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Update ray dir

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luboslenco
2019-11-03 21:02:13 +01:00
parent 40b4c00ff5
commit bb592f3147
2 changed files with 9 additions and 18 deletions
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Shaders/raytrace/raytrace_brute.cso
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Shaders/raytrace/src/raytrace_brute.hlsl
+7 -16
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@@ -134,27 +134,18 @@ void closesthit(inout RayPayload payload, in BuiltInTriangleIntersectionAttribut
float3 texpaint2 = mytexture2.Load(uint3(tex_coord * size, 0)).rgb;
float3 color = payload.color.rgb * texpaint0.rgb;
if (texpaint2.b >= 0.99) {
payload.ray_dir = lerp(reflect(WorldRayDirection(), n), cos_weighted_hemisphere_direction(n, payload.color.a, seed, constant_buffer.eye.w, mytexture_sobol, mytexture_scramble, mytexture_rank), texpaint2.g);
}
else {
float fresnel = schlick_weight(dot(n, WorldRayDirection())) * (1.0 - texpaint2.g);
float f = rand(DispatchRaysIndex().x, DispatchRaysIndex().y, payload.color.a, seed, constant_buffer.eye.w, mytexture_sobol, mytexture_scramble, mytexture_rank);
if (f > fresnel) {
float3 wo = -WorldRayDirection();
payload.ray_dir = cos_weighted_hemisphere_direction(n, payload.color.a, seed, constant_buffer.eye.w, mytexture_sobol, mytexture_scramble, mytexture_rank);
float3 tangent = float3(0, 0, 0);
float3 binormal = float3(0, 0, 0);
create_basis(n, tangent, binormal);
float3 wi = payload.ray_dir.x * tangent + payload.ray_dir.y * binormal + payload.ray_dir.z * n;
float dotNL = dot(n, wo);
float dotNV = dot(n, wi);
if (dotNL < 0.0 || dotNV < 0.0) color = float3(0, 0, 0);
if (f > 0.5) {
payload.ray_dir = lerp(reflect(WorldRayDirection(), n), cos_weighted_hemisphere_direction(n, payload.color.a, seed, constant_buffer.eye.w, mytexture_sobol, mytexture_scramble, mytexture_rank), pow(texpaint2.g, 1.5));
}
else {
payload.ray_dir = reflect(WorldRayDirection(), n);
}
payload.ray_dir = cos_weighted_hemisphere_direction(n, payload.color.a, seed, constant_buffer.eye.w, mytexture_sobol, mytexture_scramble, mytexture_rank);
color = color * (1.0 - texpaint2.b);
}
float dotNL = dot(n, wo);
if (dotNL < 0.0) color = float3(0, 0, 0);
payload.ray_origin = hit_world_position() + payload.ray_dir * 0.0001f;
payload.color.xyz = color.xyz;
}