create multiple suns

grk/project/shaders/shader_9_1.frag

@@ -9,11 +9,8 @@ uniform vec3 cameraPos;
 
 uniform vec3 color;
 
-//uniform vec3 sunDir;
+uniform vec3 lightPositions[100];
-//uniform vec3 sunColor;
+uniform vec3 lightColors[100];
-
-uniform vec3 lightPos;
-uniform vec3 lightColor;
 
 uniform vec3 spotlightPos;
 uniform vec3 spotlightColor;
@@ -32,7 +29,7 @@ out vec4 outColor;
 
 
 in vec3 viewDirTS;
-in vec3 lightDirTS;
+in vec3 lightDirTS[4];
 in vec3 spotlightDirTS;
 in vec3 sunDirTS;
 
@@ -74,13 +71,11 @@ vec3 fresnelSchlick(float cosTheta, vec3 F0){
 vec3 PBRLight(vec3 lightDir, vec3 radiance, vec3 normal, vec3 V){
 	float diffuse=max(0,dot(normal,lightDir));
 
-	//vec3 V = normalize(cameraPos-worldPos);
 	vec3 F0 = vec3(0.04); 
     F0 = mix(F0, color, metallic);
 
     vec3 H = normalize(V + lightDir);    
         
-    // cook-torrance brdf
     float NDF = DistributionGGX(normal, H, roughness);        
     float G   = GeometrySmith(normal, V, lightDir, roughness);      
     vec3 F    = fresnelSchlick(max(dot(H, V), 0.0), F0);       
@@ -93,7 +88,6 @@ vec3 PBRLight(vec3 lightDir, vec3 radiance, vec3 normal, vec3 V){
     float denominator = 4.0 * max(dot(normal, V), 0.0) * max(dot(normal, lightDir), 0.0) + 0.0001;
     vec3 specular     = numerator / denominator;  
             
-    // add to outgoing radiance Lo
     float NdotL = max(dot(normal, lightDir), 0.0);   
 	return (kD * color / PI + specular) * radiance * NdotL;
 }
@@ -101,35 +95,29 @@ vec3 PBRLight(vec3 lightDir, vec3 radiance, vec3 normal, vec3 V){
 
 void main()
 {
-	//vec3 normal = vec3(0,0,1);
     vec3 normal = normalize(vecNormal);
 
-    //vec3 viewDir = normalize(viewDirTS);
     vec3 viewDir = normalize(cameraPos-worldPos);
 
-	//vec3 lightDir = normalize(lightDirTS);
+    vec3 lightDirs[4];
-	vec3 lightDir = normalize(lightPos-worldPos);
+    vec3 ambient = AMBIENT * color;
+    vec3 ilumination = ambient;
+
+    for (int i = 0; i < 100; ++i) {
+        lightDirs[i] = normalize(lightPositions[i] - worldPos);
+        vec3 attenuatedlightColor = lightColors[i] / pow(length(lightPositions[i] - worldPos), 2);
+        ilumination = ilumination+PBRLight(lightDirs[i], attenuatedlightColor * 300, normal, viewDir);
+    }
 
 	
-	vec3 ambient = AMBIENT*color;
-	vec3 attenuatedlightColor = lightColor/pow(length(lightPos-worldPos),2);
-	vec3 ilumination;
-	ilumination = ambient+PBRLight(lightDir,attenuatedlightColor * 300,normal,viewDir);
 
-	//flashlight
-	//vec3 spotlightDir= normalize(spotlightDirTS);
 	vec3 spotlightDir= normalize(spotlightPos-worldPos);
 	
 
     float angle_atenuation = clamp((dot(-normalize(spotlightPos-worldPos),spotlightConeDir)-0.5)*3,0,1);
-	attenuatedlightColor = angle_atenuation*spotlightColor/pow(length(spotlightPos-worldPos),2);
+	vec3 attenuatedlightColor = angle_atenuation*spotlightColor/pow(length(spotlightPos-worldPos),2);
 	ilumination=ilumination+PBRLight(spotlightDir,attenuatedlightColor,normal,viewDir);
 
-	//sun
-	//ilumination=ilumination+PBRLight(sunDir,sunColor,normal,viewDir);
-
     
 	outColor = vec4(vec3(1.0) - exp(-ilumination*exposition),1);
-	//outColor = vec4(roughness,metallic,0,1);
-    //outColor = vec4(test;
 }

grk/project/shaders/shader_9_1.vert

@@ -12,15 +12,13 @@ uniform mat4 modelMatrix;
 out vec3 vecNormal;
 out vec3 worldPos;
 
-uniform vec3 lightPos;
+uniform vec3 lightsPositions[100];
 uniform vec3 spotlightPos;
 uniform vec3 cameraPos;
-//uniform vec3 sunDir;
 
 out vec3 viewDirTS;
-out vec3 lightDirTS;
+out vec3 lightDirTS[100];
 out vec3 spotlightDirTS;
-//out vec3 sunDirTS;
 
 void main()
 {
@@ -34,10 +32,12 @@ void main()
 	
 	vec3 V = normalize(cameraPos-worldPos);
 	viewDirTS = TBN*V;
-	vec3 L = normalize(lightPos-worldPos);
+
-	lightDirTS = TBN*L;
+	for (int i = 0; i < 100; ++i) {
+        vec3 L = normalize(lightsPositions[i]-worldPos);
+		lightDirTS[i] = TBN*L;
+    }
+	
 	vec3 SL = normalize(spotlightPos-worldPos);
 	spotlightDirTS = TBN*SL;
-	//sunDirTS = TBN*sunDir;
-
 }

grk/project/src/Render_Utils.cpp

@@ -166,22 +166,20 @@ void Core::drawObjectPBR(Core::RenderContext& context, glm::mat4 modelMatrix, gl
 
     glUniform3f(glGetUniformLocation(program, "cameraPos"), spaceship->cameraPos.x, spaceship->cameraPos.y, spaceship->cameraPos.z);
 
-
-    const int NUM_LIGHTS = 23;
-
-    glm::vec3 lightsPositions[NUM_LIGHTS];
-    glm::vec3 lightsColors[NUM_LIGHTS];
-    glm::vec3 lightsDirections[NUM_LIGHTS];
-
-    /*glUniform3f(glGetUniformLocation(program, "sunDir"), sun.sunDir.x, sun.sunDir.y, sun.sunDir.z);
-    glUniform3f(glGetUniformLocation(program, "sunColor"), sun.sunColor.x, sun.sunColor.y, sun.sunColor.z);*/
-
     std::list<Sun*>* suns = GameUtils::getInstance()->getSuns();
-    glm::vec3 firstSunPos = suns->front()->getPosition();
-    glm::vec3 firstSunColor = suns->front()->getColor();
 
-    glUniform3f(glGetUniformLocation(program, "lightPos"), firstSunPos.x, firstSunPos.y, firstSunPos.z);
+    glm::vec3 lightsPositions[100];
-    glUniform3f(glGetUniformLocation(program, "lightColor"), firstSunColor.x, firstSunColor.y, firstSunColor.z);
+    glm::vec3 lightsColors[100];
+
+    int i = 0;
+    for (Sun* sun : *suns) {
+        lightsPositions[i] = sun->getPosition();
+        lightsColors[i] = sun->getColor();
+        ++i;
+    }
+
+    glUniform3fv(glGetUniformLocation(program, "lightPositions"), 100, glm::value_ptr(lightsPositions[0]));
+    glUniform3fv(glGetUniformLocation(program, "lightColors"), 100, glm::value_ptr(lightsColors[0]));
 
     glUniform3f(glGetUniformLocation(program, "spotlightConeDir"), spaceship->spotlightConeDir.x, spaceship->spotlightConeDir.y, spaceship->spotlightConeDir.z);
     glUniform3f(glGetUniformLocation(program, "spotlightPos"), spaceship->spotlightPos.x, spaceship->spotlightPos.y, spaceship->spotlightPos.z);

grk/project/src/Render_Utils.h

@@ -73,6 +73,5 @@ namespace Core
 
 	glm::mat4 createPerspectiveMatrix();
 	void drawObjectPBR(Core::RenderContext& context, glm::mat4 modelMatrix, glm::vec3 color, float roughness, float metallic, GLuint program);
-	void drawFireball(const glm::mat4& model, float radius, const glm::mat4& view, const glm::mat4& cameraMatrix);
 	void loadModelToContext(std::string path, Core::RenderContext& context);
 }

grk/project/src/ex_9_1.hpp

@@ -36,6 +36,8 @@ namespace texture {
 	GLuint cubemapTexture;
 }
 
+void createGalaxy(glm::vec3 galaxyPosition);
+
 GLuint depthMapFBO;
 GLuint depthMap;
 
@@ -58,7 +60,7 @@ float lastTime = -1.f;
 float deltaTime = 0.f;
 
 Spaceship* spaceship = Spaceship::getInstance();
-
+void createSolarSystem(glm::vec3 sunPos, float sunScale, float* planetSizes, int numberOfPlanets, float planetsDistance, float planetSpeedCoef);
 void updateDeltaTime(float time) {
 	if (lastTime < 0) {
 		lastTime = time;
@@ -130,35 +132,32 @@ void framebuffer_size_callback(GLFWwindow* window, int width, int height)
 
 
 void createSuns() {
-	GameUtils* gu = GameUtils::getInstance();
+	createGalaxy(glm::vec3(0.f));
-	sun = new Sun(programSun, models::sphereContext, glm::vec3(0, 2, 0), glm::vec3(-0.93633f, 0.351106, 0.003226f), glm::vec3(0.9f, 0.9f, 0.7f) * 5, 1);
+	createGalaxy(glm::vec3(0.f, 50.f, 200.f));
-	Planet* planet = new Planet(sun, 20.f, 0.25f, 1.f, models::sphereContext);
-	planets.push_back(planet);
-	Planet* moon = new Planet(planet, 5.f, 1.f, 0.2f, models::sphereContext);
-	planets.push_back(moon);
-	gu->getSuns()->push_back(sun);
-	Planet* planet2 = new Planet(sun, 50.f, 0.5f, 1.5f, models::sphereContext);
-	planets.push_back(planet2);
-	/*suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(-80, 20, 50), glm::vec3(-0.93633f, 0.351106, 0.003226f), glm::vec3(1.0f, 0.8f, 0.2f), 4.0));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(50, 40, -30), glm::vec3(-0.73633f, 0.451106, 0.023226f), glm::vec3(0.9f, 0.5f, 0.1f), 3.5));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(0, -60, 100), glm::vec3(-0.53633f, 0.551106, 0.043226f), glm::vec3(0.8f, 0.2f, 0.2f), 4.5));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(20, 80, -70), glm::vec3(0.33633f, 0.651106, 0.063226f), glm::vec3(0.5f, 0.7f, 0.9f), 3.8));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(-60, -20, 30), glm::vec3(-0.23633f, 0.751106, 0.083226f), glm::vec3(0.7f, 0.2f, 0.7f), 4.2));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(70, -50, -80), glm::vec3(-0.03633f, 0.851106, 0.103226f), glm::vec3(0.1f, 0.3f, 0.9f), 3.9));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(10, 30, 60), glm::vec3(0.13633f, -0.951106, -0.123226f), glm::vec3(0.6f, 0.9f, 0.4f), 4.3));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(-40, -80, -50), glm::vec3(0.33633f, -0.851106, -0.143226f), glm::vec3(0.7f, 0.5f, 0.2f), 3.7));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(90, 70, 20), glm::vec3(0.53633f, -0.751106, -0.163226f), glm::vec3(0.4f, 0.1f, 0.9f), 4.1));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(-30, 10, -40), glm::vec3(0.73633f, -0.651106, -0.183226f), glm::vec3(0.8f, 0.4f, 0.1f), 4.4));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(150, -100, 80), glm::vec3(0.33633f, -0.951106, -0.143226f), glm::vec3(0.2f, 0.8f, 0.5f), 3.9));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(-120, 50, -60), glm::vec3(0.73633f, 0.551106, 0.103226f), glm::vec3(0.9f, 0.2f, 0.7f), 3.6));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(0, 120, -150), glm::vec3(-0.23633f, -0.751106, 0.083226f), glm::vec3(0.5f, 0.6f, 0.9f), 3.4));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(-180, -50, 120), glm::vec3(0.13633f, 0.351106, -0.003226f), glm::vec3(0.7f, 0.9f, 0.2f), 4.2));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(60, -150, 180), glm::vec3(-0.93633f, -0.451106, -0.023226f), glm::vec3(0.3f, 0.7f, 0.8f), 3.8));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(100, 80, -120), glm::vec3(0.53633f, -0.651106, 0.163226f), glm::vec3(0.8f, 0.1f, 0.4f), 4.5));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(-50, -180, 150), glm::vec3(-0.33633f, 0.951106, -0.083226f), glm::vec3(0.4f, 0.8f, 0.6f), 3.5));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(200, 150, -100), glm::vec3(0.03633f, 0.151106, 0.103226f), glm::vec3(0.6f, 0.2f, 0.9f), 3.9));
-	suns.push_back(&Sun(programSun, models::sphereContext, glm::vec3(-150, -100, -50), glm::vec3(0.83633f, -0.251106, -0.123226f), glm::vec3(0.7f, 0.5f, 0.8f), 4.1));*/
 }
+
+void createGalaxy(glm::vec3 galaxyPosition) {
+	float planetsSizes[] = { 1.f, 1.5f, 0.8f, 1.2f, 0.2f };
+	createSolarSystem(galaxyPosition + glm::vec3(0, 2, 0), 3, planetsSizes, 5, 15.f, 0.2f);
+	float planetsSizes2[] = { 0.6f, 1.1f, 0.9f };
+	createSolarSystem(galaxyPosition + glm::vec3(150, 5, 0), 2, planetsSizes2, 3, 15.f, 0.2f);
+	float planetsSizes3[] = { 0.7f, 1.5f, 1.2f, 1.f };
+	createSolarSystem(galaxyPosition + glm::vec3(-20, -30, 50), 4, planetsSizes3, 4, 20.f, 0.2f);
+	float planetSizes4[] = { 1.f, 0.5f };
+	createSolarSystem(galaxyPosition + glm::vec3(100, 20, -50), 5, planetsSizes3, 2, 25.f, 0.2f);
+}
+
+void createSolarSystem(glm::vec3 sunPos, float sunScale, float* planetSizes, int numberOfPlanets, float planetsDistance, float planetSpeedCoef) {
+	GameUtils* gu = GameUtils::getInstance();
+	sun = new Sun(programSun, models::sphereContext, sunPos, glm::vec3(-0.93633f, 0.351106, 0.003226f), glm::vec3(0.9f, 0.9f, 0.7f) * 5, sunScale);
+	gu->getSuns()->push_back(sun);
+	for (int i = 0; i < numberOfPlanets; i++) {
+		float distanceFromSum = (i + 1) * planetsDistance;
+		Planet* planet = new Planet(sun, distanceFromSum, i * 0.1f + planetSpeedCoef, planetSizes[i], models::sphereContext);
+		planets.push_back(planet);
+	}
+}
+
 void init(GLFWwindow* window)
 {
 	GameUtils* gameUtils = GameUtils::getInstance();
@@ -183,6 +182,7 @@ void init(GLFWwindow* window)
 	"bkg2_top3.png",
 	"bkg2_bottom4.png",
 	"bkg2_front5.png",
+	"bkg2_back6.png"
 	};
 
 	texture::cubemapTexture = Core::LoadCubemap(cubeFaces);