Linking with uncompiled shader in Ubuntu

Question

I need to load a *.glsl to draw something. My environment is Ubuntu 13.04, hence it doesn\'t exist GLuint InitShader (GLuint, GLuint). It is my config for object creation, pre-l

Answer 1

const char *vertex_source = "./shader/vshader21.glsl";
                             ^^^^^^^^^^^^^^^^^^^^^^^ wat
glShaderSource (vertex_shader, 1, &vertex_source, NULL);

glShaderSource() does not work that way!

string: Specifies an array of pointers to strings containing the source code to be loaded into the shader.

There's absolutely nothing in there about interpreting string as a filesystem path.

You need to load the shader from file yourself, then pass the string(s) containing the shader code to glShaderSource().