Implement QSGRenderNode for the rhi path

The documentation is also refined and extended.

Revise the rendernode example as well: make it possible to
test and demonstrate both scissor and stencil based clipping.

An implementation of the triangle for another graphics API
should follow in a separate patch at a later point. For now
only OpenGL is supported in combination with the RHI.

Change-Id: I7ef9f6c6e0b44f1bdf44c9266ea3fa4736367a5d
Reviewed-by: Christian Strømme <christian.stromme@qt.io>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/quick/scenegraph/coreapi/qsgbatchrenderer_p.h b/src/quick/scenegraph/coreapi/qsgbatchrenderer_p.h
index ea9dab244f..4e374522d4 100644
--- a/src/quick/scenegraph/coreapi/qsgbatchrenderer_p.h
+++ b/src/quick/scenegraph/coreapi/qsgbatchrenderer_p.h
@@ -817,6 +817,8 @@ private:
     void enqueueStencilDraw(const Batch *batch);
     const QMatrix4x4 &matrixForRoot(Node *node);
     void renderRenderNode(Batch *batch);
+    bool prepareRhiRenderNode(Batch *batch, PreparedRenderBatch *renderBatch);
+    void renderRhiRenderNode(const Batch *batch);
     void setActiveShader(QSGMaterialShader *program, ShaderManager::Shader *shader);
     void setActiveRhiShader(QSGMaterialRhiShader *program, ShaderManager::Shader *shader);