Attachment 65066 Details for Bug 53077 – program to reproduce the bug

program to reproduce the bug

msaa.c (text/plain), 1.93 KB, created by Chuanbo Weng on 2012-08-03 02:27:37 UTC

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Creator: Chuanbo Weng

Created: 2012-08-03 02:27:37 UTC

Size: 1.93 KB

patch

obsolete

>#include <GL/glut.h>
>#include <stdlib.h>
>#include <assert.h>
>
>GLuint framebuffer, renderbuffer;
>#define WIDTH 300
>#define HEIGHT 350
>int numSamples;
>
>void init()
>{
>	glGetIntegerv(GL_MAX_SAMPLES_EXT, &numSamples);
>
>	glGenFramebuffersEXT(1, &framebuffer);
>	glGenRenderbuffersEXT(1, &renderbuffer);
>	glBindFramebufferEXT(GL_FRAMEBUFFER, framebuffer);
>	glBindRenderbufferEXT(GL_RENDERBUFFER, renderbuffer);
>	glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER, numSamples, GL_RGBA, WIDTH, HEIGHT);
>	glFramebufferRenderbufferEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, renderbuffer);
>	glEnable (GL_MULTISAMPLE);
>	
>	glMatrixMode(GL_PROJECTION);
>	glLoadIdentity();
>	glOrtho(0.0, WIDTH, 0.0, HEIGHT, -1.0, 1.0);
>}
>
>void display()
>{
>	glBindFramebufferEXT(GL_FRAMEBUFFER,framebuffer);
>
>	glClearColor(0.0, 0.0, 0.0, 1.0);
>	glClear(GL_COLOR_BUFFER_BIT);
>
>	glEnable(GL_BLEND);
>	GLenum src_factor, dst_factor;
>	src_factor = GL_SRC_ALPHA;
>	dst_factor = GL_ONE_MINUS_SRC_ALPHA;
>	glBlendFunc (src_factor, dst_factor);
>	glColor4f (0.0, 1.0, 0.0, 0.7);
>	glMatrixMode(GL_MODELVIEW);
>	glBegin(GL_POLYGON);
>		glVertex3f (140, 55, 0.0);
>		glVertex3f (220, 55, 0.0);
>		glVertex3f (220, 165, 0.0);
>		glVertex3f (140, 165, 0.0);
>	glEnd();
>
>	glBindFramebufferEXT(GL_READ_FRAMEBUFFER, framebuffer);
>	glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER, 0);
>	glBlitFramebuffer(0, 0, WIDTH, HEIGHT, 0, 0, WIDTH, HEIGHT, GL_COLOR_BUFFER_BIT, GL_NEAREST);
>	glBindFramebuffer(GL_FRAMEBUFFER, 0);
>
>	glutSwapBuffers();
>}
>
>
>void keyboard(unsigned char key, int x, int y)
>{
>   switch (key) {
>      case 27:  /*  Escape Key  */
>         exit(0);
>         break;
>      default:
>         break;
>    }
>}
>
>int main(int argc, char** argv)
>{
>	glutInit(&argc, argv);
>	glutInitDisplayMode(GLUT_DOUBLE| GLUT_RGBA | GLUT_ALPHA);
>	glutInitWindowSize(WIDTH, HEIGHT);
>	glutInitWindowPosition(100, 100);
>	glutCreateWindow("msaa");
>	init();
>	glutDisplayFunc(display);
>	glutKeyboardFunc (keyboard);
>	glutMainLoop();
>	return 0;
>}

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Attachments on bug 53077: 65066

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