jdupuy

// Helper function: sample the visible hemisphere from a spherical cap
vec3 SampleVndf_Hemisphere(vec2 u, vec3 wi)
{
	// sample a spherical cap in (-wi.z, 1]
	float phi = 2.0f * M_PI * u.x;
	float z = fma((1.0f - u.y), (1.0f + wi.z), -wi.z);
	float sinTheta = sqrt(clamp(1.0f - z * z, 0.0f, 1.0f));
	float x = sinTheta * cos(phi);
	float y = sinTheta * sin(phi);
	vec3 c = vec3(x, y, z);

pervognsen

struct Object {
    Key key; // The key is any piece of data that uniquely identifies the object.
    // ...
};

struct Handle {
    Key key;
    Index index; // This caches a speculative table index for an object with the corresponding key.
};

dondragmer

#pragma use_dxc //enable SM 6.0 features, in Unity this is only supported on version 2020.2.0a8 or later with D3D12 enabled
#pragma kernel CountTotalsInBlock
#pragma kernel BlockCountPostfixSum
#pragma kernel CalculateOffsetsForEachKey
#pragma kernel FinalSort

uint _FirstBitToSort;
int _NumElements;
int _NumBlocks;
bool _ShouldSortPayload;

pixnblox

// Projects the specified position (point) onto the plane with the specified origin and normal.
float3 projectOnPlane(float3 position, float3 origin, float3 normal)
{
    return position - dot(position - origin, normal) * normal;
}

// Computes the shading position of the specified geometric position and vertex positions and
// normals. For a triangle with normals describing a convex surface, this point will be slightly
// above the surface. For a concave surface, the geometry position is used directly.
// NOTE: The difference between the shading position and geometry position is significant when

pixelmager

Use cases

• Bluenoise in the game INSIDE (dithering, raymarching, reflections)
• Dithering, Ray marching, shadows etc
• A Survery of Blue Noise and Its Applications

Textures/Matrices for direct use (data!)

• Moments In Graphics (void-and-cluster)
  • 2D
  • 3D and 4D
• Bart Wronski Implementation of Solid Angle algorithm

NocturnDragon

#include <stdio.h>

// #define CLANG_EXTENSION
// Clang compile with -O3

#define VS_EXTENSION
// https://godbolt.org/z/sVWrF4
// Clang  compile with -O3 -fms-compatibility
// VS2017 compile with /O3