FakeShemp
84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
#ifndef ShadowPass_h_
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#define ShadowPass_h_
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#include "IRenderer.h"
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#include "FrameBuffer.h"
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#include "ShaderProgram.h"
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#include "../Core/EventBroker.h"
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#include "../Core/World.h"
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#include "ShadowPassState.h"
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#include "imgui/imgui.h"
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#define MAX_SPLITS 5
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//#include "ShadowPassState.h" // not created yet
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enum NearFar { Near = 0, Far = 1 };
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enum LRBT { Left = 0, Right = 1, Bottom = 2, Top = 3 };
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struct ShadowCamera{
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Camera* camera;
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std::array<glm::vec3, 8> frustumCorners;
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};
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class ShadowPass
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{
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public:
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ShadowPass(IRenderer* renderer);
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~ShadowPass();
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void InitializeFrameBuffers();
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void InitializeShaderPrograms();
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void ClearBuffer();
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void Draw(RenderScene& scene);
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GLuint DepthMap() const { return m_DepthMap[m_ShadowLevel]; }
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glm::mat4 lightSpaceMatrix() const { return m_LightSpaceMatrix; }
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glm::mat4 lightP() const { return m_LightProjection; }
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glm::mat4 lightV() const { return m_LightView; }
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void setResolution(GLuint width, GLuint height) { resolutionSizeWidth = width; resolutionSizeHeigth = height; }
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private:
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glm::mat4 CalculateFrustum(RenderScene & scene, std::shared_ptr<DirectionalLightJob> directionalLightJob, glm::mat4& p, glm::mat4& v, ShadowCamera shad_cam);
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glm::vec3 LightDirectionToPoint(glm::vec4 direction);
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std::array<glm::vec3, 8> UpdateFrustumPoints(Camera* cam, glm::vec3 center, glm::vec3 view_dir);
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void UpdateSplitDist(std::array<ShadowCamera, MAX_SPLITS> shadow_cams, float far_distance, float near_distance);
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void InitializeLightCameras();
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glm::mat4 ApplyCropMatrix(ShadowCamera& shadow_cam, glm::mat4 m, glm::mat4 v);
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glm::mat4 FindNewFrustum(ShadowCamera shadow_cam);
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EventBroker* m_EventBroker;
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const IRenderer* m_Renderer;
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std::array<GLuint, MAX_SPLITS> m_DepthMap;
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std::array<FrameBuffer, MAX_SPLITS> m_DepthBuffer;
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ShaderProgram* m_ShadowProgram;
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GLuint m_DepthFBO;
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GLfloat m_NearFarPlane[2] = { -34.f, 27.f };
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//GLfloat m_LRBT[4] = { -77.f, 75.f, -89.f, 89.f };
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GLfloat m_LRBT[4] = { -10.f, 10.f, -10.f, 10.f };
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glm::mat4 m_LightProjection;
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glm::mat4 m_LightView;
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glm::mat4 m_LightSpaceMatrix;
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GLuint resolutionSizeWidth = 1024 * 2;
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GLuint resolutionSizeHeigth = 1024 * 2;
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bool m_ShadowOn = true;
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int m_ShadowLevel = 0;
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int m_CurrentNrOfSplits = 3;
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float m_SplitWeight = 0.75f;
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std::array<ShadowCamera, MAX_SPLITS> m_shadCams;
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};
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#endif |