зеркало из https://github.com/mozilla/gecko-dev.git
121 строка
4.1 KiB
C++
121 строка
4.1 KiB
C++
/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "SharedSurfaceGLX.h"
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#include "gfxXlibSurface.h"
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#include "GLXLibrary.h"
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#include "GLContextProvider.h"
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#include "GLContextGLX.h"
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#include "GLScreenBuffer.h"
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#include "mozilla/gfx/SourceSurfaceCairo.h"
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#include "mozilla/layers/LayersSurfaces.h"
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#include "mozilla/layers/ShadowLayerUtilsX11.h"
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#include "mozilla/layers/ISurfaceAllocator.h"
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#include "mozilla/layers/TextureForwarder.h"
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#include "mozilla/X11Util.h"
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namespace mozilla::gl {
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/* static */
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UniquePtr<SharedSurface_GLXDrawable> SharedSurface_GLXDrawable::Create(
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GLContext* prodGL, const SurfaceCaps& caps, const gfx::IntSize& size,
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bool deallocateClient, bool inSameProcess) {
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UniquePtr<SharedSurface_GLXDrawable> ret;
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Display* display = DefaultXDisplay();
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Screen* screen = XDefaultScreenOfDisplay(display);
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Visual* visual =
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gfxXlibSurface::FindVisual(screen, gfx::SurfaceFormat::A8R8G8B8_UINT32);
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RefPtr<gfxXlibSurface> surf = gfxXlibSurface::Create(screen, visual, size);
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if (!deallocateClient) surf->ReleasePixmap();
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ret.reset(new SharedSurface_GLXDrawable(prodGL, size, inSameProcess, surf));
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return ret;
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}
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SharedSurface_GLXDrawable::SharedSurface_GLXDrawable(
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GLContext* gl, const gfx::IntSize& size, bool inSameProcess,
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const RefPtr<gfxXlibSurface>& xlibSurface)
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: SharedSurface(SharedSurfaceType::GLXDrawable, AttachmentType::Screen, gl,
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size, true, true),
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mXlibSurface(xlibSurface),
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mInSameProcess(inSameProcess) {}
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void SharedSurface_GLXDrawable::ProducerReleaseImpl() {
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mGL->MakeCurrent();
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mGL->fFlush();
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}
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void SharedSurface_GLXDrawable::LockProdImpl() {
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GLContextGLX::Cast(mGL)->OverrideDrawable(mXlibSurface->GetGLXPixmap());
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}
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void SharedSurface_GLXDrawable::UnlockProdImpl() {
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GLContextGLX::Cast(mGL)->RestoreDrawable();
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}
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bool SharedSurface_GLXDrawable::ToSurfaceDescriptor(
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layers::SurfaceDescriptor* const out_descriptor) {
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if (!mXlibSurface) return false;
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*out_descriptor = layers::SurfaceDescriptorX11(mXlibSurface, mInSameProcess);
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return true;
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}
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bool SharedSurface_GLXDrawable::ReadbackBySharedHandle(
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gfx::DataSourceSurface* out_surface) {
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MOZ_ASSERT(out_surface);
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RefPtr<gfx::DataSourceSurface> dataSurf =
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new gfx::DataSourceSurfaceCairo(mXlibSurface->CairoSurface());
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gfx::DataSourceSurface::ScopedMap mapSrc(dataSurf,
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gfx::DataSourceSurface::READ);
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if (!mapSrc.IsMapped()) {
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return false;
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}
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gfx::DataSourceSurface::ScopedMap mapDest(out_surface,
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gfx::DataSourceSurface::WRITE);
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if (!mapDest.IsMapped()) {
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return false;
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}
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if (mapDest.GetStride() == mapSrc.GetStride()) {
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memcpy(mapDest.GetData(), mapSrc.GetData(),
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out_surface->GetSize().height * mapDest.GetStride());
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} else {
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for (int32_t i = 0; i < dataSurf->GetSize().height; i++) {
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memcpy(mapDest.GetData() + i * mapDest.GetStride(),
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mapSrc.GetData() + i * mapSrc.GetStride(),
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std::min(mapSrc.GetStride(), mapDest.GetStride()));
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}
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}
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return true;
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}
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/* static */
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UniquePtr<SurfaceFactory_GLXDrawable> SurfaceFactory_GLXDrawable::Create(
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GLContext* prodGL, const SurfaceCaps& caps,
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const RefPtr<layers::LayersIPCChannel>& allocator,
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const layers::TextureFlags& flags) {
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MOZ_ASSERT(caps.alpha, "GLX surfaces require an alpha channel!");
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typedef SurfaceFactory_GLXDrawable ptrT;
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UniquePtr<ptrT> ret(
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new ptrT(prodGL, caps, allocator,
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flags & ~layers::TextureFlags::ORIGIN_BOTTOM_LEFT));
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return ret;
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}
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UniquePtr<SharedSurface> SurfaceFactory_GLXDrawable::CreateShared(
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const gfx::IntSize& size) {
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bool deallocateClient = !!(mFlags & layers::TextureFlags::DEALLOCATE_CLIENT);
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return SharedSurface_GLXDrawable::Create(mGL, mCaps, size, deallocateClient,
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mAllocator->IsSameProcess());
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}
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} // namespace mozilla::gl
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