纯手绘的MyGUI类图、渲染流程图

MyGUI (version 3.2 preview) class diagrams and render flow charts, sketched by liigo. 2011-12-16.

init:

IRenderTarget, RenderManager, Vertex, IVertexBuf, ITexture, DirectXRenderMananger:

BaseManager, LayerManager, ILayer, ILayNode, ILayerItem:

LayerManager tree:

2011-12-20 liigo 更新上图如下图，主要补充了Layer和LayerNode的渲染内容：

LayerManager tree, Layer.renderToTarget(), LayerNode.renderToTarget(): 

RenderItem, ISubWidget:

DirectXRenderManage.doRender(...) ISubWidget.createDrawItem(...):

MyGUI渲染流程总结：BaseManager.run() -> while(PeekMessage())... BaseManager.drawOneFrame() -> IDirect3DDevice9.BeginScene() -> RenderManager.drawOneFrame -> RenderManager.onFrameEvent(), begin()|SetRenderStates, onRenderToTarget() end() -> LayerManager.renderToTarget() -> ILayer.renderToTarget() -> ILayerNode.renderToTarget() -> RenderItem.renderToTarget() -> ISubWidget.doRender() to IVertexBuffer, DirectXRenderManager.doRender() -> IDirect3DDevice9.SetStreamSource() to IVertexBuffer-> IDirect3DDevice9.DrawPrimitive(D3DPT_TRIANGLELIST, ...) ... and last, IDirect3DDevice9.EndScene, IDirect3DDevice9.Present().

整个渲染流程的核心是 ISubWidget.doRender() 生成顶点数据（含坐标/颜色/纹理）到 IVertexBuffer，喂入 IDirect3DDevice9.DrawPrimitive() 。文/liigo

以上内容为草记，主要便于自己理解。目前理解的层次有限，暂不奢求对外人有多少帮助。

续：《纯手绘的MyGUI创建Widget流程图》