I have a slight problem when it gets to rendering my heightmap. I think it´s something wrong with the index buffer since drawindexedprimitive fails. Here´s the code for initializing vertexbuffer and indexbuffer.
CUSTOMVERTEX vertices[128*128];
for(int i = 0; i<128; ++i)
{
for(int j = 0; j<128; ++j)
{
vertices[TERRAIN_Z*i+j].x = (float)j;
vertices[TERRAIN_Z*i+j].y = 0.0f;//iHeightMapArray[i*TERRAIN_Z+j];
vertices[TERRAIN_Z*i+j].z = (float)i;
vertices[TERRAIN_Z*i+j].d3dColor = D3DCOLOR_XRGB(0,255,0);
}
}
if(FAILED(p_iD3DDevice9->CreateVertexBuffer((128*128)*sizeof(CUSTOMVERTEX),
0, CUSTOMVERTEX_FVF, D3DPOOL_DEFAULT,&p_iD3DVertexBuffer9,NULL)))
{
MessageBox(NULL, "Can´t create vertexbuffer","Error", MB_OK);
return false;
}
VOID* pVertices;
if( FAILED(p_iD3DVertexBuffer9->Lock( 0, sizeof(vertices), (void**)&pVertices, 0 ) ) )
return false;
memcpy( pVertices, vertices, sizeof(vertices) );
p_iD3DVertexBuffer9->Unlock();
//Now set up the index buffer
long dIndices[127*127*6];
long dPos = 0;
for(int y = 0;y < 127;++y)
{
dPos = 0;
for(int x = 0;x < 127;++x)
{
dIndices[TERRAIN_Z*y+dPos] = x + y * (TERRAIN_X + 1);
dPos++; //Go next
dIndices[TERRAIN_Z*y+dPos]= x + 1 + y * (TERRAIN_X + 1); //v2
dPos++; //Go next
dIndices[TERRAIN_Z*y+dPos] = x + 1 + (y + 1) * (TERRAIN_X + 1); //v4
dPos++; //Go next
dIndices[TERRAIN_Z*y+dPos] = x + y * (TERRAIN_X + 1); //v1
dPos++; //Go next
dIndices[TERRAIN_Z*y+dPos] = x + 1 + (y + 1) * (TERRAIN_X + 1); //v4
dPos++; //Go next
dIndices[TERRAIN_Z*y+dPos] = x + (y + 1) * (TERRAIN_X + 1); //v3
dPos++;
}
}
if(FAILED(p_iD3DDevice9->CreateIndexBuffer((127*127*6)*sizeof(long),0,D3DFMT_INDEX16,D3DPOOL_MANAGED,
&p_iD3DIndexBuffer9,NULL)))
{
MessageBox(NULL,"Failed to create index buffer", "Error", MB_OK);
return false;
}
VOID *p_vData;
if(FAILED(p_iD3DIndexBuffer9->Lock(0,sizeof(dIndices),(VOID**)&p_vData,0)))
{
MessageBox(NULL,"Failed to lock index buffer", "Error", MB_OK);
return false;
}
memcpy(p_vData,dIndices,sizeof(dIndices)); //copy data
p_iD3DIndexBuffer9->Unlock();
return true;
And this is the code I use to present the scene.
p_iD3DDevice9->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(0,0,255),1.0f,0);
p_iD3DDevice9->BeginScene();
SetupMatrices(); //Setup camera
// Set the location source of our vertex input stream
p_iD3DDevice9->SetStreamSource( 0, p_iD3DVertexBuffer9,0, sizeof(CUSTOMVERTEX));
// Set the location of our index information to our Index Buffer
if(FAILED(p_iD3DDevice9->SetIndices( p_iD3DIndexBuffer9 )))
{
MessageBox(NULL,"Couldn´t set indices", "Error", MB_OK);
return false;
}
if(FAILED(p_iD3DDevice9->DrawIndexedPrimitive(D3DPT_TRIANGLELIST,
0,
0,
127*127*2*3,
0,
127*127*2)))
{
MessageBox(NULL,"Failed to draw indexed primitive", "Error", MB_OK);
return false;
}
p_iD3DDevice9->EndScene();
RECT rRect;
rRect.left = 0;
rRect.top = 0;
rRect.right = 480;
rRect.bottom = 480;
//Render only from and to the given rect
p_iD3DDevice9->Present(&rRect,&rRect,NULL,NULL);
return true;
Have tried all sorts of things but there´s prolly something wrong in my thinking then
Any help REALLY appreciated.
