www.pudn.com > promptshaderey.zip > imgRemap3D.fx

 
// Generic image space color remapper. 
// 
// Remaps colors via dependant read into volume texture. 
// Does point sampling on volume texture for this demo purposes :) 
 
#include "_shared.fx" 
 
texture		tBase; 
texture		tRemap; 
 
// -------------------------------------------------------------------------- 
//  samplers  
 
sampler smpBase = sampler_state { 
    Texture   = (tBase); 
    MipFilter = None; MinFilter = Point; MagFilter = Point; 
    AddressU = Clamp; AddressV = Clamp; 
}; 
sampler smpRemap = sampler_state { 
    Texture   = (tRemap); 
    MipFilter = None; MinFilter = Point; MagFilter = Point; 
    AddressU = Clamp; AddressV = Clamp; AddressW = Clamp; 
}; 
 
 
// -------------------------------------------------------------------------- 
//  vertex shader 
 
struct VS_OUTPUT { 
	float4 pos	: POSITION; 
	float2 uv	: TEXCOORD0; 
}; 
 
VS_OUTPUT vsMain ( 
	float4	pos : POSITION, 
	float2  uv : TEXCOORD0 ) 
{ 
    VS_OUTPUT o; 
	// fullscreen quad 
	o.pos = pos * float4(-2,2,1,1) - vQuadOffset; 
	o.uv = uv; 
	return o; 
} 
 
 
// -------------------------------------------------------------------------- 
//  pixel shader 
 
struct PS_INPUT { 
	float2 uv : TEXCOORD0; 
}; 
 
float4 psMain( PS_INPUT i ) : COLOR 
{ 
	float4 color = tex2D( smpBase, i.uv ); 
	float4 remap = tex3D( smpRemap, color.xyz ); 
	return remap; 
} 
 
// -------------------------------------------------------------------------- 
//  effect 
 
technique tec0 
{ 
	pass P0 { 
		VertexShader = compile vs_1_1 vsMain(); 
		//Fvf = Xyz | Normal | Tex1; 
		PixelShader = compile ps_1_4 psMain(); 
 
		ZEnable = False; 
		ZWriteEnable = False; 
 
		//CullMode = None; 
	} 
	pass PLast { 
		ZEnable = True; 
		ZWriteEnable = True; 
	} 
}