HiSi3536的TDE模块怎么玩啊？HI_TDE2_Bitblit怎么玩啊？

1. HI_TDE2_Bitblit做两个图形的Alpha叠加怎么做？
两个图形都是ARGB888

2. Alpha叠加模式
enAluCmd = TDE2_ALUCMD_BLEND;
stBlendOpt.eBlendCmd有多种叠加Command
比如；TDE2_BLENDCMD_NONE为 fs取sa，fd取1.0-sa
前景和背景都是ARGB8888，sa到底是什么？怎么设上去的啊？难道是ARGB8888的alpha值？

3. HI_TDE2_Bitblit的colorkey可以用？
我怎么感觉不能用啊？
我想把前景中0x000033这个颜色过滤掉，怎么设啊？

[code]stOpt.unColorKeyValue.struCkARGB.stRed.u8CompMin = 0x00;
stOpt.unColorKeyValue.struCkARGB.stRed.u8CompMax = 0x00;
stOpt.unColorKeyValue.struCkARGB.stRed.bCompOut = HI_FALSE;
stOpt.unColorKeyValue.struCkARGB.stRed.bCompIgnore = HI_FALSE;
stOpt.unColorKeyValue.struCkARGB.stGreen.u8CompMin = 0x00;
stOpt.unColorKeyValue.struCkARGB.stGreen.u8CompMax = 0x00;
stOpt.unColorKeyValue.struCkARGB.stGreen.bCompOut = HI_FALSE;
stOpt.unColorKeyValue.struCkARGB.stGreen.bCompIgnore = HI_FALSE;
stOpt.unColorKeyValue.struCkARGB.stBlue.u8CompMin = 0x33;
stOpt.unColorKeyValue.struCkARGB.stBlue.u8CompMax = 0x33;
stOpt.unColorKeyValue.struCkARGB.stBlue.bCompOut = HI_FALSE;
stOpt.unColorKeyValue.struCkARGB.stBlue.bCompIgnore = HI_FALSE;
stOpt.unColorKeyValue.struCkARGB.stAlpha.bCompIgnore = HI_TRUE;[/code]

我这样用的，就是没用啊！！！

跪求大神！！！跪求大神！！！