void application::init_context()
{
auto attrs = EmscriptenWebGLContextAttributes{};
attrs.stencil = EM_TRUE;
attrs.enableExtensionsByDefault = EM_FALSE;
emscripten_webgl_init_context_attributes(&attrs);
const auto ctx = emscripten_webgl_create_context(canvas_target, &attrs);
emscripten_webgl_make_context_current(ctx);
glctx = ctx;
emscripten_webgl_enable_extension(glctx, "ANGLE_instanced_arrays");
emscripten_set_mousedown_callback(
canvas_target, this, false, &enable_drag_handler);
emscripten_set_touchstart_callback(
canvas_target, this, false, &enable_drag_handler);
emscripten_set_mouseup_callback(
canvas_target, this, false, &disable_drag_handler);
emscripten_set_mouseleave_callback(
canvas_target, this, false, &disable_drag_handler);
emscripten_set_mouseout_callback(
canvas_target, this, false, &disable_drag_handler);
emscripten_set_touchend_callback(
canvas_target, this, false, &disable_drag_handler);
emscripten_set_touchcancel_callback(
canvas_target, this, false, &disable_drag_handler);
emscripten_set_mousemove_callback(
canvas_target, this, false, &mouse_move_handler);
emscripten_set_touchmove_callback(
canvas_target, this, false, &mouse_move_handler);
};
void ofxAppEmscriptenWindow::setup(const ofGLESWindowSettings & settings){
EGLint numConfigs;
EGLint majorVersion;
EGLint minorVersion;
EGLConfig config;
EGLint contextAttribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE, EGL_NONE };
EGLint attribList[] =
{
EGL_RED_SIZE, EGL_DONT_CARE,
EGL_GREEN_SIZE, EGL_DONT_CARE,
EGL_BLUE_SIZE, EGL_DONT_CARE,
EGL_ALPHA_SIZE, EGL_DONT_CARE,
EGL_DEPTH_SIZE, EGL_DONT_CARE,
EGL_STENCIL_SIZE, EGL_DONT_CARE,
EGL_SAMPLE_BUFFERS, EGL_DONT_CARE,
EGL_NONE
};
// Get Display
display = eglGetDisplay((EGLNativeDisplayType)EGL_DEFAULT_DISPLAY);
if ( display == EGL_NO_DISPLAY ){
ofLogError() << "coudln't get display";
return;
}
// Initialize EGL
if ( !eglInitialize(display, &majorVersion, &minorVersion) ){
ofLogError() << "couldn't initialize display";
return;
}
// Get configs
if ( !eglGetConfigs(display, NULL, 0, &numConfigs) ){
ofLogError() << "couldn't get configs";
return;
}
ofLogNotice("ofxAppEmscriptenWindow") << "Got " << numConfigs << " display configs";
// Choose config
if ( !eglChooseConfig(display, attribList, &config, 1, &numConfigs) ){
ofLogError() << "couldn't choose display";
return;
}
// Create a surface
surface = eglCreateWindowSurface(display, config, NULL, NULL);
if ( surface == EGL_NO_SURFACE ){
ofLogError() << "couldn't create surface";
return;
}
// Create a GL context
context = eglCreateContext(display, config, EGL_NO_CONTEXT, contextAttribs );
if ( context == EGL_NO_CONTEXT ){
ofLogError() << "couldn't create context";
return;
}
// Make the context current
if ( !eglMakeCurrent(display, surface, surface, context) ){
ofLogError() << "couldn't make current display";
return;
}
setWindowShape(settings.width,settings.height);
_renderer = make_shared<ofGLProgrammableRenderer>(this);
((ofGLProgrammableRenderer*)_renderer.get())->setup(2,0);
emscripten_set_keydown_callback(0,this,1,&keydown_cb);
emscripten_set_keyup_callback(0,this,1,&keyup_cb);
emscripten_set_mousedown_callback(0,this,1,&mousedown_cb);
emscripten_set_mouseup_callback(0,this,1,&mouseup_cb);
emscripten_set_mousemove_callback(0,this,1,&mousemoved_cb);
emscripten_set_touchstart_callback(0,this,1,&touch_cb);
emscripten_set_touchend_callback(0,this,1,&touch_cb);
emscripten_set_touchmove_callback(0,this,1,&touch_cb);
emscripten_set_touchcancel_callback(0,this,1,&touch_cb);
}