www.pudn.com > promptshaderey.zip > cloud.fx

 
// Cloud rendering. 
// 
// Outputs color into RT0, normal/Z into RT1. 
// Clouds aren't affected by atmospheric scattering here, and are over-edge 
// diffuse shaded. 
// 
// Versions: vs1.1, ps2.0 
 
#include "_shared.fx" 
#include "_library.fx" 
 
 
// -------------------------------------------------------------------------- 
//  vertex shader 
 
struct VS_OUTPUT { 
	float4 pos		: POSITION; 
	float4 normalZ	: TEXCOORD0; 
	float4 color	: COLOR0; 
}; 
 
VS_OUTPUT vsMain ( 
	float4	pos : POSITION, 
	float3	normal : NORMAL ) 
{ 
    VS_OUTPUT o; 
	o.pos = mul( pos, mWVP ); 
	float3 n = mul( normal, (float3x3)mWorld ); 
	 
	// slightly over-edge directional light 
	float cosang = ( dot( n, vLightDir ) + 1.0 ) * 0.5; 
	o.color.xyz = cosang * vScatterSunColor * 0.5 + 0.5; 
	o.color.w = 1; 
 
	// normal/Z 
	o.normalZ = gNormalZ( o.pos, n ); 
 
	return o; 
} 
 
// -------------------------------------------------------------------------- 
//  pixel shader 
 
struct PS_INPUT { 
	float4 normalZ : TEXCOORD0; 
	float4 color : COLOR0; 
}; 
 
struct PS_OUTPUT { 
	half4 color : COLOR0; 
	half4 normalZ : COLOR1; 
}; 
 
PS_OUTPUT psMain( PS_INPUT i ) : COLOR 
{ 
	PS_OUTPUT o; 
	// color 
	o.color = i.color; 
 
	// normal/Z 
	o.normalZ = float4( i.normalZ.xyz, i.normalZ.w ); 
 
	return o; 
} 
 
 
// -------------------------------------------------------------------------- 
//  effect 
 
technique tec0 { 
	pass P0 { 
		VertexShader = compile vs_1_1 vsMain(); 
		PixelShader = compile ps_2_0 psMain(); 
	} 
	pass PLast { 
	} 
} 
technique tecDummy { 
	pass P0 { 
	} 
}