How to get the current state matrix

OpenGL OpenGL: Basic Coding
1

Hi,

How can I get the current opengl state mechine value(the state matrix), is there any opengl function to get the current matrix? Thanks a lot!

Leo

2

You mean something like this?

GLdouble projMatrix[16];
GLdouble modelMatrix[16];
glGetDoublev(GL_PROJECTION, projMatrix);
glGetDoublev(GL_MODELVIEW, modelMatrix);

All the glGetXX commands will get you various values depending on what you ask them for…

3

See this and this

4

Hi,

How many matrix stacks are used during opengl rendering usually, and What is the initial size of opengl state such as MODELVIEW matrix stack?

Thanks,

leo

5

These details are all in the docs and specs.
http://www.opengl.org/sdk/docs/man/