47 lines
1.4 KiB
HLSL
47 lines
1.4 KiB
HLSL
#ifndef HMODEL_H
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#define HMODEL_H
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#include "common.hlsli"
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uniform samplerCUBE env_s0;
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uniform samplerCUBE env_s1;
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uniform samplerCUBE sky_s0;
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uniform samplerCUBE sky_s1;
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void hmodel(out float3 hdiffuse, out float3 hspecular,
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float m, float h, float s, float3 Pnt, float3 normal)
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{
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// hscale - something like diffuse reflection
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float3 nw = mul(m_invV, normal);
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float hscale = h;
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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 v2PntL = normalize(Pnt);
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float3 v2Pnt = mul(m_invV, v2PntL);
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float3 vreflect = reflect(v2Pnt, nw);
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float hspec = .5h + .5h * dot(vreflect, v2Pnt);
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// material
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float4 light = tex3D(s_material, float3(hscale, hspec, m)).xxxy;
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// diffuse color
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float3 e0d = texCUBElod(env_s0, float4(nw, 0.0f));
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float3 e1d = texCUBElod(env_s1, float4(nw, 0.0f));
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float3 env_d = L_hemi_color.xyz * lerp(e0d, e1d, L_hemi_color.w);
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env_d *= env_d; // contrast
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hdiffuse = env_d * light.xyz + L_ambient.rgb;
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// specular color
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vreflect.y = vreflect.y * 2 - 1;
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float3 e0s = texCUBElod(env_s0, float4(vreflect, 0.0f));
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float3 e1s = texCUBElod(env_s1, float4(vreflect, 0.0f));
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float3 env_s = L_hemi_color.xyz * lerp(e0s, e1s, L_hemi_color.w);
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env_s *= env_s;
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hspecular = env_s * light.w * s;
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}
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#endif
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