Attachment 125839 Details for Bug 97351 – Test case

Test case

draw-elements-base-vertex-test.c (text/x-csrc), 2.23 KB, created by Ruslan Kabatsayev on 2016-08-17 09:49:20 UTC

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Filename:

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Creator: Ruslan Kabatsayev

Created: 2016-08-17 09:49:20 UTC

Size: 2.23 KB

patch

obsolete

>#include <stdlib.h>
>#include <stdio.h>
>#include <string.h>
>#define GL_GLEXT_PROTOTYPES
>#include <GL/gl.h>
>#include <GL/glext.h>
>#include <GL/glut.h>
>
>void* readFile(const char* filename, long* size)
>{
>    FILE*const fp=fopen(filename,"r");
>    if(!fp) abort();
>    if(fseek(fp,0,SEEK_END)) abort();
>    *size=ftell(fp);
>    if(fseek(fp,0,SEEK_SET)) abort();
>    void* data=malloc(*size);
>    if(fread(data,*size,1,fp)!=1) abort();
>    return data;
>}
>
>#define VERTEX_OFFSET 2998
>int init()
>{
>    GLuint verticesId, indicesId;
>    glGenBuffersARB(1,&verticesId);
>    glBindBufferARB(GL_ARRAY_BUFFER,verticesId);
>    GLint coords[VERTEX_OFFSET*2+8]={0,10, 10,0, -10,0, 0,-10, /*zeros*/};
>    static const GLint movedCoords[8]={10,-10, 10,10, -10,-10, -10,10};
>    memcpy((char*)coords+sizeof coords-sizeof movedCoords,movedCoords,sizeof movedCoords);
>    glBufferDataARB(GL_ARRAY_BUFFER,sizeof coords,coords,GL_STATIC_DRAW);
>    glGenBuffersARB(1,&indicesId);
>    glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER,indicesId);
>    static const unsigned char indices[]={0,1,2,3};
>    glBufferDataARB(GL_ELEMENT_ARRAY_BUFFER,sizeof indices,indices,GL_STATIC_DRAW);
>
>    return 1;
>}
>
>void display()
>{
>    static int frame;
>    static int inited;
>    if(!inited) init();
>
>    glClearColor(0.25,frame%2 ? 1 : 0.5,1,1);
>    glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
>    glMatrixMode(GL_PROJECTION);
>    glLoadIdentity();
>    glOrtho(-20,20,-20,20,-20,20);
>    glVertexPointer(2,GL_INT,2*sizeof(GLint),0);
>    glEnableClientState(GL_VERTEX_ARRAY);
>    glColor3f(0.25,0.5,0);
>    if(++frame%2)
>        glDrawElementsBaseVertex(GL_TRIANGLE_STRIP,4,GL_UNSIGNED_BYTE,0,VERTEX_OFFSET);
>    else
>        glDrawElements(GL_TRIANGLE_STRIP,4,GL_UNSIGNED_BYTE,0);
>
>    glFlush();
>    glutSwapBuffers();
>}
>
>void timerFunc(int value)
>{
>    glutPostRedisplay();
>    glutTimerFunc(500,timerFunc,0);
>}
>
>void reshape(int width, int height)
>{
>    glViewport(0, 0, width, height);
>}
>
>int main(int argc, char** argv)
>{
>    glutInit(&argc, argv);
>    glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
>    glutInitWindowSize (1024, 600);
>    glutCreateWindow ("DrawElementsBaseVertex test");
>    glutReshapeFunc(reshape);
>    glutDisplayFunc(display);
>    glutTimerFunc(500,timerFunc,0);
>    glutMainLoop();
>    return 0;
>}

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Attachments on bug 97351: 125791 | 125839 | 125853

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