Hi, i just started to look into vertex buffers and i thought that i good way of understanding them would to put a floor under a mesh i''m displaying. However i''m having problems. whenever i run my program the screen goes nuts and keeps switching coloring every frame. i figure it''s something stupid but i can''t see what. any help anyone can give is appreciated. this is the code that i use to initialize the VB. NVertex plane[6]; //normaled vertex x,y,z nx,ny,nz ZeroMemory(plane,sizeof(NVertex)*6); plane[0].x = 100; plane[0].z = 100; plane[1].x = 100; plane[1].z = -100; plane[2].x = -100; plane[2].z = -100; plane[3].x = -100; plane[3].z = -100; plane[4].x = 100; plane[4].z = 100; plane[5].x = -100; plane[5].z = 100; for(int i = 0; i <6; i++) { plane.y = 0; plane.nx = 0; plane.ny = 1; plane.nz = 0; } hr = pDevice->CreateVertexBuffer(6*sizeof(NVertex),0,NVertexFormat,D3DPOOL_DEFAULT,&pVB); //succeeds if(FAILED(hr)) { DEBUG_MSG("CreateVertexBuffer",hr); } LPBYTE pData = NULL; hr = pVB->Lock(0,0,&pData,0 ); //succeeds if(FAILED(hr)) { DEBUG_MSG("Lock",hr); } memcpy(pData,plane,sizeof(NVertex)*6); hr = pVB->Unlock(); //succeeds ——————————– and this is the code i use to display it ——————————– D3DXMATRIX matWorld; D3DXMatrixIdentity(&matWorld); pDevice->SetTransform(D3DTS_WORLD,&matWorld); pDevice->SetRenderState( D3DRS_FILLMODE, D3DFILL_WIREFRAME ); EnableLighting(FALSE); pDevice->SetVertexShader(D3DFVF_XYZ); pDevice->SetStreamSource(0,pVB,sizeof(NVertex)*6); pDevice->DrawPrimitive(D3DPT_TRIANGLELIST,0,2); </i>

thxs.

ok. i switched the vertexes and did the SetVertexShader. however now it''s complaining with an error in the debug output

"Stream 0 stride should match the stride, implied by the current vertex shader"

i''ve been working strictly with meshes so far, so i''m not really sure what this error means.

Change;
pDevice->SetStreamSource(0,pVB,sizeof(NVertex)*6);

to
pDevice->SetStreamSource(0,pVB,sizeof(NVertex));

Cheers

Matt



Main site | Free source | Email

thxs. that did it.

i appreciate all the help.