Attachment 146275 Details for Bug 282604

testcase

a2.cpp (text/x-c++src), 2.22 KB, created by Lubos Lunak on 2007-06-14 12:56:59 UTC

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Filename:

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Creator: Lubos Lunak

Created: 2007-06-14 12:56:59 UTC

Size: 2.22 KB

patch

obsolete

>#include <X11/Xlib.h>
>#include <stdio.h>
>#include <GL/glx.h>
>
>bool aaa( Display* dpy );
>
>int main( int argc, char* argv[] )
>    {
>    Display* dpy = XOpenDisplay( NULL );
>    return aaa( dpy );
>    }
>
>bool aaa( Display* dpy )
>{
>    const char* renderer;
>#define HAVE_GLXCHOOSEVISUAL
>#ifdef HAVE_GLXCHOOSEVISUAL
>    int attribSingle[] = {
>        GLX_RGBA,
>        GLX_RED_SIZE,   1,
>        GLX_GREEN_SIZE, 1,
>        GLX_BLUE_SIZE,  1,
>        None
>    };
>    int attribDouble[] = {
>      GLX_RGBA,
>      GLX_RED_SIZE, 1,
>      GLX_GREEN_SIZE, 1,
>      GLX_BLUE_SIZE, 1,
>      GLX_DOUBLEBUFFER,
>      None
>    };
>
>    XVisualInfo* visinfo = glXChooseVisual (
>        dpy, DefaultScreen( dpy ), attribSingle
>    );
>    if (visinfo)
>    {
>        GLXContext ctx = glXCreateContext ( dpy, visinfo, NULL, True );
>        if (glXIsDirect(dpy, ctx))
>        {
>            glXDestroyContext (dpy,ctx);
>            return true;
>        }
>
>        XSetWindowAttributes attr;
>        unsigned long mask;
>        Window root;
>        XVisualInfo *visinfo;
>        int width = 100, height = 100;
>        int scrnum = DefaultScreen( dpy );
>
>        root = RootWindow(dpy, scrnum);
>
>        visinfo = glXChooseVisual(dpy, scrnum, attribSingle);
>        if (!visinfo)
>        {
>            visinfo = glXChooseVisual(dpy, scrnum, attribDouble);
>            if (!visinfo)
>            {
>                fprintf(stderr, "Error: couldn't find RGB GLX visual\n");
>                return false;
>            }
>        }
>
>        attr.background_pixel = 0;
>        attr.border_pixel = 0;
>        attr.colormap = XCreateColormap(dpy, root, visinfo->visual, AllocNone);
>        attr.event_mask = StructureNotifyMask | ExposureMask;
>        mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
>
>        Window win = XCreateWindow(dpy, root, 0, 0, width, height,
>                                   0, visinfo->depth, InputOutput,
>                                   visinfo->visual, mask, &attr);
>
>        if ( glXMakeCurrent(dpy, win, ctx))
>            renderer = (const char *) glGetString(GL_RENDERER);
>        XDestroyWindow(dpy, win);
>        glXDestroyContext (dpy,ctx);
>
>        return false;
>    }
>    else
>    {
>        return false;
>    }
>#else
>#error no GL?
>    return false;
>#endif
>}

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Attachments on bug 282604: 146275 | 146279 | 146280