h/q/d: Optimize framebuffer layer update
While doing mixed mode composition, update only the region of the
framebuffer where layer contents are cached or updated. Avoids
MDP fetch for non-visible contents of FB.
Change-Id: I20997d79e02a6bac60d7333c28c6dde134263197
diff --git a/libhwcomposer/hwc_fbupdate.h b/libhwcomposer/hwc_fbupdate.h
index da4cdfc..c8347fa 100644
--- a/libhwcomposer/hwc_fbupdate.h
+++ b/libhwcomposer/hwc_fbupdate.h
@@ -39,7 +39,7 @@
virtual ~IFBUpdate() {};
// Sets up members and prepares overlay if conditions are met
virtual bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list,
- int fbZorder) = 0;
+ hwc_rect_t fbUpdatingRect, int fbZorder) = 0;
virtual bool prepareAndValidate(hwc_context_t *ctx,
hwc_display_contents_1 *list, int fbZorder);
// Draws layer
@@ -64,12 +64,12 @@
explicit FBUpdateNonSplit(hwc_context_t *ctx, const int& dpy);
virtual ~FBUpdateNonSplit() {};
bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list,
- int fbZorder);
+ hwc_rect_t fbUpdatingRect, int fbZorder);
bool draw(hwc_context_t *ctx, private_handle_t *hnd);
void reset();
private:
bool configure(hwc_context_t *ctx, hwc_display_contents_1 *list,
- int fbZorder);
+ hwc_rect_t fbUpdatingRect, int fbZorder);
bool preRotateExtDisplay(hwc_context_t *ctx,
hwc_layer_1_t *layer,
ovutils::Whf &info,
@@ -85,12 +85,12 @@
explicit FBUpdateSplit(hwc_context_t *ctx, const int& dpy);
virtual ~FBUpdateSplit() {};
bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list,
- int fbZorder);
+ hwc_rect_t fbUpdatingRect, int fbZorder);
bool draw(hwc_context_t *ctx, private_handle_t *hnd);
void reset();
private:
bool configure(hwc_context_t *ctx, hwc_display_contents_1 *list,
- int fbZorder);
+ hwc_rect_t fbUpdatingRect, int fbZorder);
ovutils::eDest mDestLeft; //left pipe to draw on
ovutils::eDest mDestRight; //right pipe to draw on
};