"\n"
"#ifdef USEOFFSETMAPPING\n"
"uniform mediump vec4 OffsetMapping_ScaleSteps;\n"
+"uniform mediump float OffsetMapping_Bias;\n"
+"#ifdef USEOFFSETMAPPING_LOD\n"
+"uniform mediump float OffsetMapping_LodDistance;\n"
+"#endif\n"
"vec2 OffsetMapping(vec2 TexCoord, vec2 dPdx, vec2 dPdy)\n"
"{\n"
" float i;\n"
+" // distance-based LOD\n"
+"#ifdef USEOFFSETMAPPING_LOD\n"
+" mediump float LODFactor = min(1.0, OffsetMapping_LodDistance / EyeVectorFogDepth.z);\n"
+" mediump vec4 ScaleSteps = vec4(OffsetMapping_ScaleSteps.x, OffsetMapping_ScaleSteps.y * LODFactor, OffsetMapping_ScaleSteps.z / LODFactor, OffsetMapping_ScaleSteps.w * LODFactor);\n"
+"#else\n"
+" #define ScaleSteps OffsetMapping_ScaleSteps\n"
+"#endif\n"
"#ifdef USEOFFSETMAPPING_RELIEFMAPPING\n"
" float f;\n"
" // 14 sample relief mapping: linear search and then binary search\n"
" // this basically steps forward a small amount repeatedly until it finds\n"
" // itself inside solid, then jitters forward and back using decreasing\n"
" // amounts to find the impact\n"
-" //vec3 OffsetVector = vec3(EyeVectorFogDepth.xy * ((1.0 / EyeVectorFogDepth.z) * OffsetMapping_ScaleSteps.x) * vec2(-1, 1), -1);\n"
-" //vec3 OffsetVector = vec3(normalize(EyeVectorFogDepth.xy) * OffsetMapping_ScaleSteps.x * vec2(-1, 1), -1);\n"
-" vec3 OffsetVector = vec3(normalize(EyeVectorFogDepth.xyz).xy * OffsetMapping_ScaleSteps.x * vec2(-1, 1), -1);\n"
-" vec3 RT = vec3(TexCoord, 1);\n"
-" OffsetVector *= OffsetMapping_ScaleSteps.z;\n"
-" for(i = 1.0; i < OffsetMapping_ScaleSteps.y; ++i)\n"
+" //vec3 OffsetVector = vec3(EyeVectorFogDepth.xy * ((1.0 / EyeVectorFogDepth.z) * ScaleSteps.x) * vec2(-1, 1), -1);\n"
+" //vec3 OffsetVector = vec3(normalize(EyeVectorFogDepth.xy) * ScaleSteps.x * vec2(-1, 1), -1);\n"
+" vec3 OffsetVector = vec3(normalize(EyeVectorFogDepth.xyz).xy * ScaleSteps.x * vec2(-1, 1), -1);\n"
+" vec3 RT = vec3(vec2(TexCoord.xy - OffsetVector.xy*OffsetMapping_Bias), 1);\n"
+" OffsetVector *= ScaleSteps.z;\n"
+" for(i = 1.0; i < ScaleSteps.y; ++i)\n"
" RT += OffsetVector * step(dp_textureGrad(Texture_Normal, RT.xy, dPdx, dPdy).a, RT.z);\n"
-" for(i = 0.0, f = 1.0; i < OffsetMapping_ScaleSteps.w; ++i, f *= 0.5)\n"
+" for(i = 0.0, f = 1.0; i < ScaleSteps.w; ++i, f *= 0.5)\n"
" RT += OffsetVector * (step(dp_textureGrad(Texture_Normal, RT.xy, dPdx, dPdy).a, RT.z) * f - 0.5 * f);\n"
" return RT.xy;\n"
"#else\n"
" // 2 sample offset mapping (only 2 samples because of ATI Radeon 9500-9800/X300 limits)\n"
-" //vec2 OffsetVector = vec2(EyeVectorFogDepth.xy * ((1.0 / EyeVectorFogDepth.z) * OffsetMapping_ScaleSteps.x) * vec2(-1, 1));\n"
-" //vec2 OffsetVector = vec2(normalize(EyeVectorFogDepth.xy) * OffsetMapping_ScaleSteps.x * vec2(-1, 1));\n"
-" vec2 OffsetVector = vec2(normalize(EyeVectorFogDepth.xyz).xy * OffsetMapping_ScaleSteps.x * vec2(-1, 1));\n"
-" OffsetVector *= OffsetMapping_ScaleSteps.z;\n"
-" for(i = 0.0; i < OffsetMapping_ScaleSteps.y; ++i)\n"
-" TexCoord += OffsetVector * (1.0 - dp_textureGrad(Texture_Normal, TexCoord, dPdx, dPdy).a);\n"
+" //vec2 OffsetVector = vec2(EyeVectorFogDepth.xy * ((1.0 / EyeVectorFogDepth.z) * ScaleSteps.x) * vec2(-1, 1));\n"
+" //vec2 OffsetVector = vec2(normalize(EyeVectorFogDepth.xy) * ScaleSteps.x * vec2(-1, 1));\n"
+" vec2 OffsetVector = vec2(normalize(EyeVectorFogDepth.xyz).xy * ScaleSteps.x * vec2(-1, 1));\n"
+" OffsetVector *= ScaleSteps.z;\n"
+" for(i = 0.0; i < ScaleSteps.y; ++i)\n"
+" TexCoord += OffsetVector * ((1.0 - OffsetMapping_Bias) - dp_textureGrad(Texture_Normal, TexCoord, dPdx, dPdy).a);\n"
" return TexCoord;\n"
"#endif\n"
"}\n"
" // calculate directional shading\n"
" vec3 eyevector = position * -1.0;\n"
"# ifdef USEEXACTSPECULARMATH\n"
-" myhalf specular = pow(cast_myhalf(max(float(dot(reflect(lightnormal, surfacenormal), normalize(eyevector)))*-1.0, 0.0)), SpecularPower * normalmap.a);\n"
+" myhalf specular = pow(cast_myhalf(max(float(dot(reflect(lightnormal, surfacenormal), normalize(eyevector)))*-1.0, 0.0)), 1.0 + SpecularPower * normalmap.a);\n"
"# else\n"
" myhalf3 specularnormal = normalize(lightnormal + cast_myhalf3(normalize(eyevector)));\n"
-" myhalf specular = pow(cast_myhalf(max(float(dot(surfacenormal, specularnormal)), 0.0)), SpecularPower * normalmap.a);\n"
+" myhalf specular = pow(cast_myhalf(max(float(dot(surfacenormal, specularnormal)), 0.0)), 1.0 + SpecularPower * normalmap.a);\n"
"# endif\n"
"#endif\n"
"\n"
" color.rgb = diffusetex * (Color_Ambient + diffuse * Color_Diffuse);\n"
"#ifdef USESPECULAR\n"
"#ifdef USEEXACTSPECULARMATH\n"
-" myhalf specular = pow(cast_myhalf(max(float(dot(reflect(lightnormal, surfacenormal), normalize(EyeVectorFogDepth.xyz)))*-1.0, 0.0)), SpecularPower * glosstex.a);\n"
+" myhalf specular = pow(cast_myhalf(max(float(dot(reflect(lightnormal, surfacenormal), normalize(EyeVectorFogDepth.xyz)))*-1.0, 0.0)), 1.0 + SpecularPower * glosstex.a);\n"
"#else\n"
" myhalf3 specularnormal = normalize(lightnormal + cast_myhalf3(normalize(EyeVectorFogDepth.xyz)));\n"
-" myhalf specular = pow(cast_myhalf(max(float(dot(surfacenormal, specularnormal)), 0.0)), SpecularPower * glosstex.a);\n"
+" myhalf specular = pow(cast_myhalf(max(float(dot(surfacenormal, specularnormal)), 0.0)), 1.0 + SpecularPower * glosstex.a);\n"
"#endif\n"
" color.rgb += glosstex.rgb * (specular * Color_Specular);\n"
"#endif\n"
" myhalf diffuse = cast_myhalf(max(float(dot(surfacenormal, lightnormal)), 0.0));\n"
"# ifdef USESPECULAR\n"
"# ifdef USEEXACTSPECULARMATH\n"
-" myhalf specular = pow(cast_myhalf(max(float(dot(reflect(lightnormal, surfacenormal), normalize(EyeVectorFogDepth.xyz)))*-1.0, 0.0)), SpecularPower * glosstex.a);\n"
+" myhalf specular = pow(cast_myhalf(max(float(dot(reflect(lightnormal, surfacenormal), normalize(EyeVectorFogDepth.xyz)))*-1.0, 0.0)), 1.0 + SpecularPower * glosstex.a);\n"
"# else\n"
" myhalf3 specularnormal = normalize(lightnormal + cast_myhalf3(normalize(EyeVectorFogDepth.xyz)));\n"
-" myhalf specular = pow(cast_myhalf(max(float(dot(surfacenormal, specularnormal)), 0.0)), SpecularPower * glosstex.a);\n"
+" myhalf specular = pow(cast_myhalf(max(float(dot(surfacenormal, specularnormal)), 0.0)), 1.0 + SpecularPower * glosstex.a);\n"
"# endif\n"
" color.rgb = diffusetex * Color_Ambient + (diffusetex * Color_Diffuse * diffuse + glosstex.rgb * Color_Specular * specular) * lightcolor;\n"
"# else\n"