Merge remote-tracking branch 'origin/master' into SplitSnapshots

include/Engine/Rendering/DrawFinalPass.h

@@ -11,12 +11,13 @@
 #include "Util/UnorderedMapVec2.h"
 #include "Util/CommonFunctions.h"
 #include "Texture.h"
+#include "ShadowPass.h"
 #include "BlurHUD.h"
 
 class DrawFinalPass
 {
 public:
-    DrawFinalPass(IRenderer* renderer, LightCullingPass* lightCullingPass, CubeMapPass* cubeMapPass, SSAOPass* ssaoPass);
+    DrawFinalPass(IRenderer* renderer, LightCullingPass* lightCullingPass, CubeMapPass* cubeMapPass, SSAOPass* ssaoPass, ShadowPass* shadowPass);
 	~DrawFinalPass();
     void InitializeTextures();
     void InitializeFrameBuffers();
@@ -72,6 +73,7 @@ private:
     const LightCullingPass* m_LightCullingPass;
     const CubeMapPass* m_CubeMapPass;
 	const SSAOPass* m_SSAOPass;
+	const ShadowPass* m_ShadowPass;
 
     ShaderProgram* m_ForwardPlusProgram;
     ShaderProgram* m_ExplosionEffectProgram;

include/Engine/Rendering/ExplosionEffectJob.h

@@ -15,8 +15,8 @@
 
 struct ExplosionEffectJob : ModelJob
 {
-    ExplosionEffectJob(ComponentWrapper explosionEffectComponent, ::Model* model, Camera* camera, glm::mat4 matrix, ::RawModel::MaterialProperties matGroup, ComponentWrapper modelComponent, ::World* world, glm::vec4 fillColor, float fillPercentage, bool isShielded)
-        : ModelJob(model, camera, matrix, matGroup, modelComponent, world, fillColor, fillPercentage, isShielded)
+    ExplosionEffectJob(ComponentWrapper explosionEffectComponent, ::Model* model, Camera* camera, glm::mat4 matrix, ::RawModel::MaterialProperties matGroup, ComponentWrapper modelComponent, ::World* world, glm::vec4 fillColor, float fillPercentage, bool isShielded, bool shadow)
+        : ModelJob(model, camera, matrix, matGroup, modelComponent, world, fillColor, fillPercentage, isShielded, shadow)
     {
         ExplosionOrigin = (glm::vec3)explosionEffectComponent["ExplosionOrigin"];
         TimeSinceDeath = (double)explosionEffectComponent["TimeSinceDeath"];

include/Engine/Rendering/FrameBuffer.h

@@ -43,6 +43,16 @@ public:
     ~RenderBuffer();
 };
 
+class Texture2DArray : public ResourceType<GL_TEXTURE_2D_ARRAY>
+{
+public:
+	Texture2DArray(GLuint* resourceHandle, GLenum attachment)
+		: ResourceType(resourceHandle, attachment)
+	{ };
+
+	~Texture2DArray();
+};
+
 class FrameBuffer
 {
 public:

include/Engine/Rendering/ModelJob.h

@@ -19,7 +19,7 @@
 
 struct ModelJob : RenderJob
 {
-    ModelJob(Model* model, Camera* camera, glm::mat4 matrix, ::RawModel::MaterialProperties matProp, ComponentWrapper modelComponent, World* world, glm::vec4 fillColor, float fillPercentage, bool isShielded)
+    ModelJob(Model* model, Camera* camera, glm::mat4 matrix, ::RawModel::MaterialProperties matProp, ComponentWrapper modelComponent, World* world, glm::vec4 fillColor, float fillPercentage, bool isShielded, bool shadow)
         : RenderJob()
     {
         Model = model;
@@ -115,6 +115,7 @@ struct ModelJob : RenderJob
         glm::vec3 worldpos = glm::vec3(camera->ViewMatrix() * glm::vec4(abspos, 1));
         Depth = worldpos.z;
         World = world;
+		Shadow = shadow;
 
         FillColor = fillColor;
         FillPercentage = fillPercentage;
@@ -162,6 +163,8 @@ struct ModelJob : RenderJob
     glm::vec4 FillColor = glm::vec4(0);
     float FillPercentage = 0.0;
 	bool IsShielded;
+	bool Shadow;
+
     void CalculateHash() override
     {
 		Hash = TextureID;

include/Engine/Rendering/Renderer.h

@@ -27,6 +27,7 @@
 #include "TextPass.h"
 #include "Util/CommonFunctions.h"
 #include "Core/PerformanceTimer.h"
+#include "ShadowPass.h"
 
 class Renderer : public IRenderer
 {
@@ -77,6 +78,7 @@ private:
     DrawColorCorrectionPass* m_DrawColorCorrectionPass;
 	SSAOPass* m_SSAOPass;
     CubeMapPass* m_CubeMapPass;
+	ShadowPass* m_ShadowPass;
     BlurHUD* m_BlurHUDPass;
 
     //----------------------Functions----------------------//

include/Engine/Rendering/ShadowPass.h

@@ -0,0 +1,88 @@
+#ifndef ShadowPass_h__
+#define ShadowPass_h__
+
+#include "IRenderer.h"
+#include "FrameBuffer.h"
+#include "ShaderProgram.h"
+#include "../Core/EventBroker.h"
+#include "../Core/World.h"
+#include "ShadowPassState.h"
+#include "imgui/imgui.h"
+
+#define MAX_SPLITS 4
+
+enum NearFar { NEAR = 0, FAR = 1 };
+enum LRBT { LEFT = 0, RIGHT = 1, BOTTOM = 2, TOP = 3 };
+
+struct ShadowFrustum
+{
+	float NearClip;
+	float FarClip;
+	float FOV;
+	float AspectRatio;
+	glm::vec3 MiddlePoint;
+	float Radius;
+	std::array<float, 4> LRBT;
+	std::array<glm::vec3, 8> CornerPoint;
+};
+
+class ShadowPass
+{
+public:
+	ShadowPass(IRenderer* renderer);
+	ShadowPass(IRenderer * renderer, int ShadowResX, int ShadowResY);
+	~ShadowPass();
+
+	void InitializeFrameBuffers();
+	void InitializeShaderPrograms();
+	void ClearBuffer();
+	void Draw(RenderScene& scene);
+
+	void DebugGUI();
+
+	GLuint DepthMap() const { return m_DepthMap; }
+	std::array<glm::mat4, MAX_SPLITS> LightP() const { return m_LightProjection; }
+	std::array<glm::mat4, MAX_SPLITS> LightV() const { return m_LightView; }
+	std::array<float, MAX_SPLITS> FarDistance() const { std::array<float, MAX_SPLITS> f; for (int i = 0; i < MAX_SPLITS; i++) f[i] = m_shadowFrusta[i].FarClip; return f; }
+	int CurrentNrOfSplits() const { return m_CurrentNrOfSplits; }
+
+	void SetSplitWeight(float split_weight) { m_SplitWeight = split_weight; };
+private:
+	void InitializeCameras(RenderScene & scene);
+	void UpdateSplitDist(std::array<ShadowFrustum, MAX_SPLITS>& frusta, float near_distance, float far_distance);
+	void UpdateFrustumPoints(ShadowFrustum& frustum, glm::vec3 camera_position, glm::vec3 view_dir);
+	void UpdateFrustumPoints(ShadowFrustum& frustum, glm::mat4 p, glm::mat4 v);
+
+	void PointsToLightspace(ShadowFrustum& frustum, glm::mat4 v);
+
+	float FindRadius(ShadowFrustum& frustum);
+	void RadiusToLightspace(ShadowFrustum& frustum);
+
+	EventBroker* m_EventBroker;
+	const IRenderer* m_Renderer;
+
+	GLuint m_DepthMap;
+	FrameBuffer m_DepthBuffer;
+    ShaderProgram* m_ShadowProgram;
+    ShaderProgram* m_ShadowProgramSkinned;
+
+	std::array<glm::mat4, MAX_SPLITS> m_LightProjection;
+	std::array<glm::mat4, MAX_SPLITS> m_LightView;
+
+	GLfloat m_NearFarPlane[2] = { -34.f, 27.f };
+	GLuint m_ResolutionSizeWidth = 1024 * 2;
+	GLuint m_ResolutionSizeHeight = 1024 * 2;
+
+	bool m_TransparentObjects = false;
+	bool m_TexturedShadows = false;
+	bool m_EnableShadows = true;
+
+	int m_CurrentNrOfSplits = 4;
+	float m_SplitWeight = 0.962f;
+
+	std::array<ShadowFrustum, MAX_SPLITS> m_shadowFrusta;
+
+	Texture* m_WhiteTexture = ResourceManager::Load<Texture>("Textures/Core/White.png");
+};
+
+#endif

include/Engine/Rendering/ShadowPassState.h

@@ -0,0 +1,15 @@
+#ifndef ShadowPassState_h_
+#define ShadowPassState_h_
+
+#include "Rendering/RenderState.h"
+
+class ShadowPassState : public RenderState
+{
+public:
+	ShadowPassState(GLuint frameBuffer);
+	~ShadowPassState();
+
+private:
+};
+
+#endif