2层贴图问题

thinbug

在d3d中给一个矩形贴图
pDevice->SetTexture( 0, m_pTexture );
pDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_MODULATE );
pDevice->SetTextureStageState( 1, D3DTSS_COLOROP, D3DTOP_MODULATE );
pDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
pDevice->SetStreamSource( 0, m_pVB, 0, sizeof(CUSTOMVERTEX) );
pDevice->DrawPrimitive( D3DPT_TRIANGLEFAN, 0, 2 );

贴第2层图要怎么弄啊

windsprite

容易，像使第一层一样用.
struct YOURVERTEX
{
    FLOAT x, y, z;       
    FLOAT tu,tv;  //第一层uv坐标
    FLOAT tu2,tv2;  // 这里加上第二层uv坐标.
};

m_pD3DDevice->SetTexture(0, m_pTexture1);//SetTexture第一层
m_pD3DDevice->SetTexture(1, m_pTexture2);//SetTexture第二层               

thinbug

哦，明白了，谢谢。

thinbug

还是没贴上第2张！
SetTextureStageState要怎么设置？

thinbug

还是只能看到第1张图！！！是这个SetTexturestagestate的问题吗？sdk真的看不懂，哪里有多层纹理的例子？？？


pDevice->SetTexture( 0, m_pTexture );
pDevice->SetTexture( 1, m_pTexture2 );
pDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
pDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_MODULATE );
pDevice->SetTextureStageState( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE );
pDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
pDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_SELECTARG1 );


pDevice->SetTextureStageState( 1, D3DTSS_COLORARG1, D3DTA_TEXTURE );
pDevice->SetTextureStageState( 1, D3DTSS_COLOROP, D3DTOP_ADD);//MODULATE2X );
pDevice->SetTextureStageState( 1, D3DTSS_COLORARG2, D3DTA_CURRENT );

pDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
pDevice->SetStreamSource( 0, m_pVB, 0, sizeof(CUSTOMVERTEX) );
pDevice->DrawPrimitive( D3DPT_TRIANGLEFAN, 0, 2 );

thinbug

哦，终于解决了
这里我定义错了，：），应该是D3DFVF_TEX2
//D3DFVF_TEX1表示只使用一层纹理
#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_TEX2)