DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (409f3966645a)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327
/* -*- 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 "GLContextProvider.h"
#include "GLLibraryEGL.h"
#include "GLReadTexImageHelper.h"
#include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor, etc
#include "SharedSurface.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)
{
    auto* egl = gl::GLLibraryEGL::Get();
    MOZ_ASSERT(egl);
    MOZ_ASSERT(context);

    UniquePtr<SharedSurface_EGLImage> ret;

    if (!HasExtensions(egl, prodGL)) {
        return ret;
    }

    MOZ_ALWAYS_TRUE(prodGL->MakeCurrent());
    GLuint prodTex = CreateTextureForOffscreen(prodGL, formats, size);
    if (!prodTex) {
        return 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 ret;
    }

    ret.reset( new SharedSurface_EGLImage(prodGL, egl, size, hasAlpha,
                                          formats, prodTex, image) );
    return 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;
}

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());
    auto* egl = gl::GLLibraryEGL::Get();
    return egl->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;

    auto* egl = gl::GLLibraryEGL::Get();
    if (SharedSurface_EGLImage::HasExtensions(egl, prodGL)) {
        ret.reset( new ptrT(prodGL, caps, allocator, flags, context) );
    }

    return ret;
}

////////////////////////////////////////////////////////////////////////

#ifdef MOZ_WIDGET_ANDROID

/*static*/ UniquePtr<SharedSurface_SurfaceTexture>
SharedSurface_SurfaceTexture::Create(GLContext* prodGL,
                                     const GLFormats& formats,
                                     const gfx::IntSize& size,
                                     bool hasAlpha,
                                     java::GeckoSurface::Param surface)
{
    MOZ_ASSERT(surface);

    UniquePtr<SharedSurface_SurfaceTexture> ret;

    AndroidNativeWindow window(surface);
    GLContextEGL* egl = GLContextEGL::Cast(prodGL);
    MOZ_ASSERT(egl);
    EGLSurface eglSurface = egl->CreateCompatibleSurface(window.NativeWindow());
    if (!eglSurface) {
        return ret;
    }

    ret.reset(new SharedSurface_SurfaceTexture(prodGL, size, hasAlpha,
                                               formats, surface, eglSurface));
    return ret;
}

SharedSurface_SurfaceTexture::SharedSurface_SurfaceTexture(GLContext* gl,
                                                           const gfx::IntSize& size,
                                                           bool hasAlpha,
                                                           const GLFormats& formats,
                                                           java::GeckoSurface::Param surface,
                                                           EGLSurface eglSurface)
    : SharedSurface(SharedSurfaceType::AndroidSurfaceTexture,
                    AttachmentType::Screen,
                    gl,
                    size,
                    hasAlpha,
                    true)
    , mSurface(surface)
    , mEglSurface(eglSurface)
{
}

SharedSurface_SurfaceTexture::~SharedSurface_SurfaceTexture()
{
    GLContextProviderEGL::DestroyEGLSurface(mEglSurface);
    java::SurfaceAllocator::DisposeSurface(mSurface);
}

void
SharedSurface_SurfaceTexture::LockProdImpl()
{
    MOZ_RELEASE_ASSERT(mSurface->GetAvailable());

    GLContextEGL *gl = GLContextEGL::Cast(mGL);
    mOrigEglSurface = gl->GetEGLSurfaceOverride();
    gl->SetEGLSurfaceOverride(mEglSurface);
}

void
SharedSurface_SurfaceTexture::UnlockProdImpl()
{
    MOZ_RELEASE_ASSERT(mSurface->GetAvailable());

    GLContextEGL *gl = GLContextEGL::Cast(mGL);
    MOZ_ASSERT(gl->GetEGLSurfaceOverride() == mEglSurface);

    gl->SetEGLSurfaceOverride(mOrigEglSurface);
    mOrigEglSurface = nullptr;
}

void
SharedSurface_SurfaceTexture::Commit()
{
    MOZ_RELEASE_ASSERT(mSurface->GetAvailable());

    LockProdImpl();
    mGL->SwapBuffers();
    UnlockProdImpl();
    mSurface->SetAvailable(false);
}

void
SharedSurface_SurfaceTexture::WaitForBufferOwnership()
{
    mSurface->SetAvailable(true);
}

bool
SharedSurface_SurfaceTexture::IsBufferAvailable() const {
    return mSurface->GetAvailable();
}

bool
SharedSurface_SurfaceTexture::ToSurfaceDescriptor(layers::SurfaceDescriptor* const out_descriptor)
{
    *out_descriptor =
        layers::SurfaceTextureDescriptor(mSurface->GetHandle(),
                                         mSize,
                                         gfx::SurfaceFormat::R8G8B8A8,
                                         false /* NOT continuous */,
                                         false /* Do not ignore transform */);
    return true;
}

////////////////////////////////////////////////////////////////////////

/*static*/ UniquePtr<SurfaceFactory_SurfaceTexture>
SurfaceFactory_SurfaceTexture::Create(GLContext* prodGL, const SurfaceCaps& caps,
                                      const RefPtr<layers::LayersIPCChannel>& allocator,
                                      const layers::TextureFlags& flags)
{
    UniquePtr<SurfaceFactory_SurfaceTexture> ret(
        new SurfaceFactory_SurfaceTexture(prodGL, caps, allocator, flags));
    return ret;
}

UniquePtr<SharedSurface>
SurfaceFactory_SurfaceTexture::CreateShared(const gfx::IntSize& size)
{
    bool hasAlpha = mReadCaps.alpha;

    jni::Object::LocalRef surface = java::SurfaceAllocator::AcquireSurface(size.width, size.height, true);
    if (!surface) {
        // Try multi-buffer mode
        surface = java::SurfaceAllocator::AcquireSurface(size.width, size.height, false);
        if (!surface) {
            // Give up
            NS_WARNING("Failed to allocate SurfaceTexture!");
            return nullptr;
        }
    }

    return SharedSurface_SurfaceTexture::Create(mGL, mFormats, size, hasAlpha,
                                                java::GeckoSurface::Ref::From(surface));
}

#endif // MOZ_WIDGET_ANDROID

} // namespace gl

} /* namespace mozilla */