Attachment 4117 Details for Bug 1236 – C source code - test case

C source code - test case

gltest.c (text/plain), 1.35 KB, created by Glynn Clements on 2005-12-17 18:06:51 UTC

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Creator: Glynn Clements

Created: 2005-12-17 18:06:51 UTC

Size: 1.35 KB

patch

obsolete

>
>#include <stdio.h>
>#include <stdlib.h>
>
>#include <GL/gl.h>
>#include <GL/glu.h>
>#include <GL/glut.h>
>
>static void draw_it(int col)
>{
>	GLint view[4];
>	int x0, y0, x1, y1;
>
>	glGetIntegerv(GL_VIEWPORT, view);
>
>	glColor3ub(col & 1 ? 255 : 0, col & 2 ? 255 : 0, col & 4 ? 255 : 0);
>
>	x0 = (3 * view[0] + 1 * view[2]) / 4;
>	y0 = (3 * view[1] + 1 * view[3]) / 4;
>	x1 = (1 * view[0] + 3 * view[2]) / 4;
>	y1 = (1 * view[1] + 3 * view[3]) / 4;
>
>	glRecti(x0, y0, x1, y1);
>}
>
>static void display(void)
>{
>	glDrawBuffer(GL_BACK);
>	glClear(GL_COLOR_BUFFER_BIT);
>	draw_it(1);
>
>	glutSwapBuffers();
>}
>
>void keyboard(unsigned char key, int x, int y)
>{
>	switch (key)
>	{
>	case '\e':
>		exit(0);
>		break;
>	case 'r':
>		glutPostRedisplay();
>		break;
>	case 'b':
>		glDrawBuffer(GL_BACK);
>		draw_it(2);
>		break;
>	case 'f':
>		glDrawBuffer(GL_FRONT);
>		draw_it(3);
>		break;
>	case 's':
>		glutSwapBuffers();
>		break;
>	}
>}
>
>static void reshape(int w, int h)
>{
>	glViewport(0, 0, w, h);
>	glPushAttrib(GL_TRANSFORM_BIT);
>	glMatrixMode(GL_PROJECTION);
>	glLoadIdentity();
>	gluOrtho2D(0, w, 0, h);
>	glPopAttrib();
>	glMatrixMode(GL_MODELVIEW);
>}
>
>int main(int argc, char **argv)
>{
>	glutInit(&argc, argv);
>	glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
>	glutInitWindowSize(640, 480);
>	glutCreateWindow("Test");
>
>	glutReshapeFunc(reshape);
>	glutDisplayFunc(display);
>	glutKeyboardFunc(keyboard);
>
>	glutMainLoop();
>
>	return 0;
>}
>

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