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RenderCompositorEGL.cpp
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RenderCompositorEGL.cpp
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "RenderCompositorEGL.h"
#include "GLContext.h"
#include "GLContextEGL.h"
#include "GLContextProvider.h"
#include "GLLibraryEGL.h"
#include "mozilla/webrender/RenderThread.h"
#include "mozilla/widget/CompositorWidget.h"
#ifdef MOZ_WAYLAND
# include "mozilla/widget/GtkCompositorWidget.h"
# include <gdk/gdk.h>
# include <gdk/gdkx.h>
#endif
#ifdef MOZ_WIDGET_ANDROID
# include "mozilla/widget/AndroidCompositorWidget.h"
# include "GeneratedJNIWrappers.h"
# include <android/native_window.h>
# include <android/native_window_jni.h>
#endif
namespace mozilla::wr {
/* static */
UniquePtr<RenderCompositor> RenderCompositorEGL::Create(
RefPtr<widget::CompositorWidget> aWidget) {
#ifdef MOZ_WAYLAND
if (!gdk_display_get_default() ||
GDK_IS_X11_DISPLAY(gdk_display_get_default())) {
return nullptr;
}
#endif
if (!RenderThread::Get()->SharedGL()) {
gfxCriticalNote << "Failed to get shared GL context";
return nullptr;
}
return MakeUnique<RenderCompositorEGL>(aWidget);
}
EGLSurface RenderCompositorEGL::CreateEGLSurface() {
EGLSurface surface = EGL_NO_SURFACE;
surface = gl::GLContextEGL::CreateEGLSurfaceForCompositorWidget(
mWidget, gl::GLContextEGL::Cast(gl())->mConfig);
if (surface == EGL_NO_SURFACE) {
gfxCriticalNote << "Failed to create EGLSurface";
}
return surface;
}
RenderCompositorEGL::RenderCompositorEGL(
RefPtr<widget::CompositorWidget> aWidget)
: RenderCompositor(std::move(aWidget)), mEGLSurface(EGL_NO_SURFACE) {}
RenderCompositorEGL::~RenderCompositorEGL() {
#ifdef MOZ_WIDGET_ANDROID
java::GeckoSurfaceTexture::DestroyUnused((int64_t)gl());
java::GeckoSurfaceTexture::DetachAllFromGLContext((int64_t)gl());
#endif
DestroyEGLSurface();
}
bool RenderCompositorEGL::BeginFrame() {
#ifdef MOZ_WAYLAND
if (mEGLSurface == EGL_NO_SURFACE) {
gfxCriticalNote
<< "We don't have EGLSurface to draw into. Called too early?";
return false;
}
if (mWidget->AsX11()) {
mWidget->AsX11()->SetEGLNativeWindowSize(GetBufferSize());
}
#endif
if (!MakeCurrent()) {
gfxCriticalNote << "Failed to make render context current, can't draw.";
return false;
}
#ifdef MOZ_WIDGET_ANDROID
java::GeckoSurfaceTexture::DestroyUnused((int64_t)gl());
gl()->MakeCurrent(); // DestroyUnused can change the current context!
#endif
return true;
}
RenderedFrameId RenderCompositorEGL::EndFrame(
const nsTArray<DeviceIntRect>& aDirtyRects) {
RenderedFrameId frameId = GetNextRenderFrameId();
if (mEGLSurface != EGL_NO_SURFACE) {
gl()->SwapBuffers();
}
return frameId;
}
void RenderCompositorEGL::Pause() {
#ifdef MOZ_WIDGET_ANDROID
java::GeckoSurfaceTexture::DestroyUnused((int64_t)gl());
java::GeckoSurfaceTexture::DetachAllFromGLContext((int64_t)gl());
#endif
DestroyEGLSurface();
}
bool RenderCompositorEGL::Resume() {
#ifdef MOZ_WIDGET_ANDROID
// Destroy EGLSurface if it exists.
DestroyEGLSurface();
mEGLSurface = CreateEGLSurface();
gl::GLContextEGL::Cast(gl())->SetEGLSurfaceOverride(mEGLSurface);
// Query the new surface size as this may have changed. We cannot use
// mWidget->GetClientSize() due to a race condition between nsWindow::Resize()
// being called and the frame being rendered after the surface is resized.
EGLNativeWindowType window = mWidget->AsAndroid()->GetEGLNativeWindow();
JNIEnv* const env = jni::GetEnvForThread();
ANativeWindow* const nativeWindow =
ANativeWindow_fromSurface(env, reinterpret_cast<jobject>(window));
const int32_t width = ANativeWindow_getWidth(nativeWindow);
const int32_t height = ANativeWindow_getHeight(nativeWindow);
mEGLSurfaceSize = LayoutDeviceIntSize(width, height);
ANativeWindow_release(nativeWindow);
#elif defined(MOZ_WAYLAND)
// Destroy EGLSurface if it exists and create a new one. We will set the
// swap interval after MakeCurrent() has been called.
DestroyEGLSurface();
mEGLSurface = CreateEGLSurface();
if (mEGLSurface != EGL_NO_SURFACE) {
// We have a new EGL surface, which on wayland needs to be configured for
// non-blocking buffer swaps. We need MakeCurrent() to set our current EGL
// context before we call eglSwapInterval, which is why we do it here rather
// than where the surface was created.
const auto& gle = gl::GLContextEGL::Cast(gl());
const auto& egl = gle->mEgl;
MakeCurrent();
// Make eglSwapBuffers() non-blocking on wayland.
egl->fSwapInterval(egl->Display(), 0);
} else {
RenderThread::Get()->HandleWebRenderError(WebRenderError::NEW_SURFACE);
}
#endif
return true;
}
gl::GLContext* RenderCompositorEGL::gl() const {
return RenderThread::Get()->SharedGL();
}
bool RenderCompositorEGL::MakeCurrent() {
gl::GLContextEGL::Cast(gl())->SetEGLSurfaceOverride(mEGLSurface);
return gl()->MakeCurrent();
}
void RenderCompositorEGL::DestroyEGLSurface() {
const auto& gle = gl::GLContextEGL::Cast(gl());
const auto& egl = gle->mEgl;
// Release EGLSurface of back buffer before calling ResizeBuffers().
if (mEGLSurface) {
gle->SetEGLSurfaceOverride(EGL_NO_SURFACE);
egl->fDestroySurface(egl->Display(), mEGLSurface);
mEGLSurface = nullptr;
}
}
LayoutDeviceIntSize RenderCompositorEGL::GetBufferSize() {
#ifdef MOZ_WIDGET_ANDROID
return mEGLSurfaceSize;
#else
return mWidget->GetClientSize();
#endif
}
CompositorCapabilities RenderCompositorEGL::GetCompositorCapabilities() {
CompositorCapabilities caps;
caps.virtual_surface_size = 0;
return caps;
}
} // namespace mozilla::wr