indexbuffer 不能渲染出东西的问题?谁遇到过?

roczhao

//indexbuffer 不能渲染出东西,总是一块兰屏(初始)
CUSTOMVERTEX g_Vertices3[] = {
// X Y Z U V
{-200.0f,-200.0f,-200.0f, D3DCOLOR_ARGB(0,0,255,0)}, // 0
{-200.0f, 200.0f,-200.0f, D3DCOLOR_ARGB(0,0,255,0)}, // 1
{200.0f, 200.0f,-200.0f, D3DCOLOR_ARGB(0,0,255,0)}, // 2
{200.0f,-200.0f,-200.0f, D3DCOLOR_ARGB(0,0,255,0)}, // 3

};
WORD IndexData3[ ] =
{
0,1,2,3
};

void IndexBufferRender(void)
{
// Check to make sure you have a valid Direct3D device
if( NULL == pd3dDevice )
return;// Clear the back buffer to a blue color
pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET,
D3DCOLOR_XRGB( 0,0,255 ), 1.0f, 0 );

// Create the vertex buffer
HRESULT hr;

//CREATE VERTEXT BUFFER
LPDIRECT3DVERTEXBUFFER9 vertexBuffer;

hr = pd3dDevice->CreateVertexBuffer(sizeof(g_Vertices3) * sizeof(CUSTOMVERTEX),
0,
D3DFVF_XYZ|D3DFVF_DIFFUSE,
D3DPOOL_DEFAULT,
&vertexBuffer,
NULL );

VOID* pVertices;

hr = vertexBuffer->Lock(0,sizeof(g_Vertices3)*sizeof(CUSTOMVERTEX),(void**) &pVertices,0);

if FAILED (hr) hr=0;

memcpy ( pVertices, g_Vertices3, sizeof(g_Vertices3)*sizeof(CUSTOMVERTEX) );

vertexBuffer->Unlock();

// Create the index buffer
LPDIRECT3DINDEXBUFFER9 iBuffer;
hr = pd3dDevice->CreateIndexBuffer(sizeof(IndexData3)*sizeof(WORD),D3DUSAGE_WRITEONLY,D3DFMT_INDEX32,
D3DPOOL_DEFAULT,
&iBuffer,
NULL );

VOID* IndexPtr;

hr = iBuffer->Lock(0,sizeof(IndexData3),(void**) &IndexPtr,0);

memcpy ( IndexPtr, IndexData3, sizeof(IndexData3)*sizeof(WORD) );

iBuffer->Unlock();

pd3dDevice->BeginScene();

pd3dDevice->SetFVF(D3DFVF_XYZ|D3DFVF_DIFFUSE );
pd3dDevice->SetStreamSource( 0, vertexBuffer, 0, sizeof(CUSTOMVERTEX) );
pd3dDevice->SetIndices(iBuffer);
hr=pd3dDevice->DrawIndexedPrimitive(D3DPT_TRIANGLESTRIP,
0, // BaseVertexIndex
0, // MinIndex
4, // NumVertices
0, // StartIndex
2 ); // primitive count

pd3dDevice->EndScene();

pd3dDevice-&gtresent( NULL, NULL, NULL, NULL );
} [em7] [em7]

nlo

首先你vertex的alpha值是0, 那就不???出?淼牧? 而且你?]有?置world matrix, 那???polygon就正正在view matrix那?, 一定是看不到的.

dkxw

D3DFMT_INDEX32,你的显示卡支持?
如果我原来碰到过这个...