关于PointSprite的使用

helong2005325

为啥我在DirectX8中总是用不了PointSprite功能?代码如下：
        D3DDevice.SetRenderState D3DRS_POINTSPRITE_ENABLE, True
        D3DDevice.SetRenderState D3DRS_POINTSCALE_ENABLE, True
        D3DDevice.SetRenderState D3DRS_POINTSIZE, 0.01
        D3DDevice.SetRenderState D3DRS_POINTSIZE_MIN, 0
        D3DDevice.SetRenderState D3DRS_POINTSCALE_A, 1
        D3DDevice.SetRenderState D3DRS_POINTSCALE_B, 1
        D3DDevice.SetRenderState D3DRS_POINTSCALE_C, 1
问题出在哪里？谢谢指教? [em24]

redyeyerabbit

D3DDevice.SetRenderState D3DRS_POINTSIZE, 0.01
改为D3DDevice->SetRenderState(D3DRS_POINTSIZE, F2DW(0.01))