1 files changed, 116 insertions, 0 deletions
diff --git a/gfx/layers/basic/X11BasicCompositor.cpp b/gfx/layers/basic/X11BasicCompositor.cpp
new file mode 100644
index 0000000000..d9cf164571
--- /dev/null
+++ b/gfx/layers/basic/X11BasicCompositor.cpp
@@ -0,0 +1,116 @@
+/* -*- 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 "X11BasicCompositor.h"
+#include "gfxPlatform.h"
+#include "gfx2DGlue.h"
+#include "gfxXlibSurface.h"
+#include "gfxImageSurface.h"
+#include "mozilla/X11Util.h"
+
+namespace mozilla {
+using namespace mozilla::gfx;
+
+namespace layers {
+
+bool X11DataTextureSourceBasic::Update(gfx::DataSourceSurface* aSurface,
+                                       nsIntRegion* aDestRegion,
+                                       gfx::IntPoint* aSrcOffset) {
+  // Reallocate our internal X11 surface if we don't have a DrawTarget yet,
+  // or if we changed surface size or format since last update.
+  if (!mBufferDrawTarget ||
+      (aSurface->GetSize() != mBufferDrawTarget->GetSize()) ||
+      (aSurface->GetFormat() != mBufferDrawTarget->GetFormat())) {
+    RefPtr<gfxASurface> surf;
+    gfxImageFormat imageFormat =
+        SurfaceFormatToImageFormat(aSurface->GetFormat());
+    Display* display = DefaultXDisplay();
+    Screen* screen = DefaultScreenOfDisplay(display);
+    XRenderPictFormat* xrenderFormat =
+        gfxXlibSurface::FindRenderFormat(display, imageFormat);
+
+    if (xrenderFormat) {
+      surf = gfxXlibSurface::Create(screen, xrenderFormat, aSurface->GetSize());
+    }
+
+    if (!surf) {
+      NS_WARNING("Couldn't create native surface, fallback to image surface");
+      surf = new gfxImageSurface(aSurface->GetSize(), imageFormat);
+    }
+
+    mBufferDrawTarget =
+        gfxPlatform::CreateDrawTargetForSurface(surf, aSurface->GetSize());
+  }
+
+  // Image contents have changed, upload to our DrawTarget
+  // If aDestRegion is null, means we're updating the whole surface
+  // Note : Incremental update with a source offset is only used on Mac.
+  NS_ASSERTION(!aSrcOffset,
+               "SrcOffset should not be used with linux OMTC basic");
+
+  if (aDestRegion) {
+    for (auto iter = aDestRegion->RectIter(); !iter.Done(); iter.Next()) {
+      const IntRect& rect = iter.Get();
+      IntRect srcRect(rect.X(), rect.Y(), rect.Width(), rect.Height());
+      IntPoint dstPoint(rect.X(), rect.Y());
+
+      // We're uploading regions to our buffer, so let's just copy contents over
+      mBufferDrawTarget->CopySurface(aSurface, srcRect, dstPoint);
+    }
+  } else {
+    // We're uploading the whole buffer, so let's just copy the full surface
+    IntSize size = aSurface->GetSize();
+    mBufferDrawTarget->CopySurface(
+        aSurface, IntRect(0, 0, size.width, size.height), IntPoint(0, 0));
+  }
+
+  return true;
+}
+
+TextureSourceBasic* X11DataTextureSourceBasic::AsSourceBasic() { return this; }
+
+IntSize X11DataTextureSourceBasic::GetSize() const {
+  if (!mBufferDrawTarget) {
+    NS_WARNING("Trying to query the size of an uninitialized TextureSource");
+    return IntSize(0, 0);
+  }
+  return mBufferDrawTarget->GetSize();
+}
+
+gfx::SurfaceFormat X11DataTextureSourceBasic::GetFormat() const {
+  if (!mBufferDrawTarget) {
+    NS_WARNING("Trying to query the format of an uninitialized TextureSource");
+    return gfx::SurfaceFormat::UNKNOWN;
+  }
+  return mBufferDrawTarget->GetFormat();
+}
+
+SourceSurface* X11DataTextureSourceBasic::GetSurface(DrawTarget* aTarget) {
+  RefPtr<gfx::SourceSurface> surface;
+  if (mBufferDrawTarget) {
+    surface = mBufferDrawTarget->Snapshot();
+    return surface.get();
+  }
+  return nullptr;
+}
+
+void X11DataTextureSourceBasic::DeallocateDeviceData() {
+  mBufferDrawTarget = nullptr;
+}
+
+already_AddRefed<DataTextureSource> X11BasicCompositor::CreateDataTextureSource(
+    TextureFlags aFlags) {
+  RefPtr<DataTextureSource> result = new X11DataTextureSourceBasic();
+  return result.forget();
+}
+
+void X11BasicCompositor::EndFrame() {
+  BasicCompositor::EndFrame();
+  XFlush(DefaultXDisplay());
+}
+
+}  // namespace layers
+}  // namespace mozilla