46 lines
1.6 KiB
GLSL
46 lines
1.6 KiB
GLSL
// basic texture + masked equirectangular envmap + gradient rim
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// + dynamic glows (Plasma Blaster specific)
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#define RECIPROCAL_PI2 0.15915494
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#ifndef RIMSTEP
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#define RIMSTEP .5
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#endif
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#ifndef ENVFACT
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#define ENVFACT 1.
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#endif
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#ifndef RIMFACT
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#define RIMFACT 1.
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#endif
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void SetupMaterial( inout Material mat )
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{
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vec4 base = getTexel(vTexCoord.st);
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float mask = texture(masktex,vTexCoord.st).x;
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vec3 norm = normalize(vWorldNormal.xyz);
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vec3 eye = normalize(uCameraPos.xyz-pixelpos.xyz);
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vec3 rvec = normalize(reflect(eye,norm));
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vec2 uv = vec2(atan(rvec.z,rvec.x)*RECIPROCAL_PI2+.5,asin(rvec.y)*RECIPROCAL_PI2+.5);
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vec2 uv2 = vec2(atan(rvec.z,abs(rvec.x))*RECIPROCAL_PI2+.5,asin(rvec.y)*RECIPROCAL_PI2+.5);
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vec3 envcol = textureGrad(envtex,uv,dFdx(uv2),dFdy(uv2)).rgb*ENVFACT;
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#ifdef RIM_LIGHTING
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float rim = smoothstep(RIMSTEP,1.,1.-abs(dot(eye,norm)));
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vec3 rimcol = texture(rimtex,vec2(.25+.5*rim,.5)).rgb;
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envcol = mix(envcol,rimcol,rim*RIMFACT);
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#endif
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mat.Base = vec4(base.rgb+envcol*mask,base.a);
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mat.Normal = ApplyNormalMap(vTexCoord.st);
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if ( (uTextureMode&TEXF_Brightmap) != 0 )
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mat.Bright = texture(brighttexture,vTexCoord.st);
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// status canvas tex (only need two channels)
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vec2 fade = texture(fadetex,vec2(.5)).rg;
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// red: battery connection led
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vec3 bat = texture(battex,vTexCoord.st).rgb*fade.r;
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mat.Base.rgb += bat;
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mat.Bright.rgb += vec3(max(bat.r,max(bat.g,bat.b)));
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// green: charge glow
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float chg = texture(chgtex,vTexCoord.st).x*fade.g;
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// TODO noise
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vec3 grad = texture(gradtex,vec2(.25+chg*.5,.5)).rgb;
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mat.Base.rgb += grad;
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mat.Bright.rgb += vec3(chg);
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}
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