public void CreatePresentParameters()
{
//初始化设备参数
present_params = new PresentParameters();
#if FULL_SCREEN
//全屏
present_params.Windowed = false;
present_params.BackBufferCount = 2;
present_params.BackBufferWidth = 1024;
present_params.BackBufferHeight = 768;
present_params.BackBufferFormat = Format.X8R8G8B8;
present_params.SwapEffect = SwapEffect.Flip;
present_params.EnableAutoDepthStencil = true;
present_params.AutoDepthStencilFormat = DepthFormat.D24X8;
#else
//窗口
present_params.Windowed = true;
present_params.BackBufferWidth = ClientSize.Width;
present_params.BackBufferHeight = ClientSize.Height;
present_params.SwapEffect = SwapEffect.Flip;
present_params.BackBufferCount = 1;
present_params.EnableAutoDepthStencil = true;
present_params.AutoDepthStencilFormat = D3DConfiguration.GetAppropriateDepthFormat();
//谨慎开启全屏反锯齿FSAA:其性能冲击非常大
if (FSAA)
{
int quality;
MultiSampleType type;
D3DConfiguration.GetAppropriateMultiSampleType(out type, out quality);
if (type == MultiSampleType.NonMaskable)
{
present_params.SwapEffect = SwapEffect.Discard; //必须!
present_params.MultiSample = type; //开启全屏反锯齿FSAA
present_params.MultiSampleQuality = quality - 1; //容许的最高级别
}
}
#endif
}
//////////////////////////////////////////////////////////////////////////////////////////////////////
public bool InitializeGraphics()
{
//初始化设备参数
CreatePresentParameters();
Device.IsUsingEventHandlers = false; //关闭MDX的自动事件布线机制!
CreateFlags cf = D3DConfiguration.GetAppropriateCreateFlags();
device = new Device(0, DeviceType.Hardware, this, cf, present_params);
device.DeviceReset += new EventHandler(this.OnDeviceReset);
device.DeviceLost += new EventHandler(this.OnDeviceLost);
gdifont = new System.Drawing.Font("新宋体", 12); //GDI字体准备
axises = new CoordAxies(); //初始化坐标轴
SetupDevice(); //重建所有资源
camera = new Camera(am.radius * 5f); //镜头准备
return(true);
}
//////////////////////////////////////////////////////////////////////////////////////////////////////
public void Render()
{
//计算下一帧的模型
am.Animate(delta_time);
if (deviceLost)
{
AttemptRecovery();
}
if (deviceLost)
{
return;
}
device.RenderState.Lighting = false;
device.RenderState.CullMode = Cull.CounterClockwise; //右手系拣选
device.RenderState.SlopeScaleDepthBias = 2F;
device.SamplerState[0].MinFilter = D3DConfiguration.GetAppropriateTextureMinFilter(); //缩小滤波
device.SamplerState[0].MagFilter = D3DConfiguration.GetAppropriateTextureMagFilter(); //放大滤波
if (DisplayWireFrame == 1 || DisplayWireFrame == 2) //显示贴图线框或纯线框
{
device.RenderState.FillMode = FillMode.WireFrame;
}
else //显示贴图
{
device.RenderState.FillMode = FillMode.Solid;
}
if (DrawBackground)
{
device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, Color.Black, 1.0F, 0);
}
else
{
device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, Color.DarkGray, 1.0F, 0);
}
//关键：只要alpha值大于等于1的点才显示并更新zbuf！即，alpha=0的点直接不画，也不会影响zbuf!
//注意：盟2的abi里面没有透明色的概念，不知道盟3有没有
//device.RenderState.AlphaTestEnable = true;
//device.RenderState.AlphaFunction = Compare.GreaterEqual;
//device.RenderState.ReferenceAlpha = 1;
device.BeginScene();
{
SetupMatrices();
//---------------------------------------------------------------------------------------
device.VertexFormat = CustomVertex.PositionColoredTextured.Format;
device.SetStreamSource(0, am.vexbuf, 0);
for (int i = 0; i < am.texture.Length; i++)
{
if (DisplayWireFrame == 2) //纯线框
{
device.SetTexture(0, null);
}
else //贴图线框或者是贴图
{
device.SetTexture(0, am.texture[i]);
}
//注意：无需Alpha贴图功能，盟2的abi里面没有Alpha贴图的概念，不知道盟3有没有
//device.RenderState.SourceBlend = Blend.One;
//device.RenderState.DestinationBlend = Blend.Zero;
//device.RenderState.AlphaBlendEnable = false;
int count = (am.txtoffset[i + 1] - am.txtoffset[i]) / 3;
if (count != 0)
{
device.DrawPrimitives(PrimitiveType.TriangleList, am.txtoffset[i], count);
}
}
//---------------------------------------------------------------------------------------
if (DrawShadow) //从前向后绘制，Z深度优化
{
sm.Animation(); //计算下一帧的阴影
device.VertexFormat = CustomVertex.PositionColored.Format;
device.SetStreamSource(0, sm.shadowbuf, 0);
device.SetTexture(0, null);
device.DrawPrimitives(PrimitiveType.TriangleList, 0, sm.totalf);
}
//---------------------------------------------------------------------------------------
if (DrawCoordinateAxies)
{
axises.Render(device);
PrintAxiesComment();
}
//---------------------------------------------------------------------------------------
switch (DrawInformationText)
{
case 1:
PrintMessageOnScene();
break;
case 2:
PrintBoneHierarchyOnScene();
break;
}
}
device.EndScene();
try
{
device.Present();
}
catch (DeviceLostException)
{
deviceLost = true;
}
}