????????????????

hmhm

??????zwrite?ztest,?????,?????zwrite?????????

???????,??????,PC????,????PSP????????

flipcode

?????z?
?????????
??????alphatest
????????????

Aming

????: Re: Re:????????????????



z-buffer ???3d???????????????????????????????3d?????????
????2D?

3D World?? 2D??????3D?????..Z?????? ???z-buff?????

?????alpha blend???D?? ????? ?????


1.????????AlphaBlend? ??????????
   ?????? ????????
   ??????????????..?????? ??????????

2.???AlphaBlend ????????
      ??????  

flyue

???????????????????
??????????????????VERTEX BUFFER?????????????

????DRAW PRIMITIVE???????????

??????????????????

???????VB??????????????????????????�

flyue

????????????????????

pspspsps

????: Re: Re:????????????????



z-buffer ???3d???????????????????????????????3d?????????
????2D?

??????????2d??z-buffer,???????3d.???????2d.

???????2d???2d???????w??,????????????,?????????.

???

?XYZTHW????? 3D???????????????????????,????????,????????3D???,??Z????,????????????Z?,???????????????,????Z??,??????????????,???????????.?????????UI????,???????????UI,?????shader,???shader????????,?????.???????alpha?????????????,?????????UI.

????

???: Re:????????????????

?XYZTHW????? 3D???????????????????????,????????,????????...

??????Z??????????Z?????????z???

1. 
   
2. struct SVertex2D
   
3. {
   
4.         float x, y, z, rhw;                // ??
   
5.         unsigned long color;        // ??
   
6.         float tu, tv;                        // ????
   
7. };
   

复制代码

Z???????????????1???Z???2???????Z?? [em24]

ChenA

???alpha blend????premultiplied alpha???????????

http://home.comcast.net/~tom_forsyth/blog.wiki.html#[[Premultiplied%20alpha]]

ChenA

???alpha blend????premultiplied alpha???????????

http://home.comcast.net/~tom_forsyth/blog.wiki.html#[[Premultiplied%20alpha]]