init

gamedata/shaders/r2/hmodel.hlsli

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+#ifndef HMODEL_H
+#define HMODEL_H
+
+#include "common.hlsli"
+
+uniform samplerCUBE env_s0;
+uniform samplerCUBE env_s1;
+uniform samplerCUBE sky_s0;
+uniform samplerCUBE sky_s1;
+
+void hmodel(out float3 hdiffuse, out float3 hspecular,
+    float m, float h, float s, float3 Pnt, float3 normal)
+{
+    // hscale - something like diffuse reflection
+    float3 nw = mul(m_invV, normal);
+    float hscale = h;
+
+#ifdef USE_GAMMA_22
+    hscale = (hscale * hscale); // make it more linear
+#endif
+
+    // reflection vector
+    float3 v2PntL = normalize(Pnt);
+    float3 v2Pnt = mul(m_invV, v2PntL);
+    float3 vreflect = reflect(v2Pnt, nw);
+    float hspec = .5h + .5h * dot(vreflect, v2Pnt);
+
+    // material
+    float4 light = tex3D(s_material, float3(hscale, hspec, m)).xxxy;
+
+    // diffuse color
+    float3 e0d = texCUBElod(env_s0, float4(nw, 0.0f));
+    float3 e1d = texCUBElod(env_s1, float4(nw, 0.0f));
+    float3 env_d = L_hemi_color.xyz * lerp(e0d, e1d, L_hemi_color.w);
+    env_d *= env_d; // contrast
+    hdiffuse = env_d * light.xyz + L_ambient.rgb;
+
+    // specular color
+    vreflect.y = vreflect.y * 2 - 1;
+
+    float3 e0s = texCUBElod(env_s0, float4(vreflect, 0.0f));
+    float3 e1s = texCUBElod(env_s1, float4(vreflect, 0.0f));
+    float3 env_s = L_hemi_color.xyz * lerp(e0s, e1s, L_hemi_color.w);
+    env_s *= env_s;
+    hspecular = env_s * light.w * s;
+}
+#endif