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/* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
/* 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 "SharedSurfaceEGL.h"
#include "GLBlitHelper.h"
#include "GLContextEGL.h"
#include "GLLibraryEGL.h"
#include "GLReadTexImageHelper.h"
#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor, etc
#include "SharedSurface.h"
#include "TextureGarbageBin.h"
namespace mozilla {
namespace gl {
/*static*/ UniquePtr<SharedSurface_EGLImage>
SharedSurface_EGLImage::Create(GLContext* prodGL,
const GLFormats& formats,
const gfx::IntSize& size,
bool hasAlpha,
EGLContext context)
{
GLLibraryEGL* egl = &sEGLLibrary;
MOZ_ASSERT(egl);
MOZ_ASSERT(context);
UniquePtr<SharedSurface_EGLImage> ret;
if (!HasExtensions(egl, prodGL)) {
return Move(ret);
}
MOZ_ALWAYS_TRUE(prodGL->MakeCurrent());
GLuint prodTex = CreateTextureForOffscreen(prodGL, formats, size);
if (!prodTex) {
return Move(ret);
}
EGLClientBuffer buffer = reinterpret_cast<EGLClientBuffer>(uintptr_t(prodTex));
EGLImage image = egl->fCreateImage(egl->Display(), context,
LOCAL_EGL_GL_TEXTURE_2D, buffer,
nullptr);
if (!image) {
prodGL->fDeleteTextures(1, &prodTex);
return Move(ret);
}
ret.reset( new SharedSurface_EGLImage(prodGL, egl, size, hasAlpha,
formats, prodTex, image) );
return Move(ret);
}
bool
SharedSurface_EGLImage::HasExtensions(GLLibraryEGL* egl, GLContext* gl)
{
return egl->HasKHRImageBase() &&
egl->IsExtensionSupported(GLLibraryEGL::KHR_gl_texture_2D_image) &&
(gl->IsExtensionSupported(GLContext::OES_EGL_image_external) ||
gl->IsExtensionSupported(GLContext::OES_EGL_image));
}
SharedSurface_EGLImage::SharedSurface_EGLImage(GLContext* gl,
GLLibraryEGL* egl,
const gfx::IntSize& size,
bool hasAlpha,
const GLFormats& formats,
GLuint prodTex,
EGLImage image)
: SharedSurface(SharedSurfaceType::EGLImageShare,
AttachmentType::GLTexture,
gl,
size,
hasAlpha,
false) // Can't recycle, as mSync changes never update TextureHost.
, mMutex("SharedSurface_EGLImage mutex")
, mEGL(egl)
, mFormats(formats)
, mProdTex(prodTex)
, mImage(image)
, mSync(0)
{}
SharedSurface_EGLImage::~SharedSurface_EGLImage()
{
mEGL->fDestroyImage(Display(), mImage);
if (mSync) {
// We can't call this unless we have the ext, but we will always have
// the ext if we have something to destroy.
mEGL->fDestroySync(Display(), mSync);
mSync = 0;
}
if (!mGL || !mGL->MakeCurrent())
return;
mGL->fDeleteTextures(1, &mProdTex);
mProdTex = 0;
}
layers::TextureFlags
SharedSurface_EGLImage::GetTextureFlags() const
{
return layers::TextureFlags::DEALLOCATE_CLIENT;
}
void
SharedSurface_EGLImage::ProducerReleaseImpl()
{
MutexAutoLock lock(mMutex);
mGL->MakeCurrent();
if (mEGL->IsExtensionSupported(GLLibraryEGL::KHR_fence_sync) &&
mGL->IsExtensionSupported(GLContext::OES_EGL_sync))
{
if (mSync) {
MOZ_RELEASE_ASSERT(false, "GFX: Non-recycleable should not Fence twice.");
MOZ_ALWAYS_TRUE( mEGL->fDestroySync(Display(), mSync) );
mSync = 0;
}
mSync = mEGL->fCreateSync(Display(),
LOCAL_EGL_SYNC_FENCE,
nullptr);
if (mSync) {
mGL->fFlush();
return;
}
}
MOZ_ASSERT(!mSync);
mGL->fFinish();
}
void
SharedSurface_EGLImage::ProducerReadAcquireImpl()
{
// Wait on the fence, because presumably we're going to want to read this surface
if (mSync) {
mEGL->fClientWaitSync(Display(), mSync, 0, LOCAL_EGL_FOREVER);
}
}
EGLDisplay
SharedSurface_EGLImage::Display() const
{
return mEGL->Display();
}
bool
SharedSurface_EGLImage::ToSurfaceDescriptor(layers::SurfaceDescriptor* const out_descriptor)
{
*out_descriptor = layers::EGLImageDescriptor((uintptr_t)mImage, (uintptr_t)mSync,
mSize, mHasAlpha);
return true;
}
bool
SharedSurface_EGLImage::ReadbackBySharedHandle(gfx::DataSourceSurface* out_surface)
{
MOZ_ASSERT(out_surface);
MOZ_ASSERT(NS_IsMainThread());
return sEGLLibrary.ReadbackEGLImage(mImage, out_surface);
}
////////////////////////////////////////////////////////////////////////
/*static*/ UniquePtr<SurfaceFactory_EGLImage>
SurfaceFactory_EGLImage::Create(GLContext* prodGL, const SurfaceCaps& caps,
const RefPtr<layers::LayersIPCChannel>& allocator,
const layers::TextureFlags& flags)
{
EGLContext context = GLContextEGL::Cast(prodGL)->mContext;
typedef SurfaceFactory_EGLImage ptrT;
UniquePtr<ptrT> ret;
GLLibraryEGL* egl = &sEGLLibrary;
if (SharedSurface_EGLImage::HasExtensions(egl, prodGL)) {
ret.reset( new ptrT(prodGL, caps, allocator, flags, context) );
}
return Move(ret);
}
} // namespace gl
} /* namespace mozilla */
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