hwc: Implement mixed mode composition.
With this change we are moving MDP composition from all-or-nothing
implementation to mixed mode implementation where layers can
partially be composited through MDP and while rest of the layers are
composed / cached in framebuffer.
- Mixed mode design is based on layer caching
- Mixed mode path is configured only when non-bypassing
layers are cached.
- Never allow mixed mode when FB needs to be udpated.
- If we cannot bypass all MDP comp marked layers, bail
out completely.
Change-Id: Ie08f39db07e032b537f042d0d2bfe772ebfed049
diff --git a/libhwcomposer/hwc_fbupdate.h b/libhwcomposer/hwc_fbupdate.h
index ddd24d7..4291a50 100644
--- a/libhwcomposer/hwc_fbupdate.h
+++ b/libhwcomposer/hwc_fbupdate.h
@@ -34,17 +34,15 @@
explicit IFBUpdate(const int& dpy) : mDpy(dpy) {}
virtual ~IFBUpdate() {};
// Sets up members and prepares overlay if conditions are met
- virtual bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list) = 0;
+ virtual bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list,
+ int fbZorder) = 0;
// Draws layer
virtual bool draw(hwc_context_t *ctx, private_handle_t *hnd) = 0;
//Reset values
virtual void reset();
//Factory method that returns a low-res or high-res version
static IFBUpdate *getObject(const int& width, const int& dpy);
- //To know if configuring FbUpdate is needed.
- static bool needFbUpdate(hwc_context_t *ctx,
- const hwc_display_contents_1_t *list,
- int dpy);
+
protected:
const int mDpy; // display to update
bool mModeOn; // if prepare happened
@@ -55,12 +53,13 @@
public:
explicit FBUpdateLowRes(const int& dpy);
virtual ~FBUpdateLowRes() {};
- bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list);
-
+ bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list,
+ 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);
+ bool configure(hwc_context_t *ctx, hwc_display_contents_1 *list,
+ int fbZorder);
ovutils::eDest mDest; //pipe to draw on
};
@@ -69,11 +68,13 @@
public:
explicit FBUpdateHighRes(const int& dpy);
virtual ~FBUpdateHighRes() {};
- bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list);
+ bool prepare(hwc_context_t *ctx, hwc_display_contents_1 *list,
+ 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);
+ bool configure(hwc_context_t *ctx, hwc_display_contents_1 *list,
+ int fbZorder);
ovutils::eDest mDestLeft; //left pipe to draw on
ovutils::eDest mDestRight; //right pipe to draw on
};