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Reduce the amount of EGL buffer swapping the ML port is doing

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This commit is contained in:
Alan Jeffrey 2018-10-29 12:13:34 -05:00
parent 0ec0f705b6
commit 0124baa82f
2 changed files with 23 additions and 35 deletions
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42
ports/libmlservo/src/lib.rs
View file

@ -7,6 +7,11 @@ extern crate egl;
extern crate servo;
extern crate smallvec;
use egl::egl::EGLContext;
use egl::egl::EGLDisplay;
use egl::egl::EGLSurface;
use egl::egl::MakeCurrent;
use egl::egl::SwapBuffers;
use egl::eglext::eglGetProcAddress;
use servo::BrowserId;
use servo::Servo;
@ -36,10 +41,6 @@ use std::os::raw::c_void;
use std::path::PathBuf;
use std::rc::Rc;
type EGLContext = *const c_void;
type EGLSurface = *const c_void;
type EGLDisplay = *const c_void;
type ServoInstance = *mut c_void;
#[repr(u32)]
@ -58,9 +59,9 @@ pub struct MLLogger(extern "C" fn (MLLogLevel, *const c_char));
const LOG_LEVEL: log::LevelFilter = log::LevelFilter::Info;
#[no_mangle]
pub unsafe extern "C" fn init_servo(_ctxt: EGLContext,
_surf: EGLSurface,
_disp: EGLDisplay,
pub unsafe extern "C" fn init_servo(ctxt: EGLContext,
surf: EGLSurface,
disp: EGLDisplay,
logger: MLLogger,
url: *const c_char,
width: u32,
@ -77,7 +78,15 @@ pub unsafe extern "C" fn init_servo(_ctxt: EGLContext,
});
info!("OpenGL version {}", gl.get_string(gl::VERSION));
let window = Rc::new(WindowInstance::new(gl, width, height, hidpi));
let window = Rc::new(WindowInstance {
ctxt: ctxt,
surf: surf,
disp: disp,
gl: gl,
width: width,
height: height,
hidpi: hidpi,
});
info!("Starting servo");
let mut servo = Box::new(Servo::new(window));
@ -110,28 +119,23 @@ pub unsafe extern "C" fn discard_servo(servo: ServoInstance) {
}
struct WindowInstance {
ctxt: EGLContext,
surf: EGLSurface,
disp: EGLDisplay,
gl: Rc<Gl>,
width: u32,
height: u32,
hidpi: f32,
}
impl WindowInstance {
fn new(gl: Rc<Gl>, width: u32, height: u32, hidpi: f32) -> WindowInstance {
WindowInstance {
gl: gl,
width: width,
height: height,
hidpi: hidpi,
}
}
}
impl WindowMethods for WindowInstance {
fn present(&self) {
SwapBuffers(self.disp, self.surf);
}
fn prepare_for_composite(&self, _w: Length<u32, DevicePixel>, _h: Length<u32, DevicePixel>) -> bool {
MakeCurrent(self.disp, self.surf, self.surf, self.ctxt);
self.gl.viewport(0, 0, self.width as i32, self.height as i32);
true
}

16
support/magicleap/Servo2D/code/src/Servo2D.cpp
View file

@ -113,8 +113,6 @@ int Servo2D::init() {
EGLContext ctx = plane_->getEGLContext();
EGLSurface surf = plane_->getEGLSurface();
EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglMakeCurrent(dpy, surf, surf, ctx);
glViewport(0, 0, VIEWPORT_W, VIEWPORT_H);
// Hook into servo
servo_ = init_servo(ctx, surf, dpy, logger, "https://servo.org", VIEWPORT_H, VIEWPORT_W, HIDPI);
@ -124,9 +122,6 @@ int Servo2D::init() {
return 1;
}
// Flush GL
glFlush();
eglSwapBuffers(dpy, surf);
return 0;
}
@ -173,20 +168,9 @@ void Servo2D::instanceInitialScenes() {
}
bool Servo2D::updateLoop(float fDelta) {
// Get the EGL context, surface and display.
EGLContext ctx = plane_->getEGLContext();
EGLSurface surf = plane_->getEGLSurface();
EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglMakeCurrent(dpy, surf, surf, ctx);
glViewport(0, 0, VIEWPORT_W, VIEWPORT_H);
// Hook into servo
heartbeat_servo(servo_);
// Flush GL
glFlush();
eglSwapBuffers(dpy, surf);
// Return true for your app to continue running, false to terminate the app.
return true;
}