54 lines
1.5 KiB
GLSL
54 lines
1.5 KiB
GLSL
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#version 330
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#define M_PI 3.1415926535897932384626433832795
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in vec2 ftextex;
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in vec3 vnorm;
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in vec3 vpos;
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out vec4 cout;
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uniform sampler2D texcol;
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uniform bool enableFlashlight;
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uniform mat4 modelToCam;
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uniform vec3 lightPos;
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uniform vec4 lightIntensity;
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uniform vec4 ambIntensity;
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uniform vec3 lookPos;
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uniform vec3 lookVector;
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uniform vec3 flashLightPos;
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uniform vec3 flashLightDir;
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uniform vec4 flashLightIntensity;
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vec4 getLightIntensity(in float dist) {
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return lightIntensity * (1/(1 + .1 * dist));
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}
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float deg2Rad(float deg) {
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return (deg*M_PI)/180;
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}
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void main(void) {
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vec3 vcpos = vec3(modelToCam * vec4(vpos, 1.0));
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vec3 fragToLight = lightPos - vcpos;
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float uccostheta = dot(vnorm, normalize(fragToLight));
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float costheta = clamp(uccostheta, 0, 1);
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vec3 fragToFlashlight = vcpos - flashLightPos;
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float component = 1-clamp(abs(acos(dot(normalize(fragToFlashlight),normalize(flashLightDir))))/(deg2Rad(10)),0,1);
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component = pow(component, 4.0/3.0);
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int check = (dot(vnorm,-normalize(fragToFlashlight))>=0)?1:0;
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float distFactor = 1/(1+.001*dot(fragToFlashlight,fragToFlashlight));
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vec4 tcol = texture(texcol, ftextex);
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vec4 coutt = tcol*getLightIntensity(dot(fragToLight,fragToLight))*costheta
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+ ((enableFlashlight) ? tcol*flashLightIntensity*component*check*distFactor : vec4(0.0))
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+ tcol*ambIntensity;
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//cout = vec4(coutt.rgb, tcol.a);
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cout = vec4(coutt.r, coutt.g, coutt.b, tcol.a);
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//cout = vec4(ftextex.x/8,ftextex.x/8,ftextex.x/8,1.0);
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}
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