Make screen rotation work properly with the PowerVR screen driver

Task-number: QT-2261
Reviewed-by: Tom

4 files changed, 26 insertions, 2 deletions

diff --git a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c
index ac9dc8d..c1b655a 100644
--- a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c
+++ b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c
@@ -617,6 +617,16 @@ void pvrQwsGetGeometry(PvrQwsDrawable *drawable, PvrQwsRect *rect)
     *rect = drawable->rect;
 }
 
+void pvrQwsSetRotation(PvrQwsDrawable *drawable, int angle)
+{
+    if (drawable->rotationAngle != angle) {
+        drawable->rotationAngle = angle;
+
+        /* Force the buffers to be recreated if the rotation angle changes */
+        pvrQwsInvalidateBuffers(drawable);
+    }
+}
+
 int pvrQwsGetStride(PvrQwsDrawable *drawable)
 {
     if (drawable->backBuffersValid)
diff --git a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.h b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.h
index 952ff6f..b9e035f 100644
--- a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.h
+++ b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.h
@@ -126,6 +126,9 @@ void pvrQwsSetGeometry(PvrQwsDrawable *drawable, const PvrQwsRect *rect);
 /* Get the current geometry for a drawable */
 void pvrQwsGetGeometry(PvrQwsDrawable *drawable, PvrQwsRect *rect);
 
+/* Set the rotation angle in degrees */
+void pvrQwsSetRotation(PvrQwsDrawable *drawable, int angle);
+
 /* Get the line stride for a drawable.  Returns zero if the buffers
    are not allocated or have been invalidated */
 int pvrQwsGetStride(PvrQwsDrawable *drawable);
diff --git a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable_p.h b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable_p.h
index cf80a90..dcd4e4f 100644
--- a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable_p.h
+++ b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable_p.h
@@ -114,6 +114,7 @@ struct _PvrQwsDrawable
     int                 isFullScreen;
     int                 strideBytes;
     int                 stridePixels;
+    int                 rotationAngle;
     PvrQwsSwapFunction  swapFunction;
     void               *userData;
     PvrQwsDrawable     *nextWinId;
diff --git a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwswsegl.c b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwswsegl.c
index 253f39f..28b2251 100644
--- a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwswsegl.c
+++ b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwswsegl.c
@@ -132,6 +132,16 @@ static WSEGLError wseglCloseDisplay(WSEGLDisplayHandle display)
     return WSEGL_SUCCESS;
 }
 
+static WSEGLRotationAngle wseglRotationValue(int degrees)
+{
+    switch (degrees) {
+    case 90:  return WSEGL_ROTATE_90;
+    case 180: return WSEGL_ROTATE_180;
+    case 270: return WSEGL_ROTATE_270;
+    default:  return WSEGL_ROTATE_0;
+    }
+}
+
 /* Create the WSEGL drawable version of a native window */
 static WSEGLError wseglCreateWindowDrawable
     (WSEGLDisplayHandle display, WSEGLConfig *config,
@@ -152,7 +162,7 @@ static WSEGLError wseglCreateWindowDrawable
         *drawable = (WSEGLDrawableHandle)screen;
         if (!pvrQwsAllocBuffers(screen))
             return WSEGL_OUT_OF_MEMORY;
-        *rotationAngle = WSEGL_ROTATE_0;
+        *rotationAngle = wseglRotationValue(screen->rotationAngle);
         return WSEGL_SUCCESS;
     }
 
@@ -163,7 +173,7 @@ static WSEGLError wseglCreateWindowDrawable
 
     /* The drawable is ready to go */
     *drawable = (WSEGLDrawableHandle)draw;
-    *rotationAngle = WSEGL_ROTATE_0;
+    *rotationAngle = wseglRotationValue(draw->rotationAngle);
     if (!pvrQwsAllocBuffers(draw))
         return WSEGL_OUT_OF_MEMORY;
     return WSEGL_SUCCESS;