61 lines
2.4 KiB
Text
61 lines
2.4 KiB
Text
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#version 410
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layout(location = 0) in vec3 colorin;
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layout(location = 1) in vec3 normal;
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layout(location = 2) in vec3 pos;
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layout(location = 3) in vec4 lightviewpos[3];
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layout(location = 8) in vec2 UV;
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uniform int numLights;
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uniform sampler2D ShadowMaps[3];
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uniform vec3 lightpos[3];
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uniform vec3 lightColor[3];
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layout(location = 0) out vec4 colorOut;
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layout(location = 1) out float depth;
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const float ambientFactor = 0.25;
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const float diffuseFactor = 0.5;
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const float specFactor = 1.0;
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const float shininess = 16.0;
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const float screenGamma = 2.2;
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const float pitl = 3.14159265359 / 16.0;
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void main()
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{
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vec3 colorLinear = ambientFactor * colorin;
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for(int i = 0; i < numLights; i++){
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vec3 lightDir = -normalize(lightpos[i] - pos.xyz);
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float lambertian = max(dot(normalize(normal),lightDir),0.0);
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float specular = 0;
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vec3 viewDir = normalize(-pos.xyz);
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vec3 halfDir = normalize(lightDir + viewDir);
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float specAngle = max(dot(halfDir, normalize(normal)), 0.0);
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specular = int(lambertian > 0)*pow(specAngle, shininess);
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//int visible = int(!(texture(ShadowMaps,lightpos[i].xy/2 + vec2(0.5,0.5)).z < (lightpos[i].z)));
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float visible = 0;
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for(int j = 0; j < 4; j++){
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vec2 offs = vec2(sin(j*pitl),cos(j*pitl)) / 700;
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visible += float(!(texture(ShadowMaps[i],lightviewpos[i].xy + offs).x <= (lightviewpos[i].z - 0.0005*tan(acos(dot(normal,-normalize(lightpos[i] - pos.xyz))))))) * 1.0/16.0;
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}
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if(visible == 0.25)
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visible = 1.0;
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else
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for(int j = 4; j < 16; j++){
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vec2 offs = vec2(sin(j*pitl),cos(j*pitl)) / 700;
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visible += float(!(texture(ShadowMaps[i],lightviewpos[i].xy + offs).x <= (lightviewpos[i].z - 0.0005*tan(acos(dot(normal,-normalize(lightpos[i] - pos.xyz))))))) * 1.0/16.0;
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}
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colorLinear += (visible * 0.5 + 0.5) *(lambertian * diffuseFactor * colorin * lightColor[i] + specular * specFactor*colorin);
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//colorLinear = vec3(visible * specular);
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}
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vec3 colorGammaCorrected = colorLinear;//pow(colorLinear, vec3(1.0/screenGamma));
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//colorOut = vec4(colorin, 1.0)*max(dot(normal,normalize(vec3(0.0,0.0,10.0)-pos)),0.0);
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colorOut = vec4(colorGammaCorrected,1.0) * float(gl_FragCoord.y <= 768 && gl_FragCoord.x <= 1024 && gl_FragCoord.x >= 0 && gl_FragCoord.y >= 0);
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depth = gl_FragCoord.z;
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}
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