multilights, two suns,

grk-project.vcxproj

@@ -17,6 +17,8 @@
     <None Include="shaders\shader_4_tex.vert" />
     <None Include="shaders\shader_color.frag" />
     <None Include="shaders\shader_color.vert" />
+    <None Include="shaders\shader_skybox.frag" />
+    <None Include="shaders\shader_skybox.vert" />
     <None Include="shaders\shader_tex.frag" />
     <None Include="shaders\shader_tex.vert" />
   </ItemGroup>
@@ -30,6 +32,7 @@
     <ClCompile Include="src\Texture.cpp" />
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="Skybox.h" />
     <ClInclude Include="src\Camera.h" />
     <ClInclude Include="src\mesh.h" />
     <ClInclude Include="src\model.h" />

grk-project.vcxproj.filters

@@ -42,6 +42,12 @@
     <None Include="shaders\shader_4_sun.vert">
       <Filter>Shader Files</Filter>
     </None>
+    <None Include="shaders\shader_skybox.frag">
+      <Filter>Shader Files</Filter>
+    </None>
+    <None Include="shaders\shader_skybox.vert">
+      <Filter>Shader Files</Filter>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="src\Box.cpp">
@@ -94,5 +100,8 @@
     <ClInclude Include="src\model.h">
       <Filter>Source Files</Filter>
     </ClInclude>
+    <ClInclude Include="Skybox.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

shaders/shader_4_sun.frag

@@ -5,7 +5,7 @@ uniform vec3 objectColor;
 uniform vec3 lightPos;
 uniform vec3 cameraPos;
 uniform sampler2D colorTexture;
-
+uniform vec3 colorTex;
 in vec3 interpNormal;
 in vec3 fragPos;
 in vec2 vTexCoord;
@@ -16,6 +16,6 @@ void main()
 	vec3 V = normalize(cameraPos-fragPos);
 	float coef = pow(max(0,dot(normal,V)),3);
 	vec4 textureColor = texture2D(colorTexture, -vTexCoord);
-	vec3 texture = vec3(textureColor.x, textureColor.y, textureColor.z);
+	vec3 texture = vec3(textureColor.x, textureColor.y, textureColor.z) * colorTex;
 	gl_FragColor = vec4(texture + texture * coef, 1.0);
 }

shaders/shader_4_tex.frag

@@ -1,26 +1,42 @@
 #version 430 core
 
+struct PointLight {
+	vec3 position;
+	vec3 color;
+};
+
+#define NR_POINT_LIGHTS 2
+
 uniform vec3 objectColor;
-//uniform vec3 lightDir;
 uniform vec3 lightPos;
 uniform vec3 cameraPos;
 uniform sampler2D colorTexture;
+uniform PointLight pointLights[NR_POINT_LIGHTS];
 
 in vec3 interpNormal;
 in vec3 fragPos;
 in vec2 vTexCoord;
 
+
+
 void main()
 {
-	vec3 lightDir = normalize(lightPos-fragPos);
+	vec3 fragColor = vec3(0,0,0);
-	vec3 V = normalize(cameraPos-fragPos);
+	vec4 textureColor = texture2D(colorTexture, -vTexCoord);
+	vec4 ambient = vec4(0.1, 0.1, 0.1, 1.0) * textureColor;
 	vec3 normal = normalize(interpNormal);
+	for(int i = 0; i < NR_POINT_LIGHTS; i++)
+	{
+		vec3 lightDir = normalize(pointLights[i].position - fragPos);
+	
+		vec3 V = normalize(cameraPos-fragPos);
 		vec3 R = reflect(-normalize(lightDir),normal);
 	
 		float specular = pow(max(0,dot(R,V)),10);
 		float diffuse = max(0,dot(normal,normalize(lightDir)));
-	vec4 textureColor = texture2D(colorTexture, -vTexCoord);
+		vec3 texture = vec3(textureColor.x, textureColor.y, textureColor.z) * pointLights[i].color;
-	vec3 texture = vec3(textureColor.x, textureColor.y, textureColor.z);
+		fragColor += mix(texture,texture*diffuse+vec3(1)*specular,0.9);
-	vec4 ambient = vec4(0.1, 0.1, 0.1, 1.0) * textureColor;
+	}
-	gl_FragColor = vec4(mix(texture,texture*diffuse+vec3(1)*specular,0.9), 1.0) + ambient;
+
+	gl_FragColor = vec4(fragColor, 1.0) + ambient;
 }

shaders/shader_skybox.frag

@@ -0,0 +1,11 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec3 TexCoords;
+
+uniform samplerCube skybox;
+
+void main()
+{    
+    FragColor = texture(skybox, TexCoords);
+}

shaders/shader_skybox.vert

@@ -0,0 +1,12 @@
+#version 330 core
+layout(location = 0) in vec3 vertexPosition;
+
+out vec3 TexCoords;
+
+uniform mat4 transformation;
+
+void main()
+{
+    TexCoords = vertexPosition;
+    gl_Position = transformation * vec4(vertexPosition, 1.0);
+}  

src/main.cpp

@@ -24,6 +24,7 @@
 GLuint program;
 GLuint programTex;
 GLuint programSun;
+GLuint programSkybox;
 Core::Shader_Loader shaderLoader;
 
 Core::RenderContext armContext;
@@ -33,8 +34,11 @@ int ballIndex;
 GLuint sunTexture;
 GLuint earthTexture;
 GLuint moonTexture;
+GLuint skyboxTexture;
 obj::Model sphereModel;
+obj::Model cubeModel;
 Core::RenderContext sphereContext;
+Core::RenderContext cubeContext;
 
 
 float cameraAngle = 0;
@@ -43,11 +47,23 @@ glm::vec3 cameraDir;
 
 glm::mat4 cameraMatrix, perspectiveMatrix;
 
+
 struct Light {
-	glm::vec3 pos;
+	glm::vec3 position;
 	glm::vec3 color;
 };
 
+std::vector<std::string> faces
+{
+	"skybox/right.jpg",
+	"skybox/left.jpg",
+	"skybox/top.jpg",
+	"skybox/bottom.jpg",
+	"skybox/front.jpg",
+	"skybox/back.jpg"
+};
+
+
 std::vector<Light> lights;
 
 void keyboard(unsigned char key, int x, int y)
@@ -76,6 +92,8 @@ glm::mat4 createCameraMatrix()
 	return Core::createViewMatrix(cameraPos, cameraDir, up);
 }
 
+
+
 void drawObject(GLuint program, Core::RenderContext context, glm::mat4 modelMatrix, glm::vec3 color)
 {
 	glUseProgram(program);
@@ -92,11 +110,61 @@ void drawObject(GLuint program, Core::RenderContext context, glm::mat4 modelMatr
 	glUseProgram(0);
 }
 
+//Skybox
+unsigned int loadCubemap(std::vector<std::string> faces)
+{
+	unsigned int textureID;
+	glGenTextures(1, &textureID);
+	glBindTexture(GL_TEXTURE_CUBE_MAP, textureID);
+
+	int width, height, nrChannels;
+	for (unsigned int i = 0; i < faces.size(); i++)
+	{
+		unsigned char *data = stbi_load(faces[i].c_str(), &width, &height, &nrChannels, 0);
+		if (data)
+		{
+			glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i,
+				0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
+			stbi_image_free(data);
+		}
+		else
+		{
+			std::cout << "Cubemap tex failed to load at path: " << faces[i] << std::endl;
+			stbi_image_free(data);
+		}
+	}
+
+	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+	glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
+
+	return textureID;
+}
+
+void drawSkybox(GLuint program, Core::RenderContext context, GLuint texID)
+{
+	glUseProgram(program);
+	glm::mat4 transformation = perspectiveMatrix * glm::mat4(glm::mat3(cameraMatrix));
+	glUniformMatrix4fv(glGetUniformLocation(program, "transformation"), 1, GL_FALSE, (float*)&transformation);
+	glDepthMask(GL_FALSE);
+	//Core::SetActiveTexture(texID, "skybox", program, 0);
+	glUniform1i(glGetUniformLocation(program, "skybox"), 0);
+	glActiveTexture(GL_TEXTURE0);
+	glBindTexture(GL_TEXTURE_CUBE_MAP, texID);
+	Core::DrawContext(context);
+	glDepthMask(GL_TRUE);
+	glUseProgram(0);
+}
+
+//Textures
 void drawObjectTexture(GLuint program, Core::RenderContext context, glm::mat4 modelMatrix, glm::vec3 texture, GLuint texID)
 {
 	glUseProgram(program);
 	glm::mat4 transformation = perspectiveMatrix * cameraMatrix * modelMatrix;
 	glUniformMatrix4fv(glGetUniformLocation(program, "modelMatrix"), 1, GL_FALSE, (float*)&modelMatrix);
+	glUniform3f(glGetUniformLocation(program, "colorTex"), texture.x, texture.y, texture.z);
 	glUniformMatrix4fv(glGetUniformLocation(program, "transformation"), 1, GL_FALSE, (float*)&transformation);
 
 	Core::SetActiveTexture(texID, "colorTexture", program, 0);
@@ -134,21 +202,36 @@ void renderScene()
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
 
+	drawSkybox(programSkybox, cubeContext, skyboxTexture);
 	
 	glUseProgram(programSun);
 	glUniform3f(glGetUniformLocation(programSun, "cameraPos"), cameraPos.x, cameraPos.y, cameraPos.z);
 
 	glm::vec3 sunPos = glm::vec3(0.0f, 0.0f, 0.0f);
-
+	glm::vec3 sunPos2 = glm::vec3(5.0f, -1.0f, 10.0f);
 
 	glm::mat4 sunModelMatrix = glm::mat4(1.0f);
 	sunModelMatrix = glm::translate(sunModelMatrix, sunPos);
 	sunModelMatrix = glm::rotate(sunModelMatrix, time/10.0f, glm::vec3(0.0f, 1.0f, 1.0f));
-	drawObjectTexture(programSun, sphereContext, sunModelMatrix, glm::vec3(0.8f, 0.5f, 0.1f), sunTexture);
+	drawObjectTexture(programSun, sphereContext, sunModelMatrix, glm::vec3(0.5f, 0.8f, 0.8f), sunTexture);
+
+	glm::mat4 sunModelMatrix2 = glm::mat4(1.0f);
+	sunModelMatrix2 = glm::translate(sunModelMatrix2, sunPos2);
+	sunModelMatrix2 = glm::rotate(sunModelMatrix2, time / 10.0f, glm::vec3(0.0f, 1.0f, 1.0f));
+	drawObjectTexture(programSun, sphereContext, sunModelMatrix2, glm::vec3(0.9f, 0.9f, 2.0f), sunTexture);
 
 	glUseProgram(programTex);
-	glm::vec3 lightPos = sunPos;
+
-	glUniform3f(glGetUniformLocation(programTex, "lightPos"), lightPos.x, lightPos.y, lightPos.z);
+	lights[0].position = sunPos;
+	lights[1].position = sunPos2;
+	for (int i = 0; i < lights.size(); i++)
+	{
+		std::string col = "pointLights[" + std::to_string(i) + "].color";
+		std::string pos = "pointLights[" + std::to_string(i) + "].position";
+		glUniform3f(glGetUniformLocation(programTex, col.c_str()), lights[i].color.x, lights[i].color.y, lights[i].color.z);
+		glUniform3f(glGetUniformLocation(programTex, pos.c_str()), lights[i].position.x, lights[i].position.y, lights[i].position.z);
+	}
+
 	glUniform3f(glGetUniformLocation(programTex, "cameraPos"), cameraPos.x, cameraPos.y, cameraPos.z);
 	glm::mat4 earth = drawPlanet(time / 5.0f, glm::vec3(0.0f, 1.0f, 0.0f), glm::vec3(-3.5f, 0.0f, -3.5f), glm::vec3(0.5f, 0.5f, 0.5f));
 	glm::mat4 moon = drawMoon(earth, time/2.0f, glm::vec3(1.0f, 0.0f, 0.0f), glm::vec3(0, 1, 1), glm::vec3(1.0f, 1.0f, 1.0f), glm::vec3(0.2f, 0.2f, 0.2f));
@@ -167,12 +250,27 @@ void init()
 	program = shaderLoader.CreateProgram("shaders/shader_4_1.vert", "shaders/shader_4_1.frag");
 	programTex = shaderLoader.CreateProgram("shaders/shader_4_tex.vert", "shaders/shader_4_tex.frag");
 	programSun = shaderLoader.CreateProgram("shaders/shader_4_sun.vert", "shaders/shader_4_sun.frag");
+	programSkybox = shaderLoader.CreateProgram("shaders/shader_skybox.vert", "shaders/shader_skybox.frag");
 
 	sphereModel = obj::loadModelFromFile("models/sphere.obj");
+	cubeModel = obj::loadModelFromFile("models/cube.obj");
 	sphereContext.initFromOBJ(sphereModel);
+	cubeContext.initFromOBJ(cubeModel);
 	sunTexture = Core::LoadTexture("textures/sun.png");
 	earthTexture = Core::LoadTexture("textures/earth2.png");
 	moonTexture = Core::LoadTexture("textures/moon.png");
+	skyboxTexture = loadCubemap(faces);
+	
+	Light l1;
+	l1.position = glm::vec3(0.0f, 0.0f, 0.0f);
+	l1.color = glm::vec3(0.8f, 0.8f, 0.7f);
+	lights.push_back(l1);
+
+	Light l2;
+	l2.position = glm::vec3(5.0f, -1.0f, 10.0f);
+	l2.color = glm::vec3(0.5f, 0.5f, 0.5f);
+	lights.push_back(l2);
+
 }
 
 void shutdown()