Attachment 43116 Details for Bug 34042 – Example exhibiting the issue

Example exhibiting the issue

egl-surfaceless.c (text/x-csrc), 2.47 KB, created by Alexandros Frantzis on 2011-02-08 08:28:51 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Alexandros Frantzis

Created: 2011-02-08 08:28:51 UTC

Size: 2.47 KB

patch

obsolete

>#include <stdio.h>
>#include <string.h>
>
>#include <EGL/egl.h>
>#include <X11/Xlib.h>
>
>int main(void)
>{
>    int rgba_attribs[] = { EGL_RED_SIZE, 1,
>                           EGL_GREEN_SIZE, 1,
>                           EGL_BLUE_SIZE, 1,
>                           EGL_ALPHA_SIZE, 1,
>                           EGL_DEPTH_SIZE, 1,
>                           EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
>                           EGL_NONE };
>    Display *dpy;
>    int major, minor;
>    int num_configs;
>    EGLDisplay egl_display;
>    EGLDisplay egl_context;
>    EGLDisplay egl_context_dummy;
>    EGLConfig egl_config;
>    const char *exts;
>
>    dpy = XOpenDisplay(NULL);
>    if (!dpy) {
>        fprintf(stderr, "Failed to open display: %s\n", XDisplayName(0));
>        return 1;
>    }
>
>    egl_display = eglGetDisplay (EGL_DEFAULT_DISPLAY);
>    if (!egl_display) {
>        fprintf(stderr, "Failed eglGetDisplay %d\n", eglGetError());
>        return 1;
>    }
>
>    if (!eglInitialize(egl_display, &major, &minor)) {
>        fprintf(stderr, "Failed eglInitialize %d\n", eglGetError());
>        return 1;
>    }
>
>    eglChooseConfig(egl_display, rgba_attribs, &egl_config, 1, &num_configs);
>    if (num_configs == 0) {
>        fprintf(stderr, "Failed eglGetConfigs %d\n", eglGetError());
>        return 1;
>    }
>
>    eglBindAPI(EGL_OPENGL_API);
>
>    exts = eglQueryString(egl_display, EGL_EXTENSIONS);
>    fprintf(stderr, "%s\n", exts);
>    if (!strstr(exts, "EGL_KHR_surfaceless_opengl")) {
>        fprintf(stderr, "EGL doesn't support EGL_KHR_surfaceless_opengl\n");
>        return 1;
>    }
>
>    egl_context_dummy = eglCreateContext(egl_display, NULL, EGL_NO_CONTEXT, NULL);
>    if (!egl_context_dummy) {
>        fprintf(stderr, "eglCreateContext Dummy Failed: %x\n", eglGetError());
>        return 1;
>    }
>    egl_context = eglCreateContext(egl_display, egl_config, EGL_NO_CONTEXT, NULL);
>    if (!egl_context) {
>        fprintf(stderr, "eglCreateContext Normal Failed: %x\n", eglGetError());
>        return 1;
>    }
>
>    if (!eglMakeCurrent(egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, egl_context_dummy))
>        fprintf(stderr, "eglMakeCurrent Dummy Failed: 0x%x\n", eglGetError());
>    else
>        fprintf(stderr, "eglMakeCurrent Dummy Succeeded: 0x%x\n", eglGetError());
>
>    if (!eglMakeCurrent(egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, egl_context))
>        fprintf(stderr, "eglMakeCurrent Normal Failed: 0x%x\n", eglGetError());
>    else
>        fprintf(stderr, "eglMakeCurrent Normal Succeeded: 0x%x\n", eglGetError());
>
>}

Actions: View

Attachments on bug 34042: 43116

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.