grafika_projekt/shaders/bubble.frag

@@ -0,0 +1,16 @@
+#version 410 core
+out vec4 FragColor;
+
+in vec3 Normal;
+in vec3 Position;
+
+uniform vec3 cameraPos;
+uniform samplerCube skybox;
+
+void main()
+{             
+    float ratio = 1.00 / 1.52;
+    vec3 I = normalize(Position - cameraPos);
+    vec3 R = refract(I, normalize(Normal), ratio);
+    FragColor = vec4(texture(skybox, R).rgb, 1.0);
+}

grafika_projekt/shaders/bubble.vert

@@ -0,0 +1,17 @@
+#version 410 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+
+out vec3 Normal;
+out vec3 Position;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    Normal = mat3(transpose(inverse(model))) * aNormal;
+    Position = vec3(model * vec4(aPos, 1.0));
+    gl_Position = projection * view * vec4(Position, 1.0);
+}  

grafika_projekt/src/main.cpp

@@ -14,10 +14,13 @@
 #include "SOIL/stb_image_aug.h"
 
 GLuint skyboxProgram, skyboxBuffer;
+GLuint cubeProgram, cubeBuffer;
 GLuint programColor;
 GLuint programTexture;
 GLuint textureSubmarine;
+GLuint textureBubble;
 unsigned int cubemapTexture, skyboxVAO;
+unsigned int cubeVAO, cubeVBO;
 
 float old_x, old_y = -1;
 glm::vec3 cursorDiff;
@@ -33,6 +36,7 @@ glm::mat4 cameraMatrix, perspectiveMatrix;
 
 Core::Shader_Loader shaderLoader;
 Core::RenderContext submarineContext;
+Core::RenderContext bubbleContext;
 
 std::string skyboxTextures[6] = {
 	"models/skybox/right.jpg",
@@ -46,6 +50,51 @@ std::string skyboxTextures[6] = {
 float skyboxVerticeParameter = 20.0f;
 float skyboxBoundary = 19.5f;
 
+float cubeVertices[] = {
+	// positions          // normals
+	-0.5f, -0.5f, -0.5f,  0.0f,  0.0f, -1.0f,
+	 0.5f, -0.5f, -0.5f,  0.0f,  0.0f, -1.0f,
+	 0.5f,  0.5f, -0.5f,  0.0f,  0.0f, -1.0f,
+	 0.5f,  0.5f, -0.5f,  0.0f,  0.0f, -1.0f,
+	-0.5f,  0.5f, -0.5f,  0.0f,  0.0f, -1.0f,
+	-0.5f, -0.5f, -0.5f,  0.0f,  0.0f, -1.0f,
+
+	-0.5f, -0.5f,  0.5f,  0.0f,  0.0f, 1.0f,
+	 0.5f, -0.5f,  0.5f,  0.0f,  0.0f, 1.0f,
+	 0.5f,  0.5f,  0.5f,  0.0f,  0.0f, 1.0f,
+	 0.5f,  0.5f,  0.5f,  0.0f,  0.0f, 1.0f,
+	-0.5f,  0.5f,  0.5f,  0.0f,  0.0f, 1.0f,
+	-0.5f, -0.5f,  0.5f,  0.0f,  0.0f, 1.0f,
+
+	-0.5f,  0.5f,  0.5f, -1.0f,  0.0f,  0.0f,
+	-0.5f,  0.5f, -0.5f, -1.0f,  0.0f,  0.0f,
+	-0.5f, -0.5f, -0.5f, -1.0f,  0.0f,  0.0f,
+	-0.5f, -0.5f, -0.5f, -1.0f,  0.0f,  0.0f,
+	-0.5f, -0.5f,  0.5f, -1.0f,  0.0f,  0.0f,
+	-0.5f,  0.5f,  0.5f, -1.0f,  0.0f,  0.0f,
+
+	 0.5f,  0.5f,  0.5f,  1.0f,  0.0f,  0.0f,
+	 0.5f,  0.5f, -0.5f,  1.0f,  0.0f,  0.0f,
+	 0.5f, -0.5f, -0.5f,  1.0f,  0.0f,  0.0f,
+	 0.5f, -0.5f, -0.5f,  1.0f,  0.0f,  0.0f,
+	 0.5f, -0.5f,  0.5f,  1.0f,  0.0f,  0.0f,
+	 0.5f,  0.5f,  0.5f,  1.0f,  0.0f,  0.0f,
+
+	-0.5f, -0.5f, -0.5f,  0.0f, -1.0f,  0.0f,
+	 0.5f, -0.5f, -0.5f,  0.0f, -1.0f,  0.0f,
+	 0.5f, -0.5f,  0.5f,  0.0f, -1.0f,  0.0f,
+	 0.5f, -0.5f,  0.5f,  0.0f, -1.0f,  0.0f,
+	-0.5f, -0.5f,  0.5f,  0.0f, -1.0f,  0.0f,
+	-0.5f, -0.5f, -0.5f,  0.0f, -1.0f,  0.0f,
+
+	-0.5f,  0.5f, -0.5f,  0.0f,  1.0f,  0.0f,
+	 0.5f,  0.5f, -0.5f,  0.0f,  1.0f,  0.0f,
+	 0.5f,  0.5f,  0.5f,  0.0f,  1.0f,  0.0f,
+	 0.5f,  0.5f,  0.5f,  0.0f,  1.0f,  0.0f,
+	-0.5f,  0.5f,  0.5f,  0.0f,  1.0f,  0.0f,
+	-0.5f,  0.5f, -0.5f,  0.0f,  1.0f,  0.0f
+};
+
 float skyboxVertices[] = {
 	-skyboxVerticeParameter,  skyboxVerticeParameter, -skyboxVerticeParameter,
 	-skyboxVerticeParameter, -skyboxVerticeParameter, -skyboxVerticeParameter,
@@ -212,12 +261,22 @@ void renderScene()
 	glActiveTexture(GL_TEXTURE0);
 	glBindTexture(GL_TEXTURE_CUBE_MAP, cubemapTexture);
 	glDrawArrays(GL_TRIANGLES, 0, 36);
+	glUseProgram(skyboxProgram);
+	glBindVertexArray(0);
+	glBindVertexArray(cubeVAO);
+	glActiveTexture(GL_TEXTURE0);
+	glBindTexture(GL_TEXTURE_CUBE_MAP, cubemapTexture);
+	glDrawArrays(GL_TRIANGLES, 0, 36);
 	glBindVertexArray(0);
 
 	glm::mat4 submarineInitialTransformation = glm::translate(glm::vec3(-1, 0, -0.5)) * glm::rotate(glm::radians(180.0f), glm::vec3(0, 1, 0)) * glm::scale(glm::vec3(0.25f));
 	glm::mat4 submarineModelMatrix = glm::translate(cameraPos + cameraDir) * glm::mat4_cast(glm::inverse(rotation)) * submarineInitialTransformation;
 	//drawObjectColor(fishContext, fishModelMatrix, glm::vec3(0.6f));
 	drawObjectTexture(submarineContext, submarineModelMatrix, textureSubmarine);
+
+	glm::mat4 bubbleInitialTransformation = glm::translate(glm::vec3(1, 0, -0.5)) * glm::rotate(glm::radians(180.0f), glm::vec3(0, 1, 0)) * glm::scale(glm::vec3(0.005f));
+	drawObjectTexture(bubbleContext, bubbleInitialTransformation, textureBubble);
+	
 	glutSwapBuffers();
 }
 
@@ -284,16 +343,34 @@ void initSkybox()
 	glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
 }
 
+void initCube()
+{
+	glGenVertexArrays(1, &cubeVAO);
+	glGenBuffers(1, &cubeVBO);
+	glBindVertexArray(cubeVAO);
+	glBindBuffer(GL_ARRAY_BUFFER, cubeVBO);
+	glBufferData(GL_ARRAY_BUFFER, sizeof(cubeVertices), &cubeVertices, GL_STATIC_DRAW);
+	glEnableVertexAttribArray(0);
+	glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)0);
+	glEnableVertexAttribArray(1);
+	glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)(3 * sizeof(float)));
+}
+
 void init()
 {
 	glEnable(GL_DEPTH_TEST);
 	programColor = shaderLoader.CreateProgram((char*) "shaders/shader_color.vert", (char*) "shaders/shader_color.frag");
 	programTexture = shaderLoader.CreateProgram((char*) "shaders/shader_tex.vert", (char*) "shaders/shader_tex.frag");
 	skyboxProgram = shaderLoader.CreateProgram((char *) "shaders/skybox.vert", (char *) "shaders/skybox.frag");
+	cubeProgram = shaderLoader.CreateProgram((char*)"shaders/bubble.vert", (char*)"shaders/bubble.frag");
 	cubemapTexture = loadCubemap();
 	loadModelToContext("models/submarine.obj", submarineContext);
 	textureSubmarine = Core::LoadTexture("textures/submarine.png");
+	loadModelToContext("models/sphere.obj", bubbleContext);
+	textureBubble = Core::LoadTexture("textures/fish.png");
+	initCube();
 	initSkybox();
+
 }
 
 void shutdown()
@@ -309,6 +386,7 @@ void idle()
 }
 
 
+
 int main(int argc, char** argv)
 {
 	glutInit(&argc, argv);