新学D3D，调函数画个茶壶，似乎有点问题

[BORLANDSUN]

用D3DXCreateTeapot()画个茶壶，之后做旋转时发现，即使茶壶盖转到下面，依然能透过茶壶身子看到它，
d3ddp.EnableAutoDepthStencil = TRUE;
d3ddp.AutoDepthStencilFormat = D3DFMT_D16;
g_pd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_CW);
g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, TRUE);
这几句都加了，依然不起作用。（不加时连壶嘴转到背面都能看到，加后壶嘴看不到，壶盖依然可见）。
求解。另：OpenGL画茶壶没有出现这种情况。

[asong200]

有意思，但是偶没有搞过。关注。

[SuleMate]

透明度问题么？现在做软件~~~很长时间没搞D3D 记不住了
设置颜色的时候第4个参数就是透明度吧

[BORLANDSUN]

不是透明度，因为其它部分的确是遮挡了，但唯有壶盖子能看到。代码很简单，我帖出来。编译时需要DX9 SDK的支持，搞过的同志们肯定知道。

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"

#include "mmsystem.h"
#include "d3dx9.h"          				// 修改：在Project->Options->C++ Compiler->Path and Defines中的Defines中添加“sqrtf=sqrt”
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
LPDIRECT3D9 g_pD3D = NULL;
LPDIRECT3DDEVICE9 g_pd3dDevice = NULL;
LPD3DXMESH g_teapot = NULL;

void InitGeometry(void);
void SetupMatrics(float XAngle);
void SetupLight(void);
void Render(void);

int gAngle;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
	: TForm(Owner)
{
// 初始化D3D9环境
	g_pD3D = Direct3DCreate9(D3D_SDK_VERSION);
	D3DPRESENT_PARAMETERS d3ddp;
	ZeroMemory(&d3ddp, sizeof(D3DPRESENT_PARAMETERS));
	d3ddp.Windowed = TRUE;
	d3ddp.SwapEffect = D3DSWAPEFFECT_DISCARD;
	//d3ddp.BackBufferFormat = D3DFMT_UNKNOWN;
	d3ddp.EnableAutoDepthStencil = TRUE;
	d3ddp.AutoDepthStencilFormat = D3DFMT_D16;

	g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, this->Handle, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3ddp, &g_pd3dDevice);

	//g_pd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_CW);
	g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, TRUE);
	//g_pd3dDevice->SetRenderState(D3DRS_FILLMODE, D3DFILL_WIREFRAME);
	//g_pd3dDevice->SetRenderState(D3DRS_MULTISAMPLEANTIALIAS, TRUE);


	
	InitGeometry();

	SetupLight();
	gAngle = 0;
}
//---------------------------------------------------------------------------

void InitGeometry(void)
{
	D3DXCreateTeapot(g_pd3dDevice, &g_teapot, NULL);
	//D3DXCreateBox(g_pd3dDevice, 2, 2, 2, &g_teapot, NULL);
	//D3DXCreateSphere(g_pd3dDevice, 1, 20, 20, &g_teapot, NULL);
	//D3DXCreateTorus(g_pd3dDevice, 0.5f, 1.2f, 50, 50, &g_teapot, NULL);
}
//---------------------------------------------------------------------------

void SetupMatrics(float Angle)
{
// 世界矩阵
	D3DXMATRIXA16 matWorld;
	D3DXMatrixRotationX(&matWorld, Angle);
	//D3DXMatrixRotationY(&matWorld, Angle);
	//D3DXMatrixRotationZ(&matWorld, Angle);
	g_pd3dDevice->SetTransform(D3DTS_WORLD, &matWorld);

// 观察矩阵
	D3DXVECTOR3 vEyePt(0.0, 3.0, -5.0);

	D3DXVECTOR3 vLookatPt(0.0, 0.0, 0.0);
	D3DXVECTOR3 vUpVec(0.0, 1.0, 0.0);
	D3DXMATRIXA16 matView;
	D3DXMatrixLookAtLH(&matView, &vEyePt, &vLookatPt, &vUpVec);
	g_pd3dDevice->SetTransform(D3DTS_VIEW, &matView);

// 透视投影矩阵
	D3DXMATRIXA16 matProj;
	D3DXMatrixPerspectiveFovLH(&matProj, D3DX_PI/4.0, 1.0, 0.0, 100.0);
	//D3DXMatrixOrthoLH(&matProj, 10, 10, -100, 100);
	g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &matProj);

// 视区
	D3DVIEWPORT9 vp;
	vp.X = 0;
	vp.Y = 0;
	vp.Width = Form1->Width;
	vp.Height = Form1->Height;
	vp.MinZ = 0;
	vp.MaxZ = 1;
	g_pd3dDevice->SetViewport(&vp);
}
//---------------------------------------------------------------------------

void SetupLight(void)
{
// 设置材质
   	D3DMATERIAL9 mtrl;
	ZeroMemory(&mtrl, sizeof(D3DMATERIAL9));
	mtrl.Diffuse.r = 1.0f;
	mtrl.Diffuse.g = 0.8f;
	mtrl.Diffuse.b = 0.7f;
	mtrl.Diffuse.a = 1.0f;
	mtrl.Ambient.r = 0.0f;
	mtrl.Ambient.g = 0.8f;
	mtrl.Ambient.b = 0.7f;
	mtrl.Ambient.a = 1.0f;/**/
	g_pd3dDevice->SetMaterial(&mtrl);

// 设置光源
	D3DXVECTOR3 vecDir;
	D3DLIGHT9 light;
	ZeroMemory(&light, sizeof(D3DLIGHT9));
	light.Type = D3DLIGHT_DIRECTIONAL;

	light.Diffuse.r  = 1.0f;
	light.Diffuse.g  = 1.0f;
	light.Diffuse.b  = 1.0f;
	vecDir = D3DXVECTOR3(1, 1, 1);
	D3DXVec3Normalize((D3DXVECTOR3*)&light.Direction, &vecDir);
	light.Range = 1000.0f;
	HRESULT hr = g_pd3dDevice->SetLight(0, &light);
	g_pd3dDevice->LightEnable(0, TRUE);
	g_pd3dDevice->SetRenderState(D3DRS_LIGHTING, TRUE);/**/

	D3DXVECTOR3 vecPos2;
	D3DLIGHT9 light2;
	ZeroMemory(&light2, sizeof(D3DLIGHT9));
	light2.Type = D3DLIGHT_POINT;
	light2.Diffuse.r = 0.9f;
	light2.Diffuse.g = 0.0f;
	light2.Diffuse.b = 0.0f;
	light2.Position = D3DXVECTOR3(3, 2, 1);
	light2.Range = 100.0f;
	light2.Attenuation0 = 1.0f;
	//g_pd3dDevice->SetLight(1, &light2);
	//g_pd3dDevice->LightEnable(1, TRUE);
	//g_pd3dDevice->SetRenderState(D3DRS_LIGHTING, TRUE);

// 设置环境光
	//g_pd3dDevice->SetRenderState(D3DRS_AMBIENT, 0x00202020);
}
//---------------------------------------------------------------------------

void Render(void)
{
	g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(128, 128, 128), 1.0, 0);
	g_pd3dDevice->BeginScene();


	gAngle++;
	SetupMatrics(gAngle*D3DX_PI/180.0);

	g_teapot->DrawSubset(0);

	g_pd3dDevice->EndScene();
	g_pd3dDevice->Present(NULL, NULL, NULL, NULL);
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
	Render();
	Caption = gAngle;
}
//---------------------------------------------------------------------------

void __fastcall TForm1::FormClose(TObject *Sender, TCloseAction &Action)
{
	g_teapot->Release();
	g_pd3dDevice->Release();
	g_pD3D->Release();
}
//---------------------------------------------------------------------------

[SuleMate]

d3ddp.BackBufferFormat = D3DFMT_UNKNOWN;
d3ddp.EnableAutoDepthStencil = TRUE;
d3ddp.AutoDepthStencilFormat = D3DFMT_D16;
这里有问题

void Render(void)
{
g_teapot->DrawSubset(0);
}
子集画4次

晚上空了帮你看看

[努力的我]

.....老大忘了开深度测试了吧