WIP : Add-Shadows

rootex/core/renderer/rendering_device.cpp

@@ -66,6 +66,7 @@ void RenderingDevice::createSwapChainBufferViews()
 void RenderingDevice::createDepthStencil(DXGI_SWAP_CHAIN_DESC& sd, float width, float height)
 {
 	Microsoft::WRL::ComPtr<ID3D11Texture2D> depthStencil = nullptr;
+	Microsoft::WRL::ComPtr<ID3D11Texture2D> shadowTexture = nullptr;
 	D3D11_TEXTURE2D_DESC descDepth = { 0 };
 	descDepth.Width = width;
 	descDepth.Height = height;
@@ -78,13 +79,15 @@ void RenderingDevice::createDepthStencil(DXGI_SWAP_CHAIN_DESC& sd, float width,
 	descDepth.BindFlags = D3D11_BIND_DEPTH_STENCIL | D3D11_BIND_SHADER_RESOURCE;
 
 	GFX_ERR_CHECK(m_Device->CreateTexture2D(&descDepth, nullptr, &depthStencil));
+	GFX_ERR_CHECK(m_Device->CreateTexture2D(&descDepth, nullptr, &shadowTexture));
 
 	D3D11_DEPTH_STENCIL_VIEW_DESC descDSView = {};
 	descDSView.Format = DXGI_FORMAT_D32_FLOAT_S8X24_UINT;
 	descDSView.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2D;
 	descDSView.Texture2D.MipSlice = 0u;
 
 	GFX_ERR_CHECK(m_Device->CreateDepthStencilView(depthStencil.Get(), &descDSView, &m_MainDSV));
+	GFX_ERR_CHECK(m_Device->CreateDepthStencilView(shadowTexture.Get(), &descDSView, &m_ShadowTextureDSV));
 
 	D3D11_SHADER_RESOURCE_VIEW_DESC depthSRVDesc;
 	depthSRVDesc.Format = DXGI_FORMAT_R32_FLOAT_X8X24_TYPELESS;
@@ -93,6 +96,7 @@ void RenderingDevice::createDepthStencil(DXGI_SWAP_CHAIN_DESC& sd, float width,
 	depthSRVDesc.Texture2D.MipLevels = 1;
 
 	GFX_ERR_CHECK(m_Device->CreateShaderResourceView(depthStencil.Get(), &depthSRVDesc, &m_MainDSSRV));
+	GFX_ERR_CHECK(m_Device->CreateShaderResourceView(shadowTexture.Get(), &depthSRVDesc, &m_ShadowTextureDSSRV));
 
 	D3D11_SHADER_RESOURCE_VIEW_DESC stencilSRVDesc;
 	stencilSRVDesc.Format = DXGI_FORMAT_X32_TYPELESS_G8X24_UINT;
@@ -833,6 +837,11 @@ void RenderingDevice::setOffScreenRTVOnly()
 	m_Context->OMSetRenderTargets(1, m_OffScreenRTV.GetAddressOf(), nullptr);
 }
 
+void RenderingDevice::setShadowTextureDSV()
+{
+	m_Context->OMSetRenderTargets(1, m_ShadowTextureDSV.GetAddressOf(), nullptr);
+}
+
 void RenderingDevice::setMainRT()
 {
 	m_Context->OMSetRenderTargets(1, m_MainRTV.GetAddressOf(), nullptr);

rootex/core/renderer/rendering_device.h

@@ -40,11 +40,14 @@ class RenderingDevice
 	Microsoft::WRL::ComPtr<ID3D11RenderTargetView> m_MainRTV;
 	Microsoft::WRL::ComPtr<ID3D11ShaderResourceView> m_MainRTSRV;
 	Microsoft::WRL::ComPtr<ID3D11DepthStencilView> m_MainDSV;
+	Microsoft::WRL::ComPtr<ID3D11DepthStencilView> m_ShadowTextureDSV;
+	Microsoft::WRL::ComPtr<ID3D11ShaderResourceView> m_ShadowTextureDSSRV;
 	Microsoft::WRL::ComPtr<ID3D11ShaderResourceView> m_MainDSSRV;
 	Microsoft::WRL::ComPtr<ID3D11ShaderResourceView> m_MainStencilSRV;
 
 	Microsoft::WRL::ComPtr<ID3D11Texture2D> m_OffScreenTexture;
 	Microsoft::WRL::ComPtr<ID3D11RenderTargetView> m_OffScreenRTV;
+	Microsoft::WRL::ComPtr<ID3D11RenderTargetView> m_ShadowTextureDSV;
 	Microsoft::WRL::ComPtr<ID3D11ShaderResourceView> m_OffScreenSRV;
 
 	Microsoft::WRL::ComPtr<ID3D11DepthStencilState> m_DSState;
@@ -154,6 +157,7 @@ class RenderingDevice
 
 	void setOffScreenRTVDSV();
 	void setOffScreenRTVOnly();
+	void setShadowTextureDSV();
 	void setMainRT();
 	void setRTV(Microsoft::WRL::ComPtr<ID3D11RenderTargetView> rtv);
 	void setRTV(ID3D11RenderTargetView* rtv);

rootex/core/renderer/shaders/custom_vertex_shader.hlsl

@@ -6,6 +6,11 @@ cbuffer CBuf : register(PER_OBJECT_VS_HLSL)
     matrix MInverseTranspose;
 };
 
+cbuffer CBuf : register(PER_FRAME_DL_VS_HLSL)
+{
+    matrix DLTC;
+};
+
 cbuffer CBuf : register(PER_FRAME_VS_HLSL)
 {
     matrix V;

rootex/core/renderer/shaders/register_locations_vertex_shader.h

@@ -4,8 +4,10 @@
 #define PER_FRAME_VS_CPP 2
 #define PER_OBJECT_VS_CPP 3
 #define BONES_VS_CPP 4
+#define PER_FRAME_DL_VS_CPP 5
 
 #define PER_OBJECT_VS_HLSL CONCAT(b, PER_OBJECT_VS_CPP)
+#define PER_FRAME_DL_VS_HLSL CONCAT(b, PER_FRAME_DL_VS_CPP)
 #define PER_FRAME_VS_HLSL CONCAT(b, PER_FRAME_VS_CPP)
 #define PER_CAMERA_CHANGE_VS_HLSL CONCAT(b, PER_CAMERA_CHANGE_VS_CPP)
 #define BONES_VS_HLSL CONCAT(b, BONES_VS_CPP)

rootex/framework/systems/render_system.cpp

@@ -11,6 +11,7 @@
 #include "light_system.h"
 #include "application.h"
 #include "scene_loader.h"
+#include "components/visual/light/directional_light_component.h"
 
 #define LINE_MAX_VERTEX_COUNT 1000
 #define LINE_VERTEX_COUNT 2
@@ -279,6 +280,17 @@ void RenderSystem::submitLine(const Vector3& from, const Vector3& to)
 	m_CurrentFrameLines.m_Indices.push_back(m_CurrentFrameLines.m_Indices.size());
 }
 
+void RenderSystem::setViewMatrixForShadowRender()
+{
+	if (!ECSFactory::GetAllDirectionalLightComponent().empty())
+	{
+		DirectionalLightComponent& first = ECSFactory::GetAllDirectionalLightComponent().front();
+		const Matrix& directionalLight = first.getTransformComponent()->getAbsoluteTransform();
+		RenderingDevice::GetSingleton()->editBuffer(PerFrameVSCB { first.getTransformComponent()->getAbsoluteTransform().Transpose( }, m_PerFrameVSCB.Get());
+		RenderingDevice::GetSingleton()->setVSCB(PER_FRAME_DL_VS_CPP, 1, m_PerFrameVSCB.GetAddressOf());
+	};
+}
+
 void RenderSystem::submitBox(const Vector3& min, const Vector3& max)
 {
 	Vector3 d = max - min;
@@ -395,6 +407,13 @@ void RenderSystem::setPerCameraVSCBs()
 
 void RenderSystem::setPerFrameVSCBs(float fogStart, float fogEnd)
 {
+	if (!ECSFactory::GetAllDirectionalLightComponent().empty())
+	{
+		DirectionalLightComponent& first = ECSFactory::GetAllDirectionalLightComponent().front();
+		RenderingDevice::GetSingleton()->editBuffer(PerFrameVSCB { first.getTransformComponent()->getAbsoluteTransform() }, m_PerFrameVSCB.Get());
+		RenderingDevice::GetSingleton()->setVSCB(PER_FRAME_DL_VS_CPP, 1, m_PerFrameVSCB.GetAddressOf());
+	}
+
 	const Matrix& view = getCamera()->getViewMatrix();
 	RenderingDevice::GetSingleton()->editBuffer(PerFrameVSCB { view.Transpose(), -fogStart, -fogEnd }, m_PerFrameVSCB.Get());
 

rootex/framework/systems/render_system.h

@@ -9,6 +9,7 @@
 #include "components/visual/model/animated_model_component.h"
 #include "components/visual/model/sprite_component.h"
 #include "transform_system.h"
+#include "components/space/transform_component.h"
 
 #include "ASSAO/ASSAO.h"
 
@@ -61,6 +62,10 @@ class RenderSystem : public System
 	void submitCone(const Matrix& transform, const float& height, const float& radius);
 
 	void recoverLostDevice();
+	void getDirectionalLightComponent();
+
+	Matrix m_ViewMatrixForShadowRender;
+	void setViewMatrixForShadowRender();
 
 	void setCamera(CameraComponent* camera);
 	void restoreCamera();