Attachment 125767 Details for Bug 97331 – Test case

Test case

draw-elements-base-vertex-test.c (text/x-csrc), 1.93 KB, created by Ruslan Kabatsayev on 2016-08-13 12:02:55 UTC

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Filename:

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Creator: Ruslan Kabatsayev

Created: 2016-08-13 12:02:55 UTC

Size: 1.93 KB

patch

obsolete

>#include <GL/glut.h>
>#include <GL/gl.h>
>
>void glDrawElementsBaseVertex(GLenum, GLsizei, GLenum, const GLvoid*, GLint);
>
>GLuint displayList;
>
>int useBaseVertex=1;
>int useDisplayList=1;
>
>void draw()
>{
>    typedef struct Vertex
>    {
>        GLfloat x, y;
>        GLfloat r, g, b;
>    } Vertex;
>    static const Vertex vertices[] =
>    {
>       {-1, 1,  1, 0, 0,},
>       { 1,-1,  0, 1, 0,},
>       {-1,-1,  0, 1, 0,},
>       {-1, 1,  0, 1, 0,},
>    };
>    static const GLushort indices[] = { 0,1,2 };
>
>    glEnableClientState(GL_VERTEX_ARRAY);
>    glEnableClientState(GL_COLOR_ARRAY);
>    glVertexPointer(2, GL_FLOAT, sizeof(Vertex), (char*)vertices+offsetof(Vertex,x));
>    glColorPointer(3, GL_FLOAT, sizeof(Vertex), (char*)vertices+offsetof(Vertex,r));
>    if(useBaseVertex)
>        glDrawElementsBaseVertex(GL_TRIANGLES, sizeof indices/sizeof*indices,
>                                 GL_UNSIGNED_SHORT, indices, 1);
>    else
>        glDrawElements(GL_TRIANGLES, sizeof indices/sizeof*indices,
>                       GL_UNSIGNED_SHORT, indices);
>}
>
>int init()
>{
>    displayList=glGenLists(1);
>    glNewList(displayList,GL_COMPILE);
>    draw();
>    glEndList();
>    return 1;
>}
>
>void display()
>{
>    static int inited;
>    if(!inited) init();
>
>    glClearColor(0,0,0,0);
>    glClear(GL_COLOR_BUFFER_BIT);
>
>    if(useDisplayList)
>        glCallList(displayList);
>    else
>        draw();
>
>    glutSwapBuffers();
>}
>
>void reshape(int width, int height)
>{
>    glViewport(0, 0, width, height);
>    glMatrixMode(GL_PROJECTION);
>    glOrtho(-2,2,-2,2,-2,2);
>}
>
>int main(int argc, char** argv)
>{
>    if(argc>1)
>    {
>        const int mode=argv[1][0]-'0';
>        useBaseVertex=mode&1;
>        useDisplayList=mode&2;
>    }
>    glutInit(&argc, argv);
>    glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
>    glutInitWindowSize (300, 300);
>    glutCreateWindow ("DrawElementsBaseVertex test");
>    glutReshapeFunc(reshape);
>    glutDisplayFunc(display);
>    glutMainLoop();
>    return 0;
>}

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Attachments on bug 97331: 125767

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