fix screen on/off animation (again)

- surfaceflinger now uses the GL-convention of
  placing the origin in the left-bottom corner

- map texture coordinates of the screen capture
  properly

- add the ability to control the animation
  speed through a debug property

Bug: 4989276

Change-Id: Ifb3297bb578078b47146fff666c01f85417e0d6f

1 files changed, 6 insertions, 1 deletions

diff --git a/services/surfaceflinger/LayerBase.cpp b/services/surfaceflinger/LayerBase.cpp
index bcd8c83..c86c659 100644
--- a/services/surfaceflinger/LayerBase.cpp
+++ b/services/surfaceflinger/LayerBase.cpp
@@ -228,13 +228,18 @@ void LayerBase::validateVisibility(const Transform& planeTransform)
     const Layer::State& s(drawingState());
     const Transform tr(planeTransform * s.transform);
     const bool transformed = tr.transformed();
-   
+    const DisplayHardware& hw(graphicPlane(0).displayHardware());
+    const uint32_t hw_h = hw.getHeight();
+
     uint32_t w = s.w;
     uint32_t h = s.h;    
     tr.transform(mVertices[0], 0, 0);
     tr.transform(mVertices[1], 0, h);
     tr.transform(mVertices[2], w, h);
     tr.transform(mVertices[3], w, 0);
+    for (size_t i=0 ; i<4 ; i++)
+        mVertices[i][1] = hw_h - mVertices[i][1];
+
     if (UNLIKELY(transformed)) {
         // NOTE: here we could also punt if we have too many rectangles
         // in the transparent region