137,8 +151,8 @@ void Renderer::Draw(RenderFrame& frame)
         PerformanceTimer::StartTimerAndStopPrevious("Renderer-Light Culling");
         m_LightCullingPass->CullLights(*scene);
         GLERROR("LightCulling");
+		m_DrawFinalPass->Draw(*scene, ao);
         PerformanceTimer::StartTimerAndStopPrevious("Renderer-Draw Geometry+Light");
-        m_DrawFinalPass->Draw(*scene);
         GLERROR("Draw Geometry+Light");
         //m_DrawScenePass->Draw(*scene);
 
@@ -147,14 +161,17 @@ void Renderer::Draw(RenderFrame& frame)
         GLERROR("Draw Text");
         PerformanceTimer::StopTimer("Renderer-Draw Text");
     }
+
     PerformanceTimer::StartTimer("Renderer-Draw Bloom");
     m_DrawBloomPass->Draw(m_DrawFinalPass->BloomTexture());
     PerformanceTimer::StopTimer("Renderer-Draw Bloom");
+
     if (m_DebugTextureToDraw == 0) {
         PerformanceTimer::StartTimer("Renderer-Color Correction Pass");
         m_DrawColorCorrectionPass->Draw(m_DrawFinalPass->SceneTexture(), m_DrawBloomPass->GaussianTexture(), m_DrawFinalPass->SceneTextureLowRes(), m_DrawFinalPass->BloomTextureLowRes(), frame.Gamma, frame.Exposure);
         PerformanceTimer::StopTimer("Renderer-Color Correction Pass");
     }
+
     PerformanceTimer::StartTimer("Renderer-Misc Debug Draws");
     if (m_DebugTextureToDraw == 1) {
         m_DrawScreenQuadPass->Draw(m_DrawFinalPass->SceneTexture());
@@ -174,7 +191,10 @@ void Renderer::Draw(RenderFrame& frame)
     if (m_DebugTextureToDraw == 6) {
         m_DrawScreenQuadPass->Draw(m_PickingPass->PickingTexture());
     }
-    PerformanceTimer::StopTimer("Renderer-Misc Debug Draws");
+	if (m_DebugTextureToDraw == 7) {
+		m_DrawScreenQuadPass->Draw(m_SSAOPass->SSAOTexture());
+	}
+	PerformanceTimer::StopTimer("Renderer-Misc Debug Draws");
 
     PerformanceTimer::StartTimer("Renderer-ImGuiRenderPass");
     m_ImGuiRenderPass->Draw();
@@ -223,4 +243,5 @@ void Renderer::InitializeRenderPasses()
     m_DrawScreenQuadPass = new DrawScreenQuadPass(this);
     m_DrawBloomPass = new DrawBloomPass(this);
     m_DrawColorCorrectionPass = new DrawColorCorrectionPass(this);
+	m_SSAOPass = new SSAOPass(this);
 }

src/Engine/Rendering/SSAOPass.cpp

@@ -0,0 +1,141 @@
+#include "Rendering/SSAOPass.h"
+
+SSAOPass::SSAOPass(IRenderer* renderer)
+{
+	m_Renderer = renderer;
+
+	m_ScreenQuad = ResourceManager::Load<Model>("Models/Core/ScreenQuad.mesh");
+
+	InitializeBuffer();
+	InitializeShaderProgram();
+	Setting(0.1f, 0.012f, 1.0f, 1.0f, 13, 7);
+
+	m_DrawBloomPass = new DrawBloomPass(renderer);
+}
+
+void SSAOPass::InitializeShaderProgram()
+{
+	m_SSAOProgram = ResourceManager::Load<ShaderProgram>("##SSAOProgram");
+	m_SSAOProgram->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/SSAO.vert.glsl")));
+	m_SSAOProgram->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/SSAO.frag.glsl")));
+	m_SSAOProgram->Compile();
+	m_SSAOProgram->Link();
+
+	m_SSAOViewSpaceZProgram = ResourceManager::Load<ShaderProgram>("##SSAOViewSpaceZProgram");
+	m_SSAOViewSpaceZProgram->AddShader(std::shared_ptr<Shader>(new VertexShader("Shaders/SSAO.vert.glsl")));
+	m_SSAOViewSpaceZProgram->AddShader(std::shared_ptr<Shader>(new FragmentShader("Shaders/SSAOViewSpaceZ.frag.glsl")));
+	m_SSAOViewSpaceZProgram->Compile();
+	m_SSAOViewSpaceZProgram->Link();
+}
+
+
+void SSAOPass::InitializeBuffer()
+{
+	GenerateTexture(&m_SSAOTexture, GL_CLAMP_TO_EDGE, GL_LINEAR, glm::vec2(m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height), GL_R8, GL_RED, GL_FLOAT);
+
+	m_SSAOFramBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_SSAOTexture, GL_COLOR_ATTACHMENT0)));
+	m_SSAOFramBuffer.Generate();
+
+	GenerateTexture(&m_SSAOViewSpaceZTexture, GL_CLAMP_TO_EDGE, GL_LINEAR, glm::vec2(m_Renderer->GetViewportSize().Width, m_Renderer->GetViewportSize().Height), GL_R32F, GL_RED, GL_FLOAT);
+
+	m_SSAOViewSpaceZFramBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_SSAOViewSpaceZTexture, GL_COLOR_ATTACHMENT0)));
+	m_SSAOViewSpaceZFramBuffer.Generate();
+}
+
+void SSAOPass::ClearBuffer()
+{
+	m_SSAOFramBuffer.Bind();
+	glClearColor(0.f, 0.f, 0.f, 0.f);
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+	m_SSAOFramBuffer.Unbind();
+
+	m_SSAOViewSpaceZFramBuffer.Bind();
+	glClearColor(0.f, 0.f, 0.f, 0.f);
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+	m_SSAOViewSpaceZFramBuffer.Unbind();
+}
+
+void SSAOPass::Setting(float radius, float bias, float contrast, float intensityScale, int numOfSamples, int NumOfTurns) {
+	m_Radius = radius;
+	m_Bias = bias;
+	m_Contrast = contrast;
+	m_IntensityScale = intensityScale;
+	m_NumOfSamples = numOfSamples;
+	m_NumOfTurns = NumOfTurns;
+}
+
+void SSAOPass::GenerateTexture(GLuint* texture, GLenum wrapping, GLenum filtering, glm::vec2 dimensions, GLint internalFormat, GLint format, GLenum type) const
+{
+	glGenTextures(1, texture);
+	glBindTexture(GL_TEXTURE_2D, *texture);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, wrapping);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, wrapping);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filtering);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filtering);
+	glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, dimensions.x, dimensions.y, 0, format, type, nullptr);
+	GLERROR("Texture initialization failed");
+}
+
+void SSAOPass::Draw(GLuint depthBuffer, Camera* camera)
+{
+	SSAOPassState state;
+	GLuint viewSpaceZPShaderHandle = m_SSAOViewSpaceZProgram->GetHandle();
+	GLuint SSAOShaderHandle = m_SSAOProgram->GetHandle();
+
+	m_SSAOViewSpaceZFramBuffer.Bind();
+	m_SSAOViewSpaceZProgram->Bind();
+
+	glActiveTexture(GL_TEXTURE0);
+	glBindTexture(GL_TEXTURE_2D, depthBuffer);
+	glm::vec3 clipInfo = glm::vec3(
+		(camera->NearClip() * camera->FarClip()),
+		(camera->NearClip() - camera->FarClip()),
+		(camera->FarClip())
+		);
+	/*glm::vec3 clipInfo = glm::vec3(
+		(camera->NearClip()),
+		(-1.0f),
+		(+1.0f)
+		);*/
+	glUniform3fv(glGetUniformLocation(viewSpaceZPShaderHandle, "ClipInfo"), 1, glm::value_ptr(clipInfo));
+
+	glBindVertexArray(m_ScreenQuad->VAO);
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ScreenQuad->ElementBuffer);
+	glDrawElementsBaseVertex(GL_TRIANGLES, m_ScreenQuad->MaterialGroups()[0].material->EndIndex - m_ScreenQuad->MaterialGroups()[0].material->StartIndex + 1
+		, GL_UNSIGNED_INT, 0, m_ScreenQuad->MaterialGroups()[0].material->StartIndex);
+	
+	glm::vec4 projInfo = glm::vec4(
+		((1.0 - camera->ProjectionMatrix()[0][2]) / camera->ProjectionMatrix()[0][0]),
+		(-2.0 / (m_Renderer->GetViewportSize().Width * camera->ProjectionMatrix()[0][0])),
+		((1.0 + camera->ProjectionMatrix()[1][2]) / camera->ProjectionMatrix()[1][1]),
+		(-2.0 / (m_Renderer->GetViewportSize().Height * camera->ProjectionMatrix()[1][1]))
+		);
+
+
+	m_SSAOFramBuffer.Bind();
+	m_SSAOProgram->Bind();
+
+	glActiveTexture(GL_TEXTURE0);
+	glBindTexture(GL_TEXTURE_2D, m_SSAOViewSpaceZTexture);
+
+	// How many pixel there are in a 1m long object 1m away from the camera
+	glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uProjScale"), m_Renderer->GetViewportSize().Height / (-2.0f * glm::tan(camera->FOV() * 0.5f)));
+
+	glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uRadius"), m_Radius);
+	glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uBias"), m_Bias);
+	glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uContrast"), m_Contrast);
+	glUniform1f(glGetUniformLocation(SSAOShaderHandle, "uIntensityScale"), m_IntensityScale);
+	glUniform1i(glGetUniformLocation(SSAOShaderHandle, "uNumOfSamples"), m_NumOfSamples);
+	glUniform1i(glGetUniformLocation(SSAOShaderHandle, "uNumOfTurns"), m_NumOfTurns);;
+
+	glUniform4fv(glGetUniformLocation(SSAOShaderHandle, "uProjInfo"), 1, glm::value_ptr(projInfo));
+	glDrawElementsBaseVertex(GL_TRIANGLES, m_ScreenQuad->MaterialGroups()[0].material->EndIndex - m_ScreenQuad->MaterialGroups()[0].material->StartIndex + 1
+		, GL_UNSIGNED_INT, 0, m_ScreenQuad->MaterialGroups()[0].material->StartIndex);
+
+	m_DrawBloomPass->ClearBuffer();
+	m_DrawBloomPass->Draw(m_SSAOTexture);
+}
+
+void ComputeAO(GLuint depthBuffer, Camera* camera) {
+
+}

src/Engine/Rendering/SSAOPassState.cpp

@@ -0,0 +1,16 @@
+#include "Rendering/SSAOPassState.h"
+
+
+SSAOPassState::SSAOPassState()
+{
+	//BindFramebuffer(0);
+	Disable(GL_BLEND);
+	Disable(GL_DEPTH_TEST);
+	Disable(GL_CULL_FACE);
+}
+
+SSAOPassState::~SSAOPassState()
+{
+
+}
+

src/Engine/Rendering/ShaderProgram.cpp

@@ -98,8 +98,7 @@ void ShaderProgram::AddShader(std::shared_ptr<Shader> shader)
 
 void ShaderProgram::Compile()
 {
-	if (m_ShaderProgramHandle == 0)
-	{
+	if (m_ShaderProgramHandle == 0)	{
 		m_ShaderProgramHandle = glCreateProgram();
 	}