Here is a more simple source code with reproduce the problem :
#include "application.h"
#include <SFML/OpenGL.hpp>
#include <SFML/Window/WindowStyle.hpp>
#include <stdio.h>
#include <string>
#include <fstream>
#include <sstream>
#include <iostream>
#include <stddef.h>
#include <vector>
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>
using namespace odfaeg::core;
using namespace odfaeg::math;
using namespace odfaeg::physic;
using namespace odfaeg::graphic;
using namespace odfaeg::window;
using namespace odfaeg::audio;
using namespace sorrok;
using namespace std;
// Defines several possible options for camera movement. Used as abstraction to stay away from window-system specific input methods
enum Camera_Movement {
FORWARD,
BACKWARD,
LEFT,
RIGHT,
UP,
DOWN
};
// Default camera values
const float YAW = -90.0f;
const float PITCH = 0.0f;
const float SPEED = 2.5f;
const float SENSITIVITY = 0.1f;
const float ZOOM = 45.0f;
// An abstract camera class that processes input and calculates the corresponding Euler Angles, Vectors and Matrices for use in OpenGL
class Camera
{
public:
// camera Attributes
glm::vec3 Position;
glm::vec3 Front;
glm::vec3 Up;
glm::vec3 Right;
glm::vec3 WorldUp;
// euler Angles
float Yaw;
float Pitch;
// camera options
float MovementSpeed;
float MouseSensitivity;
float Zoom;
// constructor with vectors
Camera(glm::vec3 position = glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3 up = glm::vec3(0.0f, 1.0f, 0.0f), float yaw = YAW, float pitch = PITCH) : Front(glm::vec3(0.0f, 0.0f, -1.0f)), MovementSpeed(SPEED), MouseSensitivity(SENSITIVITY), Zoom(ZOOM)
{
Position = position;
WorldUp = up;
Yaw = yaw;
Pitch = pitch;
updateCameraVectors();
}
// constructor with scalar values
Camera(float posX, float posY, float posZ, float upX, float upY, float upZ, float yaw, float pitch) : Front(glm::vec3(0.0f, 0.0f, -1.0f)), MovementSpeed(SPEED), MouseSensitivity(SENSITIVITY), Zoom(ZOOM)
{
Position = glm::vec3(posX, posY, posZ);
WorldUp = glm::vec3(upX, upY, upZ);
Yaw = yaw;
Pitch = pitch;
updateCameraVectors();
}
// returns the view matrix calculated using Euler Angles and the LookAt Matrix
glm::mat4 GetViewMatrix()
{
return glm::lookAt(Position, Position + Front, Up);
}
glm::mat4 lookAt (Camera_Movement direction) {
if (direction == FORWARD) {
return glm::lookAt(Position, Position + Front, Up);
}
if (direction == BACKWARD) {
return glm::lookAt(Position, Position - Front, Up);
}
if (direction == LEFT) {
return glm::lookAt(Position, Position - Right, Up);
}
if (direction == RIGHT) {
return glm::lookAt(Position, Position + Right, Up);
}
if (direction == UP) {
return glm::lookAt(Position, Position + Up, Up);
}
if (direction == DOWN) {
return glm::lookAt(Position, Position - Up, Up);
}
}
// processes input received from any keyboard-like input system. Accepts input parameter in the form of camera defined ENUM (to abstract it from windowing systems)
void ProcessKeyboard(Camera_Movement direction, float deltaTime)
{
float velocity = MovementSpeed * deltaTime;
if (direction == FORWARD)
Position += Front * velocity;
if (direction == BACKWARD)
Position -= Front * velocity;
if (direction == LEFT)
Position -= Right * velocity;
if (direction == RIGHT)
Position += Right * velocity;
}
// processes input received from a mouse input system. Expects the offset value in both the x and y direction.
void ProcessMouseMovement(float xoffset, float yoffset, GLboolean constrainPitch = true)
{
xoffset *= MouseSensitivity;
yoffset *= MouseSensitivity;
Yaw += xoffset;
Pitch += yoffset;
// make sure that when pitch is out of bounds, screen doesn't get flipped
if (constrainPitch)
{
if (Pitch > 89.0f)
Pitch = 89.0f;
if (Pitch < -89.0f)
Pitch = -89.0f;
}
// update Front, Right and Up Vectors using the updated Euler angles
updateCameraVectors();
}
// processes input received from a mouse scroll-wheel event. Only requires input on the vertical wheel-axis
void ProcessMouseScroll(float yoffset)
{
Zoom -= (float)yoffset;
if (Zoom < 1.0f)
Zoom = 1.0f;
if (Zoom > 45.0f)
Zoom = 45.0f;
}
private:
// calculates the front vector from the Camera's (updated) Euler Angles
void updateCameraVectors()
{
// calculate the new Front vector
glm::vec3 front;
front.x = cos(glm::radians(Yaw)) * cos(glm::radians(Pitch));
front.y = sin(glm::radians(Pitch));
front.z = sin(glm::radians(Yaw)) * cos(glm::radians(Pitch));
Front = glm::normalize(front);
// also re-calculate the Right and Up vector
Right = glm::normalize(glm::cross(Front, WorldUp)); // normalize the vectors, because their length gets closer to 0 the more you look up or down which results in slower movement.
Up = glm::normalize(glm::cross(Right, Front));
}
};
unsigned int loadCubemap(vector<std::string> faces);
Matrix4f glmToODFAEGMatrix(glm::mat4 mat);
// settings
const unsigned int SCR_WIDTH = 800;
const unsigned int SCR_HEIGHT = 600;
// camera
Camera camera(glm::vec3(0.0f, 0.0f, 3.0f));
Camera camera2;
float lastX = (float)SCR_WIDTH / 2.0;
float lastY = (float)SCR_HEIGHT / 2.0;
bool firstMouse = true;
// timing
float deltaTime = 0.0f;
float lastFrame = 0.0f;
float speed = 10.f;
float sensivity = 0.1f;
float oldX = (float)SCR_WIDTH / 2.0;
float oldY = (float)SCR_HEIGHT / 2.0;
int main(int argc, char* argv[])
{
/*EXPORT_CLASS_GUID(BoundingVolumeBoundingBox, BoundingVolume, BoundingBox)
EXPORT_CLASS_GUID(EntityTile, Entity, Tile)
EXPORT_CLASS_GUID(EntityTile, Entity, BigTile)
EXPORT_CLASS_GUID(EntityWall, Entity, g2d::Wall)
EXPORT_CLASS_GUID(EntityDecor, Entity, g2d::Decor)
EXPORT_CLASS_GUID(EntityAnimation, Entity, Anim)
EXPORT_CLASS_GUID(EntityHero, Entity, Hero)
EXPORT_CLASS_GUID(EntityMesh, Entity, Mesh)
MyAppli app(sf::VideoMode(800, 600), "Test odfaeg");
return app.exec();*/
// create the window
sf::Window window(sf::VideoMode(800, 600), "OpenGL", sf::Style::Default, sf::ContextSettings(24, 0, 4, 4, 6));
glewInit();
window.setVerticalSyncEnabled(true);
// activate the window
window.setActive(true);
// load resources, initialize the OpenGL states, ...
glEnable(GL_DEPTH_TEST);
// build and compile shaders
// -------------------------
const std::string refractCubeVS = R"(#version 460
layout (location = 0) in vec3 aPos;
layout (location = 1) in vec2 aTexCoords;
uniform mat4 model;
uniform mat4 view;
uniform mat4 projection;
out vec2 texCoords;
void main() {
gl_Position = projection * view * model * vec4(aPos, 1.0);
texCoords = aTexCoords;
}
)";
const std::string refractCubeFS = R"(#version 460
uniform sampler2D texture;
in vec2 texCoords;
out vec4 FragColor;
void main() {
FragColor = texture2D (texture, texCoords);
})";
const std::string cubeMapsVS = R"(#version 460
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 * model * vec4(aPos, 1.0);
}
)";
const std::string cubeMapsFS = R"(#version 460
out vec4 FragColor;
in vec3 Normal;
in vec3 Position;
uniform vec3 cameraPos;
uniform samplerCube skybox;
void main()
{
vec3 I = normalize(Position - cameraPos);
vec3 R = reflect(I, normalize(Normal));
R = normalize(R);
FragColor = vec4(abs(R.r), abs(R.g), abs(R.b), 1); /*vec4(texture(skybox, R).rgb, 1.0);*/
}
)";
const std::string skyboxVS = R"(#version 460
layout (location = 0) in vec3 aPos;
out vec3 TexCoords;
uniform mat4 projection;
uniform mat4 view;
void main()
{
TexCoords = aPos;
vec4 pos = projection * view * vec4(aPos, 1.0);
gl_Position = pos.xyww;
}
)";
const std::string skyboxFS = R"(#version 460
out vec4 FragColor;
in vec3 TexCoords;
uniform samplerCube skybox;
void main()
{
FragColor = texture(skybox, TexCoords);
}
)";
odfaeg::graphic::Shader shader, skyboxShader, refractCubeShader;
shader.loadFromMemory(cubeMapsVS, cubeMapsFS);
skyboxShader.loadFromMemory(skyboxVS, skyboxFS);
refractCubeShader.loadFromMemory(refractCubeVS, refractCubeFS);
// set up vertex data (and buffer(s)) and configure vertex attributes
// ------------------------------------------------------------------
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
};
// set up vertex data (and buffer(s)) and configure vertex attributes
// ------------------------------------------------------------------
float skyboxVertices[] = {
// positions
-1.0f, 1.0f, -1.0f,
-1.0f, -1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
-1.0f, -1.0f, -1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f, -1.0f, 1.0f,
1.0f, -1.0f, -1.0f,
1.0f, -1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
-1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, -1.0f, 1.0f,
-1.0f, -1.0f, 1.0f,
-1.0f, 1.0f, -1.0f,
1.0f, 1.0f, -1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
1.0f, -1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
1.0f, -1.0f, 1.0f
};
float fullScreenQuadVertices2[] = {
// positions //TexCoords
-1.0f, 1.0f, 0.0f, 0.0f, 1.0f,
-1.0f, -1.0f, 0.0f, 0.0f, 0.0f,
1.0f, -1.0f, 0.0f, 1.0f, 0.0f,
1.0f, -1.0f, 0.0f, 1.0f, 0.0f,
1.0f, 1.0f, 0.0f, 1.0f, 1.0f,
-1.0f, 1.0f, 0.0f, 0.0f, 1.0f,
};
// cube VAO
unsigned int cubeVAO, cubeVBO;
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)));
// skybox VAO
unsigned int skyboxVAO, skyboxVBO;
glGenVertexArrays(1, &skyboxVAO);
glGenBuffers(1, &skyboxVBO);
glBindVertexArray(skyboxVAO);
glBindBuffer(GL_ARRAY_BUFFER, skyboxVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(skyboxVertices), &skyboxVertices, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
// load textures
// -------------
vector<std::string> faces
{
"tilesets/skybox/right.jpg",
"tilesets/skybox/left.jpg",
"tilesets/skybox/top.jpg",
"tilesets/skybox/bottom.jpg",
"tilesets/skybox/front.jpg",
"tilesets/skybox/back.jpg"
};
std::vector<sf::Image> images;
for (unsigned int i = 0; i < 6; i++) {
sf::Image image;
image.loadFromFile(faces[i]);
images.push_back(image);
}
int width = images[0].getSize().x;
int height = images[0].getSize().y;
odfaeg::graphic::Texture cubeMapTex, cubeMapFBOTex, refractTex;
cubeMapTex.createCubeMap(width, height, images);
cubeMapFBOTex.createCubeMap(SCR_WIDTH, SCR_WIDTH);
refractTex.create(SCR_WIDTH, SCR_HEIGHT);
glEnable(GL_TEXTURE_CUBE_MAP);
sf::Context context(sf::ContextSettings(0, 0, 4, 4, 6), SCR_WIDTH, SCR_WIDTH);
context.setActive(true);
unsigned int skyboxVAOFBO;
glGenVertexArrays(1, &skyboxVAOFBO);
glBindVertexArray(skyboxVAOFBO);
glBindBuffer(GL_ARRAY_BUFFER, skyboxVBO);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
GLuint frameBufferID;
glGenFramebuffers(1, &frameBufferID);
glBindFramebuffer(GL_FRAMEBUFFER, frameBufferID);
glDrawBuffer(GL_COLOR_ATTACHMENT0);
glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, cubeMapFBOTex.getNativeHandle(), 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
{
glBindFramebuffer(GL_FRAMEBUFFER, 0);
std::cerr << "Impossible to create render texture (failed to link the target texture to the frame buffer)" << std::endl;
return false;
}
sf::Context context2(sf::ContextSettings(0, 0, 4, 4, 6), SCR_WIDTH, SCR_WIDTH);
context2.setActive(true);
unsigned int fsQuadVAOFBO, fsQuadVBOFBO;
glGenVertexArrays(1, &fsQuadVAOFBO);
glBindVertexArray(fsQuadVAOFBO);
glGenBuffers(1, &fsQuadVBOFBO);
glBindBuffer(GL_ARRAY_BUFFER, fsQuadVBOFBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(fullScreenQuadVertices2), &fullScreenQuadVertices2, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)(3 * sizeof(float)));
GLuint frameBufferID2;
glGenFramebuffers(1, &frameBufferID2);
glBindFramebuffer(GL_FRAMEBUFFER, frameBufferID2);
glDrawBuffer(GL_COLOR_ATTACHMENT0);
glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, refractTex.getNativeHandle(), 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
{
glBindFramebuffer(GL_FRAMEBUFFER, 0);
std::cerr << "Impossible to create render texture (failed to link the target texture to the frame buffer)" << std::endl;
return false;
}
// shader configuration
// --------------------
shader.setParameter("skybox", cubeMapFBOTex);
skyboxShader.setParameter("skybox", cubeMapTex);
refractCubeShader.setParameter("texture", refractTex);
int oldX = sf::Mouse::getPosition(window).x;
int oldY = sf::Mouse::getPosition(window).y;
sf::Clock time;
// run the main loop
bool running = true;
glEnable(GL_TEXTURE_CUBE_MAP);
while (running)
{
// per-frame time logic
// --------------------
// per-frame time logic
// --------------------
float currentFrame = time.getElapsedTime().asSeconds();
deltaTime = currentFrame - lastFrame;
lastFrame = currentFrame;
// handle events
sf::Event event;
while (window.pollEvent(event))
{
if (event.type == sf::Event::Closed)
{
// end the program
running = false;
}
else if (event.type == sf::Event::Resized)
{
// adjust the viewport when the window is resized
glViewport(0, 0, event.size.width, event.size.height);
}
else if (event.type == sf::Event::MouseMoved) {
if (firstMouse)
{
lastX = event.mouseMove.x;
lastY = event.mouseMove.y;
firstMouse = false;
}
float xoffset = event.mouseMove.x - lastX;
float yoffset = lastY - event.mouseMove.y; // reversed since y-coordinates go from bottom to top
lastX = event.mouseMove.x;
lastY = event.mouseMove.y;
camera.ProcessMouseMovement(xoffset, yoffset);
} else if (event.type == sf::Event::MouseWheelScrolled) {
camera.ProcessMouseScroll(event.mouseWheelScroll.delta);
}
}
if (sf::Keyboard::isKeyPressed(sf::Keyboard::Up)) {
camera.ProcessKeyboard(FORWARD, deltaTime);
}
if (sf::Keyboard::isKeyPressed(sf::Keyboard::Down)) {
camera.ProcessKeyboard(BACKWARD, deltaTime);
}
if (sf::Keyboard::isKeyPressed(sf::Keyboard::Right)) {
camera.ProcessKeyboard(RIGHT, deltaTime);
}
if (sf::Keyboard::isKeyPressed(sf::Keyboard::Left)) {
camera.ProcessKeyboard(LEFT, deltaTime);
}
// clear the buffers
// render
// ------
window.setActive(true);
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
context2.setActive(true);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
context.setActive(true);
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
for (unsigned int i = 0; i < 6; i++) {
glFramebufferTexture2D(GL_FRAMEBUFFER,GL_COLOR_ATTACHMENT0,GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, cubeMapFBOTex.getNativeHandle(), 0);
glViewport(0, 0, SCR_WIDTH, SCR_WIDTH);
glm::mat4 view;
if (i == 0) {
view = camera2.lookAt(FORWARD);
}
if (i == 1) {
view = camera2.lookAt(BACKWARD);
}
if (i == 2) {
view = camera2.lookAt(UP);
}
if (i == 3) {
view = camera2.lookAt(DOWN);
}
if (i == 4) {
view = camera2.lookAt(RIGHT);
}
if (i == 5) {
view = camera2.lookAt(LEFT);
}
glm::mat4 projection = glm::perspective(glm::radians(camera2.Zoom), (float)SCR_WIDTH / (float)SCR_HEIGHT, 0.1f, 100.0f);
odfaeg::graphic::Shader::bind(&skyboxShader);
Matrix4f viewMatrix = glmToODFAEGMatrix(view);
Matrix4f projectionMatrix = glmToODFAEGMatrix(projection);
skyboxShader.setParameter("view", viewMatrix);
skyboxShader.setParameter("projection", projectionMatrix);
// skybox cube
glBindVertexArray(skyboxVAOFBO);
glActiveTexture(GL_TEXTURE0);
odfaeg::graphic::Texture::bind(&cubeMapTex, odfaeg::graphic::Texture::Normalized);
glDrawArrays(GL_TRIANGLES, 0, 36);
glBindVertexArray(0);
}
glMemoryBarrier(GL_ALL_BARRIER_BITS);
glFlush();
//window.setActive(true);
context2.setActive(true);
glViewport(0, 0, SCR_WIDTH, SCR_HEIGHT);
// draw...
odfaeg::graphic::Shader::bind(&shader);
glm::mat4 model = glm::mat4(1.0f);
glm::mat4 view = camera.GetViewMatrix();
glm::mat4 projection = glm::perspective(glm::radians(camera.Zoom), (float)SCR_WIDTH / (float)SCR_HEIGHT, 0.1f, 100.0f);
Matrix4f modelMatrix = glmToODFAEGMatrix(model);
Matrix4f viewMatrix = glmToODFAEGMatrix(view);
Matrix4f projectionMatrix = glmToODFAEGMatrix(projection);
shader.setParameter("model", modelMatrix);
shader.setParameter("view", viewMatrix);
shader.setParameter("projection", projectionMatrix);
shader.setParameter("cameraPos", camera.Position.x,camera.Position.y,camera.Position.z);
// cubes
glBindVertexArray(cubeVAO);
glActiveTexture(GL_TEXTURE0);
odfaeg::graphic::Texture::bind(&cubeMapFBOTex, odfaeg::graphic::Texture::Normalized);
glDrawArrays(GL_TRIANGLES, 0, 36);
glBindVertexArray(0);
window.setActive(true);
//Draw skybox.
glDepthFunc(GL_LEQUAL); // change depth function so depth test passes when values are equal to depth buffer's content
odfaeg::graphic::Shader::bind(&skyboxShader);
view = glm::mat4(glm::mat3(camera.GetViewMatrix())); // remove translation from the view matrix
projection = glm::perspective(glm::radians(camera.Zoom), (float)SCR_WIDTH / (float)SCR_HEIGHT, 0.1f, 100.0f);
viewMatrix = glmToODFAEGMatrix(view);
skyboxShader.setParameter("view", viewMatrix);
skyboxShader.setParameter("projection", projectionMatrix);
// skybox cube
glBindVertexArray(skyboxVAO);
glActiveTexture(GL_TEXTURE0);
odfaeg::graphic::Texture::bind(&cubeMapTex, odfaeg::graphic::Texture::Normalized);
glDrawArrays(GL_TRIANGLES, 0, 36);
glBindVertexArray(0);
// refract cube.
glDepthFunc(GL_LESS);
model = glm::mat4(1.0f);
view = camera2.GetViewMatrix();
projection = glm::ortho(-1, 1, -1, 1);
modelMatrix = glmToODFAEGMatrix(model);
viewMatrix = glmToODFAEGMatrix(view);
projectionMatrix = glmToODFAEGMatrix(projection);
refractCubeShader.setParameter("model", modelMatrix);
refractCubeShader.setParameter("view", viewMatrix);
refractCubeShader.setParameter("projection", projectionMatrix);
odfaeg::graphic::Shader::bind(&refractCubeShader);
glBindVertexArray(fsQuadVAOFBO);
glActiveTexture(GL_TEXTURE0);
odfaeg::graphic::Texture::bind(&refractTex, odfaeg::graphic::Texture::Normalized);
glDrawArrays(GL_TRIANGLES, 0, 6);
glBindVertexArray(0);
window.display();
oldX = sf::Mouse::getPosition(window).x;
oldY = sf::Mouse::getPosition(window).y;
}
// optional: de-allocate all resources once they've outlived their purpose:
// ------------------------------------------------------------------------
glDeleteVertexArrays(1, &cubeVAO);
glDeleteVertexArrays(1, &skyboxVAO);
glDeleteVertexArrays(1, &skyboxVAOFBO);
glDeleteBuffers(1, &cubeVBO);
glDeleteBuffers(1, &skyboxVAO);
// release resources...
return 0;
}
Matrix4f glmToODFAEGMatrix(glm::mat4 mat) {
Matrix4f odfaegMatrix(mat[0][0], mat[0][1], mat[0][2], mat[0][3],
mat[1][0], mat[1][1], mat[1][2], mat[1][3],
mat[2][0], mat[2][1], mat[2][2], mat[2][3],
mat[3][0], mat[3][1], mat[3][2], mat[3][3]);
return odfaegMatrix;
}
It’s when I want to draw the cube which refract the skybox in a FBO that the problem occurs.
