Shadows now working on NVIDIA cards too

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

@@ -18,7 +18,7 @@
 
 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;
@@ -114,6 +114,7 @@ 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;
@@ -182,6 +183,8 @@ struct ModelJob : RenderJob
     glm::vec4 FillColor = glm::vec4(0);
     float FillPercentage = 0.0;
 	bool IsShielded;
+	bool Shadow;
+
     void CalculateHash() override
     {
         Hash = ShaderID << 20 + ModelID << 10 + TextureID;

resources/Schema/Components/Model.xml

@@ -8,5 +8,6 @@
 	<NormalMap>true</NormalMap>
 	<SpecularMap>true</SpecularMap>
 	<GlowMap>true</GlowMap>
+	<Shadow>true</Shadow>
 	<GlowIntensity>3.0</GlowIntensity>
 </Model>

resources/Schema/Components/Model.xsd

@@ -36,6 +36,9 @@
 				<xs:element name="GlowIntensity" type="t:double" minOccurs="0">
 					<xs:annotation><xs:documentation>Intensity of the glow map</xs:documentation></xs:annotation>
 				</xs:element>
+				<xs:element name="Shadow" type="t:bool" minOccurs="0">
+					<xs:annotation><xs:documentation>Whether the object cast/recieve shadows or not</xs:documentation></xs:annotation>
+				</xs:element>
 			</xs:all>
 		</xs:complexType>
 	</xs:element>

resources/Shaders/ExplosionEffect.geom.glsl

@@ -149,9 +149,9 @@ void main()
 			Output.TextureCoordinate = Input[i].TextureCoordinate;
 			Output.Tangent = Input[i].Tangent;
 			Output.BiTangent = Input[i].BiTangent;
-			for (int i = 0; i < MAX_SPLITS; i++)
+			for (int j = 0; j < MAX_SPLITS; j++)
 			{
-				Output.PositionLightSpace[i] = Input[i].PositionLightSpace[i];
+				Output.PositionLightSpace[j] = Input[i].PositionLightSpace[j];
 			}
 			
 			// convert to model space for the gravity to always be in -y
@@ -194,9 +194,9 @@ void main()
 			Output.TextureCoordinate = Input[i].TextureCoordinate;
 			Output.Tangent = Input[i].Tangent;
 			Output.BiTangent = Input[i].BiTangent;
-			for (int i = 0; i < MAX_SPLITS; i++)
+			for (int j = 0; j < MAX_SPLITS; j++)
 			{
-				Output.PositionLightSpace[i] = Input[i].PositionLightSpace[i];
+				Output.PositionLightSpace[j] = Input[i].PositionLightSpace[j];
 			}
 
 			// no change in position, pass through vertex

resources/Shaders/ForwardPlus.frag.glsl

@@ -27,7 +27,7 @@ layout (binding = 2) uniform sampler2D NormalMapTexture;
 layout (binding = 3) uniform sampler2D SpecularMapTexture;
 layout (binding = 4) uniform sampler2D GlowMapTexture;
 layout (binding = 5) uniform samplerCube CubeMap;
-layout (binding = 13) uniform sampler2DArrayShadow DepthMap;
+layout (binding = 30) uniform sampler2DArrayShadow DepthMap;
 
 #define TILE_SIZE 16
 

resources/Shaders/ForwardPlusSplatMapRGB.frag.glsl

@@ -13,6 +13,10 @@ uniform vec4 FillColor;
 uniform vec4 Color;
 uniform vec4 AmbientColor;
 uniform int SSAOQuality;
+uniform float FarDistance[MAX_SPLITS];
+
+layout (binding = 0) uniform sampler2D AOTexture;
+layout (binding = 30) uniform sampler2DArrayShadow DepthMap;
 
 //Get bineded at the same time as the textures
 uniform vec2 DiffuseUVRepeat1;
@@ -27,7 +31,6 @@ uniform vec2 SpecularUVRepeat3;
 uniform vec2 GlowUVRepeat1;
 uniform vec2 GlowUVRepeat2;
 uniform vec2 GlowUVRepeat3;
-layout (binding = 0) uniform sampler2D AOTexture;
 layout (binding = 1) uniform sampler2D SplatMapTexture;
 layout (binding = 2) uniform sampler2D DiffuseTexture1;
 layout (binding = 3) uniform sampler2D DiffuseTexture2;
@@ -95,6 +98,25 @@ struct LightResult {
 	vec4 Specular;
 };
 
+vec2 poissonDisk[16] = vec2[]( 
+	vec2( -0.94201624, -0.39906216 ), 
+	vec2( 0.94558609, -0.76890725 ), 
+	vec2( -0.094184101, -0.92938870 ), 
+	vec2( 0.34495938, 0.29387760 ), 
+	vec2( -0.91588581, 0.45771432 ), 
+	vec2( -0.81544232, -0.87912464 ), 
+	vec2( -0.38277543, 0.27676845 ), 
+	vec2( 0.97484398, 0.75648379 ), 
+	vec2( 0.44323325, -0.97511554 ), 
+	vec2( 0.53742981, -0.47373420 ), 
+	vec2( -0.26496911, -0.41893023 ), 
+	vec2( 0.79197514, 0.19090188 ), 
+	vec2( -0.24188840, 0.99706507 ), 
+	vec2( -0.81409955, 0.91437590 ), 
+	vec2( 0.19984126, 0.78641367 ), 
+	vec2( 0.14383161, -0.14100790 ) 
+	);
+
 float CalcAttenuation(float radius, float dist, float falloff) {
 	return 1.0 - smoothstep(radius * 0.3, radius, dist);
 }
@@ -178,6 +200,154 @@ vec4 CalcBlendedNormal(vec4 blendValue, sampler2D R, sampler2D G, sampler2D B,
 	return vec4(TBN * normalize(Normal_result), 0.0);
 }
 
+// Returns a "random" value.
+float Random(vec3 seed, int i)
+{
+	vec4 seed4 = vec4(seed, i);
+	float dot_product = dot(seed4, vec4(12.9898, 78.233, 45.164, 94.673));
+	return fract(sin(dot_product) * 43758.5453);
+}
+
+int getShadowIndex(float far_distance[1])
+{
+	return 0;
+}
+
+int getShadowIndex(float far_distance[2])
+{
+	float depth = gl_FragCoord.z / gl_FragCoord.w;
+	
+	int index = 1;
+	if ( depth < far_distance[0] )
+	{
+		index = 0;
+	}
+
+	return index;
+}
+
+int getShadowIndex(float far_distance[3])
+{
+	float depth = gl_FragCoord.z / gl_FragCoord.w;
+	
+	int index = 2;
+	if ( depth < far_distance[0] )
+	{
+		index = 0;
+	}
+	else if ( depth < far_distance[1] && depth > far_distance[0] )
+	{
+		index = 1;
+	}
+
+	return index;
+}
+
+int getShadowIndex(float far_distance[4])
+{
+	float depth = gl_FragCoord.z / gl_FragCoord.w;
+	
+	int index = 3;
+	if ( depth < far_distance[0] )
+	{
+		index = 0;
+	}
+	else if ( depth < far_distance[1] && depth > far_distance[0] )
+	{
+		index = 1;
+	}
+	else if ( depth < far_distance[2] && depth > far_distance[1] )
+	{
+		index = 2;
+	}
+
+	return index;
+}
+
+// Standard hardware-calculated PCF method
+float PCFShadow(sampler2DArrayShadow depth_texture_array, vec3 projection_coords, int layer_index)
+{
+	return texture(depth_texture_array, vec4(projection_coords.xy, layer_index, projection_coords.z));
+}
+
+// PCF + Poisson model method
+float PoissonShadow(sampler2DArrayShadow depth_texture_array, vec3 projection_coords, int layer_index, int taps, float spread)
+{
+	int loop;
+	float multiplier = 1.0 / float(taps);
+	float shadowMapDepth;
+	
+    for (int i = 0; i < taps; i++)
+	{
+		loop = i;
+		vec3 newProjCoords = projection_coords + vec3(poissonDisk[loop], 0.0) / (spread * (1.0 + layer_index));
+		shadowMapDepth += multiplier * texture(depth_texture_array, vec4(newProjCoords.xy, layer_index, newProjCoords.z));
+	}
+	
+	return shadowMapDepth;
+}
+
+// PCF + Poisson + RandomSample model method
+float PoissonDotShadow(sampler2DArrayShadow depth_texture_array, vec3 projection_coords, int layer_index, int taps, float spread)
+{
+	int loop;
+	float multiplier = 1.0 / float(taps);
+	float shadowMapDepth;
+	
+    for (int i = 0; i < taps; i++)
+	{
+		loop = int(16.0 * Random(gl_FragCoord.xyy, i)) % 16;
+		vec3 newProjCoords = projection_coords + vec3(poissonDisk[loop], 0.0) / (spread * (1.0 + layer_index));
+		shadowMapDepth += multiplier * texture(depth_texture_array, vec4(newProjCoords.xy, layer_index, newProjCoords.z));
+	}
+	
+	return shadowMapDepth;
+}
+
+// Hardware PCF + Additional software PCF method
+float SoftwarePCF(sampler2DArrayShadow depth_texture_array, vec3 projection_coords, int layer_index, float bias)
+{
+	float shadow = 0.0;
+	
+	vec3 texelSize = 1.0 / textureSize(depth_texture_array, 0);
+	for(int x = -1; x <= 1; x++)
+	{
+		for(int y = -1; y <= 1; y++)
+		{
+			shadow += texture(depth_texture_array, vec4(projection_coords.xy + vec2(x, y) * texelSize.xy / (1.0 + layer_index), layer_index, projection_coords.z)); 
+		}    
+	}
+	
+	return shadow / 9.0;
+}
+
+float CalcShadowValue(vec4 light_space_pos, vec3 normal, vec3 light_dir, sampler2DArrayShadow depth_texture_array, int layer_index)
+{
+	float shadowMapDepth;
+	float bias = 0.005;
+	
+	// Various bias methods.
+	
+	//bias = max(0.05 * (1.0 - dot(normal, light_dir)), bias);
+	//bias = bias * tan(acos(clamp(dot(normal, -light_dir), 0.0, 1.0)));
+	bias = bias + bias * tan(acos(clamp(dot(normal, -light_dir), 0.0, 1.0)));
+	
+	// Calculate coordinates in projection space.
+	
+    vec3 projCoords = vec3(light_space_pos.xy, light_space_pos.z + bias) / light_space_pos.w;
+    projCoords = projCoords * 0.5 + 0.5;
+	//projCoords = (floor(projCoords * 255.0)) / 255.0;
+	
+	// Various methods for shadow calculation in fastest to slowest order.
+	
+	//shadowMapDepth = PCFShadow(depth_texture_array, projCoords, layer_index);
+	//shadowMapDepth = PoissonShadow(depth_texture_array, projCoords, layer_index, 4, 25.0 * FarDistance[MAX_SPLITS - 1]);
+	//shadowMapDepth = PoissonDotShadow(depth_texture_array, projCoords, layer_index, 4, 25.0 * FarDistance[MAX_SPLITS - 1]);
+	shadowMapDepth = SoftwarePCF(depth_texture_array, projCoords, layer_index, bias);
+
+    return shadowMapDepth;
+}
+
 void main()
 {
 	float ao = texelFetch(AOTexture, ivec2(gl_FragCoord.xy) >> int(SSAOQuality), 0).r;
@@ -210,6 +380,8 @@ void main()
 	int start = int(LightGrids.Data[currentTile].Start);
 	int amount = int(LightGrids.Data[currentTile].Amount);
 
+	float shadowFactor = 0.0;
+
 	for(int i = start; i < start + amount; i++) {
 
 		int l = int(LightIndex[i]);
@@ -220,12 +392,17 @@ void main()
 		if(light.Type == 1) { // point
 			light_result = CalcPointLightSource(V * light.Position, light.Radius, light.Color, light.Intensity, viewVec, position, normal, light.Falloff);
 		} else if (light.Type == 2) { //Directional
+			int DepthMapIndex = getShadowIndex(FarDistance);
 			light_result = CalcDirectionalLightSource(V * light.Direction, light.Color, light.Intensity, viewVec, normal);
+			shadowFactor = CalcShadowValue(Input.PositionLightSpace[DepthMapIndex], Input.Normal, vec3(light.Direction), DepthMap, DepthMapIndex);
 		}
 		totalLighting.Diffuse += vec4(light_result.Diffuse.rgb * ao, light_result.Diffuse.a);
 		totalLighting.Specular += vec4(light_result.Specular.rgb * ao, light_result.Specular.a);
 	}
 
+	totalLighting.Diffuse *= vec4(min(vec3(shadowFactor) + AmbientColor.xyz, vec3(1.0)), 1.0);
+	totalLighting.Specular *= vec4(min(vec3(shadowFactor) + AmbientColor.xyz, vec3(1.0)), 1.0);
+
 	vec4 color_result = mix((Color * diffuseTexel * DiffuseColor), Input.ExplosionColor, Input.ExplosionPercentageElapsed);
 	color_result = color_result * (totalLighting.Diffuse + (totalLighting.Specular * specularTexel));
 	//vec4 color_result = (DiffuseColor + Input.ExplosionColor) * (totalLighting.Diffuse + (totalLighting.Specular * specularTexel)) * diffuseTexel * Color;

src/Engine/Editor/EditorRenderSystem.cpp

@@ -54,7 +54,7 @@ void EditorRenderSystem::Update(double dt)
             EntityWrapper entity(m_World, cModel.EntityID);
             glm::mat4 modelMatrix = Transform::ModelMatrix(entity.ID, entity.World);
             for (auto matGroup : model->MaterialGroups()) {
-                std::shared_ptr<ModelJob> modelJob = std::make_shared<ModelJob>(model, scene.Camera, modelMatrix, matGroup, cModel, entity.World, glm::vec4(0), 0.f, false);
+                std::shared_ptr<ModelJob> modelJob = std::make_shared<ModelJob>(model, scene.Camera, modelMatrix, matGroup, cModel, entity.World, glm::vec4(0), 0.f, false, false);
                 if (cModel["Transparent"]) {
                     scene.Jobs.TransparentObjects.push_back(modelJob);
                 } else {

src/Engine/Rendering/DrawFinalPass.cpp

@@ -344,11 +344,10 @@ void DrawFinalPass::DrawModelRenderQueues(std::list<std::shared_ptr<RenderJob>>&
 	glActiveTexture(GL_TEXTURE0);
 	glBindTexture(GL_TEXTURE_2D, m_SSAOPass->SSAOTexture());
 
-	glActiveTexture(GL_TEXTURE13);
+	glActiveTexture(GL_TEXTURE30);
 	if (m_ShadowPass->DepthMap() != NULL) {
 		glBindTexture(GL_TEXTURE_2D_ARRAY, m_ShadowPass->DepthMap());
-	}
-	else {
+	} else {
 		glBindTexture(GL_TEXTURE_2D_ARRAY, m_WhiteTexture->m_Texture);
 	}
 

src/Engine/Rendering/FrameBuffer.cpp

@@ -24,6 +24,13 @@ RenderBuffer::~RenderBuffer()
     }
 }
 
+Texture2DArray::~Texture2DArray()
+{
+	if (m_ResourceHandle != 0) {
+		glDeleteTextures(1, m_ResourceHandle);
+	}
+}
+
 
 FrameBuffer::~FrameBuffer()
 {

src/Engine/Rendering/RenderSystem.cpp

@@ -258,7 +258,8 @@ void RenderSystem::fillModels(RenderScene::Queues &Jobs)
                     m_World, 
                     fillColor, 
                     fillPercentage,
-					isShielded
+					isShielded,
+					false
                 ));
                 if (m_World->HasComponent(cModel.EntityID, "Shield")){
                     explosionEffectJob->CalculateHash();
@@ -296,7 +297,8 @@ void RenderSystem::fillModels(RenderScene::Queues &Jobs)
                     m_World, 
                     fillColor, 
                     fillPercentage,
-					isShielded
+					isShielded,
+					(bool)cModel["Shadow"]
                 ));
                 if (m_World->HasComponent(cModel.EntityID, "Shield")) {
                     modelJob->CalculateHash();

src/Engine/Rendering/ShadowPass.cpp

@@ -131,7 +131,7 @@ void ShadowPass::InitializeFrameBuffers()
 	glBindTexture(GL_TEXTURE_2D_ARRAY, m_DepthMap);
 	glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1, GL_DEPTH_COMPONENT16, m_ResolutionSizeWidth, m_ResolutionSizeHeight, m_CurrentNrOfSplits);
 
-	glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, 0, m_ResolutionSizeWidth, m_ResolutionSizeHeight, m_CurrentNrOfSplits, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, nullptr);
+	//glTexSubImage3D(GL_TEXTURE_2D_ARRAY, 0, 0, 0, 0, m_ResolutionSizeWidth, m_ResolutionSizeHeight, m_CurrentNrOfSplits, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, nullptr);
 
 	glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 	glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
@@ -141,7 +141,7 @@ void ShadowPass::InitializeFrameBuffers()
 	glTexParameterfv(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_BORDER_COLOR, glm::vec4(1.f).data);
 	glTexParameteri(GL_TEXTURE_2D_ARRAY, GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL);
 
-	m_DepthBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2D(&m_DepthMap, GL_DEPTH_ATTACHMENT)));
+	m_DepthBuffer.AddResource(std::shared_ptr<BufferResource>(new Texture2DArray(&m_DepthMap, GL_DEPTH_ATTACHMENT)));
 	m_DepthBuffer.Generate();
 
 	GLERROR("depthMap failed END");
@@ -241,6 +241,10 @@ void ShadowPass::Draw(RenderScene & scene)
 						if (!std::dynamic_pointer_cast<ExplosionEffectJob>(objectJob)) {
 							auto modelJob = std::dynamic_pointer_cast<ModelJob>(objectJob);
 
+							if (!modelJob->Shadow) {
+								continue;
+							}
+
 							glUniformMatrix4fv(glGetUniformLocation(shaderHandle, "M"), 1, GL_FALSE, glm::value_ptr(modelJob->Matrix));
 							glUniform1f(glGetUniformLocation(shaderHandle, "Alpha"), 1.f);
 
@@ -257,6 +261,10 @@ void ShadowPass::Draw(RenderScene & scene)
 							if (!std::dynamic_pointer_cast<ExplosionEffectJob>(objectJob)) {
 								auto modelJob = std::dynamic_pointer_cast<ModelJob>(objectJob);
 
+								if (!modelJob->Shadow) {
+									continue;
+								}
+
 								glUniformMatrix4fv(glGetUniformLocation(shaderHandle, "M"), 1, GL_FALSE, glm::value_ptr(modelJob->Matrix));
 								glUniform1f(glGetUniformLocation(shaderHandle, "Alpha"), modelJob->Color.a);