78 lines
2.1 KiB
GLSL
78 lines
2.1 KiB
GLSL
#ifndef _LIGHT_MOBILE_GLSL_
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#define _LIGHT_MOBILE_GLSL_
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#include "compiled.inc"
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#include "std/brdf.glsl"
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#ifdef _ShadowMap
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#include "std/shadows.glsl"
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#endif
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#ifdef _ShadowMap
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uniform vec2 lightProj;
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// uniform samplerCubeShadow shadowMap0; //arm_dev
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uniform samplerCube shadowMap0;
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uniform samplerCube shadowMap1;
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uniform samplerCube shadowMap2;
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uniform samplerCube shadowMap3;
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#ifdef _Spot
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uniform sampler2D shadowMapSpot0;
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uniform sampler2D shadowMapSpot1;
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uniform sampler2D shadowMapSpot2;
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uniform sampler2D shadowMapSpot3;
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uniform mat4 LWVPSpot0;
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uniform mat4 LWVPSpot1;
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uniform mat4 LWVPSpot2;
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uniform mat4 LWVPSpot3;
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#endif
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#endif
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vec3 sampleLight(const vec3 p, const vec3 n, const vec3 v, const float dotNV, const vec3 lp, const vec3 lightCol,
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const vec3 albedo, const float rough, const float spec, const vec3 f0
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#ifdef _ShadowMap
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, int index, float bias
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#endif
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#ifdef _Spot
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, bool isSpot, float spotA, float spotB, vec3 spotDir
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#endif
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) {
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vec3 ld = lp - p;
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vec3 l = normalize(ld);
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vec3 h = normalize(v + l);
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float dotNH = dot(n, h);
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float dotVH = dot(v, h);
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float dotNL = dot(n, l);
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vec3 direct = albedo * max(dotNL, 0.0) +
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specularBRDF(f0, rough, dotNL, dotNH, dotNV, dotVH) * spec;
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direct *= lightCol;
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direct *= attenuate(distance(p, lp));
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#ifdef _Spot
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if (isSpot) {
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float spotEffect = dot(spotDir, l); // lightDir
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// x - cutoff, y - cutoff - exponent
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if (spotEffect < spotA) {
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direct *= smoothstep(spotB, spotA, spotEffect);
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}
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#ifdef _ShadowMap
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vec4 lPos = LWVPSpot0 * vec4(p + n * bias * 10, 1.0);
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if (lPos.w > 0.0) {
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direct *= shadowTest(shadowMapSpot0, lPos.xyz / lPos.w, bias, shadowmapSize);
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}
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#endif
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return direct;
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}
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#endif
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#ifdef _ShadowMap
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if (index == 0) direct *= PCFCube(shadowMap0, ld, -l, bias, lightProj, n);
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else if (index == 1) direct *= PCFCube(shadowMap1, ld, -l, bias, lightProj, n);
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else if (index == 2) direct *= PCFCube(shadowMap2, ld, -l, bias, lightProj, n);
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else if (index == 3) direct *= PCFCube(shadowMap3, ld, -l, bias, lightProj, n);
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#endif
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return direct;
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}
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#endif
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