Mac: Add partial swap support to NSOpenGLContext path
Add a damage rect parameter to the structure
GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params.
Because that structure and its IPC are Mac-only, wrap them
in ifdefs.
Add code in the IOSurface draw function to clear out the
difference between the IOSurface and its viewport.
BUG=496484
Review URL: https://codereview.chromium.org/1161853006
Cr-Commit-Position: refs/heads/master@{#333231}
diff --git a/ui/accelerated_widget_mac/io_surface_texture.h b/ui/accelerated_widget_mac/io_surface_texture.h
index 473e69cb..2cdd235 100644
--- a/ui/accelerated_widget_mac/io_surface_texture.h
+++ b/ui/accelerated_widget_mac/io_surface_texture.h
@@ -40,7 +40,6 @@
class IOSurfaceTexture
: public base::RefCounted<IOSurfaceTexture> {
public:
- // Returns NULL if IOSurfaceTexture or GL API calls fail.
static scoped_refptr<IOSurfaceTexture> Create(
bool needs_gl_finish_workaround);
@@ -54,6 +53,7 @@
// larger than the IOSurface, the remaining right and bottom edges will be
// white. |window_scale_factor| is 1 in normal views, 2 in HiDPI views.
bool DrawIOSurface() WARN_UNUSED_RESULT;
+ bool DrawIOSurfaceWithDamageRect(gfx::Rect damage_rect) WARN_UNUSED_RESULT;
// Returns true if the offscreen context used by this surface has been
// poisoned.
@@ -67,6 +67,10 @@
bool needs_gl_finish_workaround);
~IOSurfaceTexture();
+ // Draw the sepecified rect of the IOSurface. If |draw_boundary| is true,
+ // clear any overflow regions with white.
+ bool DrawIOSurfaceInternal(gfx::Rect damage_rect, bool draw_boundary);
+
// Unref the IOSurfaceTexture and delete the associated GL texture. If the GPU
// process is no longer referencing it, this will delete the IOSurface.
void ReleaseIOSurfaceAndTexture();
