Attachment 139359 Details for Bug 106404 – example program

example program

gltest.c (text/plain), 1.15 KB, created by Todd on 2018-05-04 21:09:16 UTC

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Creator: Todd

Created: 2018-05-04 21:09:16 UTC

Size: 1.15 KB

patch

obsolete

>#include <stdio.h>
>
>#include <GL/glut.h>
>
>/* compile command:  gcc gltest.c -g -o gltest -lGL -lglut
> * 
> * must be run using xinit and DRI3 to see the issue.
> * 
> * Program will hang in draw function.
> * 
> * Comment out any one of 
> * 		glutInitWindowPosition
> * 		glutFullScreen
> *		glDrawBuffer(GL_FRONT) 
> * 
> * and it will execute properly.
> * 
> * It will also work if DRI2 is used.
> *		LIBGL_DRI3_DISABLE=1 ./gltest 
> * 
>*/
>
>static void
>idle(void)
>{
>	glutPostRedisplay();
>}
>
>static void
>reshape(int width, int height)
>{
>	glViewport(0, 0, (GLint) width, (GLint) height);
>}
>
>static void
>draw(void)
>{
>	printf("Draw!\n");
>
>	glBegin(GL_QUADS);
>		glVertex2f(-1.3333, 1.0);
>		glVertex2f(1.3333, 1.0);
>		glVertex2f(1.3333, -1.0);
>		glVertex2f(-1.3333,	-1.0);
>	glEnd();
>
>	glutSwapBuffers();
>}
>
>int main(int argc, char *argv[])
>{
>	glutInit(&argc, argv);
>	glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
>
>	glutInitWindowPosition(0, 0);
>	glutInitWindowSize(1024, 768);
>
>	glutCreateWindow("Screen");
>
>	glClearColor(0.0, 0.0, 0.0, 1.0);
>	
>	glutDisplayFunc(draw);
>	glutReshapeFunc(reshape);
>	glutIdleFunc(idle);
>
>	glutFullScreen();
>	glDrawBuffer(GL_FRONT);
>
>	glutMainLoop();
>
>	return 0;
>}

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Attachments on bug 106404: 139356 | 139357 | 139358 | 139359 | 141440

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