29 lines
1.1 KiB
GLSL
29 lines
1.1 KiB
GLSL
#ifndef TRACE_ADDITIVE_GLSL_INCLUDED
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#define TRACE_ADDITIVE_GLSL_INCLUDED
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vec3 traceAdditive(vec3 pos, vec3 dir, float L) {
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const float additive_soft_overshoot = 16.;
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vec3 ret = vec3(0., 0., 0.);
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rayQueryEXT rq;
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const uint flags = 0
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| gl_RayFlagsCullFrontFacingTrianglesEXT
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//| gl_RayFlagsSkipClosestHitShaderEXT
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| gl_RayFlagsNoOpaqueEXT // force all to be non-opaque
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;
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rayQueryInitializeEXT(rq, tlas, flags, GEOMETRY_BIT_ADDITIVE, pos, 0., dir, L + additive_soft_overshoot);
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while (rayQueryProceedEXT(rq)) {
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const MiniGeometry geom = readCandidateMiniGeometry(rq);
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const Kusok kusok = getKusok(geom.kusok_index);
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const vec4 texture_color = texture(textures[nonuniformEXT(kusok.tex_base_color)], geom.uv);
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const vec3 color = texture_color.rgb * kusok.emissive * texture_color.a * kusok.color.a * SRGBtoLINEAR(geom.color.rgb * geom.color.a);
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const float hit_t = rayQueryGetIntersectionTEXT(rq, false);
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const float overshoot = hit_t - L;
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ret += color * smoothstep(additive_soft_overshoot, 0., overshoot);
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}
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return ret;
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}
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#endif //ifndef TRACE_ADDITIVE_GLSL_INCLUDED
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