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Add support for begin frame scheduling and direct rendering when GPU compositing is disabled (issue #1368).

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- Always set the browser process VSync rate (frame rate) to CefSettings.windowless_frame_rate.
- When the `enable-begin-frame-scheduling` command-line flag is specified the VSync rate for all processes will be synchronized to CefSettings.windowless_frame_rate. This flag cannot be used in combination with windowed rendering.
- When the `disable-gpu` and `disable-gpu-compositing` command-line flags are specified the CefRenderHandler::OnPaint method will be called directly from the compositor instead of requiring an additional copy for each frame.
- CefRenderHandler::OnPopupSize now passes view coordinates instead of (potentially scaled) pixel coordinates.
- Add OSR unit tests for 2x (HiDPI) pixel scaling.
- Improve CefRenderHandler documentation.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1960 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
This commit is contained in:
Marshall Greenblatt
2015-01-01 16:51:56 +00:00
parent 3aec2e1a72
commit d0a45cfbbb
12 changed files with 1016 additions and 457 deletions
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16
include/cef_render_handler.h
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@ -105,18 +105,21 @@ class CefRenderHandler : public virtual CefBase {
///
// Called when the browser wants to move or resize the popup widget. |rect|
// contains the new location and size.
// contains the new location and size in view coordinates.
///
/*--cef()--*/
virtual void OnPopupSize(CefRefPtr<CefBrowser> browser,
const CefRect& rect) {}
///
// Called when an element should be painted. |type| indicates whether the
// element is the view or the popup widget. |buffer| contains the pixel data
// for the whole image. |dirtyRects| contains the set of rectangles that need
// to be repainted. |buffer| will be |width|*|height|*4 bytes in size and
// represents a BGRA image with an upper-left origin.
// Called when an element should be painted. Pixel values passed to this
// method are scaled relative to view coordinates based on the value of
// CefScreenInfo.device_scale_factor returned from GetScreenInfo. |type|
// indicates whether the element is the view or the popup widget. |buffer|
// contains the pixel data for the whole image. |dirtyRects| contains the set
// of rectangles in pixel coordinates that need to be repainted. |buffer| will
// be |width|*|height|*4 bytes in size and represents a BGRA image with an
// upper-left origin.
///
/*--cef()--*/
virtual void OnPaint(CefRefPtr<CefBrowser> browser,
@ -138,6 +141,7 @@ class CefRenderHandler : public virtual CefBase {
///
// Called when the user starts dragging content in the web view. Contextual
// information about the dragged content is supplied by |drag_data|.
// (|x|, |y|) is the drag start location in screen coordinates.
// OS APIs that run a system message loop may be used within the
// StartDragging call.
//