Improve lighting, Keep track of frame time

CMakeLists.txt

@@ -14,9 +14,9 @@ if(WIN32)
 	#set(BUILD_SHARED_LIBS OFF)
 endif()
 
-message("Build shared libs: ${BUILD_SHARED_LIBS}")
 message("Debug: ${KEKENGINE_DEBUG}")
 message("Build kekgame: ${KEKENGINE_BUILD_KEKGAME}")
+message("Build with VR support: ${KEKENGINE_VR}")
 message("Target platform: ${KEKENGINE_TARGET_PLATFORM}")
 
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
@@ -118,6 +118,11 @@ if(${KEKENGINE_BUILD_KEKGAME})
 	add_executable(kekgame ${KEKGAME_SOURCE_FILES})
 	add_dependencies(kekgame kekgame_res)
 
+
+	if(WIN32)
+		target_link_options(kekgame PUBLIC -static-libgcc -static-libstdc++ -static)
+	endif()
+
 	target_link_libraries(kekgame PUBLIC kekengine_static)
 	target_include_directories(kekgame PRIVATE "src/kekengine/include")
 endif()

src/kekengine/cpp/engine.cpp

@@ -152,12 +152,13 @@ int init() {
 	glfwSetInputMode(kekData.window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
 
 	glClearColor(0.1f, 0.3f, 0.1f, 0.0f);
-	// glfwSwapInterval(0);
+	glfwSwapInterval(0);
 
 	stbi_set_flip_vertically_on_load(true);
 
 	kekData.activeCamera = new Camera();
 	kekData.shader = new Shader("shader/mesh/vertex.glsl", "shader/mesh/fragment.glsl");
+	kekData.shader->initLighting();
 
 	return KEK_SUCCESS;
 }
@@ -175,29 +176,29 @@ int start() {
 		}
 
 		if(glfwGetKey(kekData.window, GLFW_KEY_W) == GLFW_PRESS) {
-			kekData.activeCamera->translate(kekData.activeCamera->direction * 0.1f);
+			kekData.activeCamera->translate(kekData.activeCamera->direction * KEK_NOCLIP_SPEED * kekData.lastFrameTime);
 		}
 
 		if(glfwGetKey(kekData.window, GLFW_KEY_S) == GLFW_PRESS) {
-			kekData.activeCamera->translate(kekData.activeCamera->direction * -0.1f);
+			kekData.activeCamera->translate(kekData.activeCamera->direction * -KEK_NOCLIP_SPEED * kekData.lastFrameTime);
 		}
 
 		if(glfwGetKey(kekData.window, GLFW_KEY_A) == GLFW_PRESS) {
 			glm::vec3 camRight = glm::normalize(glm::cross(kekData.activeCamera->direction, glm::vec3(0.0f, 1.0f, 0.0f)));
-			kekData.activeCamera->translate(-camRight * 0.1f);
+			kekData.activeCamera->translate(-camRight * KEK_NOCLIP_SPEED * kekData.lastFrameTime);
 		}
 
 		if(glfwGetKey(kekData.window, GLFW_KEY_D) == GLFW_PRESS) {
 			glm::vec3 camRight = glm::normalize(glm::cross(kekData.activeCamera->direction, glm::vec3(0.0f, 1.0f, 0.0f)));
-			kekData.activeCamera->translate(camRight * 0.1f);
+			kekData.activeCamera->translate(camRight * KEK_NOCLIP_SPEED * kekData.lastFrameTime);
 		}
 
 		if(glfwGetKey(kekData.window, GLFW_KEY_SPACE) == GLFW_PRESS) {
-			kekData.activeCamera->translateY(0.1f);
+			kekData.activeCamera->translateY(KEK_NOCLIP_SPEED * kekData.lastFrameTime);
 		}
 
 		if(glfwGetKey(kekData.window, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS) {
-			kekData.activeCamera->translateY(-0.1f);
+			kekData.activeCamera->translateY(-KEK_NOCLIP_SPEED * kekData.lastFrameTime);
 		}
 
 		if(glfwGetKey(kekData.window, GLFW_KEY_ESCAPE) == GLFW_PRESS) {
@@ -217,6 +218,7 @@ int start() {
 		glUniformMatrix4fv(glGetUniformLocation(kekData.shader->id, "projection"), 1, GL_FALSE, glm::value_ptr(projection));
 		glUniform3fv(glGetUniformLocation(kekData.shader->id, "cameraPos"), 1, glm::value_ptr(position));
 
+		if(kekData.shader->lighting) {
 			LightList *lights = kekData.activeScene->lights;
 
 			std::vector<Light *> shaderLights; // TODO: Maybe don't compute on every frame
@@ -241,7 +243,7 @@ int start() {
 			int numPointLights = 0, numDirectionalLights = 0, numSpotLights = 0;
 
 			for(Light *light : shaderLights) {
-			std::string prefix = "lights[" + std::to_string(i) + "].";
+				/*std::string prefix = "lights[" + std::to_string(i) + "].";
 
 				switch(light->getType()) {
 					case LightType::POINT:
@@ -272,14 +274,50 @@ int start() {
 						numSpotLights++;
 						break;
 					}
-			}
+				}*/
 
+				ShaderLight shLight;
+				//shLight.color = light->color;
+				memcpy(shLight.color, glm::value_ptr(light->color), sizeof(shLight.color));
+				switch(light->getType()) {
+					case LightType::POINT:
+					{
+						PointLight *l = (PointLight *) light;
+						memcpy(&shLight.position, glm::value_ptr(l->getPosition()), sizeof(shLight.position));
+						memcpy(&shLight.attenuation, glm::value_ptr(glm::vec3(l->constant, l->linear, l->quadratic)), sizeof(shLight.attenuation));
+						numPointLights++;
+						break;
+					}
+					case LightType::DIRECTIONAL:
+					{
+						DirectionalLight *l = (DirectionalLight *) light;
+						memcpy(&shLight.direction, glm::value_ptr(l->direction), sizeof(shLight.direction));
+						numDirectionalLights++;
+						break;
+					}
+					case LightType::SPOT:
+					{
+						SpotLight *l = (SpotLight *) light;
+						memcpy(&shLight.position, glm::value_ptr(l->getPosition()), sizeof(shLight.position));
+						memcpy(&shLight.direction, glm::value_ptr(l->direction), sizeof(shLight.direction));
+						memcpy(&shLight.attenuation, glm::value_ptr(glm::vec3(l->constant, l->linear, l->quadratic)), sizeof(shLight.attenuation));
+						memcpy(&shLight.cutoff, glm::value_ptr(glm::vec2(glm::cos(l->innerCutoff), glm::cos(l->outerCutoff))), sizeof(shLight.cutoff));
+						numSpotLights++;
+						break;
+					}
+				}
+				kekData.shader->lighting->buffer[i] = shLight;
 				i++;
 			}
 
+			// TODO: Fix broken lights
+			glNamedBufferData(kekData.shader->lighting->ubo, kekData.shader->lighting->blockSize, &kekData.shader->lighting->buffer, GL_DYNAMIC_DRAW);
+			glBindBufferBase(GL_UNIFORM_BUFFER, KEK_UNIFORM_LIGHTS_BINDING, kekData.shader->lighting->ubo);
+
 			glUniform1i(glGetUniformLocation(kekData.shader->id, "numPointLights"), numPointLights);
 			glUniform1i(glGetUniformLocation(kekData.shader->id, "numDirectionalLights"), numDirectionalLights);
 			glUniform1i(glGetUniformLocation(kekData.shader->id, "numSpotLights"), numSpotLights);
+		}
 
 		if(kekData.activeScene) kekData.activeScene->draw(kekData.shader);
 
@@ -289,8 +327,9 @@ int start() {
 
 		auto end = std::chrono::high_resolution_clock::now();
 		std::chrono::duration<float> secsTaken = end - start;
-		// std::cout << "FT: " << secsTaken.count() * 1000 << std::endl;
+		kekData.lastFrameTime = secsTaken.count();
-		// std::cout << "FR: " << (1.0f / secsTaken.count()) << std::endl;
+		std::cout << "FT: " << kekData.lastFrameTime << std::endl;
+		std::cout << "FR: " << (1.0f / kekData.lastFrameTime) << std::endl;
 	}
 
 	return KEK_SUCCESS;

src/kekengine/cpp/mesh.cpp

@@ -33,19 +33,19 @@ Mesh::Mesh(std::vector<Vertex> vertices, std::vector<uint32_t> indices, Material
 	glNamedBufferData(vbo, vertices.size() * sizeof(Vertex), &vertices[0], GL_STATIC_DRAW);
 	glNamedBufferData(ebo, indices.size() * sizeof(unsigned int), &indices[0], GL_STATIC_DRAW);
 
-	glVertexArrayVertexBuffer(vao, 0, vbo, 0, sizeof(Vertex));
+	glVertexArrayVertexBuffer(vao, KEK_MESH_VERTEX_BUFFER_BINDING, vbo, 0, sizeof(Vertex));
 
 	glEnableVertexArrayAttrib(vao, KEK_VERTEX_SHADER_IN_POSITION);
 	glVertexArrayAttribFormat(vao, KEK_VERTEX_SHADER_IN_POSITION, sizeof(float), GL_FLOAT, GL_FALSE, 0);
-	glVertexArrayAttribBinding(vao, KEK_VERTEX_SHADER_IN_POSITION, 0);
+	glVertexArrayAttribBinding(vao, KEK_VERTEX_SHADER_IN_POSITION, KEK_MESH_VERTEX_BUFFER_BINDING);
 
 	glEnableVertexArrayAttrib(vao, KEK_VERTEX_SHADER_IN_NORMAL);
 	glVertexArrayAttribFormat(vao, KEK_VERTEX_SHADER_IN_NORMAL, sizeof(float), GL_FLOAT, GL_FALSE, offsetof(Vertex, normal));
-	glVertexArrayAttribBinding(vao, KEK_VERTEX_SHADER_IN_NORMAL, 0);
+	glVertexArrayAttribBinding(vao, KEK_VERTEX_SHADER_IN_NORMAL, KEK_MESH_VERTEX_BUFFER_BINDING);
 
 	glEnableVertexArrayAttrib(vao, KEK_VERTEX_SHADER_IN_TEXCOORD);
 	glVertexArrayAttribFormat(vao, KEK_VERTEX_SHADER_IN_TEXCOORD, sizeof(float), GL_FLOAT, GL_FALSE, offsetof(Vertex, texCoords));
-	glVertexArrayAttribBinding(vao, KEK_VERTEX_SHADER_IN_TEXCOORD, 0);
+	glVertexArrayAttribBinding(vao, KEK_VERTEX_SHADER_IN_TEXCOORD, KEK_MESH_VERTEX_BUFFER_BINDING);
 
 	glVertexArrayElementBuffer(vao, ebo);
 

src/kekengine/cpp/shader.cpp

@@ -1,6 +1,7 @@
 #include "shader.h"
 #include "types.h"
 #include "resource.h"
+#include "constants.h"
 
 #include <GL/glew.h>
 
@@ -117,6 +118,27 @@ Shader::~Shader() {
 	glDeleteProgram(id);
 }
 
+void Shader::initLighting() {
+	lighting = (LightingData *) calloc(1, sizeof(LightingData));
+	lighting->blockID = glGetUniformBlockIndex(id, "LightInfo");
+	glUniformBlockBinding(id, lighting->blockID, KEK_UNIFORM_LIGHTS_BINDING);
+	glCreateBuffers(1, &lighting->ubo);
+
+	GLenum err = glGetError();
+	if(err != GL_NO_ERROR) {
+		std::cout << "OpenGL error while init lighting: " << err << std::endl;
+		exit(1);
+	}
+
+	glGetActiveUniformBlockiv(id, lighting->blockID, GL_UNIFORM_BLOCK_DATA_SIZE, &lighting->blockSize);
+	std::cout << "Lighting block size: " << lighting->blockSize << std::endl;
+	std::cout << "Light size: " << sizeof(ShaderLight) << std::endl;
+	if(lighting->blockSize != KEK_LIGHT_LIMIT * sizeof(ShaderLight)) {
+		std::cerr << "Lighting block size doesn't match (is " << lighting->blockSize << ", should be " << KEK_LIGHT_LIMIT * sizeof(ShaderLight) << "). Improper padding?" << std::endl;
+		exit(1);
+	}
+}
+
 void Shader::use() {
 	glUseProgram(id);
 }

src/kekengine/include/constants.h

@@ -7,11 +7,17 @@
 #define KEK_VERTEX_SHADER_IN_NORMAL 1
 #define KEK_VERTEX_SHADER_IN_TEXCOORD 2
 
+#define KEK_MESH_VERTEX_BUFFER_BINDING 0
+
+#define KEK_UNIFORM_LIGHTS_BINDING 0
+
+#define KEK_LIGHT_LIMIT 64 // Also in shader/mesh/fragment.glsl
+
+#define KEK_NOCLIP_SPEED 10.0f
+
 #define KEK_CAMERA_NEAR 0.1f
 #define KEK_CAMERA_FAR 100.0f
 
-#define KEK_LIGHT_LIMIT 8 // Also in shader/mesh/fragment.glsl
-
 #define KEK_LIGHT_DEFAULT_AMBIENT_STRENGTH 0.05f
 #define KEK_LIGHT_DEFAULT_SPECULAR_STRENGTH 0.1f
 

src/kekengine/include/internal.h

@@ -25,6 +25,8 @@ struct KekData {
 	int screenWidth;
 	int screenHeight;
 
+	float lastFrameTime;
+
 	std::map<std::string, std::weak_ptr<Texture>> loadedTextures;
 };
 

src/kekengine/include/shader.h

@@ -1,13 +1,41 @@
 #pragma once
 
 #include <string>
+#include <glm/glm.hpp>
+
+#include "constants.h"
 
 namespace kek {
 
+#pragma pack(1)
+struct ShaderLight {
+	float color[3];
+	float pad;
+	float position[3];
+	float pad2;
+	float direction[3];
+	float pad3;
+	float attenuation[3]; // constant, linear, quadratic
+	float pad4;
+	float cutoff[2]; // inner, outer
+	//float lightSpaceMatrix[16]; // mat4
+	float padding[2];
+};
+#pragma pack(0)
+
+// Lighting data for shader
+struct LightingData {
+	unsigned int blockID;
+	int blockSize;
+	unsigned int ubo;
+	ShaderLight buffer[KEK_LIGHT_LIMIT];
+};
+
 class Shader {
 
 public:
 	unsigned int id;
+	LightingData *lighting;
 
 	Shader(std::string vertexPath, std::string fragmentPath);
 
@@ -15,6 +43,8 @@ public:
 
 	~Shader();
 
+	void initLighting();
+
 	void use();
 
 };

src/kekengine/res/shader/include/constants.glsl

@@ -0,0 +1 @@
+#define MAX_LIGHTS 64

src/kekengine/res/shader/include/types.glsl

@@ -7,9 +7,14 @@ struct Material {
 
 struct Light {
 	vec3 color;
+	float pad;
 	vec3 position;
+	float pad2;
 	vec3 direction;
+	float pad3;
 	vec3 attenuation; // constant, linear, quadratic
+	float pad4;
 	vec2 cutoff; // inner, outer
-	mat4 lightSpaceMatrix;
+	//mat4 lightSpaceMatrix;
+	vec2 padding;
 };

src/kekengine/res/shader/mesh/fragment.glsl

@@ -7,8 +7,12 @@ in VS_OUT {
 } fs_in;
 
 !include types.glsl
+!include constants.glsl
+
+layout(std140) uniform LightInfo {
+	Light lights[MAX_LIGHTS];
+};
 
-uniform Light lights[8];
 uniform int numPointLights;
 uniform int numDirectionalLights;
 uniform int numSpotLights;
@@ -26,10 +30,6 @@ const float gamma = 2.2;
 void main() {
 	vec3 normal = normalize(fs_in.normal);
 	vec3 viewDir = normalize(cameraPos - fs_in.fragmentPosition);
-	//color = length(fs_in.fragmentPosition) / 2 * vec4(1.0);
-	//color = vec4(norm, 1.0);
-
-	color = texture(material.diffuse, fs_in.textureCoordinate);
 
 	vec3 result = vec3(0.0);
 

src/kekgame/cpp/kekgame.cpp

@@ -29,8 +29,8 @@ int main(int argc, char **argv) {
 	PointLight *light = new PointLight(glm::vec3(1), 1, 0, 1);
 	scene->lights->add(light);
 
-	DirectionalLight *l = new DirectionalLight(glm::vec3(1), glm::vec3(1, -1, 1));
+	//DirectionalLight *l = new DirectionalLight(glm::vec3(1), glm::vec3(1, -1, 1));
-	scene->lights->add(l);
+	//scene->lights->add(l);
 
 	//SpotLight *spot = new SpotLight(glm::vec3(1), glm::vec3(0, 0, -1), 1, 0, 1, glm::radians(8.0f), glm::radians(15.0f));
 	//spot->moveTo(glm::vec3(0, 0, 5));