Add shadows

project/resources/ShadingDemo.mtl

@@ -1,2 +1,42 @@
 # Blender 4.3.2 MTL File: 'None'
 # www.blender.org
+
+newmtl Material.001
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.800119 0.001607 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.500000
+d 1.000000
+illum 2
+
+newmtl Material.002
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.800149 0.000000 0.387990
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.500000
+d 1.000000
+illum 2
+
+newmtl Material.003
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.003822 0.800111 0.000000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.500000
+d 1.000000
+illum 2
+
+newmtl Material.004
+Ns 250.000000
+Ka 1.000000 1.000000 1.000000
+Kd 0.800000 0.800000 0.800000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.500000
+d 1.000000
+illum 2

project/resources/SuperSimpleDiffuse.fx

@@ -77,26 +77,37 @@ float ShadowCalculation(float4 shadowCoord, float3 normal) {
     // Normalize the depth by dividing by the w component
     float3 projCoord = shadowCoord.xyz / shadowCoord.w;
 
+    float shadow = 0.0;
+    uint width, height;
+    gShadowMap.GetDimensions(width, height);
+    float2 texelSize = float2(1.f / width, 1.f / height);
+
     // Convert from [-1, 1] to [0, 1]
     float2 UVCoords;
     UVCoords.x = 0.5f * projCoord.x + 0.5f;
     UVCoords.y = -0.5f * projCoord.y + 0.5f;
-//     float z = 0.5 * projCoord.z + 0.5;
     float z = projCoord.z;
-    // Sample the shadow map
-    float shadowDepth = gShadowMap.Sample(gShadowSampler2, UVCoords.xy).r;
 
-//     float bias = 0.0025f;
+    float bias = max(0.05 * (1.0 - dot(normal, -gLightDirection)), 0.005);
 
-    float bias = max(0.05 * (1.0 - dot(normal, gLightDirection)), 0.005);
+    for(int x = -1; x <= 1; ++x)
+    {
+        for(int y = -1; y <= 1; ++y)
+        {
+            float pcfDepth = gShadowMap.Sample(gShadowSampler2, UVCoords.xy + float2(x, y) * texelSize).r;
+            shadow += z - bias > pcfDepth ? 1.0 : 0.0;
+        }
+    }
 
-//     return gShadowMap.Sample(gShadowSampler2, UVCoords.xy).r;
+    shadow /= 9.0f;
-    // Check if the current fragment is in shadow
-    if (shadowDepth + bias < z)
-        return 0.5f;
-    else
-        return 1.0f;
 
+//     float shadowDepth = gShadowMap.Sample(gShadowSampler2, UVCoords.xy).r;
+
+
+    if(projCoord.z > 1.0)
+            shadow = 0.0;
+
+    return shadow;
 }
 // Pixel shader
 float4 PS(VS_OUTPUT input) : SV_TARGET {
@@ -104,7 +115,7 @@ float4 PS(VS_OUTPUT input) : SV_TARGET {
 
     float3 diffuseColor = gDiffuseMap.Sample(gSampleState, input.TexCoord).rgb;
 
-    float3 finalColor = float3(1.f, 1.f, 1.f) * shadowFactor;
+    float3 finalColor = diffuseColor * (1 - shadowFactor);
     finalColor += gAmbient;
 
     return float4(finalColor, 1.0f);

project/src/DirectionalLight.cpp

@@ -27,9 +27,11 @@ dae::Matrix DirectionalLight::GetViewMatrix() const {
 dae::Matrix DirectionalLight::GetProjectionMatrix(float nearPlane, float farPlane, float size) const {
     return dae::Matrix::CreateOrthographic(size, size, nearPlane, farPlane);
 }
+
 dae::Matrix DirectionalLight::GetViewProjectionMatrix(float nearPlane, float farPlane, float size) const {
     return GetViewMatrix() * GetProjectionMatrix(nearPlane, farPlane, size);
 }
+
 void DirectionalLight::Update() {
     // If the light position or target changes dynamically, this is where updates would be managed.
 //    m_ViewMatrix = dae::Matrix::CreateLookAtLH(m_Position, m_Target, m_Up);
@@ -43,3 +45,9 @@ dae::Vector3 DirectionalLight::GetTarget() {
 dae::Vector3 DirectionalLight::GetPosition() {
     return m_Position;
 }
+
+void DirectionalLight::SetColor(const dae::ColorRGB &color) { m_Color = color; }
+
+dae::Vector3 DirectionalLight::GetDirection() const { return m_Target - m_Position; }
+
+dae::ColorRGB DirectionalLight::GetColor() const { return m_Color; }

project/src/DirectionalLight.h

@@ -4,6 +4,7 @@
 
 #include "Math/Vector3.h"
 #include "Math/Matrix.h"
+#include "ColorRGB.h"
 
 class DirectionalLight {
 public:
@@ -13,6 +14,7 @@ public:
     void SetPosition(const dae::Vector3 &position);
     void SetTarget(const dae::Vector3 &target);
     void SetUp(const dae::Vector3 &up);
+    void SetColor(const dae::ColorRGB &color);
 
     dae::Matrix GetViewMatrix() const;
     dae::Matrix GetProjectionMatrix(float nearPlane = 0.1f, float farPlane = 100.0f, float size = 50.0f) const;
@@ -22,11 +24,15 @@ public:
 
     dae::Vector3 GetTarget();
     dae::Vector3 GetPosition();
+    dae::Vector3 GetDirection() const;
+    dae::ColorRGB GetColor() const;
 private:
     dae::Vector3 m_Position;
     dae::Vector3 m_Target;
     dae::Vector3 m_Up;
 
+    dae::ColorRGB m_Color{1.f, 1.f, 1.f};
+
     dae::Matrix m_ViewMatrix;
     dae::Matrix m_ProjectionMatrix;
 };

project/src/Effects/BaseEffect.cpp

@@ -54,7 +54,6 @@ ID3DX11Effect *BaseEffect::LoadEffect(ID3D11Device *devicePtr, const std::wstrin
                 ss << errorsPtr[i];
             OutputDebugStringW(ss.str().c_str());
 
-
             errorBlobPtr->Release();
             errorBlobPtr = nullptr;
             return nullptr;

project/src/Effects/ShadowDiffuse.cpp

@@ -60,10 +60,16 @@ ShadowDiffuse::ShadowDiffuse(ID3D11Device *devicePtr, const std::wstring &filePa
     if (!m_LightWorldViewProjVariablePtr->IsValid())
         std::wcout << L"gLightWorldViewProj Matrix is not valid" << std::endl;
 
+    m_LightDirectionVariablePtr = m_EffectPtr->GetVariableByName("gLightDirection")->AsVector();
+    if (!m_LightDirectionVariablePtr->IsValid())
+        std::wcout << L"gLightDirection Vector is not valid" << std::endl;
+
+    m_LightColorVariablePtr = m_EffectPtr->GetVariableByName("gLightColor")->AsVector();
+    if (!m_LightColorVariablePtr->IsValid())
+        std::wcout << L"gLightColor Vector is not valid" << std::endl;
 
     m_UseNormalMapVariablePtr->SetBool(m_UseNormalMap);
 
-
     constexpr int vectorSize{4};
     constexpr float lightDirection[vectorSize]{.577f, -.577f, .577f, 0.f};
     m_LightPosVariablePtr->SetFloatVector(lightDirection);
@@ -112,16 +118,19 @@ ShadowDiffuse::~ShadowDiffuse() {
     m_RasterizerVariablePtr->Release();
     m_RasterizerVariablePtr = nullptr;
 
+    m_LightDirectionVariablePtr->Release();
+    m_LightDirectionVariablePtr = nullptr;
+
     if (m_ShadowMapVariablePtr) {
         m_ShadowMapVariablePtr->Release();
         m_ShadowMapVariablePtr = nullptr;
     }
-
     if (m_LightWorldViewProjVariablePtr) {
         m_LightWorldViewProjVariablePtr->Release();
         m_LightWorldViewProjVariablePtr = nullptr;
     }
 
+
     for (auto sampler: m_SamplerStates) {
         sampler->Release();
     }
@@ -149,7 +158,6 @@ void ShadowDiffuse::SetMaterial(Material* material) {
         m_GlossMapVariablePtr->SetResource(material->glossTexturePtr->GetSrv());
 }
 
-
 void ShadowDiffuse::SetCameraPos(const dae::Vector3 &pos) const {
     m_CameraPosVariablePtr->SetFloatVector(reinterpret_cast<const float *>(&pos));
 }
@@ -231,5 +239,9 @@ void ShadowDiffuse::SetLightViewProjMatrix(Matrix matrix) {
 }
 
 void ShadowDiffuse::SetLightDirection(Vector3 direction) {
-
+    m_LightDirectionVariablePtr->SetFloatVector(reinterpret_cast<const float *>(&direction));
+}
+
+void ShadowDiffuse::SetLightColor(ColorRGB rgb) {
+    m_LightColorVariablePtr->SetFloatVector(reinterpret_cast<const float *>(&rgb));
 }

project/src/Effects/ShadowDiffuse.h

@@ -1,14 +1,9 @@
 #pragma once
 
 #include "BaseEffect.h"
+#include "Effect.h"
 #include <array>
 
-enum class CullMode {
-    None = 0,
-    Front = 1,
-    Back = 2
-};
-
 class ShadowDiffuse final: public BaseEffect {
 public:
     ShadowDiffuse(ID3D11Device *devicePtr, const std::wstring &filePath);
@@ -33,8 +28,9 @@ public:
 
     void SetLightDirection(Vector3 direction);
 
-private:
+    void SetLightColor(ColorRGB rgb);
 
+private:
     void InitSamplers(ID3D11Device* devicePtr);
     void InitRasterizer(ID3D11Device* devicePtr);
 
@@ -48,6 +44,7 @@ private:
     ID3DX11EffectVectorVariable *m_CameraPosVariablePtr{};
     ID3DX11EffectVectorVariable *m_LightPosVariablePtr{};
     ID3DX11EffectVectorVariable *m_LightColorVariablePtr{};
+    ID3DX11EffectVectorVariable *m_LightDirectionVariablePtr{};
 
     ID3DX11EffectScalarVariable *m_UseNormalMapVariablePtr{};
 

project/src/Renderer.h

@@ -28,6 +28,7 @@ enum class SceneNames{
     Diorama,
     Instanced,
     Planet,
+    ShadowTest,
 
     Count
 };

project/src/Scenes/ShadowTestScene.cpp

@@ -16,31 +16,32 @@ void ShadowTestScene::Initialize(ID3D11Device *DevicePtr, ID3D11DeviceContext *D
         assert(true && "Shadow map buffer failed to initialize");
     }
     // Initialize light source
-    m_Light.SetPosition({-20.0f, 30.0f, 0.0f});
+    m_Light.SetPosition({-20.0f, 60.0f, 0.0f});
     m_Light.SetTarget({0, -5, 40});
     m_Light.SetUp({0.0f, 1.0f, 0.0f});
 
     std::vector<VertexIn> vertices{};
     std::vector<uint32_t> indices{};
+
     if(!Utils::ParseOBJNew("resources/ShadingDemo.obj", vertices, indices, true)){
         assert(true && "Model failed to load");
     }
 
     auto material = std::make_shared<Material>();
-//    material->diffuseTexturePtr = Texture::LoadFromFile("resources/vehicle_diffuse.png", DevicePtr);
+    material->diffuseTexturePtr = Texture::LoadFromFile("resources/shadowTestTexture.png", DevicePtr);
 
     auto shadowEffect = new ShadowEffect(DevicePtr, L"resources/shadowEffect.fx");
-    auto otherEffect = new Effect(DevicePtr, L"resources/SuperSimpleDiffuse.fx");
+    auto otherEffect = new ShadowDiffuse(DevicePtr, L"resources/SuperSimpleDiffuse.fx");
 
     auto shadowMesh = new ShadowMesh(DevicePtr, vertices, indices, material, shadowEffect, otherEffect);
-
+//
 
 //    std::vector<std::unique_ptr<Utils::MaterialMesh>> materialMeshes;
 //    Utils::LoadObjWithMaterials("resources/scene.obj", materialMeshes, true, DevicePtr);
 //    for (const auto &mesh: materialMeshes) {
 //        if (mesh->vertices.size() > 0) {
 //            std::shared_ptr<Material> material = std::make_shared<Material>();
-//            BaseEffect *effect = new Effect(DevicePtr, L"resources/SuperSimpleDiffuse.fx");
+//            auto* effect = new ShadowDiffuse(DevicePtr, L"resources/SuperSimpleDiffuse.fx");
 //            ShadowEffect* shadowEffect = new ShadowEffect(DevicePtr, L"resources/shadowEffect.fx");
 //            material->diffuseTexturePtr = Texture::LoadFromFile("./resources/diorama/" + mesh->diffuse_texture, DevicePtr);
 //
@@ -130,12 +131,12 @@ void ShadowTestScene::Render(ID3D11DeviceContext *devicePtr, ID3D11RenderTargetV
 
         auto* effect = dynamic_cast<ShadowMesh*>(mesh)->GetColorEffectPtr() ;
 
-        dynamic_cast<Effect*>(effect)->SetWorldViewProjMatrix(worldViewProj);
+        effect->SetWorldViewProjMatrix(worldViewProj);
-        dynamic_cast<Effect*>(effect)->SetWorldMatrix(mesh->GetWorldMatrix());
+        effect->SetWorldMatrix(mesh->GetWorldMatrix());
-        dynamic_cast<Effect*>(effect)->SetShadowMap(shadowMap);
+        effect->SetShadowMap(shadowMap);
-        dynamic_cast<Effect*>(effect)->SetLightViewProjMatrix(lightWorldViewProj);
+        effect->SetLightViewProjMatrix(lightWorldViewProj);
-
+        effect->SetLightDirection(m_Light.GetDirection());
-
+        effect->SetLightColor(m_Light.GetColor());
         dynamic_cast<ShadowMesh*>(mesh)->RenderFinal(devicePtr, worldViewProj);
     }
 }

project/src/ShadowMesh.cpp

@@ -8,7 +8,7 @@ ShadowMesh::ShadowMesh(ID3D11Device* devicePtr,
                        const std::vector<Uint32>& indices,
                        std::shared_ptr<Material> material,
                        ShadowEffect* shadowEffectPtr,
-                       BaseEffect* colorEffectPtr)
+                       ShadowDiffuse* colorEffectPtr)
         : m_ShadowEffectPtr(shadowEffectPtr),
           m_ColorEffectPtr(colorEffectPtr),
           m_VerticesIn(verticesIn),

project/src/ShadowMesh.h

@@ -7,6 +7,7 @@
 #include "Effects/ShadowEffect.h"
 #include "Material.h"
 #include "Mesh.h"
+#include "Effects/ShadowDiffuse.h"
 
 class ShadowMesh {
 public:
@@ -15,7 +16,7 @@ public:
                const std::vector<Uint32>& indices,
                std::shared_ptr<Material> material,
                ShadowEffect* shadowEffectPtr,
-               BaseEffect* colorEffectPtr);
+               ShadowDiffuse* colorEffectPtr);
 
     ~ShadowMesh();
 
@@ -26,7 +27,7 @@ public:
     Matrix GetWorldMatrix() const;
 
     ShadowEffect* GetShadowEffectPtr(){ return m_ShadowEffectPtr; }
-    BaseEffect* GetColorEffectPtr(){ return m_ColorEffectPtr; }
+    ShadowDiffuse* GetColorEffectPtr(){ return m_ColorEffectPtr; }
 
 
 private:
@@ -34,7 +35,7 @@ private:
     ShadowEffect* m_ShadowEffectPtr;
 
     // Color effect for final render
-    BaseEffect* m_ColorEffectPtr;
+    ShadowDiffuse* m_ColorEffectPtr;
 
     // Buffers
     ID3D11InputLayout* m_InputLayoutPtr;