static bool
test_glx_extension_supported(void)
{
if (!epoxy_has_glx_extension(dpy, 0, "GLX_ARB_get_proc_address")) {
fputs("Incorrectly reported no support for GLX_ARB_get_proc_address "
"(should always be present in Linux ABI)\n",
stderr);
return false;
}
if (epoxy_has_glx_extension(dpy, 0, "GLX_EXT_ham_sandwich")) {
fputs("Incorrectly reported support for GLX_EXT_ham_sandwich\n",
stderr);
return false;
}
return true;
}
struct ephyr_glamor *
ephyr_glamor_glx_screen_init(xcb_window_t win)
{
GLXContext ctx;
struct ephyr_glamor *glamor;
GLXWindow glx_win;
glamor = calloc(1, sizeof(struct ephyr_glamor));
if (!glamor) {
FatalError("malloc");
return NULL;
}
glx_win = glXCreateWindow(dpy, fb_config, win, NULL);
if (ephyr_glamor_gles2) {
static const int context_attribs[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 2,
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_ES_PROFILE_BIT_EXT,
0,
};
if (epoxy_has_glx_extension(dpy, DefaultScreen(dpy),
"GLX_EXT_create_context_es2_profile")) {
ctx = glXCreateContextAttribsARB(dpy, fb_config, NULL, True,
context_attribs);
} else {
FatalError("Xephyr -glamor_gles2 rquires "
"GLX_EXT_create_context_es2_profile\n");
}
} else {
ctx = glXCreateContext(dpy, visual_info, NULL, True);
}
if (ctx == NULL)
FatalError("glXCreateContext failed\n");
if (!glXMakeCurrent(dpy, glx_win, ctx))
FatalError("glXMakeCurrent failed\n");
glamor->ctx = ctx;
glamor->win = win;
glamor->glx_win = glx_win;
ephyr_glamor_setup_texturing_shader(glamor);
return glamor;
}
struct ephyr_glamor *
ephyr_glamor_glx_screen_init(xcb_window_t win)
{
int (*oldErrorHandler) (Display *, XErrorEvent *);
static const float position[] = {
-1, -1,
1, -1,
1, 1,
-1, 1,
0, 1,
1, 1,
1, 0,
0, 0,
};
GLint old_vao;
GLXContext ctx;
struct ephyr_glamor *glamor;
GLXWindow glx_win;
glamor = calloc(1, sizeof(struct ephyr_glamor));
if (!glamor) {
FatalError("malloc");
return NULL;
}
glx_win = glXCreateWindow(dpy, fb_config, win, NULL);
if (ephyr_glamor_gles2) {
static const int context_attribs[] = {
GLX_CONTEXT_MAJOR_VERSION_ARB, 2,
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_ES_PROFILE_BIT_EXT,
0,
};
if (epoxy_has_glx_extension(dpy, DefaultScreen(dpy),
"GLX_EXT_create_context_es2_profile")) {
ctx = glXCreateContextAttribsARB(dpy, fb_config, NULL, True,
context_attribs);
} else {
FatalError("Xephyr -glamor_gles2 rquires "
"GLX_EXT_create_context_es2_profile\n");
}
} else {
if (epoxy_has_glx_extension(dpy, DefaultScreen(dpy),
"GLX_ARB_create_context")) {
static const int context_attribs[] = {
GLX_CONTEXT_PROFILE_MASK_ARB,
GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
GLX_CONTEXT_MAJOR_VERSION_ARB,
GLAMOR_GL_CORE_VER_MAJOR,
GLX_CONTEXT_MINOR_VERSION_ARB,
GLAMOR_GL_CORE_VER_MINOR,
0,
};
oldErrorHandler = XSetErrorHandler(ephyr_glx_error_handler);
ctx = glXCreateContextAttribsARB(dpy, fb_config, NULL, True,
context_attribs);
XSync(dpy, False);
XSetErrorHandler(oldErrorHandler);
} else {
ctx = NULL;
}
if (!ctx)
ctx = glXCreateContext(dpy, visual_info, NULL, True);
}
if (ctx == NULL)
FatalError("glXCreateContext failed\n");
if (!glXMakeCurrent(dpy, glx_win, ctx))
FatalError("glXMakeCurrent failed\n");
glamor->ctx = ctx;
glamor->win = win;
glamor->glx_win = glx_win;
ephyr_glamor_setup_texturing_shader(glamor);
if (epoxy_has_gl_extension("GL_ARB_vertex_array_object")) {
glGenVertexArrays(1, &glamor->vao);
glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &old_vao);
glBindVertexArray(glamor->vao);
} else
glamor->vao = 0;
glGenBuffers(1, &glamor->vbo);
glBindBuffer(GL_ARRAY_BUFFER, glamor->vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof (position), position, GL_STATIC_DRAW);
if (glamor->vao) {
ephyr_glamor_set_vertices(glamor);
glBindVertexArray(old_vao);
} else
glBindBuffer(GL_ARRAY_BUFFER, 0);
return glamor;
}