Simplify the depth transformation in the scene graph.

Use default depth function GL_LESS and depth clear value 1, and
set the near and far clipping planes to -1 and 1. This change
will make the transformations a bit easier for people who
implement custom 3D geometry since [-1, 1] is the typical z-range
after a projection transformation. The change has no visual impact
on 2D geometry.

Change-Id: I75d4a8acc15131ffaa5d13a749e42dffbc1d09db
Reviewed-by: Glenn Watson <glenn.watson@nokia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/quick/scenegraph/coreapi/qsgrenderer.cpp b/src/quick/scenegraph/coreapi/qsgrenderer.cpp
index 92b99b8662..0049ae706a 100644
--- a/src/quick/scenegraph/coreapi/qsgrenderer.cpp
+++ b/src/quick/scenegraph/coreapi/qsgrenderer.cpp
@@ -313,7 +313,7 @@ void QSGRenderer::setProjectionMatrixToRect(const QRectF &rect)
                  rect.x() + rect.width(),
                  rect.y() + rect.height(),
                  rect.y(),
-                 qreal(0.01),
+                 1,
                  -1);
     setProjectionMatrix(matrix);
 }