sky.fx

这也是一个游戏编程基础入门的事例！它是通过鼠标的移动改变照相机的仰角

struct VSOut
{
	float4 pos: POSITION0;
	float3 Tex: TEXCOORD0;
};


float4x4 g_WVP;
texture	 g_texEnv;


sampler EnvMap = sampler_state
{
	Texture = <g_texEnv>;
	MinFilter	= LINEAR;
	MagFilter	= LINEAR;
	MipFilter	= LINEAR;
	AddressU	= WRAP;
	AddressV	= WRAP;
};

VSOut VS(float3 posL: POSITION0)
{
	VSOut V = (VSOut) 0;
	V.pos = mul(float4(posL,1.0f),g_WVP).xyww;
	V.Tex = posL;
	return V;
}

float4 PS(float3 tex: TEXCOORD0):COLOR
{
	return texCUBE(EnvMap,tex);
}


technique Tech
{
	pass P0
	{
		vertexShader = compile vs_2_0 VS();
		pixelShader	 = compile ps_2_0 PS();
		
		//将背景设置为天空,并清空模板缓存和后台缓存
		CullMode		= None;
		ZFunc			= Always;
		StencilEnable	= true;
		StencilFunc		= Always;
		StencilPass		= Replace;
		StencilRef		= 0;  
	}
}