#include "def_effect.fx"


//=============================================================================
//Object
VSOBJ_OUTPUT Object_VS( VSOBJ_INPUT In )
{
    VSOBJ_OUTPUT Out = (VSOBJ_OUTPUT) 0; 
    float4 pos = In.position;
    float3 normal = In.normal;
    float4 color = In.diffuse;
    float4 output_pos, pos_world;
    int b_index = In.indices[0];

    // transform position to screen space before changing it.
    pos_world = mul( pos, blendMatrices[b_index] );
    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);


    float3 N = normalize(mul(normal, (float3x3)blendMatrices[b_index])); // normal (view space)
    float  nLength = length(Light_position - pos_world);
    float3 L = normalize(Light_position - pos_world);

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

    // eye-baseÀÇ half-way º¤ÅÍ
    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) + 0.1);

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

    Out.texCoord1  = fUVAnimation.w*In.texCoord + fUVAnimation;
	float heightturm = (pos_world.z - fTerrainTextureCenter.z);
	float4 litproj = heightturm*float4(L.x, L.y, L.z, L.z);///L.z;
    Out.texCoord2  = fTerrain1stTextureScale * (pos_world - fTerrainTextureCenter - litproj);
	heightturm = (pos_world.z - fTerrainTextureCenterDusk.z);
	litproj = heightturm*float4(L.x, L.y, L.z, L.z);///L.z;
    Out.texCoord3  = fTerrain2ndTextureScale * (pos_world - fTerrainTextureCenterDusk - litproj);

    return Out;
}

VSOBJ_NOLIGHT_OUTPUT ObjectNoLight_VS( VSOBJ_INPUT In )
{
    VSOBJ_NOLIGHT_OUTPUT Out = (VSOBJ_NOLIGHT_OUTPUT) 0; 
    float4 pos = In.position;
    float3 normal = In.normal;
    float4 color = In.diffuse;
    float4 output_pos, pos_world;
    int b_index = In.indices[0];

    // transform position to screen space before changing it.
    pos_world = mul( pos, blendMatrices[b_index] );
    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);


    float3 N = normalize(mul(normal, (float3x3)blendMatrices[b_index])); // normal (view space)
    float  nLength = length(Light_position - pos_world);
    float3 L = normalize(Light_position - pos_world);

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

    // eye-baseÀÇ half-way º¤ÅÍ
    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(normal, halfway));

    Out.diffuse   = Light_ambient + Light_diffuse;// * ddot * Atten + Light_specular * pow(dotval, 7);     // diffuse + ambient 
	Out.diffuse.a = 1;//fVisibility;

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

    return Out;
}


//============================================================================= 
//Object Mesh Å×Å©´Ð
technique ObjectTech_2x
{
    pass P0
    {
		VertexShader = compile vs_1_1 Object_VS();
        PixelShader = NULL;
    }
}

technique ObjectNoLightTech_2x
{
    pass P0
    {
		VertexShader = compile vs_1_1 ObjectNoLight_VS();
        PixelShader = NULL;
    }
}