sajis997

11-09-2014, 10:08 AM

Hello forum;

I have the following inside the window resize callback :

void framebuffer_size_callback(GLFWwindow *window,int width,int height)

{

if(height < 1)

height = 1;

winWidth = width;

winHeight = height;

//set the viewport matrix

ViewportMatrix = glm::mat4(glm::vec4((GLfloat)winWidth/2.0f,0.0f,0.0f,0.0f),

glm::vec4(0.0f,(GLfloat)winHeight/2.0f,0.0f,0.0f),

glm::vec4(0.0f,0.0f,1.0f,0.0f),

glm::vec4((GLfloat)winWidth/2.0f,(GLfloat)winHeight/2.0f,0.0f,1.0f));

//setup the projection matrix

ProjectionMatrix = glm::perspective(50.0f,(GLfloat)(winWidth/winHeight),0.1f,1000.0f);

glViewport(0,0,winWidth,winHeight);

}

And i have called the above in the following manner inside the main function:

......................

......................

glfwSetErrorCallback(error_callback);

glfwSetFramebufferSizeCallback(window,framebuffer_ size_callback);

glfwSetScrollCallback(window,scroll_callback);

glfwSetKeyCallback(window,key_callback);

//make the current window context the current one

glfwMakeContextCurrent(window);

glfwSwapInterval(1);

glfwGetFramebufferSize(window,&winWidth,&winHeight);

framebuffer_size_callback(window,winWidth,winHeigh t);

......................

......................

I am having the following error :

**************** OpenGL Driver Information *********************

OpenGL version: 4.4.0 NVIDIA 340.46

GLSL version: 4.40 NVIDIA via Cg compiler

GLEW version: 1.10.0

OpenGL vendor: NVIDIA Corporation

Renderer: GeForce GTX 560M/PCIe/SSE2

************************************************** **************

SolidWiredFrame: /usr/include/glm/gtc/matrix_transform.inl:247: glm::detail::tmat4x4<T, (glm::precision)0u> glm::perspective(const valType&, const valType&, const valType&, const valType&) [with valType = float]: Assertion `aspect != valType(0)' failed.

it is pointing to the opengl mathematics library i am using to do all the affine transformation. Any idea ?

I have the following inside the window resize callback :

void framebuffer_size_callback(GLFWwindow *window,int width,int height)

{

if(height < 1)

height = 1;

winWidth = width;

winHeight = height;

//set the viewport matrix

ViewportMatrix = glm::mat4(glm::vec4((GLfloat)winWidth/2.0f,0.0f,0.0f,0.0f),

glm::vec4(0.0f,(GLfloat)winHeight/2.0f,0.0f,0.0f),

glm::vec4(0.0f,0.0f,1.0f,0.0f),

glm::vec4((GLfloat)winWidth/2.0f,(GLfloat)winHeight/2.0f,0.0f,1.0f));

//setup the projection matrix

ProjectionMatrix = glm::perspective(50.0f,(GLfloat)(winWidth/winHeight),0.1f,1000.0f);

glViewport(0,0,winWidth,winHeight);

}

And i have called the above in the following manner inside the main function:

......................

......................

glfwSetErrorCallback(error_callback);

glfwSetFramebufferSizeCallback(window,framebuffer_ size_callback);

glfwSetScrollCallback(window,scroll_callback);

glfwSetKeyCallback(window,key_callback);

//make the current window context the current one

glfwMakeContextCurrent(window);

glfwSwapInterval(1);

glfwGetFramebufferSize(window,&winWidth,&winHeight);

framebuffer_size_callback(window,winWidth,winHeigh t);

......................

......................

I am having the following error :

**************** OpenGL Driver Information *********************

OpenGL version: 4.4.0 NVIDIA 340.46

GLSL version: 4.40 NVIDIA via Cg compiler

GLEW version: 1.10.0

OpenGL vendor: NVIDIA Corporation

Renderer: GeForce GTX 560M/PCIe/SSE2

************************************************** **************

SolidWiredFrame: /usr/include/glm/gtc/matrix_transform.inl:247: glm::detail::tmat4x4<T, (glm::precision)0u> glm::perspective(const valType&, const valType&, const valType&, const valType&) [with valType = float]: Assertion `aspect != valType(0)' failed.

it is pointing to the opengl mathematics library i am using to do all the affine transformation. Any idea ?