Attachment 140029 Details for Bug 106824 – example of using glDrawElements

example of using glDrawElements

hellogl.cpp (text/plain), 1.07 KB, created by Milan on 2018-06-05 07:36:14 UTC

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Creator: Milan

Created: 2018-06-05 07:36:14 UTC

Size: 1.07 KB

patch

obsolete

>
>#define GL_GLEXT_PROTOTYPES
>
>#include <GL/gl.h>
>#include <GL/glut.h>
>
>void refresh(void)
>{
>        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
>
>	GLint vertices[] =
>	{
>	    0,0,0,
>	    1,0,0,
>	    1,1,0,
>	    0,1,0,
>	    -1,1,0,
>	    -1,0,0,
>	};
>
>	GLubyte colors[] =
>	{
>	    255, 0, 0,
>	    0, 255, 0,
>	    0, 0, 255,
>	    255, 255, 0,
>	    255, 0, 255,
>	    0, 255, 255,
>	};
>
>	GLubyte indices[]=
>	{
>	    0,1,2,3,
>	    0,3,4,5,
>	};
>
>	glEnableClientState( GL_COLOR_ARRAY );
>	glEnableClientState( GL_VERTEX_ARRAY );
>	glColorPointer( 3, GL_UNSIGNED_BYTE, 0, colors );
>	glVertexPointer( 3, GL_INT, 0, vertices );
>	glDrawElements( GL_QUADS, sizeof( indices ) / sizeof( GLubyte ), GL_UNSIGNED_BYTE, indices );
>
>	glDisableClientState( GL_COLOR_ARRAY );
>	glDisableClientState( GL_VERTEX_ARRAY );
>
>	glutSwapBuffers();
>	glutPostRedisplay();
>}
>
>int main(int argc, char** argv)
>{
>	glutInit(&argc, argv);
>	glutInitDisplayMode(GLUT_SINGLE);
>	glutInitWindowSize(300, 300);
>	glutInitWindowPosition(100, 100);
>
>	glutCreateWindow("Hello world");
>
>	glutDisplayFunc(refresh);
>	glutMainLoop();
>
>	return 0;
>}

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Attachments on bug 106824: 140029

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