65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
#ifndef HMODEL_H
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#define HMODEL_H
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#include "common.h"
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uniform samplerCUBE env_s0 ;
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uniform samplerCUBE env_s1 ;
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uniform float4 env_color ; // color.w = lerp factor
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uniform float3x4 m_v2w ;
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void hmodel (out float3 hdiffuse, out float3 hspecular, float m, float h, float s, float3 point, float3 normal)
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{
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// hscale - something like diffuse reflection
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float3 nw = mul (m_v2w,normal);
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float hscale = h; //. * (.5h + .5h*nw.y);
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#ifdef USE_GAMMA_22
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hscale = (hscale*hscale); // make it more linear
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#endif
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// reflection vector
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float3 v2point = mul (m_v2w,normalize(point));
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float3 vreflect= reflect (v2point,nw);
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float hspec = .5h+.5h*dot (vreflect,v2point);
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// material
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float4 light = tex3D (s_material, float3(hscale, hspec, m) ); // sample material
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// diffuse color
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float3 e0d = texCUBE (env_s0,nw);
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float3 e1d = texCUBE (env_s1,nw);
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float3 env_d = env_color.xyz*lerp(e0d,e1d,env_color.w);
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hdiffuse = env_d *light.xyz + L_ambient.rgb ;
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// specular color
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float3 e0s = texCUBE (env_s0,vreflect);
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float3 e1s = texCUBE (env_s1,vreflect);
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float3 env_s = env_color.xyz*lerp(e0s,e1s,env_color.w);
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hspecular = env_s *light.w * s ;
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}
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void hmodel_table (out float3 hdiffuse, out float3 hspecular, float m, float h, float s, float3 point, float3 normal)
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{
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// hscale - something like diffuse reflection
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float hscale = h;
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// reflection vector
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float3 v2point = normalize (point);
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float3 vreflect= reflect (v2point,normal);
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float hspec = .5h+.5h*dot (vreflect,v2point);
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// material
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float4 light = tex3D (s_material, float3(hscale, hspec, m) ); // sample material
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// diffuse color
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float3 env_d = texCUBE (env_s0,normal);
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// specular color
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float3 env_s = texCUBE (env_s0,vreflect);
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//
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hdiffuse = env_d *light.xyz + L_ambient.rgb ;
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hspecular = env_s *light.w * s ;
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}
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#endif
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