??????????

???? · 发表于 2011-6-7 11:13:00

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

Aming · 发表于 2011-6-7 12:19:00

?????AlphaBlend? ?????Alpha
Rt=Rs*A+Rd(1-A)
Gt=Gs*A+Gd(1-A)
Bt=Bs*A+Bd(1-A)

???? · 发表于 2011-6-7 13:17:00

Aming: Re:??????????

?????AlphaBlend? ?????Alpha
Rt=Rs*A+Rd(1-A)
Gt=Gs*A+Gd(1-A)
Bt=Bs*A+Bd(1-A)

???????????DX9?

instemast · 发表于 2011-6-8 20:45:00

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

???????????DX9?

?????????????
??????? SetRenderState ?? SetTextureStageState
??????????alpha?????????alpha blend????color blend?

m_pd3dDevice->SetTextureStageState(0,D3DTSS_COLORARG1, D3DTA_TEXTURE);
m_pd3dDevice->SetTextureStageState(0,D3DTSS_COLOROP, D3DTOP_SELECTARG1);
// ?????????????????????????????????

m_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCCOLOR); // ?????D3DBLEND_ONE????????
m_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCCOLOR);

???? · 发表于 2011-6-8 22:39:00

instemast: Re: Re: Re:??????????

?????????????
??????? SetRenderState ?? SetTextureStageState
??????...

??????????????
????????????????????????????,??????????.
???????????????.?
?????:

instemast · 发表于 2011-6-9 01:08:00

?????????????????alpha????????????????
????????alpha???????

m_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_ONE);
m_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCCOLOR);

================================================================================

??????????????????????alpha???????

????????????? src * alpha + dest ??alpha??????

m_pd3dDevice->SetRenderState(D3DRS_DIFFUSEMATERIALSOURCE, D3DMCS_COLOR1);

m_pd3dDevice->SetTextureStageState(0,D3DTSS_COLORARG1, D3DTA_DIFFUSE);
m_pd3dDevice->SetTextureStageState(0,D3DTSS_COLORARG2, D3DTA_TEXTURE);
m_pd3dDevice->SetTextureStageState(0,D3DTSS_COLOROP, D3DTOP_MODULATE);

m_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_ONE);
m_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_ONE);

???? · 发表于 2011-6-9 09:09:00

instemast: Re:??????????

?????????????????alpha????????????????
????????alp...

??D3DBLEND_ONE????????????????D3DBLEND_ONE???????????????????????????????????????????????????????????????????????
????0xffff00ff????????????

??alpha???????????????alpha??????????????????????????????????????????

PS?
??????????????????????????
?????????????????????????????????????????????????????????????????????shader???????????????????????

instemast · 发表于 2011-6-9 16:01:00

??alpha???????????????alpha??????????????????????????????????????????

??????alpha?????????????alpha??????
?????????????????alpha???lock??????????

m_pd3dDevice->SetTextureStageState(0,D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
m_pd3dDevice->SetTextureStageState(0,D3DTSS_ALPHAOP, D3DTOP_SELECTARG1);

m_pd3dDevice->SetRenderState(D3DRS_DIFFUSEMATERIALSOURCE, D3DMCS_COLOR1);
m_pd3dDevice->SetTextureStageState(0,D3DTSS_COLORARG1, D3DTA_DIFFUSE);
m_pd3dDevice->SetTextureStageState(0,D3DTSS_COLOROP, D3DTOP_SELECTARG1);

m_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCCOLOR);
m_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCCOLOR);

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

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

?????????????????
??????? src * alpha + dest ??alpha?????

m_pd3dDevice->SetRenderState(D3DRS_DIFFUSEMATERIALSOURCE, D3DMCS_COLOR1);
m_pd3dDevice->SetTextureStageState(0,D3DTSS_COLORARG1, D3DTA_DIFFUSE);
m_pd3dDevice->SetTextureStageState(0,D3DTSS_COLORARG2, D3DTA_TEXTURE);
m_pd3dDevice->SetTextureStageState(0,D3DTSS_COLOROP, D3DTOP_MODULATE);

m_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_ONE);
m_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_ONE);

* ?????????????????2?texture stage??????D3DTA_DIFFUSE????????????

???? · 发表于 2011-6-9 18:16:00

instemast: Re:??????????

??alpha???????????????alpha???????????????????????????...

????????????????????alpha??????????

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