I trying to do a reflection for my ocean, and how can I inverse the pitch if I only have the viewmatrix in OpenGL becasue my camera is control by Utility::freeMovement( m_cameraMatrix, a_deltaTime, static_cast<float>(m_cameraSpeed));

and this video describe what I’m doing

https://www.youtube.com/watch?v=0NH9k4zTAqk&index=3&list=PLRIWtICgwaX23jiqVByUs0bqhnalNTNZh

from 11:19 to 12:19 thanks.

I have try so many method but does not work, giving me crazy results

First method:

```
tempCam = m_cameraMatrix;
tempCam[1].y *= -1;
glm::mat4 tempView = inverse(tempCam);
drawScene(m_projection , inverse(tempCam));
```

Second method:

```
tempCam = m_cameraMatrix;
tempCam[2] = glm::reflect(tempView[2] , glm::vec4(1,0,0,1));
tempCam[2].w = 0.0f;
glm::mat4 tempView = inverse(tempCam);
drawScene(m_projection , inverse(tempCam));
```

Third method:

```
tempCam = m_cameraMatrix;
tempCam [0].y *= -1;
tempCam [1].y *= -1;
tempCam [2].y *= -1;
glm::mat4 tempView = inverse(tempCam);
drawScene(m_projection , inverse(tempCam));
```

Forth method:

```
tempCam = m_cameraMatrix;
tempCam[2] = glm::reflect(tempCam[2] , glm::vec4(1,0,0,1));
tempCam[2].w = 0.0f;
tempCam[1].y *= -1;
glm::mat4 tempView = inverse(tempCam);
drawScene(m_projection , inverse(tempCam));
```

Fifth method:

```
tempCam = m_cameraMatrix;
tempCam[2] = glm::reflect(tempCam[2] , glm::vec4(1,0,0,1));
tempCam[2].w = 0.0f;
tempCam[1]= glm::reflect(tempCam[1] , glm::vec4(0,1,0,1));
tempCam[1].w = 0.0f;
glm::mat4 tempView = inverse(tempCam);
drawScene(m_projection , inverse(tempCam));
```