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/* Copyright (c) Mark J. Kilgard, 1996. */
/* This program is freely distributable without licensing fees
and is provided without guarantee or warrantee expressed or
implied. This program is -not- in the public domain. */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <GL/glut.h>
extern testInit(int argc, char **argv, int width, int height);
extern testRender(void);
int testIterationsStep, testDisplayMode, testMinimumTestTime;
float timeEnd, timeStart;
int error;
int renders = 0, damaged = 0;
/* ARGSUSED */
void
report(int value)
{
float duration;
duration = (timeEnd - timeStart) / 1000.0;
printf("Renders/second = %g\n",
renders / duration);
printf(" after %d iterations over %g seconds\n",
renders, duration);
if (error != GL_NO_ERROR)
printf("OpenGL errors occurred during test; RESULTS ARE DUBIOUS.\n");
if (damaged != 1)
printf("Window disturbed during test; RESULTS ARE DUBIOUS.\n");
printf("\n");
exit(damaged != 1);
}
/* ARGSUSED */
void
ensureEventsGotten(int value)
{
/* Hack. Creating a new window _ensures_ any outstanding
expose event from popping the window will be retrieved. */
glutCreateWindow("dummy");
glutHideWindow();
glutTimerFunc(1, report, 0);
}
void
displayDone(void)
{
if (glutLayerGet(GLUT_NORMAL_DAMAGED))
damaged++;
}
/* ARGSUSED */
void
done(int value)
{
glFinish();
timeEnd = glutGet(GLUT_ELAPSED_TIME);
error = glGetError();
/* Pop the window. If the window was obscured by another
window during the test, raising the window should generate
an expose event we want to catch. */
glutPopWindow();
/* The test is over so only notice an expose and do not run
the testRender routine. */
glutDisplayFunc(displayDone);
glutTimerFunc(1, ensureEventsGotten, 0);
}
void
display(void)
{
int i;
if (glutLayerGet(GLUT_NORMAL_DAMAGED)) {
damaged++;
if (damaged == 1) {
glutTimerFunc(testMinimumTestTime * 1000, done, 0);
timeStart = glutGet(GLUT_ELAPSED_TIME);
}
}
for (i = 0; i < testIterationsStep; i++) {
testRender();
renders++;
}
glutPostRedisplay();
}
void
visible(int state)
{
if (state == GLUT_NOT_VISIBLE)
damaged++;
}
int
main(int argc, char **argv)
{
char *newArgv[100];
int newArgc, i;
/* Defaults; testInit may override these. */
testIterationsStep = 5;
testDisplayMode = GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH;
testMinimumTestTime = 10; /* seconds */
glutInit(&argc, argv);
newArgc = 1;
newArgv[0] = argv[0];
for (i = 1; i < argc; i++) {
if (!strcmp("-time", argv[i])) {
i++;
if (argv[i] == NULL) {
fprintf(stderr, "%s: -time option needs argument\n", argv[0]);
exit(1);
}
testMinimumTestTime = (int) strtol(argv[i], NULL, 0);
} else if (!strcmp("-mode", argv[i])) {
i++;
if (argv[i] == NULL) {
fprintf(stderr, "%s: -mode option needs argument\n", argv[0]);
exit(1);
}
testDisplayMode = (int) strtol(argv[i], NULL, 0);
} else if (!strcmp("-iters", argv[i])) {
i++;
if (argv[i] == NULL) {
fprintf(stderr, "%s: -mode option needs argument\n", argv[0]);
exit(1);
}
testIterationsStep = (int) strtol(argv[i], NULL, 0);
} else {
newArgv[newArgc] = argv[i];
newArgc++;
}
}
newArgv[newArgc] = NULL;
glutInitDisplayMode(testDisplayMode);
glutCreateWindow("OpenGL performance test");
glutDisplayFunc(display);
glutVisibilityFunc(visible);
testInit(newArgc, newArgv,
glutGet(GLUT_WINDOW_WIDTH), glutGet(GLUT_WINDOW_HEIGHT));
glutMainLoop();
return 0; /* ANSI C requires main to return int. */
}
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