Attachment 43618 Details for Bug 34545 – the test case

the test case

immedcrash.c (text/x-csrc), 1.54 KB, created by Wiktor Janas on 2011-02-21 13:13:04 UTC

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Creator: Wiktor Janas

Created: 2011-02-21 13:13:04 UTC

Size: 1.54 KB

patch

obsolete

>#define _GNU_SOURCE
>#include <stdlib.h>
>#include <stdio.h>
>#include <math.h>
>
>#define GL_GLEXT_PROTOTYPES
>#include <GL/gl.h>
>#include <GL/glut.h>
>
>static GLfloat verts[32*3] = {0,0,0}, colors[32*3] = {1,1,1};
>
>static void render(void)
>{
>    glClear(GL_COLOR_BUFFER_BIT);
>    glDrawArrays(GL_TRIANGLE_FAN, 0, 32);
>    glutSwapBuffers();
>}
>
>int main (int argc, char *argv[])
>{
>    glutInit(&argc, argv);
>    glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB);
>    glutInitWindowSize(512,512);
>    glutCreateWindow("r300g immed crash test");
>
>    glClearColor(1,1,1,1);
>    for(int i=0,p=3,q=3; i<31; i++) {
>        verts[p++] = cos(i/31.*2.*M_PI);
>        verts[p++] = sin(i/31.*2.*M_PI);
>        verts[p++] = 0;
>        colors[q++] = .5+.5*verts[p-3];
>        colors[q++] = .5+.5*verts[p-2];
>        colors[q++] = 1.;
>    }
>
>    GLuint vbo;
>
>/*  this works:
>    glGenBuffersARB(1, &vbo);
>    glBindBufferARB(GL_ARRAY_BUFFER, vbo);
>    glBufferDataARB(GL_ARRAY_BUFFER, 32*3*sizeof(GL_FLOAT), verts, GL_STATIC_DRAW);
>    glVertexPointer(3, GL_FLOAT, 0, NULL);
>    glBindBufferARB(GL_ARRAY_BUFFER, 0); */
>    
>/*  this crashes: */
>    glVertexPointer(3, GL_FLOAT, 0, verts);
>
>    glGenBuffersARB(1, &vbo);
>    glBindBufferARB(GL_ARRAY_BUFFER, vbo);
>    glBufferDataARB(GL_ARRAY_BUFFER, 32*3*sizeof(GL_FLOAT), colors, GL_STATIC_DRAW);
>    glColorPointer(3, GL_FLOAT, 0, NULL);
>    glBindBufferARB(GL_ARRAY_BUFFER, 0);
>
>    glColor3f(0,0,0);
>    glEnableClientState(GL_VERTEX_ARRAY);
>    glEnableClientState(GL_COLOR_ARRAY);
>
>    glutDisplayFunc(render);
>    glutMainLoop();
>
>    return 0;
>}

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Attachments on bug 34545: 43618

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