//Cg

//

//Cg profile arbvp1 arbfp1

void vshader(float4 vtx_position : POSITION,

out float4 l_position : POSITION,

out float4 l_pos : TEXCOORD0,

uniform float4x4 mat_modelproj,

uniform float4x4 trans_model_to_clip)

{

l_position=mul(mat_modelproj, vtx_position);

l_pos=mul(trans_model_to_clip, vtx_position);

l_pos.z = l_pos.w;

}

void fshader(float4 l_pos: TEXCOORD0,

uniform sampler2D k_texnormal : TEXUNIT0,

uniform sampler2D k_texalbedo : TEXUNIT1,

uniform sampler2D k_texdepth : TEXUNIT2,

uniform float4 texpad_texnormal,

uniform float4 k_proj,

uniform float4 vspos_model,

uniform float4 k_lightcolor,

uniform float4 row0_model_to_view,

out float4 o_color: COLOR)

{

float3 screen = l_pos.xyz / l_pos.w;

float2 texcoords = float2(screen.xy) * texpad_texnormal.xy + texpad_texnormal.xy;

float4 albedo = tex2D(k_texalbedo, texcoords);

float4 normal = tex2D(k_texnormal, texcoords);

float depth = tex2D(k_texdepth, texcoords);

float3 view = (screen.xzy * k_proj.xyz) / (depth + k_proj.w);

float3 lightvec = float3(vspos_model) - view;

float lightdist = length(lightvec);

float3 lightdir = lightvec / lightdist;

float scaledist = (lightdist / row0_model_to_view.x);

float falloff = saturate(1.0 - scaledist);

float brite = falloff * falloff * dot(lightdir, float3(normal));

o_color = albedo * k_lightcolor * brite;

o_color.a = 1;

}