połączenie pbr z tonemappingiem i dodanie możliwości zmiany chropowatości i metaliczności

grk/cw 6/shaders/shader_pbr.frag

@@ -1,14 +1,12 @@
 #version 430 core
 
-//float AMBIENT = 0.03f;
-float AMBIENT = 0.1f;
+float AMBIENT = 0.25f;
 float PI = 3.14159f;
 
 uniform sampler2D depthMap;
 
 uniform vec3 cameraPos;
 
-//uniform vec3 color;
 uniform sampler2D colorTexture;
 
 uniform vec3 sunDir;
@@ -17,11 +15,6 @@ uniform vec3 sunColor;
 uniform vec3 lightPos;
 uniform vec3 lightColor;
 
-//uniform vec3 spotlightPos;
-//uniform vec3 spotlightColor;
-//uniform vec3 spotlightConeDir;
-//uniform vec3 spotlightPhi;
-
 uniform float metallic;
 uniform float roughness;
 
@@ -35,11 +28,8 @@ out vec4 outColor;
 
 in vec3 viewDirTS;
 in vec3 lightDirTS;
-//in vec3 spotlightDirTS;
 in vec3 sunDirTS;
 
-//in vec3 test;
-
 float DistributionGGX(vec3 normal, vec3 H, float roughness)
 {
     float a = roughness * roughness;
@@ -59,7 +49,7 @@ float GeometrySchlickGGX(float NdotV, float roughness)
     float r = (roughness + 1.0);
     float k = (r * r) / 8.0;
 
-    float num   = NdotV;
+    float num = NdotV;
     float denom = NdotV * (1.0 - k) + k;
 	
     return num / denom;
@@ -69,8 +59,8 @@ float GeometrySmith(vec3 normal, vec3 V, vec3 lightDir, float roughness)
 {
     float NdotV = max(dot(normal, V), 0.0);
     float NdotL = max(dot(normal, lightDir), 0.0);
-    float ggx2  = GeometrySchlickGGX(NdotV, roughness);
-    float ggx1  = GeometrySchlickGGX(NdotL, roughness);
+    float ggx2 = GeometrySchlickGGX(NdotV, roughness);
+    float ggx1 = GeometrySchlickGGX(NdotL, roughness);
 	
     return ggx1 * ggx2;
 }
@@ -84,7 +74,6 @@ vec3 PBRLight(vec3 lightDir, vec3 radiance, vec3 normal, vec3 V, vec3 color)
 {
 	float diffuse = max(0, dot(normal, lightDir));
 
-	//vec3 V = normalize(cameraPos - worldPos);
 	vec3 F0 = vec3(0.04); 
     F0 = mix(F0, color, metallic);
 
@@ -92,53 +81,52 @@ vec3 PBRLight(vec3 lightDir, vec3 radiance, vec3 normal, vec3 V, vec3 color)
         
     // 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);       
+    float G = GeometrySmith(normal, V, lightDir, roughness);      
+    vec3 F = fresnelSchlick(max(dot(H, V), 0.0), F0);       
         
     vec3 kS = F;
     vec3 kD = vec3(1.0) - kS;
     kD *= 1.0 - metallic;	  
         
-    vec3 numerator    = NDF * G * F;
+    vec3 numerator = NDF * G * F;
     float denominator = 4.0 * max(dot(normal, V), 0.0) * max(dot(normal, lightDir), 0.0) + 0.0001;
-    vec3 specular     = numerator / denominator;  
+    vec3 specular = numerator / denominator;  
             
     // add to outgoing radiance Lo
     float NdotL = max(dot(normal, lightDir), 0.0);   
 	return (kD * color / PI + specular) * radiance * NdotL;
 }
 
+vec3 toneMapping(vec3 color)
+{
+	float exposure = 0.03;
+	vec3 mapped = 1 - exp(-color * exposure);
+	return mapped;
+}
+
 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 lightDir = normalize(lightPos - worldPos);
 
     vec4 textureColor = texture2D(colorTexture, vtc);
 
-	vec3 ambient = AMBIENT * vec3(textureColor);
+    float diffuse = max(0, dot(normal, lightDir));
+    vec3 distance = lightColor / pow(length(lightPos - worldPos), 2.0) * 300;
+    vec3 toneMappedColor = toneMapping(vec3(textureColor) * min(1, AMBIENT + diffuse) * distance);
+    //gamma correction
+    //toneMappedColor = pow(toneMappedColor, vec3(1.0/2.2)); 
+
+	vec3 ambient = AMBIENT * toneMappedColor;
 	vec3 attenuatedLightColor = lightColor / pow(length(lightPos - worldPos), 2);
 	vec3 illumination;
-	illumination = ambient + PBRLight(lightDir, attenuatedLightColor, normal, viewDir, vec3(textureColor));
-	
-	//flashlight
-	//vec3 spotlightDir = normalize(spotlightDirTS);
-	//vec3 spotlightDir = normalize(spotlightPos  -worldPos);
-	
-
-    //float angleAttenuation = clamp((dot(-normalize(spotlightPos - worldPos), spotlightConeDir) - 0.5) * 3, 0, 1);
-	//attenuatedLightColor = angleAttenuation * spotlightColor / pow(length(spotlightPos - worldPos), 2);
-	//illumination = illumination + PBRLight(spotlightDir, attenuatedLightColor, normal, viewDir, vec3(textureColor));
+	illumination = ambient + PBRLight(lightDir, attenuatedLightColor, normal, viewDir, toneMappedColor);
 
 	//sun
-	illumination = illumination + PBRLight(sunDir, sunColor, normal, viewDir, vec3(textureColor));
+	illumination = illumination + PBRLight(sunDir, sunColor, normal, viewDir, toneMappedColor);
 
-	outColor = vec4(vec3(1.0) - exp(-illumination * exposition * 0.01f), 1);
-	//outColor = vec4(roughness, metallic, 0, 1);
-    //outColor = vec4(test);
+	outColor = vec4(vec3(1.0) - exp(-illumination * exposition), 1);
 }

grk/cw 6/shaders/shader_pbr.vert

@@ -14,13 +14,11 @@ out vec3 worldPos;
 out vec2 vtc;
 
 uniform vec3 lightPos;
-//uniform vec3 spotlightPos;
 uniform vec3 cameraPos;
 uniform vec3 sunDir;
 
 out vec3 viewDirTS;
 out vec3 lightDirTS;
-//out vec3 spotlightDirTS;
 out vec3 sunDirTS;
 
 void main()
@@ -39,7 +37,5 @@ void main()
 	viewDirTS = TBN * V;
 	vec3 L = normalize(lightPos - worldPos);
 	lightDirTS = TBN * L;
-	//vec3 SL = normalize(spotlightPos - worldPos);
-	//spotlightDirTS = TBN * SL;
 	sunDirTS = TBN * sunDir;
 }

grk/cw 6/shaders/shader_skybox.frag

@@ -10,5 +10,5 @@ out vec4 out_color;
 void main()
 {
     vec4 textureColor = texture(skybox, texCoord);
-    out_color = vec4(vec3(textureColor) * lightColor * 0.03f, 1.0f);
+    out_color = vec4(vec3(textureColor) * lightColor * 0.3f, 1.0f);
 }

grk/cw 6/shaders/shader_sun.frag

@@ -16,5 +16,5 @@ uniform sampler2D colorTexture;
 void main()
 {
 	vec4 textureColor = texture2D(colorTexture, vtc);
-	outColor = vec4(vec3(textureColor) * lightColor * 0.015f, 1.0);
+	outColor = vec4(vec3(textureColor) * lightColor * 0.15f, 1.0);
 }

grk/cw 6/shaders/shader_tex.frag

@@ -15,9 +15,10 @@ out vec4 outColor;
 vec3 outputColor;
 uniform sampler2D colorTexture;
 
-vec3 toneMapping(vec3 color) {
+vec3 toneMapping(vec3 color)
+{
 	float exposure = 0.06;
-	vec3 mapped = 1 - exp(-color*exposure);
+	vec3 mapped = 1 - exp(-color * exposure);
 	return mapped;
 }
 
@@ -27,6 +28,7 @@ void main()
 	vec3 normal = normalize(vecNormal);
 	float diffuse = max(0, dot(normal, lightDir));
 	textureColor = texture2D(colorTexture, vtc);
+
 	vec3 distance = lightColor / pow(length(lightPos - worldPos), 2.0) * 200;
 	outputColor = vec3(textureColor) * min(1, AMBIENT + diffuse) * distance;
 

grk/cw 6/src/Planet.hpp

@@ -79,8 +79,8 @@ GLuint planetTex;
 glm::vec3 planetPos = glm::vec3(0.f, 0.f, 0.f);
 float planetSize = 0.005f;
 float planetRot = 0.f;
-float planetRough = 0.4f;
-float planetMetal = 0.4f;
+float planetRough = 0.5f;
+float planetMetal = 0.5f;
 
 const char* const sunTexPaths[] = { "./textures/suns/sol.jpg", "./textures/suns/orange.jpg", "./textures/suns/lava.png", "./textures/suns/star.png", "./textures/suns/sun.jpg" };
 int sunTexIndex = 20;
@@ -112,7 +112,7 @@ unsigned int depthMapFBO;
 int HDR_WIDTH = 1024;
 int HDR_HEIGHT = 1024;
 
-float lightPower = 100.f;
+float lightPower = 10.f;
 glm::vec3 lightColor = glm::vec3(lightPower, lightPower, lightPower);
 
 glm::mat4 createCameraMatrix() {
@@ -193,7 +193,6 @@ void initDepthMap() {
 	glBindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
-
 void drawPlanet(Core::RenderContext& context, glm::mat4 modelMatrix, GLuint texture) {
 	glUseProgram(programTex);
 	Core::SetActiveTexture(texture, "colorTexture", programTex, 0);
@@ -245,8 +244,6 @@ void drawObjectPBR(Core::RenderContext& context, glm::mat4 modelMatrix, GLuint t
 	glUniform1f(glGetUniformLocation(programPbr, "roughness"), roughness);
 	glUniform1f(glGetUniformLocation(programPbr, "metallic"), metallic);
 
-	//glUniform3f(glGetUniformLocation(programPbr, "color"), color.x, color.y, color.z);
-
 	glUniform3f(glGetUniformLocation(programPbr, "cameraPos"), cameraPos.x, cameraPos.y, cameraPos.z);
 
 	glUniform3f(glGetUniformLocation(programPbr, "sunDir"), sunDir.x, sunDir.y, sunDir.z);
@@ -255,10 +252,6 @@ void drawObjectPBR(Core::RenderContext& context, glm::mat4 modelMatrix, GLuint t
 	glUniform3f(glGetUniformLocation(programPbr, "lightPos"), sunPos.x, sunPos.y, sunPos.z);
 	glUniform3f(glGetUniformLocation(programPbr, "lightColor"), lightColor.x, lightColor.y, lightColor.z);
 
-	//glUniform3f(glGetUniformLocation(programPbr, "spotlightConeDir"), spotlightConeDir.x, spotlightConeDir.y, spotlightConeDir.z);
-	//glUniform3f(glGetUniformLocation(programPbr, "spotlightPos"), spotlightPos.x, spotlightPos.y, spotlightPos.z);
-	//glUniform3f(glGetUniformLocation(programPbr, "spotlightColor"), spotlightColor.x, spotlightColor.y, spotlightColor.z);
-	//glUniform1f(glGetUniformLocation(programPbr, "spotlightPhi"), spotlightPhi);
 	Core::DrawContext(context);
 	glUseProgram(0);
 }
@@ -399,15 +392,31 @@ void processInput(GLFWwindow* window)
 		Sleep(200);
 	}
 
-	//siła światła
-	float powerSpeed = 1.f;
+	//jasność
+	float powerSpeed = 0.05f;
 
-	if (glfwGetKey(window, GLFW_KEY_O) == GLFW_PRESS && lightPower < 300.f)
+	if (glfwGetKey(window, GLFW_KEY_1) == GLFW_PRESS && lightPower < 25.f)
 		lightPower += powerSpeed;
-	if (glfwGetKey(window, GLFW_KEY_P) == GLFW_PRESS && lightPower > 10.f)
+	if (glfwGetKey(window, GLFW_KEY_2) == GLFW_PRESS && lightPower > 2.5f)
 		lightPower -= powerSpeed;
 
 	lightColor = glm::vec3(lightPower, lightPower, lightPower);
+
+	//chropowatość
+	float roughSpeed = 0.002f;
+
+	if (glfwGetKey(window, GLFW_KEY_3) == GLFW_PRESS && planetRough < 1.f)
+		planetRough += roughSpeed;
+	if (glfwGetKey(window, GLFW_KEY_4) == GLFW_PRESS && planetRough > 0.f)
+		planetRough -= roughSpeed;
+
+	//metaliczność
+	float metalSpeed = 0.002f;
+
+	if (glfwGetKey(window, GLFW_KEY_5) == GLFW_PRESS && planetMetal < 1.f)
+		planetMetal += metalSpeed;
+	if (glfwGetKey(window, GLFW_KEY_6) == GLFW_PRESS && planetMetal > 0.f)
+		planetMetal -= metalSpeed;
 }
 
 // funkcja jest glowna petla

konspekt

@@ -28,6 +28,6 @@ UP/DOWN - wielkość planety
 LEFT/RIGHT - obrót planety
 T/Y - tekstura planety
 U/I - tekstura słońca
-O/P - siła światła
-
- 
+1/2 - jasność
+3/4 - chropowatość
+5/6 - metaliczność

to-do.txt

@@ -1,15 +1,8 @@
-na 22.01.2024
+na 29.01.2024
 
 https://andkok.faculty.wmi.amu.edu.pl/grk/
 
-Oliwia:
-- znaleźć tekstury (done)
-- perlin noise - poczytać i spróbować coś zrobić
-
-Kacper:
-- skybox
-- przyciski funkcyjne (done)
-
-Natalia:
-- Bloom
-- jak zostanie skończone, to perlin noise
+Do zrobienia:
+- pbr (done)
+- bloom
+- perlin noise