
#include "def_effect.fx"


//=============================================================================
//캐릭터 Specular 포함
VS_SPECULAR_OUTPUT Specular_VS( VS_INPUT In )
{
    VS_SPECULAR_OUTPUT Out = (VS_SPECULAR_OUTPUT)0; 
    
    float4 pos    = In.position;
    float3 normal = In.normal;
    float4 tex    = 0; 
    float4 output_pos, pos_world;

    pos_world = SkinPoint(  pos   , blendMatrices, In.indices, In.weights); // pos is changed.
    float3 N = SkinVector( normal, blendMatrices, In.indices, In.weights); // normal is changed.

    // transform position to screen space before changing it.
    output_pos = mul( pos_world, view_proj_matrix );
    Out.position = output_pos;

	//apply fog
	float distfog = saturate((fFogDistEnd - output_pos.z)/(fFogDistEnd - fFogDistStart));
	float heightfog = saturate((fFogHeightEnd - pos_world.z)/(fFogHeightEnd - fFogHeightStart));
	Out.fog = min(distfog, heightfog);


    float  nLength = length(Light_position - pos_world);
    float3 L = normalize(Light_position - pos_world);

	float Atten = 1/(1+(Light_ambient.a*nLength));

    // eye-base의 half-way 벡터
    float3 light_vector = -Light_direction_forsp;
    float3 eye_vector = Camera_position - pos_world;
    float3 halfway = normalize(normalize(light_vector) + normalize(eye_vector));

    float ddot = saturate(dot(N, L));
	float sdot = saturate(dot(N, halfway));

    Out.diffuse   = Light_ambient + max(Light_diffuse * ddot * Atten, Light_specular * pow(sdot, 7));     // specular + diffuse + ambient 
    Out.diffuse.a = fVisibility;

    tex      = fUVAnimation.w*In.texCoord + fUVAnimation;

	Out.specular     = Light_specular;
    Out.texCoord0    = tex;
    Out.texCoord1    = tex;
    Out.texCoord2.xy = saturate(dot(N, Light_halfway));
    Out.texCoord3    = tex;

    return Out;    
}


//=============================================================================
//본 캐릭터
VS_OUTPUT Default_VS( VS_INPUT In )
{
    VS_OUTPUT Out = (VS_OUTPUT) 0; 
    float4 pos = In.position;
    float3 normal = In.normal;
    float4 output_pos, pos_world;
    
    pos_world = SkinPoint(  pos   , blendMatrices, In.indices, In.weights); // pos is changed.
    float3 N = SkinVector( normal, blendMatrices, In.indices, In.weights); // normal is changed.
    
    // transform position to screen space before changing it.
    output_pos = mul( pos_world, view_proj_matrix );
    Out.position = output_pos;

	//apply fog
	float distfog = saturate((fFogDistEnd - output_pos.z)/(fFogDistEnd - fFogDistStart));
	float heightfog = saturate((fFogHeightEnd - pos_world.z)/(fFogHeightEnd - fFogHeightStart));
	Out.fog = min(distfog, heightfog);


    float  nLength = length(Light_position - pos_world);
    float3 L = normalize(Light_position - pos_world);

	float Atten = 1/(1+Light_ambient.a*nLength);

    // eye-base의 half-way 벡터
    float3 light_vector = -Light_direction_forsp;
    float3 eye_vector = Camera_position - pos_world;
    float3 halfway = normalize(normalize(light_vector) + normalize(eye_vector));
    
    float ddot = saturate(dot(N, L));
	float sdot = saturate(dot(N, halfway));

    Out.diffuse   = Light_ambient + max(Light_diffuse * ddot * Atten, Light_specular * pow(sdot, 7));     // diffuse + ambient 
	Out.diffuse.a = fVisibility;

    Out.texCoord  = fUVAnimation.w*In.texCoord + fUVAnimation;

    return Out;
}

//============================================================================= 
//캐릭터 테크닉
technique DefaultTech_2x
{
    pass P0
    {   
        VertexShader = compile vs_2_0 Default_VS();
        PixelShader = NULL;
//        PixelShader  = compile ps_1_4 Default_PS();
    }
}


//============================================================================= 
//Specular 테크닉
technique SpecularTech_2x
{
    pass P0
    {   
		VertexShader = compile vs_2_0 Specular_VS();
        PixelShader = NULL;
    }
}