Question

我想在运行时在纹理上交换纹理（包含精灵表）。但是，我有问题了解什么是光栅化器，我不知道应该传递什么样的矩阵。

class CUSTOMVERTEXBEN
{
public:
    FLOAT x, y, z, rhw; // The transformed position for the vertex
    DWORD color;        // The vertex color
`enter code here`FLOAT tu, tv;
};

#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZRHW|D3DFVF_DIFFUSE|D3DFVF_TEX1)
D3DXMATRIX m_mtxTexture;
D3DXMatrixIdentity(&m_mtxTexture);

m_mtxTexture._41= 1.0f;
m_mtxTexture._42= 1.0f;


g_pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof( CUSTOMVERTEX ) );
g_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
g_pd3dDevice->SetIndices(g_pIB);

m_mtxTexture._11= 0.f;
m_mtxTexture._12= 0.f;
//m_mtxTexture._33= 1.f;
g_pd3dDevice->SetTexture(0, g_pTexture );  
g_pd3dDevice->SetTextureStageState(0, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);
g_pd3dDevice->SetTransform(D3DTS_TEXTURE0, &m_mtxTexture);

g_pd3dDevice->DrawIndexedPrimitive( D3DPT_TRIANGLELIST, 0, 0, 4, 0, 2);

Answer 1

如果您正在使用精灵表，则需要将UV坐标从一个精灵转换为另一个精灵。您可以使用UV变换执行此操作。您可以为当前设置的任何纹理设置变换（通常是纹理索引0）。有关详细信息，请参阅here。

Directx 9.0纹理映射渲染

1 个答案: