OpenGL: shader connected to the program

Question

Is there a way to access the shaders attached to the program? That is, given the program, can I do something like:

vertexShader = getVertexShaderFromProgram(program); 

(I would like to register the compilation state of the shaders in my function, which checks my program, but I only save the link to the program, not the shaders.)

Answer 1

• glGetAttachedShaders() to get the names of the shaders attached to this program object.

• glGetShaderiv( ..., GL_SHADER_TYPE, ... ) to get the type (vertex, geometry, fragment) of the shader.

• glGetShaderiv( ..., GL_SHADER_SOURCE_LENGTH, ... ) for each shader name to find out how long the source has been located.

• glGetShaderSource() to get the source string for each attached shader.

EDIT . If you only need the names and types of shaders, you can stop after step 2.