www.pudn.com > packmk2.rar > skybox.fx

// oi oi 
 
float4x4	mViewProj; 
float4x4	mInvViewProj; 
float4x4	mInvView; 
float4		view_position; 
float		sun_alfa, sun_theta, sun_shininess, sun_strength; 
float zfar = 4000; 
 
struct VS_INPUT 
{ 
    float3  Pos      : POSITION; 
    float4  displacement : COLOR0; 
}; 
 
struct VS_OUTPUT 
{ 
    float4  Pos     : POSITION; 
	float3	v	: TEXCOORD1; 
	float3  sun	: TEXCOORD2; 
}; 
 
texture EnvironmentMap; 
 
samplerCUBE skySRGB = sampler_state 
{   
    Texture = ;  
    MipFilter = LINEAR;  
    MinFilter = LINEAR;  
    MagFilter = LINEAR;  
	AddressU  = CLAMP;		 
    AddressV  = CLAMP; 
    AddressW  = CLAMP; 
    SRGBTexture = true; 
}; 
 
samplerCUBE sky = sampler_state 
{   
    Texture = ;  
    MipFilter = LINEAR;  
    MinFilter = LINEAR;  
    MagFilter = LINEAR;  
	AddressU  = CLAMP;		 
    AddressV  = CLAMP; 
    AddressW  = CLAMP; 
}; 
 
VS_OUTPUT VShader(VS_INPUT i) 
{ 
    VS_OUTPUT   o; 
     
     
	o.Pos = mul(float4(zfar*i.Pos,1), mViewProj); 
	 
	/*float4	direction	= float4(i.Pos.xy,1,1); 
	 
	direction =  mul(direction , mInvViewProj);	*/ 
	 
	//o.v = direction.xyz/direction.w - view_position.xyz/view_position.w; 
	o.v = i.Pos; 
     
	o.sun.x = cos(sun_theta)*sin(sun_alfa); 
	o.sun.y = sin(sun_theta); 
	o.sun.z = cos(sun_theta)*cos(sun_alfa); 
 
	return o; 
} 
 
float4 PShader(VS_OUTPUT i) : COLOR 
{ 
    float3 sunlight = sun_strength*pow(saturate(dot(normalize(i.v), i.sun)),sun_shininess)*float3(1.2, 0.4, 0.1); 
	 
	float4 ut; 
	ut.a = 1; 
	ut.rgb = pow(texCUBE(skySRGB,i.v) + sunlight, 1/2.2); 
	//if(i.v.y < 0) ut.rgb = float3(0.090,0.244,0.23); 
	//ut.rgb = 0.5+0.5*i.v; 
	return ut; 
} 
 
float4 PShader1_1(VS_OUTPUT i) : COLOR 
{	 
	float4 ut; 
	ut.a = 1; 
	ut.rgb = texCUBE(sky,i.v); 
	return ut; 
} 
 
technique T0 
{ 
    pass P0 
    {         
        pixelshader = compile ps_2_0 PShader(); 
		vertexshader = compile vs_1_1 VShader();  
    } 
} 
 
technique T1 
{ 
    pass P0 
    {         
        pixelshader = compile ps_1_1 PShader1_1(); 
		vertexshader = compile vs_1_1 VShader();  
    } 
}