/* Prints out the limits of the current OpenGL implementation.

Yes, you need to create a window in order to get the proper results from
glGet*; if you don't, you'll get huge values that change each time.

Implemented Fall 2003
Scott D. Anderson
*/

#include <stdio.h>
#include <tw.h>

void report(char type, char* name, int value) {
    GLfloat floatv[16];
    GLint intv[16];
    switch (type) {
    case 'f':
        glGetFloatv(value,floatv);
	twError();
        printf("%s is %f\n",name,floatv);
        break;
    case 'i':
        glGetIntegerv(value,intv);
	twError();
        printf("%s is %d\n",name,intv[0]);
        break;
    }
}


void display(void) {
}

int main(int argc, char** argv) {
    GLint intv[16];
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_ALPHA | GLUT_DEPTH | GLUT_ACCUM);
    glutInitWindowSize(50,50);
    glutCreateWindow(argv[0]);
    glutDisplayFunc(display);
    
    report('i',"GL_MAX_LIGHTS",GL_MAX_LIGHTS);

    printf("Depth of Frame Buffer\n");
    report('i',"GL_RED_BITS",GL_RED_BITS);
    report('i',"GL_GREEN_BITS",GL_GREEN_BITS);
    report('i',"GL_BLUE_BITS",GL_BLUE_BITS);
    report('i',"GL_ALPHA_BITS",GL_ALPHA_BITS);

    printf("Depth of Depth Buffer\n");
    report('i',"GL_DEPTH_BITS",GL_DEPTH_BITS);

    printf("Depth of Accumulation Buffer\n");
    report('i',"GL_ACCUM_RED_BITS",GL_ACCUM_RED_BITS);
    report('i',"GL_ACCUM_GREEN_BITS",GL_ACCUM_GREEN_BITS);
    report('i',"GL_ACCUM_BLUE_BITS",GL_ACCUM_BLUE_BITS);
    report('i',"GL_ACCUM_ALPHA_BITS",GL_ACCUM_ALPHA_BITS);


    //glutMainLoop();
    return 0;
}