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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 "SharedSurfaceGLX.h"
#include "gfxXlibSurface.h"
#include "GLXLibrary.h"
#include "GLContextProvider.h"
#include "GLContextGLX.h"
#include "GLScreenBuffer.h"
#include "mozilla/gfx/SourceSurfaceCairo.h"
#include "mozilla/layers/LayersSurfaces.h"
#include "mozilla/layers/ShadowLayerUtilsX11.h"
#include "mozilla/layers/ISurfaceAllocator.h"
#include "mozilla/layers/TextureForwarder.h"
#include "mozilla/X11Util.h"
namespace mozilla {
namespace gl {
/* static */
UniquePtr<SharedSurface_GLXDrawable>
SharedSurface_GLXDrawable::Create(GLContext* prodGL,
const SurfaceCaps& caps,
const gfx::IntSize& size,
bool deallocateClient,
bool inSameProcess)
{
UniquePtr<SharedSurface_GLXDrawable> ret;
Display* display = DefaultXDisplay();
Screen* screen = XDefaultScreenOfDisplay(display);
Visual* visual = gfxXlibSurface::FindVisual(screen, gfx::SurfaceFormat::A8R8G8B8_UINT32);
RefPtr<gfxXlibSurface> surf = gfxXlibSurface::Create(screen, visual, size);
if (!deallocateClient)
surf->ReleasePixmap();
ret.reset(new SharedSurface_GLXDrawable(prodGL, size, inSameProcess, surf));
return Move(ret);
}
SharedSurface_GLXDrawable::SharedSurface_GLXDrawable(GLContext* gl,
const gfx::IntSize& size,
bool inSameProcess,
const RefPtr<gfxXlibSurface>& xlibSurface)
: SharedSurface(SharedSurfaceType::GLXDrawable,
AttachmentType::Screen,
gl,
size,
true,
true)
, mXlibSurface(xlibSurface)
, mInSameProcess(inSameProcess)
{}
void
SharedSurface_GLXDrawable::ProducerReleaseImpl()
{
mGL->MakeCurrent();
mGL->fFlush();
}
void
SharedSurface_GLXDrawable::LockProdImpl()
{
mGL->Screen()->SetReadBuffer(LOCAL_GL_FRONT);
GLContextGLX::Cast(mGL)->OverrideDrawable(mXlibSurface->GetGLXPixmap());
}
void
SharedSurface_GLXDrawable::UnlockProdImpl()
{
GLContextGLX::Cast(mGL)->RestoreDrawable();
}
bool
SharedSurface_GLXDrawable::ToSurfaceDescriptor(layers::SurfaceDescriptor* const out_descriptor)
{
if (!mXlibSurface)
return false;
*out_descriptor = layers::SurfaceDescriptorX11(mXlibSurface, mInSameProcess);
return true;
}
bool
SharedSurface_GLXDrawable::ReadbackBySharedHandle(gfx::DataSourceSurface* out_surface)
{
MOZ_ASSERT(out_surface);
RefPtr<gfx::DataSourceSurface> dataSurf =
new gfx::DataSourceSurfaceCairo(mXlibSurface->CairoSurface());
gfx::DataSourceSurface::ScopedMap mapSrc(dataSurf, gfx::DataSourceSurface::READ);
if (!mapSrc.IsMapped()) {
return false;
}
gfx::DataSourceSurface::ScopedMap mapDest(out_surface, gfx::DataSourceSurface::WRITE);
if (!mapDest.IsMapped()) {
return false;
}
if (mapDest.GetStride() == mapSrc.GetStride()) {
memcpy(mapDest.GetData(),
mapSrc.GetData(),
out_surface->GetSize().height * mapDest.GetStride());
} else {
for (int32_t i = 0; i < dataSurf->GetSize().height; i++) {
memcpy(mapDest.GetData() + i * mapDest.GetStride(),
mapSrc.GetData() + i * mapSrc.GetStride(),
std::min(mapSrc.GetStride(), mapDest.GetStride()));
}
}
return true;
}
/* static */
UniquePtr<SurfaceFactory_GLXDrawable>
SurfaceFactory_GLXDrawable::Create(GLContext* prodGL,
const SurfaceCaps& caps,
const RefPtr<layers::LayersIPCChannel>& allocator,
const layers::TextureFlags& flags)
{
MOZ_ASSERT(caps.alpha, "GLX surfaces require an alpha channel!");
typedef SurfaceFactory_GLXDrawable ptrT;
UniquePtr<ptrT> ret(new ptrT(prodGL, caps, allocator,
flags & ~layers::TextureFlags::ORIGIN_BOTTOM_LEFT));
return Move(ret);
}
UniquePtr<SharedSurface>
SurfaceFactory_GLXDrawable::CreateShared(const gfx::IntSize& size)
{
bool deallocateClient = !!(mFlags & layers::TextureFlags::DEALLOCATE_CLIENT);
return SharedSurface_GLXDrawable::Create(mGL, mCaps, size, deallocateClient,
mAllocator->IsSameProcess());
}
} // namespace gl
} // namespace mozilla
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